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Статті в журналах з теми "CT-sign"

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Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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1

Maldonado, Roberto L. "The CT Angiogram Sign." Radiology 210, no. 2 (February 1999): 323–24. http://dx.doi.org/10.1148/radiology.210.2.r99fe14323.

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2

Rexroad, Jason T. "The CT Arrowhead Sign." Radiology 227, no. 1 (April 2003): 44–45. http://dx.doi.org/10.1148/radiol.2271020086.

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3

Pinto, Pedro S. "The CT Halo Sign." Radiology 230, no. 1 (January 2004): 109–10. http://dx.doi.org/10.1148/radiol.2301020649.

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4

Bugnicourt, Jean-Marc, Pauline Monet-Desblache, Hervé Deramond, and Olivier Godefroy. "The “carotid CT crescent” sign." Clinical Neurology and Neurosurgery 114, no. 6 (July 2012): 803–5. http://dx.doi.org/10.1016/j.clineuro.2011.12.047.

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5

Han, Jason, Hao Xiang, William E. Ridley, and Lloyd J. Ridley. "Atoll sign: High resolution CT." Journal of Medical Imaging and Radiation Oncology 62 (October 2018): 17. http://dx.doi.org/10.1111/1754-9485.05_12785.

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6

Tack, D., P. Defrance, C. Delcour, and P. A. Gevenois. "The CT fallen-lung sign." European Radiology 10, no. 5 (April 26, 2000): 719–21. http://dx.doi.org/10.1007/s003300050992.

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7

Fairbairn, K. J., M. E. Mulligan, M. D. Murphey, and C. S. Resnik. "CT bubble sign: A sign of recent hip dislocation." Clinical Radiology 49, no. 10 (October 1994): 752. http://dx.doi.org/10.1016/s0009-9260(05)82761-8.

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8

Jung, Sung Il, Hee Sun Park, Hae Jeong Jeon, Mi Hye Yu, Young Jun Kim, Jieun Chung, and Kyungah Jeong. "Whirlpool sign of adnexal torsion on CT: where can we find it?" Acta Radiologica 61, no. 5 (September 30, 2019): 714–20. http://dx.doi.org/10.1177/0284185119877336.

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Background Whirlpool sign on computed tomography (CT) is pathognomic of adnexal torsion. Purpose To evaluate the visibility and common location of the whirlpool sign in adnexal torsion on CT. Material and Methods This retrospective study included 143 consecutive patients who underwent preoperative CT imaging and subsequent surgically confirmed as adnexal torsion. Two readers independently recorded the presence and location of whirlpool sign in adnexal torsion on CT. Patients with and without whirlpool sign were compared with regard to the size of the adnexal mass and the degree of torsion. Results Whirlpool sign was detected in 60 (42.0%) patients on the transverse CT plane and 79 (55.2%) patients on the coronal CT plane of 143 patients. The sign was significantly better detected on the coronal CT plane than on the transverse CT plane ( P = 0.03). The most common location of the sign included the posterolateral aspect of the adnexal mass on the transverse CT plane (25/60, 41.7%, P = 0.04) and the upper-lateral aspect of the adnexal mass on the coronal CT plane (45/79, 60.0%, P < 0.001). The size of the adnexal mass with whirlpool sign was significantly larger than the mass without whirlpool sign on the transverse CT plane (median 9.6 vs. 8.6 cm, P = 0.03). No significant difference in the degree of torsion was found between patients with and without whirlpool sign on CT ( P = 0.56–0.62). Conclusion Whirlpool sign of adnexal torsion is well detected at the upper-lateral aspect of adnexal mass on the coronal CT plane.

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9

Lal, Hira, Priyank Yadav, Anand Chellappan, and Rajeev Singh. "Tennis ball sign: a CT sign of acute aortic dissection." Abdominal Radiology 42, no. 6 (February 10, 2017): 1811–12. http://dx.doi.org/10.1007/s00261-017-1067-x.

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10

Vargas, M. I., and K. Lovblad. "Dual-Energy CT and Spot Sign." American Journal of Neuroradiology 37, no. 10 (July 21, 2016): E63. http://dx.doi.org/10.3174/ajnr.a4894.

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11

Fleres, Francesco, Francesca Viscosi, Elisa Bertilone, Carmelo Mazzeo, and Eugenio Cucinotta. "The whirlpool sign in CT scan." ASVIDE 5 (July 2018): 633. http://dx.doi.org/10.21037/asvide.2018.633.

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12

Magu, S., KN Ratan, and K. Agrawal. "Images: CT whirl sign - midgut volvulus." Indian Journal of Radiology and Imaging 16, no. 1 (2006): 83. http://dx.doi.org/10.4103/0971-3026.29055.

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13

Ernst, Armin, and Devanand Anantham. "Bronchus Sign on CT Scan Rediscovered." Chest 138, no. 6 (December 2010): 1290–92. http://dx.doi.org/10.1378/chest.10-0892.

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14

KHANDELWAL, N., N. MALIK, A. PATHAK, V. K. KAK, and S. SURI. "Head injury: pseudodelta sign on CT." Australasian Radiology 36, no. 4 (November 1992): 303–4. http://dx.doi.org/10.1111/j.1440-1673.1992.tb03204.x.

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15

Gaeta, Michele, Santi Volta, Salvatore Stroscio, Placido Romeo, and Ignazio Pandolfo. "CT “Halo Sign” in Pulmonary Tuberculoma." Journal of Computer Assisted Tomography 16, no. 5 (September 1992): 827–28. http://dx.doi.org/10.1097/00004728-199209000-00029.

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16

Sureka, Binit, Aditi Sullere, and Pushpinder Singh Khera. "CT Quadrate Lobe Hot Spot Sign." Middle East Journal of Digestive Diseases 10, no. 3 (June 28, 2018): 192–93. http://dx.doi.org/10.15171/mejdd.2018.110.

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17

Ray, Animesh, Ankit Mittal, and Surabhi Vyas. "CT Halo sign: A systematic review." European Journal of Radiology 124 (March 2020): 108843. http://dx.doi.org/10.1016/j.ejrad.2020.108843.

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18

Bastianello, S., A. Pierallini, C. Colonnese, G. Brughitta, U. Angeloni, M. Antonelli, L. M. Fantozzi, C. Fieschi, and L. Bozzao. "Hyperdense middle cerebral artery CT sign." Neuroradiology 33, no. 3 (1991): 207–11. http://dx.doi.org/10.1007/bf00588219.

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19

Yaniv, Gal, Noga Shabshin, Michal Sharon, Boaz Liberman, Alex Garniack, Uri Rimon, and Iris Eshed. "Osteoid osteoma—the CT vessel sign." Skeletal Radiology 40, no. 10 (April 13, 2011): 1311–14. http://dx.doi.org/10.1007/s00256-011-1150-2.

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20

Frank, Adam J., Lori B. Goffner, Arthur A. Fruauff, and Richard A. Losada. "Cecal volvulus: The CT whirl sign." Abdominal Radiology 18, no. 3 (June 1993): 288–89. http://dx.doi.org/10.1007/bf00198126.

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21

Singh, J., R. Kumar, and A. Kalyanpur. ""Small bowel feces sign" - a ct sign in small bowel obstruction." Indian Journal of Radiology and Imaging 16, no. 1 (2006): 71. http://dx.doi.org/10.4103/0971-3026.29053.

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22

Li, Qi, Wen-Song Yang, Sheng-Li Chen, Fu-Rong Lv, Fa-Jin Lv, Xi Hu, Dan Zhu, et al. "Black Hole Sign Predicts Poor Outcome in Patients with Intracerebral Hemorrhage." Cerebrovascular Diseases 45, no. 1-2 (2018): 48–53. http://dx.doi.org/10.1159/000486163.

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Background: In spontaneous intracerebral hemorrhage (ICH), black hole sign has been proposed as a promising imaging marker that predicts hematoma expansion in patients with ICH. The aim of our study was to investigate whether admission CT black hole sign predicts hematoma growth in patients with ICH. Methods: From July 2011 till February 2016, patients with spontaneous ICH who underwent baseline CT scan within 6 h of symptoms onset and follow-up CT scan were recruited into the study. The presence of black hole sign on admission non-enhanced CT was independently assessed by 2 readers. The functional outcome was assessed using the modified Rankin Scale (mRS) at 90 days. Univariate and multivariable logistic regression analyses were performed to assess the association between the presence of the black hole sign and functional outcome. Results: A total of 225 patients (67.6% male, mean age 60.3 years) were included in our study. Black hole sign was identified in 32 of 225 (14.2%) patients on admission CT scan. The multivariate logistic regression analysis demonstrated that age, intraventricular hemorrhage, baseline ICH volume, admission Glasgow Coma Scale score, and presence of black hole sign on baseline CT independently predict poor functional outcome at 90 days. There are significantly more patients with a poor functional outcome (defined as mRS ≥4) among patients with black hole sign than those without (84.4 vs. 32.1%, p < 0.001; OR 8.19, p = 0.001). Conclusions: The CT black hole sign independently predicts poor outcome in patients with ICH. Early identification of black hole sign is useful in prognostic stratification and may serve as a potential therapeutic target for anti-expansion clinical trials.

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23

Zhang, Ting Ting, Timothy J. Sadler, Siobhan Whitley, Rebecca Brais, and Edmund Godfrey. "The CT fish mouth ampulla sign: a highly specific finding in main duct and mixed intraductal papillary mucinous neoplasms." British Journal of Radiology 92, no. 1103 (November 2019): 20190461. http://dx.doi.org/10.1259/bjr.20190461.

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Objective: Main duct and mixed intraductal papillary mucinous neoplasms (IPMN) are pre-malignant cystic pancreatic neoplasms associated with pancreatic duct dilatation. Distinguishing these from benign causes of pancreatic duct dilatation is important in order to allow appropriate surveillance or surgery. A patulous duodenal papilla with extrusion of mucus at endoscopic evaluation, the endoscopic fish mouth ampulla (E-FMA) sign, is reported in main duct and mixed IPMN. We aimed to establish whether a CT correlate (CT-FMA) of this sign exists and whether this was associated with the presence of invasion or high-grade dysplasia. We defined the CT-FMA sign as an uninterrupted column of water attenuation material running from the pancreatic duct to the duodenal lumen. Methods: A retrospective, blinded review of 44 patients with histologically confirmed IPMN and 87 age-matched controls with pancreatic duct dilatation on CT was undertaken. A case–control series matched for the degree of pancreatic duct dilatation was used to compare the rates of invasion or high-grade dysplasia between main duct and mixed IPMN patients, with and without a CT-FMA sign. Results: The CT-FMA sign could be identified in 18.5% patients with main duct/mixed IPMN with specificity 100%, positive predictive value 100% and negative predictive value 79.8%. A significant association was found between CT-FMA in main duct/mixed IPMN compared to controls, but not with the presence of high-grade dysplasia or invasion. Conclusions: The CT-FMA sign is a newly reported, highly specific sign of MD and mixed IPMN. Advances in knowledge: If a fish mouth ampulla is identified at CT, a diagnosis of main duct or mixed IPMN is highly likely.

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24

Abu-Hmeidan, Jareer H., Hayan A. Bismar, and Abdullgabbar M. Hamid. "Small bowel feces sign in association with occlusive mesenteric ischemia." Acta Radiologica Short Reports 3, no. 7 (August 1, 2014): 204798161454014. http://dx.doi.org/10.1177/2047981614540142.

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Small bowel feces sign (SBFS) is a computed tomography (CT) finding that appears as fecal like material in dilated small bowel loops. This sign is usually seen in association with gradually progressive small bowel obstruction. We present a case of occlusive mesenteric ischemia in which the SBFS appeared on CT scan early on in the course of the disease. We put forward a suggested alternative mechanism to the appearance of this sign in association with mesenteric ischemia. The SBFS might have the potential to serve as an early sign of mesenteric ischemia on CT scan.

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25

Huh, J. D., Y. W. Park, S. S. Kim, H. J. Kim, Y. D. Joh, and B. H. Chun. "Reevaluation of psoas sign analyzed by CT." Journal of the Korean Radiological Society 22, no. 6 (1986): 991. http://dx.doi.org/10.3348/jkrs.1986.22.6.991.

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26

Schuster, M. R., and K. A. Scanlan. ""CT angiogram sign": establishing the differential diagnosis." Radiology 181, no. 3 (December 1991): 903. http://dx.doi.org/10.1148/radiology.181.3.1947119.

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27

Primack, S. L., T. E. Hartman, K. S. Lee, and N. L. Müller. "Pulmonary nodules and the CT halo sign." Radiology 190, no. 2 (February 1994): 513–15. http://dx.doi.org/10.1148/radiology.190.2.8284408.

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28

Virmani, Vivek, Anupam Lai, Chirag K. Ahuja, and Niranjan Khandelwal. "The CT Quadrate lobe hot spot sign." Annals of Hepatology 9, no. 3 (July 2010): 296–98. http://dx.doi.org/10.1016/s1665-2681(19)31641-2.

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29

Mattick, Anthony, and Peter Goodwin. "Mount Fuji Sign on CT Following Trauma." Journal of Trauma: Injury, Infection, and Critical Care 59, no. 1 (July 2005): 254. http://dx.doi.org/10.1097/01.ta.0000174369.41183.9e.

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30

Tomiyama, N., J. Ikezoe, M. Miyamoto, and K. Nakahara. "CT halo sign in metastasis of osteosarcoma." American Journal of Roentgenology 162, no. 2 (February 1994): 468. http://dx.doi.org/10.2214/ajr.162.2.8310955.

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31

Thomas, Joe, Gopalannair Santhamma Shagos, and Ibrahim Firuz. "Lambda sign in sarcoidosis using PET/CT." Clinical Case Reports 7, no. 1 (November 22, 2018): 236–37. http://dx.doi.org/10.1002/ccr3.1937.

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32

Ibrarullah, Mohammad, and Tapas Mishra. "Abdominal Cocoon: “Cauliflower Sign” on CT Scan." Indian Journal of Surgery 78, no. 3 (April 22, 2016): 243–44. http://dx.doi.org/10.1007/s12262-016-1487-9.

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33

Chouri, Nathalie, Thierry Langin, Sylvie Lantuejoul, Max Coulomb, and Christian Brambilla. "Pulmonary Nodules with the CT Halo Sign." Respiration 69, no. 1 (2002): 103–6. http://dx.doi.org/10.1159/000049381.

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34

Michel, Jean-Luc, Eric Calt, Yann Hetmaniak, Christophe Courthaliac, Agnés Lhoste, Ali Raad, and Denis Caillaud. "A new CT sign of mediastinal lipomatosis?" European Radiology 12, no. 1 (June 29, 2001): 255. http://dx.doi.org/10.1007/s003300100925.

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35

Choi, B. I., K. M. Yeon, S. H. Kim, and M. C. Han. "Caroli disease: central dot sign in CT." Radiology 174, no. 1 (January 1990): 161–63. http://dx.doi.org/10.1148/radiology.174.1.2294544.

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36

Vincent, Janette M., Yin Y. Ng, Andrew J. Norton, and Peter Armstrong. "CT “Angiogram Sign” in Primary Pulmonary Lymphoma." Journal of Computer Assisted Tomography 16, no. 5 (September 1992): 829–31. http://dx.doi.org/10.1097/00004728-199209000-00030.

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37

Shroff, Sheetal, Girish S. Shroff, Shlomit Yust‐Katz, Adriana Olar, Sudhakar Tummala, and Ivo W. Tremont‐Lukats. "The CT halo sign in invasive aspergillosis." Clinical Case Reports 2, no. 3 (April 28, 2014): 113–14. http://dx.doi.org/10.1002/ccr3.67.

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38

Ko, S. F., T. Y. Lee, T. T. Cheng, S. H. Ng, H. M. Lai, Y. F. Cheng, and C. C. Tsai. "CT findings at lupus mesenteric vasculitis." Acta Radiologica 38, no. 1 (January 1997): 115–20. http://dx.doi.org/10.1080/02841859709171253.

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Purpose: To describe the spectrum of early CT findings of lupus mesenteric vasculitis (LMV) and to assess the utility of CT in the management of this uncommon entity. Methods: Abdominal CT was performed within 1–4 days (average 2.2 days) of the onset of severe abdominal pain and tenderness in 15 women with systemic lupus erythematosus. Prompt high-dose i.v. corticosteroid was administered in 11 patients after the CT diagnosis of LMV was made. CT was performed after abdominal symptoms subsided. Results: Eleven cases revealed CT features suggestive of LMV including conspicuous prominence of mesenteric vessels with palisade pattern or comb-like appearance (CT comb sign) supplying focal or diffuse dilated bowel loops (n=11), ascites with slightly increased peritoneal enhancement (n=11), small bowel wall thickening (n=10) with double halo or target sign (n=8). Follow-up CT before high-dose steroid therapy revealed complete or marked resolution of the abnormal CT findings. Conclusion: CT is helpful for confirming the diagnosis of LMV, especially the comb sign which may be an early sign. Bowel ischemia due to LMV is less ominous than previously expected, and the abnormal CT findings were reversible when early diagnosis and prompt i.v. steroid therapy could be achieved.

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39

Harisinghani, M. G., J. Wittenberg, M. A. Blake, S. Chen, K. Jhaveri, and P. R. Mueller. "Halo Sign: Useful CT Sign for Differentiating Benign from Malignant Colonic Disease." Clinical Radiology 58, no. 4 (April 2003): 306–10. http://dx.doi.org/10.1016/s0009-9260(02)00520-2.

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40

Barber, Philip A., Andrew M. Demchuk, Mark E. Hudon, Warwick Pexman, Michael D. Hill, and Alastair M. Buchan. "The hyperdense sylvian fissure MCA ”dot“ sign: a marker of acute CT ischemia." Stroke 32, suppl_1 (January 2001): 346. http://dx.doi.org/10.1161/str.32.suppl_1.346-b.

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P40 Background: The hyperdense appearance of the middle cerebral artery is now a familiar early warning of large cerebral infarction, brain oedema and poor prognosis. Less well described, however, is the hyperdensity associated with embolic occlusion of branches of the middle cerebral artery seen in the sylvian fissure (MCA ”dot“ sign). The aim of this study was to define this sign, and to determine the incidence, its diagnostic value, and reliability. Methods: Computed tomographic (CT) scans performed on patients with acute ischemic stroke within 3 hours of symptom onset were analysed for signs of thromboembolic stroke and evidence of early CT ischemia. Two neuroradiologists and two stroke neurologists initially blinded to all clinical information, and then with knowledge of the affected hemisphere evaluated scans for the presence of a hyperdense MCA sign (HMCA), a hyperdense sylvian fissure MCA ”dot“ sign, and for early MCA territory ischemic changes. Results: Of 100 consecutive patients presenting within 3 hours of symptom onset early CT ischemia was seen in 74 % of the baseline CT scans. The HMCA sign was seen in 5% of CT scans whereas the MCA ”dot“ sign was seen in 16% of which 2 were associated with a HMCA sign. The presence of a HMCA sign was associated with a greater probability of dependence or death than when a MCA ”dot“ sign was observed or no hyperdensity was seen (P<0.05). All 5 patients with a HMCA sign, including 2 with an associated MCA ”dot“ sign were either dead or dependent at 3 months. Patients with a dot sign alone had independent outcomes in 64% of cases (P<0.8). Balanced kappa statistics for both signs were in the moderate to good range when the side of stroke was known. Conclusions: The hyperdense sylvian fissure MCA ”dot“ sign is an early marker of thromboembolic occlusion of the distal MCA and of its branches.

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41

Caillot, Denis, Jean-Francois Couaillier, Alain Bernard, Olivier Casasnovas, David W. Denning, Lionel Mannone, Jose Lopez, et al. "Increasing Volume and Changing Characteristics of Invasive Pulmonary Aspergillosis on Sequential Thoracic Computed Tomography Scans in Patients With Neutropenia." Journal of Clinical Oncology 19, no. 1 (January 1, 2001): 253–59. http://dx.doi.org/10.1200/jco.2001.19.1.253.

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PURPOSE: In patients with neutropenia, thoracic computed tomography (CT) halo and air-crescent signs are recognized as major indicators of invasive pulmonary aspergillosis (IPA). Nevertheless, the exact timing of CT images is not well known.PATIENTS AND METHODS: Seventy-one thoracic CT scans were analyzed in 25 patients with neutropenia with surgically proven IPA.RESULTS: On the first day of IPA diagnosis with early CT scan (d0), a typical CT halo sign was observed in 24 of 25 patients. At that time, the median number of thoracic lesions was two (range, one to six), and pulmonary involvement was bilateral in 12 cases. The halo sign was present in 68%, 22%, and 19% of cases on d3, d7, and d14, respectively. Similarly, the air-crescent sign was seen in 8%, 28%, and 63% of cases on the same days. Otherwise, a nonspecific air-space consolidation aspect was seen in 31%, 50%, and 18% of cases on the same days. The analysis of calculated aspergillary volumes on CT showed that, despite antifungal treatment, the median volume of lesions increased four-fold from d0 to d7, whereas it remained stable from d7 to d14. Overall, 21 patients (84%) were cured by the medical-surgical approach.CONCLUSION: In patients with neutropenia, CT halo sign is a highly effective modality for IPA diagnosis. The duration of the halo sign is short, and it demonstrates the value of early CT. The increase of the aspergillosis size on CT in the first days after IPA diagnosis is not correlated with a pejorative immediate outcome when using a combined medical-surgical approach.

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42

Su, Yifan, Dehui Li, and Huanfang Fan. "Meta-Analysis of the Correlation between TCM Syndromes of Lung Cancer and CT through Data Mining and Computer Software." Journal of Physics: Conference Series 2138, no. 1 (December 1, 2021): 012017. http://dx.doi.org/10.1088/1742-6596/2138/1/012017.

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Abstract To systematically evaluate the correlation between the traditional Chinese medicine (TCM) syndromes of lung cancer and the imaging manifestations of CT. Computer search of CNKI, Cochrane Library, PubMed, Springer, CBM, VIP, Wanfang database, Baidu library and other major databases. Collect the relevant literature on the TCM syndromes of lung cancer and CT imaging manifestation since the database was built until September 1, 2021. Two researchers collected literature and evaluated the quality of the literature, conducted data mining on the literature, and used the computer Revman 5.3 software to conduct a Meta-analysis of the included literature. The results showed that the phlegm dampness type lobular sign was higher than the burr sign, and there was no significant difference between vacuole sign and cavity sign; In Qi-Yin deficiency type, lobular sign was higher than burr sign, vacuole sign was higher than cavity sign; In Qi stagnation blood stasis type, lobular sign is higher than burr sign. The CT lobular sign of lung cancer are mainly phlegm dampness type, Qi-Yin deficiency type and Qi stagnation blood stasis type. Vacuole sign is mainly Qi-Yin deficiency type. Burr sign and cavity sign are less in the above three types. In this study, the combination of computer and meta-analysis technology has promoted the development of lung cancer micro-differentiation theory and assisted in improving the treatment level of lung cancer clinical syndrome differentiation.

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Im, J. G., M. C. Han, C. W. Kim, and Y. S. Shim. "Paper-thinned diaphragm: CT sign of diaphragmatic eventration." Journal of the Korean Radiological Society 26, no. 4 (1990): 743. http://dx.doi.org/10.3348/jkrs.1990.26.4.743.

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