Добірка наукової літератури з теми "Cerebral transit time"
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Статті в журналах з теми "Cerebral transit time"
Liebetrau, Martin, Jürgen Herzog, Christian U. A. Kloss, Gerhard F. Hamann, and Martin Dichgans. "Prolonged Cerebral Transit Time in CADASIL." Stroke 33, no. 2 (February 2002): 509–12. http://dx.doi.org/10.1161/hs0202.102949.
Повний текст джерелаKamano, Hironori, Takashi Yoshiura, Akio Hiwatashi, Koichiro Abe, Osamu Togao, Koji Yamashita, and Hiroshi Honda. "Arterial spin labeling in patients with chronic cerebral artery steno-occlusive disease: Correlation with 15O-PET." Acta Radiologica 54, no. 1 (February 2013): 99–106. http://dx.doi.org/10.1258/ar.2012.120450.
Повний текст джерелаEngedal, Thorbjørn S., Niels Hjort, Kristina D. Hougaard, Claus Z. Simonsen, Grethe Andersen, Irene Klærke Mikkelsen, Jens K. Boldsen, et al. "Transit time homogenization in ischemic stroke – A novel biomarker of penumbral microvascular failure?" Journal of Cerebral Blood Flow & Metabolism 38, no. 11 (July 31, 2017): 2006–20. http://dx.doi.org/10.1177/0271678x17721666.
Повний текст джерелаArsava, Ethem M., Mikkel B. Hansen, Berkan Kaplan, Ahmet Peker, Rahsan Gocmen, Anil Arat, Kader K. Oguz, Mehmet A. Topcuoglu, Leif Østergaard, and Turgay Dalkara. "The effect of carotid artery stenting on capillary transit time heterogeneity in patients with carotid artery stenosis." European Stroke Journal 3, no. 3 (April 26, 2018): 263–71. http://dx.doi.org/10.1177/2396987318772686.
Повний текст джерелаLo, E. H., J. Rogowska, P. Bogorodzki, M. Trocha, K. Matsumoto, B. Saffran, and G. L. Wolf. "Temporal Correlation Analysis of Penumbral Dynamics in Focal Cerebral Ischemia." Journal of Cerebral Blood Flow & Metabolism 16, no. 1 (January 1996): 60–68. http://dx.doi.org/10.1097/00004647-199601000-00007.
Повний текст джерелаBush, Adam M., Roberta Miyeko Kato, Thomas D. Coates, and John C. Wood. "Cerebral Tissue Transit Time in Patients with Sickle Cell Anemia." Blood 126, no. 23 (December 3, 2015): 280. http://dx.doi.org/10.1182/blood.v126.23.280.280.
Повний текст джерелаKoch, Klaus Ulrik, Anna Tietze, Joel Aanerud, Gorm von Öettingen, Niels Juul, Jens Christian Hedemann Sørensen, Lone Nikolajsen, Leif Østergaard, and Mads Rasmussen. "Effect of ephedrine and phenylephrine on brain oxygenation and microcirculation in anaesthetised patients with cerebral tumours: study protocol for a randomised controlled trial." BMJ Open 7, no. 11 (November 2017): e018560. http://dx.doi.org/10.1136/bmjopen-2017-018560.
Повний текст джерелаAlsop, D. C., and J. A. Detre. "Reduced Transit-Time Sensitivity in Noninvasive Magnetic Resonance Imaging of Human Cerebral Blood Flow." Journal of Cerebral Blood Flow & Metabolism 16, no. 6 (November 1996): 1236–49. http://dx.doi.org/10.1097/00004647-199611000-00019.
Повний текст джерелаKamp, Marcel A., Philipp Slotty, Bernd Turowski, Nima Etminan, Hans-Jakob Steiger, Daniel Hänggi, and Walter Stummer. "Microscope-Integrated Quantitative Analysis of Intraoperative Indocyanine Green Fluorescence Angiography for Blood Flow Assessment: First Experience in 30 Patients." Operative Neurosurgery 70, suppl_1 (August 1, 2011): ons65—ons74. http://dx.doi.org/10.1227/neu.0b013e31822f7d7c.
Повний текст джерелаElting, Jan Willem J., Jeanette Tas, Marcel JH Aries, Marek Czosnyka, and Natasha M. Maurits. "Dynamic cerebral autoregulation estimates derived from near infrared spectroscopy and transcranial Doppler are similar after correction for transit time and blood flow and blood volume oscillations." Journal of Cerebral Blood Flow & Metabolism 40, no. 1 (October 24, 2018): 135–49. http://dx.doi.org/10.1177/0271678x18806107.
Повний текст джерелаДисертації з теми "Cerebral transit time"
Naylor, A. Ross. "Evaluation and clinical application of a new method of quantifying mean cerebral transit time." Thesis, University of Aberdeen, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240668.
Повний текст джерелаSchmid, Benedikt [Verfasser], and Wolfgang [Akademischer Betreuer] Müllges. "Relation between cerebral arterio-venous transit time and neuropsychological performance in patients with vascular dementia / Benedikt Schmid. Betreuer: Wolfgang Müllges." Würzburg : Universität Würzburg, 2013. http://d-nb.info/1102820040/34.
Повний текст джерелаGrieser, Christian. "Erkennung zerebraler Ischämie mittels computertomographischer Perfusionskartographie und CT-Angiographie." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2006. http://dx.doi.org/10.18452/15429.
Повний текст джерелаPurpose Stroke is the third – leading cause of death in developed countries, following cardiovascular disease and cancer. There is a need for an easily and rapidly performed technique to detect cerebral ischemia in the first hours after its occurrence. The purpose of this study was the introduction and validation of a Stroke protocol which includes an unenhanced CT scan, a CT Perfusion and a CT Angiography. Furthermore, the purpose of this study was to determine if there is a difference between Perfusion parameters in gray and white matter, which are necessary to know while performing perfusion maps. Data and Methodology A total of 101 patients (age range 14 – 94, average age 69 years) were examined using multiple row CT (8 / 16 row multiple detector, light ultra speed or light speed 16, GE medical systems) for diagnosing cerebral ischemia. First a series of native images was acquired. During the examination of cerebral perfusion a 2 cm wide slab was recorded for 60 sec with 20 intermittent scans following injection of 40 ml of contrast medium with an iodine content of 370 mg / ml. By defining Regions of Interests (ROIs) regional cerebral blood flow (CBF), regional cerebral blood volume (CBV) and mean transit time (MTT) were calculated. Results Physiological regional cerebral blood flow and cerebral blood volume in gray matter were higher than in white matter. In total 66 patients with a cerebral ischemia were found. The unenhanced CT detected 22 patients with cerebral ischemia, which were confirmed by CT Perfusion in all cases. These ischemic areas revealed reduced regional CBF and extended MTT. Furthermore an ischemia correlative was discovered by perfusion analysis for 44 patients (out of 101 investigated) where the extent of the cerebral ischemia had not been visible by unenhanced CT. For 38 out of 44 patients with cerebral ischemia we were able to perform a CTA. For 35 out of these 38 patients, we found a sizable correlation between perfusion maps and CTA. Conclusion There are physiological differences for CT Perfusion parameters between gray and white matter, which are necessary to know for the interpretation of perfusion maps. However, this examination was able to show that unenhanced CT is not always capable of showing early CT signs. With the help of CT perfusion it is possible to detect the extent of acute cerebral ischemia. Furthermore, CT Angiography shows a sizable correlation compared to CT Perfusion. In conjunction, these methods give important Information for the early diagnosis and the therapeutic strategy of ischemic brain injury.
Schmid, Benedikt. "Relation between cerebral arterio-venous transit time and neuropsychological performance in patients with vascular dementia." Doctoral thesis, 2012. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-71234.
Повний текст джерелаDemenzen und alle anderen Formen kongnitiver Leistungseinschränkungen gehören heute zu den bedeutendsten medizinischen Herausforderungen und werden in der Zukunft noch weiter an Bedeutung gewinnen. Die häufigste der Demenzerkrankungen bei älteren Patienten ist die Alzheimer-Krankheit, gefolgt von den vaskulären Demenzen. Da die Diagnosekriterien in vielen Fällen noch unpräzise sind und vor allem frühe Stadien der Erkrankung nicht erfassen, wurden in der neueren Literatur detailliertere Untergruppen der neu eingeführten Entität „vaskuläre kognitive Funktionsstörung“ (vascular cognitive impairment, VCI) etabliert. Subkortikale Veränderungen an den kleinsten Gefäßen stellen unter allen Pathologien, die unter diesem Begriff subsumiert sind, die häufigste Ursache für kognitive Leistungseinschränkungen dar. Die Diagnose Demenz bzw. VCI wird oft erst in späten Stadien der Krankheit gestellt, wenn die therapeutischen Mittel bereits stark begrenzt sind. Deshalb wäre eine Möglichkeit zur frühen Entdeckung subkortikaler Gefäßveränderungen wünschenswert in einem Stadium der Krankheit, in dem es noch möglich ist, Risikofaktoren wie Diabetes mellitus, arterielle Hyper- und Hypotonie und Fettstoffwechselstörungen auszumachen und konseqeuent zu behandeln. Das Ziel dieser Studie war es zu untersuchen, ob cTT mit dem Ausmaß kognitiver Dysfunktion korreliert, ob also cTT als frühes diagnostisches Verfahren für vaskuläre demenzielle Prozesse geeignet ist. Die Studienpopulation umfasste 38 Patienten aus der Klinik und Poliklinik für Neurologie der Universität Würzburg. Ein Ergebnis dieser Studie ist, dass die cTT sicherlich in der Lage ist, einfach und zuverlässig mögliche mikrovaskuläre Schädigungen des Gehirns auch im Hinblick auf ihre tatsächliche klinische Relevanz zu entdecken. Im Vergleich mit anderen Diagnoseverfahren (Testpsychologie und MRT) sind die Vorteile der cTT offensichtlich: die Messung ist ein kostengünstiges und schnelles Verfahren, das sowohl Patienten als auch Untersuchern eine langwierige neuropsychologische Untersuchung erspart. Die Messung der cTT ist ein sicheres Verfahren, da die wenigen aus der Anwendung des Kontrastmittels sich ergebenden Risiken selten und gegebenenfalls leicht behandelbar sind. Zudem erwies sich die cTT als präziser bei der Aufgabe, das Ausmaß kognitiver Dysfunktion zu messen, als es die MRT vermochte. Zuletzt ist die cTT auch flächendeckend verfügbar. Die einzige Voraussetzung ist ein Duplex-fähiges Ultraschallgerät. Kostenintesive Untersuchungen wie die MRT können vermieden werden. Wenn auch die Testpsychologie der Goldstandard bleiben wird, erwies sich die cTT als zuverlässige Alternative die im Vergleich zur MRT sowohl Zeit als auch Kosten spart
Chen, Yi-Ju, and 陳薏茹. "Evaluation of different Postprocessing Methods for Determination of Cerebral Blood Flow and Mean Transit Time by MR Perfusion Imaging." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/47895569854908277715.
Повний текст джерела國立陽明大學
生物醫學影像暨放射科學系暨研究所
98
Dynamic susceptibility contrast magnetic resonance imaging is a technique for measuring cerebral blood perfusion. Quantitative calculations on the hemodynamic parameters such as cerebral blood volume ( CBV ) 、 cerebral blood flow ( CBF ) 、and mean transit time ( MTT ) are used for the diagnosis of cerebral vascular diseases, such as stenosis and acute ischemic stroke. Computer simulation was used to evaluate the effect of tracer delay on the quantification of CBF and MTT using different calculation techniques, including : Maximum slope、Maximum concentration、Fourier transform、standard singular value decomposition ( sSVD ), and circular singular value decomposition ( cSVD ). Scatter plots were used to evaluate parameters calculated for different tissues using these algorithms from clinical images in patients with stenosis. The four tissue types determined from the independent component analysis segmentation were artery on the normal and stenosis sides, and brain parenchyma on the normal and stenosis sides. Our simulation results indicate that:1) CBF were underestimated for short MTTs in all calculation techniques;2) sSVD is sensitive to tracer time delay;3) MTT_sSVD may provide high contrast for clinical diagnosis;4) CBF and MTT calculated by Maximum slope and Maximum concentration algorithms are similar to cSVD. The Maximum concentration algorithm is not only less sensitive to noise, but also easy to calculate without any complicated calculation. Scatter plot analysis of clinical images indicate that:1) the CBF_sSVD values for artery and brain parenchyma at the normal side were higher than CBF_cSVD values; 2) the MTT _sSVD values for artery and brain parenchyma at the abnormal side were longer than MTT _cSVD values; 3) MTT _sSVD may provide high contrast for clinical images in patients with stenosis.
Chaudhary, Simone. "Characterization of the Hemodynamic Profile of Early Alzheimer's Disease via Arterial Spin Labeling Magnetic Resonance Imaging." Thesis, 2012. http://hdl.handle.net/1807/32232.
Повний текст джерелаКниги з теми "Cerebral transit time"
Haunton, Victoria, Aung Sett, Amit Mistri, and Martin Fotherby. Stroke. Edited by Patrick Davey and David Sprigings. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199568741.003.0227.
Повний текст джерелаЧастини книг з теми "Cerebral transit time"
Minns, R. A., and M. V. Merrick. "Cerebral Perfusion Pressure and Nett Cerebral Mean Transit Time in Childhood Hydrocephalus." In Annual Review of Hydrocephalus, 25–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-11158-1_15.
Повний текст джерелаLaManna, J. C., and R. P. Shockley. "Determination of Cerebral Cortical Capillary Blood Volume from Mean Transit Time Analysis." In Oxygen Transport to Tissue IX, 29–34. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4684-7433-6_4.
Повний текст джерелаSzarmach, Arkadiusz, Marta A. Małkiewicz, Agata Zdun-Ryżewska, Grzegorz Halena, Marek Radkowski, Jarosław Dzierżanowski, Kamil Chwojnicki, et al. "Relative Cerebral Blood Transit Time Decline and Neurological Improvement in Patients After Internal Carotid Artery Stenting." In Advances in Experimental Medicine and Biology, 71–80. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/5584_2019_378.
Повний текст джерелаFerrari, Marco, David A. Wilson, Daniel F. Hanley, and Richard J. Traystman. "Near Infrared Determined Cerebral Transit Time and Oxy- and Deoxyhemoglobin Relationships During Hemorrhagic Hypotension in the Dog." In Oxygen Transport to Tissue XI, 55–62. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5643-1_7.
Повний текст джерелаWolf, M., H. U. Bucher, M. Keel, K. von Siebenthal, and G. Duc. "Estimation of Cerebral Blood Volume and Transit Time in Neonates From Quick Oxygen Increases Measured by Near-Infrared Spectrophotometry." In Advances in Experimental Medicine and Biology, 93–99. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0333-6_11.
Повний текст джерелаMies, Günter, and Behrouz Momeni. "Preconditioning of Gerbil Brain Reduces Hippocampal Depolarization Time Following Transient Forebrain Ischemia: Relationship to Hippocampal CA1 Neuron Injury." In Maturation Phenomenon in Cerebral Ischemia V, 265–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18713-1_26.
Повний текст джерелаKuroiwa, T., I. Yamada, Y. Hakamata, K. Ohno, S. Endo, I. Nakano, and U. Ito. "Time Course of Postischemic Stroke Symptoms and Delayed Infarction After Transient Cerebral Ischemia in Gerbils: Effect of Chemical Preconditioning Using 3-Nitropropionic Acid." In Maturation Phenomenon in Cerebral Ischemia IV, 141–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-59446-5_17.
Повний текст джерелаBertoldo, Alessandra, Francesca Zanderigo, and Claudio Cobelli. "Assessment of Cerebral Blood Flow, Volume, and Mean Transit Time from Bolus-Tracking MRI Images." In Signal Processing and Communications, 587–604. CRC Press, 2005. http://dx.doi.org/10.1201/9781420028669.ch19.
Повний текст джерелаLarner, A. J. "Syncope." In Oxford Textbook of Medicine, 4838–41. Oxford University Press, 2010. http://dx.doi.org/10.1093/med/9780199204854.003.240504_update_001.
Повний текст джерелаDuvall, Jaclyn R., and Jerry W. Swanson. "A Man With Recurrent Headache and Focal Neurologic Deficits." In Mayo Clinic Cases in Neuroimmunology, edited by Andrew McKeon, B. Mark Keegan, and W. Oliver Tobin, 222–24. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780197583425.003.0072.
Повний текст джерелаТези доповідей конференцій з теми "Cerebral transit time"
Sadasivan, Chander, Liliana Cesar, and Baruch B. Lieber. "Mixing of Angiographic Contrast With Blood During Injections in the Cerebral Circulation." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-192336.
Повний текст джерелаLee, Gija, Seokkeun Choi, Sungwook Kang, Samjin Choi, Jeonghoon Park, Dong Hyun Park, Youngho Park, Kyungsook Kim, Bermseok Oh, and Hunkuk Park. "Changes in Extracellular Glutamate Release on Repetitive Transient Occlusion in Global Ischemia Model." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206602.
Повний текст джерелаStrano, A., G. Davi, I. Catalano, G. Francavilla, and A. Notarbartolo. "IS BETATHROMBOGLOBULIN (BTG) OF PROGNOSTIC VALUE IN PATIENTS WITH TRANSIENT CEREBRAL ISCHEMIA (TIA) ?" In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643055.
Повний текст джерелаLieber, B. B., A. K. Wakhloo, A. Divani, and S. Rudin. "Determination of Vascular Geometry and Flow Velocity in Cerebral Arteriovenous Malformations (AVMs) Using Double Contrast and High-Speed Digital Subtraction Angiography." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0027.
Повний текст джерелаProkopenko, T. A., N. I. Nechipurenko, A. N. Batyan, and I. D. Pashkovskaya. "APPLICATION OF LOW-INTENSITY LASER THERAPY IN CEREBROVASCULAR DISEASES." In SAKHAROV READINGS 2021: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute, 2021. http://dx.doi.org/10.46646/sakh-2021-1-320-321.
Повний текст джерелаProkopenko, T. A., N. I. Nechipurenko, A. N. Batyan, and I. D. Pashkovskaya. "APPLICATION OF LOW-INTENSITY LASER THERAPY IN CEREBROVASCULAR DISEASES." In SAKHAROV READINGS 2021: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute, 2021. http://dx.doi.org/10.46646/sakh-2021-1-320-321.
Повний текст джерелаLey, Obdulia, and Yildiz Bayazitoglu. "Temperature Distribution in a Realistic Human Head During Selective and Whole Body Cooling and During Circulatory Arrest." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61101.
Повний текст джерелаMontecchio, G. P., P. Custodi, S. Carbone, C. Bendotti, and F. Piovella. "TICLOPIDINE AND INDOBUFEN: EFFECTS ON HAEMOSTATIC FUNCTIONS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643418.
Повний текст джерелаWatanuki, Keiichi, Kenta Hirayama, and Kazunori Kaede. "Brain Activation Analysis of Voluntary Movement and Passive Movement Using Near-Infrared Spectroscopy." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-71273.
Повний текст джерелаZhu, Liang, and Chenguang Diao. "Computer-Aided Analysis of Transient and Steady State Temperature Distribution in Human Brain During Selective Cooling of Head Surface and Rewarming for Head Injury Patients." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33686.
Повний текст джерела