Journal articles: 'Extracranial carotid arterie'

1

Puglioli, M., R. Padolecchia, P. L. Collavoli, G. Parenti, G. Orlandi, and C. Paoli. "Angioplastica carotidea." Rivista di Neuroradiologia 11, no. 4 (August 1998): 431–42. http://dx.doi.org/10.1177/197140099801100402.

Full text

Abstract:

L'endoarteriectomia, come confermano i risultati degli studi multicentrici NASCET (North American Symptomatic Carotid Endarterectomy Trial), ECST (European Carotid Surgery Trial) ed ACAS (Asymptomatic Carotid Atherosclerosis Study), rappresenta il trattamento di elezione delle stenosi aterosclerotiche interessanti il distretto extracranico dell'arteria carotide, sia nei pazienti sintomatici (stenosi > 70%) che asintomatici (stenosi > 60%). L'intervento chirurgico è gravato da un rischio cumulativo di morbilità-mortalità (stroke/morte) che il NASCET, l'ECST e l'ACAS segnalano, rispettivamente, nel 5,8%, 7,5% e 2,3%, insieme ad altre possibili complicanze: infarto miocardico (0,9%), paralisi di nervi cranici (7,6%), ematoma del collo (5,5%), infezioni (3,4%). Qualora, per ragioni cliniche od anatomiche, il rischio chirurgico sia troppo elevato, come nei pazienti cardiopatici, diabetici, con insufficienza polmonare o renale, con restenosi, con stenosi post-attiniche o fibrodisplastiche, con stenosi carotidee prossimali o distali, con lesioni «tandem», l'angioplastica transluminale percutanea (PTA) e/o lo Stenting carotideo possono rappresentare una valida alternativa terapeutica all'endoarteriectomia. In questo articolo presentiamo la nostra casistica relativa a 41 procedure (36 PTA; 5 Stenting), eseguite su 33 pazienti negli ultimi due anni. I trattamenti sono stati rivolti a 28 arterie carotidi interne, 4 arterie carotidi esterne, 2 arterie carotidi comuni, 2 tronchi anonimi; gli stents sono stati rilasciati in 4 arterie carotidi interne e in 1 arteria carotide comune. Le procedure regolarmente portate a termine sono state 37 (32 PTA; 5 Stents), con un ottimo risultato anatomico in 36 casi. Nei controlli a 6 mesi abbiamo riscontrato una ristenosi (< 60%), asintomatica. In questo articolo illustriamo il nostro protocollo, gli insuccessi tecnici, i risultati e le complicanze.

APA, Harvard, Vancouver, ISO, and other styles

2

Jackson, Adam E. "Occlusion of the Extracranial Carotid Arteries." Journal for Vascular Ultrasound 41, no. 3 (September 2017): 118–22. http://dx.doi.org/10.1177/154431671704100302.

Full text

Abstract:

Carotid duplex ultrasound (CDU) is a commonly performed vascular exam for the detection of carotid disease. In most cases, the exam is performed to detect hemodynamically significant changes that could cause a cerebrovascular accident. Ultrasound is accurate in the detection of >70% stenosis. CDU exams are often used to detect a potentially harmful atherosclerotic process before it embolizes. In some cases, the atherosclerotic formation will be so great that it will occlude the extracranial vessels. The true incidence of carotid occlusion is not well known as it may be asymptomatic. CDU can show where the occlusion is located and if the bifurcation is patent which can reveal treatment options for the patient. Carotid occlusions can be medically managed or may require surgery to restore flow to the cerebrovasculature.

APA, Harvard, Vancouver, ISO, and other styles

3

Elwertowski, Michał, and Grzegorz Małek. "Standardy badań ultrasonograficznych Polskiego Towarzystwa Ultrasonograficznego – aktualizacja. Badanie zewnątrzczaszkowych odcinków tętnic szyjnych oraz kręgowych." Journal of Ultrasonography 14, no. 57 (June 30, 2014): 179–91. http://dx.doi.org/10.15557/jou.2014.0018.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Ziemak, H., H. Frackowiak, and M. Zdun. "Domestic cat’s internal carotid artery in ontogenesis." Veterinární Medicína 66, No. 7 (June 1, 2021): 292–97. http://dx.doi.org/10.17221/116/2020-vetmed.

Full text

Abstract:

The aim of the study was to trace the presence of the internal carotid artery in the system of cerebral arteries of the domestic cat and to determine the role of this artery in supplying blood to the brain in ontogenesis. The available publications provide ambiguous or even contradictory information. The authors of some studies claim that there is no extracranial segment in the domestic cat’s internal carotid artery. Other authors reported the internal carotid artery in the arterial pattern of the encephalon base. The study was conducted on sixty-one domestic cats: fifteen foetuses, sixteen juvenile cats, and thirty adult cats were analysed. The internal carotid artery – a vessel with a relatively large lumen – was fully preserved in all the foetuses and most of the juvenile animals. This artery was not complete with regard to the adults and some juvenile individuals, because it had lost the extracranial segment as a result of the obliteration process. A precise description of this area is not only of biological, but also of clinical, significance. The knowledge of the anatomical structure of cerebral vessels is particularly important to correctly interpret images obtained during diagnostic tests and to conduct surgical procedures correctly.

APA, Harvard, Vancouver, ISO, and other styles

5

Grotta, James. "Elective Stenting of Extracranial Carotid Arteries." Circulation 95, no. 2 (January 21, 1997): 303–5. http://dx.doi.org/10.1161/01.cir.95.2.303.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Pourhassan, Siamak, Dirk Grotemeyer, Marcus Fokou, Wolfram Heinen, Kai Balzer, Ulrich Ramp, and Wilhelm Sandmann. "Extracranial carotid arteries aneurysms in children." Journal of Pediatric Surgery 42, no. 11 (November 2007): 1961–68. http://dx.doi.org/10.1016/j.jpedsurg.2007.07.052.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Tóthová, Žofia, Katarína Sláviková, Monika Siváková, Ivan Vulev, and Miroslav Tedla. "Isolated lesion of the hypoglossal nerve as the result of an internal carotid artery aneurysm – case report." Otorinolaryngologie a foniatrie 71, no. 1 (March 22, 2022): 44–47. http://dx.doi.org/10.48095/ccorl202244.

Full text

Abstract:

A 56-year-old male with arterial hypertension sought for medical help for a sudden unilateral swelling of the oral tongue and changed quality of speech. An ENT examination revealed a lesion of the left hypoglossal nerve. Neurological examinations including brain imaging showed negative results. The MRI of the neck only suggested, the angiography confirmed internal carotid aneurysm in the extracranial portion causing pressure on the hypoglossal nerve. The aneurysm was treated with a flow diverter, which reroutes the blood flow and thus embolises the aneurysm. The aneurysm shrunk, its mass effect disappeared and the function of the nerve fully recovered. Keywords: case report – hypoglossal nerve – a. carotis interna – sudden appeared lesion

APA, Harvard, Vancouver, ISO, and other styles

8

Khalilov, I. G., N. R. Zakirzhanov, I. F. Sharafislamov, N. I. Bayazova, and G. E. Yaroshkevich. "The structure of atherosclerotic plaques of the arteries estimated at ultrasonography in patients with acute ischemic stroke." Kazan medical journal 97, no. 6 (December 15, 2016): 846–50. http://dx.doi.org/10.17750/kmj2016-846.

Full text

Abstract:

Aim. Evaluation of histological structure of an atherosclerotic plaque of the carotids received during carotid endarterectomy and its comparison to the data obtained at ultrasonography of carotids.Methods. 36 patients with the history of cerebral circulatory disorders aged from 50 to 75 years (24 males and 12 females) were examined. 22 patients (14 males and 8 females) had ischemic focus at CAT scan, 7 patients had recurrent ischemic stroke and the rest had transient ischemic attacks. We performed color duplex scanning of extracranial vessels. In addition to ultrasonography contrast intensifying was performed. Sulfur hexafluoride stabilized by phospholipid shell was used as a contrast. Transcranial Doppler with functional assays was carried out as well. Pathomorphological study of the plaques removed at carotid endarterectomy was conducted.Results. According to the results of ultrasonography conducted before the surgery and histological results, 28 plaques received during carotid endarterectomy were unstable. 60 to 90% stenoses of carotid bifurcation and internal carotids were revealed. Heterogeneous structure, disturbance of fibrous cap and ulcerations, presence of hypoechoic zones of various sizes were observed.Conclusions. The results of ultrasonography are in accordance with histological conclusion; this method is a reliable tool that provides new opportunities for prediction of embolic complications risk and proves the necessity for carotid endarterectomy.

APA, Harvard, Vancouver, ISO, and other styles

9

Shi, Honglu, Sai Shao, Guangbin Wang, Xihai Zhao, Rui Li, Bin Yao, Qinjian Sun, Hiroko Watase, Daniel S. Hippe, and Chun Yuan. "Bilaterally Asymmetric Associations Between Extracranial Carotid Artery Atherosclerosis and Ipsilateral Middle Cerebral Artery Stenosis in Symptomatic Patients." Arteriosclerosis, Thrombosis, and Vascular Biology 40, no. 12 (December 2020): 2965–74. http://dx.doi.org/10.1161/atvbaha.120.315288.

Full text

Abstract:

Objective: To determine the bilaterally asymmetrical associations between extracranial carotid artery atherosclerosis and ipsilateral middle cerebral artery (MCA) stenosis in symptomatic patients using magnetic resonance vessel wall imaging. Approach and Results: Patients with symptomatic carotid artery atherosclerosis were recruited from the Chinese Atherosclerosis Risk Evaluation, a multicenter study. All subjects underwent intracranial magnetic resonance angiography and extracranial carotid artery magnetic resonance imaging. Severe stenosis (stenosis ≥50%) of MCA, carotid moderate-to-severe stenosis (stenosis ≥50%), plaque compositions, and high-risk plaque on symptomatic side were evaluated in all subjects. Associations between ipsilateral MCA stenosis and extracranial carotid plaque features were evaluated. A total of 363 patients (mean age: 61.2±10.4 years old; 254 males) were included. In the left symptomatic cerebrovascular group (n=186), carotid moderate-to-severe stenosis (odds ratio [OR], 3.00 [95% CI, 1.03–8.79]; P =0.045), intraplaque hemorrhage (OR, 3.68 [95% CI, 1.21–11.19]; P =0.021), fibrous cap rupture (OR, 5.70 [95% CI, 1.60–20.31]; P =0.007), and high-risk plaque (OR, 2.95 [95% CI, 1.19–7.35]; P =0.020) were significantly associated with ipsilateral severe MCA stenosis, after adjusting for confounding factors. In the right symptomatic cerebrovascular group (n=177), severe MCA stenosis was significantly associated with ipsilateral carotid moderate-to-severe stenosis (OR, 3.98 [95% CI, 1.54–10.32]; P =0.004) but not with other extracranial carotid plaque features (all P >0.05), after adjusting for confounding factors. Conclusions: In the symptomatic arteries, vulnerable plaque features are independently associated with ipsilateral severe MCA stenosis on the left side, but this association is not found on the right side, indicating the associations of atherosclerotic disease between intracranial and extracranial carotid arteries are asymmetrical.

APA, Harvard, Vancouver, ISO, and other styles

10

Każmierski, Piotr, Michał Pająk, Justyna Kruś-Hadała, Mateusz Jęckowski, and Katarzyna Bogusiak. "Screening tool for extracranial carotid lesions detection in patients of outpatient vascular clinic." Polish Journal of Surgery 91, no. 5 (August 31, 2019): 1–5. http://dx.doi.org/10.5604/01.3001.0013.4520.

Full text

Abstract:

Purpose The objective of the study was to evaluate the frequency and severity of atherosclerotic lesions in extracranial sections of carotid arteries and to determine the level of the correlation between these lesions and symptoms of cerebral ischemia. Secondly, to identify the most common risk factors of ischaemic stroke occurrence in population of patients of vascular outpatient clinic. Material and Methods Prospective study was conducted on a group of 1,000 people (217 women and 783 men), aged 50 to 86 years, the average age was 62 years (± 9.95). Results Atherosclerotic lesions of carotid arteries were observed in 670 examined people (67%). In 63 cases (6.3%) carotid artery occlusion was revealed. Patients with symptomatic carotid artery stenosis more frequently were addicted to cigarettes and suffered from hypertension in comparison to asymptomatic group. A statistically significant correlation between the TIA or ischemic stroke and smoking were noticed, as well as between TIA/ischemic stroke and hypertension Conclusions Among patients with atherosclerosis of peripheral arteries atherosclerotic lesions in the extracranial carotid sections occur with a high frequency. Statistically significant differences in the incidence and severity of atherosclerotic lesions in the carotid arteries were observed in this group. A statistically significant correlation was revealed between the prevalence and severity of atherosclerosis in the carotid arteries in symptomatic patients and smoking and hypertension. Performing screening in patients with atherosclerosis of the abdominal aorta and/or lower limb arteries may detect significant carotid artery stenosis, requiring surgical intervention.

APA, Harvard, Vancouver, ISO, and other styles

11

Borota, Ljubisa, Ehab Mahmoud, and Christoffer Nyberg. "Neuroform Atlas stent in treatment of iatrogenic dissections of extracranial internal carotid and vertebral arteries: a single-centre experience." Interventional Neuroradiology 25, no. 4 (February 25, 2019): 390–96. http://dx.doi.org/10.1177/1591019919830215.

Full text

Abstract:

Aim of the study To present our experience in the treatment of iatrogenic dissections of extracranial internal carotid and vertebral arteries with the Neuroform Atlas stent. Materials and methods Between January 2017 and February 2018 we treated iatrogenic dissections of three internal carotid arteries and three vertebral arteries. These iatrogenic dissections occurred during the endovascular treatment of ruptured and unruptured intracranial aneurysms. The indication for stenting was haemodynamically significant, flow-limiting dissection with threatening flow arrest. In all six cases, the dissections were treated by placement of Neuroform Atlas stents in the dissected segments of internal carotid or vertebral arteries. Deployment of the stent was followed by the usual dual antiplatelet regimen. Results Single or multiple Neuroform Atlas stents were deployed without any technical difficulties, and blood flow was restored immediately after placement of the stents in all six cases. Midterm follow-up (6–8 months) showed complete reconstruction of the shape and lumen of all treated arteries, with negligible intimal hyperplasia. Conclusion Our results indicate that a favourable outcome can be achieved by treating iatrogenic dissections of extracranial internal carotid and vertebral arteries with the Neuroform Atlas stent.

APA, Harvard, Vancouver, ISO, and other styles

12

Rosovsky, Mark A., and Andrew W. Litt. "MR ANGIOGRAPHY OF THE EXTRACRANIAL CAROTID ARTERIES." Magnetic Resonance Imaging Clinics of North America 3, no. 3 (August 1995): 439–54. http://dx.doi.org/10.1016/s1064-9689(21)00255-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

HANAKITA, Junya, Hideyuki SUWA, Shogo NISHI, Fumihito OHTA, and Hiroshi SAKAIDA. "Bilateral Aneurysms of Extracranial Internal Carotid Arteries." Neurologia medico-chirurgica 31, no. 13 (1991): 972–77. http://dx.doi.org/10.2176/nmc.31.972.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Yadav, Jay S., Gary S. Roubin, Sriram Iyer, Jiri Vitek, Peter King, William D. Jordan, and Winfield S. Fisher. "Elective Stenting of the Extracranial Carotid Arteries." Circulation 95, no. 2 (January 21, 1997): 376–81. http://dx.doi.org/10.1161/01.cir.95.2.376.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Cloft, Harry J., Mary E. Jensen, and David F. Kallmes. "Effective stenting of the extracranial carotid arteries." Academic Radiology 5, no. 8 (August 1998): 578–80. http://dx.doi.org/10.1016/s1076-6332(98)80210-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Lammie, G. Alistair, Peter A. G. Sandercock, and Martin S. Dennis. "Recently Occluded Intracranial and Extracranial Carotid Arteries." Stroke 30, no. 7 (July 1999): 1319–25. http://dx.doi.org/10.1161/01.str.30.7.1319.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Hua, Le H., Robert L. Dodd, and Neil E. Schwartz. "Concurrent Stenoocclusive Disease of Intracranial and Extracranial Arteries in a Patient with Polycythemia Vera." Case Reports in Medicine 2012 (2012): 1–3. http://dx.doi.org/10.1155/2012/151767.

Full text

Abstract:

Moyamoya disease is a stenoocclusive disease involving the intracranial carotid and proximal middle cerebral arteries. There are rarely any additional extracranial stenoses occurring concurrently with moyamoya. The pathophysiology of moyamoya remains obscure, but hematologic disorders, notably sickle-cell anemia, have been associated in some cases. We describe the novel case of polycythemia vera associated with severe steno-occlusive disease of both intracranial and extracranial large arteries. A 47-year-old woman with polycythemia vera had multiple transient ischemic attacks, and noninvasive vessel imaging revealed steno-occlusive disease of bilateral supraclinoid internal carotid arteries with moyamoya-type collaterals, proximal left subclavian artery, right vertebral artery origin, bilateral renal arteries, superior mesenteric artery, and right common iliac artery. Laboratory workup for systemic vasculitis was negative. She required bilateral direct external carotid to internal carotid bypass procedures and percutaneous balloon angioplasty of her right VA origin stenosis. This case suggests that hematologic disorders can lead to vessel stenoses and occlusion. The pathophysiology may be due to a prothrombotic state leading to repeated endothelial injury, resultant intimal hyperplasia, and progressive steno-occlusion.

APA, Harvard, Vancouver, ISO, and other styles

18

Kaspera, Wojciech, Henryk Majchrzak, Piotr Ładziński, and Witold Tomalski. "Color Doppler Sonographic Evaluation of Collateral Circulation in Patients with Cerebral Aneurysms and the Occlusion of the Brachiocephalic Vessels." Neurosurgery 57, no. 6 (December 1, 2005): 1117–26. http://dx.doi.org/10.1227/01.neu.0000186009.62401.3c.

Full text

Abstract:

Abstract OBJECTIVE: The objective of this study was to assess the collateral circulation and blood flow velocity in arteries forming collateral circulation in patients with cerebral aneurysms and the occlusion of the brachiocephalic vessels. METHODS: Between 1989 and 2004 we examined a group of seven consecutive patients with diagnosed cerebral aneurysm and occlusion of the extracranial artery by means of cerebral angiography, transcranial color-coded sonography (TCCS) and color Doppler sonography of extracranial arteries. The Doppler examination results achieved in this group were compared with the Doppler results of 40 healthy subjects from a control group. RESULTS: Three patients were diagnosed with an occluded innominate artery. In four other cases an occlusion of the extracranial segment of the internal carotid artery was found. The aneurysms were located on intracranial arteries of collateral flow. The innominate artery occlusion resulted in a hemodynamic effect which was a complete vertebral steal and systolic deceleration (in one case) or alternating flow (in two cases) in the right common carotid artery. An additional route of collateral circulation in all these cases led from extracranial carotid branches through the right external carotid artery to the ipsilateral internal carotid artery. In all seven patients, 13 intracranial collateral pathways were examined. In eight of them, including four cases with cerebral aneurysms, an increase in blood flow velocity was observed. In the remaining five cases, including three cases with cerebral aneurysms, the mean blood velocity was within the normal range. The anterior communicating artery (AComA) formed the main intracranial collateral pathway which was found in seven patients, including three patients with diagnosed AComA aneurysm. Blood flow velocity in ipsilateral (on the obstructed side) and contralateral (on the unobstructed side) anterior cerebral artery, as well as pulsatility and resistance indexes in contralateral anterior cerebral and middle cerebral arteries were higher compared with healthy control subjects. In the ipsilateral middle cerebral artery a relative, insignificant decrease of pulsatility and resistance indexes was detected. Ipsilateral and contralateral middle cerebral artery blood flow velocities were lower compared with the control group. CONCLUSION: Occlusion of the brachiocephalic vessels leads to formation of collateral circulation through the circle of Willis and the extracranial collaterals connecting the external and internal carotid arteries. An increase in blood flow velocity is commonly observed in intracranial arteries forming a collateral pathways. In some cases, not excluding arteries with a cerebral aneurysm, the increase in blood flow velocity is insignificant or none at all. This study shows that formation of a cerebral aneurysm is not always related to an increase in the flow velocity of collateral arteries.

APA, Harvard, Vancouver, ISO, and other styles

19

Opincariu, Diana, András Mester, Imre Benedek, and István Benedek. "Stem Cell Therapies in Peripheral Vascular Diseases — Current Status." Journal of Interdisciplinary Medicine 2, s4 (December 1, 2017): 12–19. http://dx.doi.org/10.1515/jim-2017-0093.

Full text

Abstract:

AbstractPeripheral artery diseases include all arterial diseases with the exception of coronary and aortic involvement, more specifically diseases of the extracranial carotids, upper limb arteries, mesenteric and renal vessels, and last but not least, lower limb arteries. Mononuclear stem cells, harvested from various sites (bone marrow, peripheral blood, mesenchymal cells, adipose-derived stem cells) have been studied as a treatment option for alleviating symptoms in peripheral artery disease, as potential stimulators for therapeutic angiogenesis, thus improving vascularization of the ischemic tissue. The aim of this manuscript was to review current medical literature on a novel treatment method — cell therapy, in patients with various peripheral vascular diseases, including carotid, renal, mesenteric artery disease, thromboangiitis obliterans, as well as upper and lower limb artery disease.

APA, Harvard, Vancouver, ISO, and other styles

20

Ewida, Amr, Rashid Ahmed, Anqi Luo, and Hesham Masoud. "Spontaneous dissection of bilateral internal carotid and vertebral arteries." BMJ Case Reports 14, no. 3 (March 2021): e241173. http://dx.doi.org/10.1136/bcr-2020-241173.

Full text

Abstract:

Spontaneous dissection of the major arteries of the neck is known to increase the risk of stroke or transient ischaemic attack in young and middle-aged adults. Most of the reported cases of arterial dissections in the neck involve one or both paired extracranial carotid or vertebral arteries. Spontaneous dissection of the bilateral internal carotid and vertebral arteries is extremely rare. We report a case of spontaneous bilateral internal carotid artery and vertebral artery dissection while using a prescribed pill for weight loss which contained amphetamine derivative. A review of literature is also provided.

APA, Harvard, Vancouver, ISO, and other styles

21

Bahomail, Ahmed Awadh, Buthaina Saeed Ahmed Alaghbari, and Khaldoon Ali Salem Hitham. "ROLE OF NON-CONTRAST MAGNETIC RESONANCE ANGIOGRAPHY IN THE DIAGNOSIS OF THE ATHEROSCLEROTIC LESIONS OF THE EXTRACRANIAL CAROTID ARTERIES." Electronic Journal of University of Aden for Basic and Applied Sciences 3, no. 4 (December 31, 2022): 253–62. http://dx.doi.org/10.47372/ejua-ba.2022.4.194.

Full text

Abstract:

Formation of atherosclerotic plaque in the carotid arteries is the leading factor of hemodynamic disturbance in the cere-bral arteries. Visualization and characteristic of these plaques are most important factors from the viewpoint of preven-tive treatment- surgical or conservative. The goal of this study was to assess sensitivity and specificity of non-contrast MRA in evaluation and characteristics of atherosclerotic plaques in the extracranial carotid arteries. Our data was ob-tained from 130 patients: 38 were female (29.2%) and 92-male (70.8%). The middle age is 54.8 years (range 17-78 years). Patients were subjected to 3 diagnosis procedures, namely 85 patients were investigated by Doppler USG & 45 patients by MRA method. All patients underwent selective cerebral arterial angiography by DSA as a gold standard method. From 130 patients 27 patients had no atherosclerotic disease; 57 had bilateral atherosclerotic changes; 46 pa-tients had monolateral carotid atherosclerotic process. From 260 investigated carotid arteries 51 arteries were detected with complete occlusion (22 right and 21 left occlusion), in 4 patients (8 carotid arteries) bilateral occlusion was seen. 54 carotid arteries had severe degree of stenosis. From this stenosis 27 arteries were more than 90%.32 carotid arteries had moderate degree of stenosis. In 23 carotid arteries mild degree was seen, but in a 100 carotid arteries had complete pa-tency. We concluded that complex noninvasive methods- colored Doppler USG and non-contrast MRA distinguished good accuracy (90%) and may be used as an alternative to DSA.

APA, Harvard, Vancouver, ISO, and other styles

22

Hughes, Joseph P., Gary R. Bowman, Rick Dubin, Terence A. Cochran, Francis J. Porreca, Denise Kalisz, and Michael P. Rush. "Prevalence of Carotid Siphon Stenosis in Patients Referred for Cerebrovascular Evaluation." Journal for Vascular Ultrasound 31, no. 2 (June 2007): 97–102. http://dx.doi.org/10.1177/154431670703100206.

Full text

Abstract:

Introduction The carotid siphon is second only to the carotid bifurcation in the prevalence of hemodynamically significant atherosclerotic plaque formation, yet few noninvasive vascular laboratories report interrogation of this region during routine noninvasive vascular evaluations. The purpose of this investigation was to determine the prevalence of carotid siphon stenosis in patients referred for noninvasive cerebrovascular evaluation. Materials and Methods During a 2-month period, 178 patients (94 male, 84 female, mean age, 71.8 years) were referred to the vascular laboratory for cerebrovascular evaluation, which included interrogation of the extracranial carotid, vertebral, and subclavian arteries as well as the intracranial ophthalmic artery and carotid siphon. All intracranial examinations were performed using a phased array imaging transducer (2–4 MHz). Results Ten patients (6%, 10/178) were found to have hemodynamically significant carotid siphon stenosis. There was a statistically significant association between the presence of carotid siphon stenosis and cervical bruit ( p ≤ 0.05), follow-up of known extracranial carotid artery atherosclerosis ( p ≤ 0.001), and a combination of hypertension, hyperlipidemia, and coronary artery disease ( p ≤ 0.01). Conclusion Investigation of the carotid siphon is worthwhile when performed in conjunction with extracranial carotid duplex examinations. Siphon lesions detected during the cerebrovascular examination, especially in those with cervical bruits, known extracranial atherosclerotic disease, and combinations of risk factors, may affect medical or interventional therapy and can lead to a reduction in neurovascular events.

APA, Harvard, Vancouver, ISO, and other styles

23

Tellapuri, S., P. D. Sutphin, S. P. Kalva, and R. F. Mattrey. "Contrast-Enhanced Ultrasound in the Assessment of Carotid Atherosclerotic Disease: A Review." Neurographics 11, no. 1 (January 1, 2021): 38–48. http://dx.doi.org/10.3174/ng.2000026.

Full text

Abstract:

Contrast-enhanced sonography is a safe, radiation-free, and minimally invasive imaging technique. It takes advantage of the nonlinear behavior of microbubble contrast agents to produce microbubble-only images, which allows for the assessment of the extracranial carotid arteries, with a minuscule total dose of <1 mL. This review highlights the current status of extracranial carotid sonography imaging, including plaque characterization when using standard and contrast-enhanced sonography.Learning Objective: Describe risk factors associated with ischemic stroke and the associated imaging features and how contrast-enhanced sonography can provide direct evaluation for carotid artery stenosis as well as characterization of atherosclerotic plaque.

APA, Harvard, Vancouver, ISO, and other styles

24

Felber, Stephan, Hans Henkes, Werner Weber, Elina Miloslavski, Stefan Brew, and Dietmar Kühne. "Treatment of Extracranial and Intracranial Aneurysms and Arteriovenous Fistulae Using Stent Grafts." Neurosurgery 55, no. 3 (September 1, 2004): 631–39. http://dx.doi.org/10.1227/01.neu.0000134455.02947.1f.

Full text

Abstract:

Abstract OBJECTIVE: Treatment of 11 patients with aneurysms or arteriovenous fistulae of the craniocervical arteries with stent grafts. METHODS: Peripheral stent grafts were deployed in two extracranial internal carotid arteries. Coronary stent grafts were used to treat two giant aneurysms, five direct carotid-cavernous fistulae, one vertebrojugular fistula, and two dissecting aneurysms of the vertebral artery (V2 and V4). RESULTS: Stent grafts were used successfully in two extracranial internal carotid and two extracranial vertebral arteries, one dissecting aneurysm of the intracranial vertebral artery, one giant aneurysm and one pseudoaneurysm of the cavernous internal carotid artery, and five direct carotid-cavernous sinus fistulae. Angiographic follow-up examinations (available in nine patients; obtained at 3 mo to 5 yr; average, 24 mo) revealed normal vessel caliber, and the stent grafts in all 9 of 11 initial patients were patent. There was a recurrent saccular aneurysm adjacent to the stent graft in the patient with the intracranial vertebral artery aneurysm. The following five complications were encountered: transient hemiparesis (n = 2), increased hemiparesis, post-procedural management-related fatality, and ICA dissection. In six patients, stent graft deployment was accomplished without any technical or clinical complication. There were no permanent neurological deficits consequent to stent graft placement. CONCLUSION: Stent grafts are a useful tool for the endovascular treatment of head and neck aneurysms and direct arteriovenous fistulae in selected patients. The major disadvantage of the currently available stent grafts is their lack of mechanical flexibility. Maneuvering stent grafts in the intracranial arteries carries the risk of iatrogenic vessel dissection and may require supportive measures and protection of the target site by conventional stents.

APA, Harvard, Vancouver, ISO, and other styles

25

Kabak, S. L., I. K. Gaidel', Yu M. Mel'nichenko, and T. I. Kalenchits. "Asymptomatic Complete Occlusion of Extracranial Internal Carotid Artery: A Case Report." Journal of Anatomy and Histopathology 10, no. 2 (July 15, 2021): 80–83. http://dx.doi.org/10.18499/2225-7357-2021-10-2-80-83.

Full text

Abstract:

This article reports on head-and-neck computed tomography angiography imaging findings and data of ultrasound examination of the extracranial carotid and vertebral arteries of 69-year-old patient with unilateral asymptomatic complete occlusion of extracranial internal carotid artery (ICA) in combination with unusually elongated styloid processes of temporal bone. The aim of the study was to specify the collateral pathways blood supply to the brain and to assess the possible clinical significance of an abnormally elongated styloid pro cess. Adequate cerebral blood flow was provided by anastomoses between the arteries at the base of the brain. This can explain the asymptomatic unilateral complete occlusion of the extracranial ICA. Occlusion of the artery was not associated with the presence of a 5.5 cm styloid process. Computed tomography angiography is a highly informative method for visualizing the individual morphological variants to clarify their clinical significance.

APA, Harvard, Vancouver, ISO, and other styles

26

Liu, H., X. Wu, Y. Xing, K. Liu, and H. Zhang. "Neurology (Stroke)." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 42, S1 (May 2015): S36. http://dx.doi.org/10.1017/cjn.2015.165.

Full text

Abstract:

Background: Cerebral artery stenosis is an important risk factor for ischemic strokes. This study aims to explore intracranial and extracranial artery stenosis in a large northeast Chinese cohort. Methods: We recruited 14793 outpatients and hospitalized patients to identify cerebral artery stenosis. Artery stenosis screening was done with transcranial Doppler (TCD) for intracranial arteries and carotid duplex sonography for extracranial arteries. Results: More intracranial than extracranial artery stenoses were identified (4255 versus 2809, i.e. 28.8% versus 19.0%, P<0.05). Similarly, mere intracranial stenosis was significantly more common than extracranial artery stenosis in this population (2632 versus 1186, i.e. 17.8% versus 8%, P<0.05). Among all identified intracranial arteries stenoses, the proportion of middle cerebral artery (MCA) stenosis was the highest. More intracranial than extracranial artery stenoses was seen within each age group, and rates of both increased with age. Intracranial and extracranial artery stenosis was more frequently identified in males than females. Conclusions: Incidence of cerebral artery stenosis in the population increases with age. Intracranial artery stenosis is more common than extracranial artery stenosis and the MCA stenosis accounted for the highest proportion, within each age group. More males suffer from intracranial or extracranial artery stenosis than females.

APA, Harvard, Vancouver, ISO, and other styles

27

Henry, Michel, Max Amor, Isabelle Masson, Isabelle Henry, Kiril Tzvetanov, Zukaï Chati, and Narendra Khanna. "Angioplasty and Stenting of the Extracranial Carotid Arteries." Journal of Endovascular Surgery 5, no. 4 (November 1998): 293–304. http://dx.doi.org/10.1583/1074-6218(1998)005<0293:aasote>2.0.co;2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Henry, Michel, Max Amor, Isabelle Masson, Isabelle Henry, Kiril Tzvetanov, Zukaï Chati, and Narendra Khanna. "Angioplasty and Stenting of the Extracranial Carotid Arteries." Journal of Endovascular Therapy 5, no. 4 (November 1998): 293–304. http://dx.doi.org/10.1177/152660289800500402.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Milandre, L., S. P�rot, G. Salamon, and R. Khalil. "Spontaneous dissection of both extracranial internal carotid arteries." Neuroradiology 31, no. 5 (November 1989): 435–39. http://dx.doi.org/10.1007/bf00343871.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Duncan, Ian C., and Pieter A. Fourie. "Percutaneous Management of Concomitant Post-Traumatic High Vertebrovertebral and Caroticojugular Fistulas Using Balloons, Coils, and a Covered Stent." Journal of Endovascular Therapy 10, no. 5 (October 2003): 882–86. http://dx.doi.org/10.1177/152660280301000506.

Full text

Abstract:

Purpose: To describe the endovascular management of vertebrovertebral and caroticojugular fistulas in the same patient using a combination of endovascular techniques including covered stent placement in the high extracranial internal carotid artery. Case Report: A 22-year-old man presented with ipsilateral vertebrovertebral and caroticojugular fistulas at the C1 level several weeks after sustaining a solitary penetrating knife injury below the right ear. The right vertebral artery was sacrificed after a failed endovascular attempt to close the vertebrovertebral fistula. The caroticojugular fistula was treated with a self-expanding covered stent (Wallgraft) with exclusion of the fistula and preservation of flow through the carotid artery. Conclusions: Preservation of the extracranial arteries should be the preferred goal of treatment in traumatic extracranial arteriovenous fistulas. The use of covered stents in the extracranial vessels can accomplish this goal.

APA, Harvard, Vancouver, ISO, and other styles

31

Vucaj-Cirilovic, Viktorija, Milos Lucic, Kosta Petrovic, Olivera Nikolic, Mira Govorcin, and Sanja Stojanovic. "Color doppler ultrasonography and multislice computer tomography angiography in carotid plaque detection and characterization." Vojnosanitetski pregled 68, no. 5 (2011): 423–29. http://dx.doi.org/10.2298/vsp1105423v.

Full text

Abstract:

Beckground/Aim. Cerebrovascular diseases are the third leading cause of mortality in the world, following malignant and cardiovascular diseases. Therefore, their timely and precise diagnostics is of great importance. The aim of this study was to compare duplex scan Color Doppler ultrasonography (CDU) with multislice computed tomography angiography (MSCTA) in detection of morphological and functional disorders at extracranial level of carotid arteries. Methods. The study included 75 patients with 150 carotid arteries examined in the period from January 2008 to April 2009. The patients were firstly examined by CDU, then MSCTA, followed by the surgery of extracranial segment of carotid arteries. In 10 patients, the obtained material was referred for histopathological (HP) examination. We used both CDU and MSCT in the analysis of: plaque surface, plaque structure, degree of stenosis, and the presence of intraplaque hemorrhage. Results. The results obtained by CDU and MSCTA were first compared between themselves, and then to intraoperative findings. Retrospective analysis showed that MSCTA is more sensitive than CDU in assessment of plaque surface (for smooth plaques CDU 89% : MSCTA 97%; for plaques with irregular surface CDU 75% : MSCTA 87%; for ulcerations CDU 54% : MSCTA 87%). Regarding determination of plaque structure (mixed plaque CDU 66% : MSCTA 70%; correlation with HP findings CDU 94% : MSCTA 96%) and localization (CDU 63% : MSCTA 65%), and in terms of sensitivity and specificity, both methods showed almost the same results. Also, there is no statistical difference between these two methods for the degree of stenosis (CDU 96% : MSCTA 98%). Conclusion. Atherosclerotic disease of extracranial part of carotid arteries primarily affects population of middle-aged and elderly, showing more associated risk factors. Sensitivity and specificity of CDU and MSCTA regarding plaque composition, the degree of stenosis and plaque localization are almost the same. These results and the fact that there are no adverse effects (high radiation dose) compared to MSCTA indicate that CDU should be the initial method in diagnostic algorythm for carotid arteries.

APA, Harvard, Vancouver, ISO, and other styles

32

Echefu, Gift, Rameela Mahat, Raju Vatsavai, and Steven Zuckerman. "Spontaneous Dissections of Bilateral Internal Carotid and Vertebral Arteries due to Intractable Vomiting." Case Reports in Vascular Medicine 2022 (April 11, 2022): 1–5. http://dx.doi.org/10.1155/2022/8156047.

Full text

Abstract:

In young adults, spontaneous craniocervical arterial dissections (sCAD), which involve the major arteries of the head and neck, are associated with an increased risk of stroke. sCAD occurs in the absence of major trauma as seen in traumatic craniocervical artery dissection. It may affect unilateral or bilateral carotid or vertebral arteries. Cases of spontaneous bilateral carotid and vertebral artery dissections occurring simultaneously are extremely rare. We present a case of a 49-year-old female with no history of arteriopathy who presented with aphasia and right upper extremity weakness and was found to have dissections in bilateral extracranial and intracranial carotid arteries, as well as the bilateral vertebral arteries. She had symptomatic improvement with antithrombotic therapy and aggressive outpatient rehabilitation.

APA, Harvard, Vancouver, ISO, and other styles

33

Tanaka, Saichiro, Yasuyuki Kimura, and Mitsuru Furukawa. "Pseudoaneurysm of the carotid artery with haemorrhage into the hypopharynx." Journal of Laryngology & Otology 109, no. 9 (September 1995): 889–91. http://dx.doi.org/10.1017/s0022215100131603.

Full text

Abstract:

AbstractPseudoaneurysms of the extracranial carotid arteries are rarely seen following irradiation for cancers of the head and neck. We present a patient with a pseudoaneurysm of the common carotid artery following a radical neck dissection and irradiation for thyroid carcinoma 20 years earlier. Following oesophagoscopical examination, a pseudoaneurysm of the right common carotid artery ruptured into the piriform sinus. The common carotid artery was embolized with multiple coils and the bleeding was halted. The relationship between the carotid artery aneurysm and irradiation, and the treatment of carotid artery aneurysm, is discussed.

APA, Harvard, Vancouver, ISO, and other styles

34

Ryu, Jaiyoung, Nerissa Ko, Xiao Hu, and Shawn C. Shadden. "Numerical Investigation of Vasospasm Detection by Extracranial Blood Velocity Ratios." Cerebrovascular Diseases 43, no. 5-6 (2017): 214–22. http://dx.doi.org/10.1159/000454992.

Full text

Abstract:

Background: Early diagnosis of vasospasm following subarachnoid hemorrhage can prevent cerebral ischemia and improve neurological outcomes. This study numerically evaluates the relevance of extracranial blood velocity indices to detect vasospasm. Methods: A numerical model of cerebral blood flow was used to evaluate the hemodynamics associated with anterior and posterior vasospasm under normal and impaired cerebral autoregulation conditions. Extracranial blood velocities at the carotid and vertebral arteries and their ratios between ipsilateral and contralateral, anterior and posterior, and downstream and upstream arteries were monitored during vasospasm progression. Results: For current clinical indices that track blood velocities at vasospastic arterial segments using transcranial Doppler (TCD), we observed that velocities increased initially and then decreased with vasospasm progression. This nonmonotonic behavior can lead to false-negative decisions in moderate to severe vasospasm. Alternatively, volumetric flow decreased monotonically at the affected arteries, leading to blood velocities upstream of the vasospastic artery also decreasing monotonically. Based on this principle, we demonstrate that velocity ratios between the carotid and vertebral arteries may better identify moderate to severe vasospasm and improve sensitivity and specificity of vasospasm detection. Conclusion. The velocity indices proposed in this study may enable new or improved noninvasive diagnosis of vasospasm using extracranial Doppler ultrasound. Compared to current clinical indices, the new indices may improve the handling of (1) scenarios of severe vasospasm or impaired cerebral autoregulation, (2) systemic changes in blood pressure and cardiac output, (3) vasospasm occurring in arteries distal to the cerebral circle region, and (4) cases with insufficient acoustic bone window for TCD. The results provide a concrete basis for future clinical evaluation of extracranial indices for vasospasm detection.

APA, Harvard, Vancouver, ISO, and other styles

35

Miura, Isamu, Akitsugu Kawashima, Masataka Hayashi, Akane Tanda, Tomomi Ishikawa, and Takakazu Kawamata. "Extracranial internal carotid artery vasospasm during thrombectomy." Neuroradiology Journal 31, no. 3 (September 12, 2017): 313–16. http://dx.doi.org/10.1177/1971400917731118.

Full text

Abstract:

The use of a stent retriever increases the risk of intracranial vasospasm. Here, we report the case of a man who developed severe vasospasm in a long segment of the extracranial internal carotid artery after mechanical irritation by a stent retriever inserted for the treatment of acute cerebral ischemia. A 47-year-old right-handed man presented with sudden-onset right-sided weakness and difficulty speaking. The patient’s National Institutes of Health Stroke Scale score was 6 and he had an Alberta Stroke Program Early Computed Tomography Score of 9. The patient was started on intravenous alteplase therapy, and an acute thrombectomy was performed. Left internal carotid digital subtraction angiography showed narrowing of the left common and internal carotid arteries and occlusion of the proximal left M1 segment of the middle cerebral artery. A stent retriever was retracted into a guiding catheter placed at the left carotid bulb under continuous suction. Recanalization of the middle cerebral artery was not achieved and there was significant narrowing in a long segment of the extracranial internal carotid artery associated with exacerbation of the patient’s aphasia. The cervical vasospasm improved after nicardipine infusion via the catheter. We encountered vasospasm in a long segment of the extracranial internal carotid artery after mechanical irritation by a stent retriever. If a stent retriever is used in a patient with a narrow extracranial internal carotid artery, consideration should be given to using a Penumbra or smaller guiding catheter located in the distal internal carotid artery to prevent irritation to the cervical vessel wall.

APA, Harvard, Vancouver, ISO, and other styles

36

Uehara, Toshiyuki, Tomoyuki Ohara, Kazunori Toyoda, Kazuyuki Nagatsuka, and Kazuo Minematsu. "Clinical, Laboratory, and Imaging Characteristics of Transient Ischemic Attack Caused by Large Artery Lesions: A Comparison between Carotid and Intracranial Arteries." Cerebrovascular Diseases Extra 5, no. 3 (October 16, 2015): 115–23. http://dx.doi.org/10.1159/000440731.

Full text

Abstract:

Background/Aims: The aims of this study were to determine the differences in clinical characteristics and the risk of ischemic stroke between patients with transient ischemic attack (TIA) attributable to extracranial carotid and intracranial artery occlusive lesions. Methods: Among 445 patients admitted to our stroke care unit within 48 h of TIA onset between April 2008 and December 2013, 85 patients (63 men, mean age 69.4 years) with large artery occlusive lesions relevant to symptoms were included in this study. The primary endpoints were ischemic stroke at 2 and 90 days after TIA onset. Results: Twenty-eight patients had carotid artery occlusive lesions (extracranial group), and 57 patients had intracranial artery occlusive lesions (intracranial group). Patients in the intracranial group were significantly younger, had lower levels of fibrinogen, and were less likely to have occlusion when compared with those in the extracranial group. Eleven patients in the extracranial group and none in the intracranial group underwent revascularization procedures within 90 days of TIA onset. The 2-day risk (14.2 vs. 0%, p = 0.044) and the 90-day risk (17.1 vs. 0%, p = 0.020) of ischemic stroke after TIA onset were significantly higher in the intracranial group than in the extracranial group. Conclusions: Among our patients with TIA caused by large artery disease, patients with intracranial artery occlusive lesions were more frequent and were at higher risk of early ischemic stroke than those with extracranial carotid artery occlusive lesions. These data highlight the importance of prompt assessment of intracranial artery lesions in patients with TIA.

APA, Harvard, Vancouver, ISO, and other styles

37

Evans, Katie, Gurpreet K. Birk, and George A. Antoniou. "Diagnosing Pseudoaneurysm of the Extracranial Carotid Arteries Using Doppler Ultrasonography: A Case Report." Journal for Vascular Ultrasound 42, no. 3 (June 25, 2018): 123–26. http://dx.doi.org/10.1177/1544316718782931.

Full text

Abstract:

Carotid artery pseudoaneurysms are a rare complication of carotid endarterectomy, with few recorded in the literature. We describe a case of a 56-year-old man who presented with symptoms of left hemispheric transient ischemic attack and subsequently underwent a carotid endarterectomy. The patient returned to Accident and Emergency department with an ipsilateral neck swelling found to be an extracranial pseudoaneurysm. Doppler ultrasound imaging was used throughout the management of this patient from preendarterectomy to postpseudoaneurysm bypass. This report discusses the importance of ultrasonography in the diagnosis and follow-up of carotid pseudoaneurysms.

APA, Harvard, Vancouver, ISO, and other styles

38

Campbell, David R. "Carotid Artery Disease." Diabetes Educator 11, no. 1 (March 1985): 37–39. http://dx.doi.org/10.1177/014572178501100107.

Full text

Abstract:

Because macroangiopathy is a ma jor complication of diabetes, evalua tion of the carotid arteries for possible obstruction is of primary importance. Patients with transient ischemic at tacks, a precursor of strokes, are liable to have either a mechanical reduction of flow secondary to stenosis or a re lease of emboli from extracranial plaques. After a definitive diagnosis by angiogram, dissection of a tight lesion is indicated. Asymptomatic bruits should be evaluated by noninvasive techniques for possible prophylactic endarterectomy.

APA, Harvard, Vancouver, ISO, and other styles

39

Bollipo, Johny Prasad, and Pasupuleti Bhimeswara Rao. "Color doppler assessment of extra cranial carotid arteries in carotid artery disease with correlation of risk factors in predicting cerebro vascular accident in patients with carotid atheromatous disease." International Journal of Advances in Medicine 5, no. 6 (November 22, 2018): 1402. http://dx.doi.org/10.18203/2349-3933.ijam20184718.

Full text

Abstract:

Background: Stroke is a clinical syndrome, which describes a sudden neurological deficit of presumed vascular origin. The risk factors for stroke are diabetes mellitus, smoking, alcohol and hypertension. Colour doppler ultrasound is one of the important tool for the evaluation of exracranial insufficiency of the carotid arteries. This study was performed to assess the carotid arteries with the help of color doppler in carotid artery disease.Methods: Of the 100 patients who had come to our department during the study period with symptoms of cerebrovascular disease such as transient episodes of neurological dysfunction, sudden weakness or numbness, hemiparesis, focal neurological deficits, sudden loss of consciousness, altered sensorium, aphasia, slurring of speech, diminution or loss of vision were included into the study. CT scan of brain and color doppler evaluation for the extracranial carotid arteries was done for all the patients to assess the atheromatous disease of extracranial carotid arteries and comparison with brain changes in cerebrovascular disease patients.Results: Of the 100 patients included into the study, 51% were males and 49% were females. 59% of the patients were above 61 years of age, 24% of them were between 51-60 years and 12% were between 41-50 years. 82% of the patients had the presence of atherosclerotic plaque while 18% had increased intima-media thickness without the plaque. Among the patients with atherosclerotic plaque, 63.4% had diabetes and 68.3% had hypertension. <50% stenosis was seen among 45.1% of the patients while 36.6% had between 50-70%. Near total occlusion was seen in 6.1% of the patients.Conclusions: The color Doppler sonography is a useful tool in evaluation of extra cranial course of carotid vessels. It is a non-invasive, cheap, faster modality without any side effects. Therefore, it could be used in predicting CVA in patients with carotid atheromatous disease.

APA, Harvard, Vancouver, ISO, and other styles

40

Sutia, Dedi, Syarif Indra, Hendra Permana, and Rizki Muhammad Rananda. "GAMBARAN ULTRASONOGRAFI PLAK ARTERI KAROTIS." Human Care Journal 5, no. 2 (May 25, 2020): 436. http://dx.doi.org/10.32883/hcj.v5i2.759.

Full text

Abstract:

Duplex Carotid Ultrasonography is non invasive and friendly examination, used to observe carotid artery. About 20-30% from total stroke cases, caused by extracranial carotid artery abnormalities. Atherosclerosis plaque at carotid artery is suspected as the etiology for more than 80% cerebral thromboembolism. Aim : to find out ultrasonography image at carotid artery plaque. Method : the method of this study is literature review towards experimental articles which were published internationally at Pubmed / Medline database from 1977 – 2015. The literature study is arranged based on Walker and Avant guideline, which is consist of : a) conceptual comprehension; b) aim or role identification; c) concept identification and the relation with role and aim. Result : carotid artery ultrasonography examination covers common carotid artery, proximal internal and external carotid artery analysis. Parts to notice are artery diameter, carotid bulbous, intimal medial thickness, flow velocity, type of wave, present of plaque, also artery abnormalities, such as dysplasia, coiling, kinking, and tortuosity. Conclusion : atherosclerosis plaque imaging with conventional ultrasonography is a relative easy, affordable and non invasive technique with specificity and sensitivity level equal with other imaging modalities.

APA, Harvard, Vancouver, ISO, and other styles

41

Worley, G. A., J. D. Hern, G. J. O'Sullivan, P. Tassone, and A. E. Hinton. "Mycotic aneurysm of the external carotid artery." Journal of Laryngology & Otology 112, no. 8 (August 1998): 793–95. http://dx.doi.org/10.1017/s0022215100141738.

Full text

Abstract:

AbstractMycotic aneurysms of the extracranial carotid arteries are extremely rare. A case is reported of a false aneurysm of the left external carotid artery. This developed secondary to cervical lymphadenitis which did not settle with high dose antibiotic therapy. The diagnosis was made on investigation with carotid doppler ultrasound and confirmed with computerized tomography. Digital subtraction angiography was performed to highlight the vascular anatomy. In addition percutaneous balloon catheter control of blood flow in the external carotid artery was used as an adjunct to surgical management.

APA, Harvard, Vancouver, ISO, and other styles

42

Edelman, R. R., H. P. Mattle, B. Wallner, R. Bajakian, J. Kleefield, C. Kent, J. J. Skillman, J. B. Mendel, and D. J. Atkinson. "Extracranial carotid arteries: evaluation with "black blood" MR angiography." Radiology 177, no. 1 (October 1990): 45–50. http://dx.doi.org/10.1148/radiology.177.1.2399337.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

KOÇARSLAN, Aydemir, Mehmet Salih AYDIN, Mert ÜRKÜP, Abdüssemet HAZAR, and Mustafa GÖZ. "Bilateral Extracranial Internal Carotid Artery Aneurysm: Original Image." Damar Cerrahi Dergisi 25, no. 2 (2016): 97–98. http://dx.doi.org/10.9739/uvcd.2014-39036.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Matsushita, K., F. Akai, M. Taneda, and Y. Yokoi. "Stenting for Extracranial Stenotic Lesions of Carotid and Vertebral Arteries." Interventional Neuroradiology 3, no. 2_suppl (November 1997): 53–58. http://dx.doi.org/10.1177/15910199970030s209.

Full text

Abstract:

We evaluated the feasibility of stenting in four patients. Two cases were vertebral osteal stenosis and the others were carotid stenosis at high position with ulcers. We placed balloon expandable coronary stents by a bared stent technique. The mean preprocedural stenosis (86.58%) was reduced to 13.05%. Patients were examined clinically and angiographically at 1, 3 and 6 months after stenting. There was no minor nor major stroke during and after the procedures. Asymptomatic restenosis occurred in the cases of proximal vertebral arteries. One of these patients needed to repeat balloon dilatation. There were no angiographic restenoses in the location of stenting in the carotid artery. In the treatment for atherosclerotic stenoses, stent placement is a feasible and safe method. However restenosis in a vertebral osteal lesion should be carefully followed after stent placement.

APA, Harvard, Vancouver, ISO, and other styles

45

CİNGÖZ, FARUK, MEHMET ALİ ŞAHİN, FAHRİ GÜRKAN YEŞİL, SUAT DOĞANCI, BİLGEHAN SAVAŞ ÖZ, and MEHMET ARSLAN. "A Huge Extracranial Carotid Artery Aneurysm: Case Report." Damar Cerrahi Dergisi 21, no. 3 (2012): 226–29. http://dx.doi.org/10.9739/uvcd.2012-31154.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Kaplan, M. L. "PATHOLOGIC TORTUOSITY OF CAROTID ARTERIES: BACKGROUND, ETIOLOGY, PREVALENCE, CLASSIFICATION (literature review)." Health and Ecology Issues, no. 1 (March 28, 2013): 11–16. http://dx.doi.org/10.51523/2708-6011.2013-10-1-2.

Full text

Abstract:

The pathology of extracranial arteries plays a significant part in the structure of diseases causing cerebrovascular insufficiency. The article deals with the historical aspects of the treatment and study of carotid artery tortuosity. It describes the questions of etiology and assesses the role of different factors in development of the artery tortuosity. The problems of the study of the carotid artery tortuosity prevalence in population and symptomatic patients, terminology and classification aspects are also covered in this review.

APA, Harvard, Vancouver, ISO, and other styles

47

Leblanc, Richard, Y. Lucas Yamamoto, Jane L. Tyler, and Antoine Hakim. "Hemodynamic and Metabolic Effects of Extracranial Carotid Disease." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 16, no. 1 (February 1989): 51–57. http://dx.doi.org/10.1017/s031716710002850x.

Full text

Abstract:

ABSTRACT:Cerebral blood flow (CBF), cerebral blood volume (CBV), the CBF/CBV ratio – an index of the hemodynamic reserve capacity – the rate of oxygen metabolism (CMRO2), and the fractional extraction of oxygen by the brain (OEF) were studied by positron emission tomography (PET) in the cortical territory of both internal carotid arteries in 15 cases of transiently symptomatic or progressive extracranial atherosclerotic carotid disease. None of the patients had a major stroke or had a significant neurological deficit except 1 whose damaged hemisphere is excluded from study. All were asymptomatic at the time of PET scanning. Values were obtained in the middle cerebral artery (MCA) distribution, and in the anterior and posterior borderzone regions. Eight cases had unilateral carotid stenosis of 80% or greater and 7 had unilateral or bilateral occlusion of the origin of the internal carotid artery. Results obtained in patients were compared using Student's t-test, to those obtained in neurologically normal, elderly volunteers. Patients with carotid stenosis had a significantly decreased CBF (p<.025) and CBF/CBV ratio (p<.025) selectively in the anterior borderzone regions. This was accompanied by a trend toward elevated OEF and declining CMRO2 values. Patients with carotid occlusion had significantly decreased CBF (p<.005), decreased CBF/CBV ratio (p<.005) and decreased CMRO2 (p<.025) in the ipsilateral anterior borderzone and MCA territories. Similar changes were present in the opposite hemisphere of patients with bilateral carotid disease. These results indicate that carotid stenosis is associated with hypoperfusion and diminished hemodynamic reserve capacity in the anterior borderzone, and that carotid occlusion produces more widespread hypoperfusion and metabolic depression.

APA, Harvard, Vancouver, ISO, and other styles

48

Pasternak, Janko, Vladan Popovic, Vladimir Vukobratov, Zoltan Horvat, Jovan Pfau, and Jovan Obradovic. "Surgical treatment of a giant extracranial internal carotid artery aneurysm: A case report." Medical review 60, no. 3-4 (2007): 187–90. http://dx.doi.org/10.2298/mpns0704187p.

Full text

Abstract:

Introduction. True aneurysms of the extracranial internal carotid artery are rare lesions. Surgical treatment is considered to be the best therapeutic option. However, the use of the intraluminal shunt remains controversial. Case report. We reported a case of a giant extracranial internal carotid artery aneurysm treated by reconstructive surgery. A 76-year-old woman was referred with a pulsatile mass inside her mouth, associated with dizziness and dysarthria. There was no history of cerebrovascular symptoms, neck pain, or cervical trauma. A magnetic resonance scan showed a 45 mm aneurysm of the internal carotid artery (ICA), and kinking of ICA. Angiography demonstrated a saccular ICA aneurysm, with a lengthening and tortuosity of the ICA. The aneurysm and the carotid artery branches were easily exposed through a standard anterior cervical incision. After resection of the aneurysm, a Javid shunt was inserted between the common and internal carotid arteries, and end-to-end repair of ICA was easily performed due to ICA redundancy. The aneurysm was of atherosclerotic origin. Four months after the operation, the patient showed a complete recovery from peripheral neurological deficit. Discussion. Our results show that surgical reconstruction is a satisfactory therapeutic choice in the management of extracranial carotid artery aneurysms in order to avoid rupture, thromboembolism and cerebrovascular insufficiency. To date, there has been little experience with endoluminal exclusion techniques and the long-term effectiveness is still uncertain. .

APA, Harvard, Vancouver, ISO, and other styles

49

Al-Mubarak, Nadim, Gary S. Roubin, Sriram S. Iyer, Camilo R. Gomez, Ming W. Liu, and Jiri J. Vitek. "Carotid Stenting for Severe Radiation-Induced Extracranial Carotid Artery Occlusive Disease." Journal of Endovascular Therapy 7, no. 1 (February 2000): 36–40. http://dx.doi.org/10.1177/152660280000700106.

Full text

Abstract:

Purpose: To present our experience with carotid artery stenting as an alternative treatment to endarterectomy in patients with radiation-induced carotid artery occlusive disease. Methods and Results: Fourteen patients (10 males; mean age 61 years, range 52 to 79) underwent percutaneous stenting of 15 carotid arteries for severe radiation-induced extracranial stenoses. Technical success was achieved in all patients, with reduction of the mean stenosis from 77% ± 6% to 8% ± 2%. In 2 patients, ipsilateral vertebral artery lesions were stented concomitantly. One patient had a minor stroke after the procedure but recovered fully in 2 days. No other complications were encountered. Nine (64%) patients had 6-month follow-up imaging (angiography or duplex scanning) that showed no evidence of restenoses (obstruction ≥50%). At 18 ± 2 months, 3 (21%) patients had died from unrelated causes. No neurological events occurred, and no repeat carotid artery interventions were required in the remaining patients. Conclusions: Carotid stenting is an effective treatment option for severe radiation-induced carotid artery occlusive disease.

APA, Harvard, Vancouver, ISO, and other styles

50

Ismail, Mustafa, Teeba A. Al-Ageely, Mohamed Almustafa A. Alzerkani, Younus M. Al-Khazaali, Haneen A. Salih, Aktham O. Al-Khafaji, Zahraa M. Kareem, Alkawthar M. Abdulsada, Hayder R. Salih, and Samer S. Hoz. "Extracranial carotid localized fibromuscular dysplasia: A case report and literature review." Surgical Neurology International 13 (October 28, 2022): 498. http://dx.doi.org/10.25259/sni_937_2022.

Full text

Abstract:

Background: Fibromuscular dysplasia (FMD) is a noninflammatory and nonatherosclerotic arteriopathy that is characterized by irregular cellular proliferation and deformed construction of the arterial wall that causes segmentation, constriction, or aneurysm in the intermediate-sized arteries. The incidence of FMD is 0.42–3.4%, and the unilateral occurrence is even rarer. Herein, we report a rare case of a localized extracranial carotid unilateral FMD associated with recurrent transient ischemic attacks (TIAs) treated by extracranial-intracranial bypass for indirect revascularization. The specific localization of the disease rendered our case unique. Methods: We conducted a review of the PubMed Medline database search using the following combined formula: ((FMD [Title/Abstract]) AND ((isolated [Title/Abstract]) OR (localized [Title/Abstract]))) AND Internal carotid artery (ICA) (Title/Abstract). Additional resources were included by screening the reference list of the selected papers. Results: A total of six cases were found, and all accounted for localized FMD affecting the ICA. The age range was between 19 and 52, the male-to-female ratio was (2:4), and all of the cases consisted of unilateral carotid FMD, mainly on the left side with a left-to-right ratio of 5:1. The management and outcome of these cases varied according to the case and associated complications. Conclusion: Extracranial localized FMD of the ICA is a rare subtype of FMD that has little documentation in the literature. In our case, it was a localized extracranial carotid unilateral FMD associated with recurrent TIAs. The appropriate treatment was using the intracranial-extracranial bypass.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Extracranial carotid arterie'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles