منابع مشابه
Hepatic Pseudolesion in SVC obstruction - 99mTechnetium Sulfur Colloid Scan Equivalent of Quadrate Lobe Hot Spot Sign on Computerized Tomography
An area of increased activity in segment IV of liver (quadrate lobe) on 99mTc-sulfur colloid (TSC) scans has been well documented in patients with superior vena cava obstruction. Similarly intense enhancement of the quadrate lobe in the arterial phase may be seen on computed tomography in patients of superior vena cava syndrome. We present this imaging finding in a case of malignant thymoma cau...
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PURPOSE The computed tomogram angiography (CTA) 'spot sign' describes foci of intralesional enhancement associated with hematoma expansion in primary intracerebral hemorrhage patients. A consistent radiological definition is required for two proposed recombinant Factor VIIa trials planning patient dichotomization according to 'spot sign' presence or absence. We propose radiological criteria for...
متن کاملDynamic Characterization of the CT Angiographic ‘Spot Sign’
BACKGROUND AND PURPOSE Standard (static) CT angiography is used to identify the intracerebral hemorrhage (ICH) spot sign. We used dynamic CT-angiography to describe spot sign characteristics and measurement parameters over 60-seconds of image acquisition. METHODS We prospectively identified consecutive patients presenting with acute ICH within 4.5 hours of symptom onset, and collected whole b...
متن کاملSpace-eecient Hot Spot Estimation Space-eecient Hot Spot Estimation
This paper is concerned with the problem of identifying names which occur frequently in an ordered list of names. Such names are called hot spots. Hot spots can be identiied easily by counting the occurrences of each name and then selecting those with large counts. However, this simple solution requires space proportional to the number of names that occur in the list. In this paper, we present ...
متن کاملCT perfusion spot sign improves sensitivity for prediction of outcome compared with CTA and postcontrast CT.
BACKGROUND AND PURPOSE Recent studies have recommended both early and late imaging to increase spot sign detection. However optimal acquisition timing for spot detection and impact on outcome prediction is uncertain. Our aim was to assess the utility of CTP in spot sign detection and characterization with emphasis on its impact on the prediction of outcome in patients with acute primary ICH. ...
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ژورنال
عنوان ژورنال: Middle East Journal of Digestive Diseases
سال: 2018
ISSN: 2008-5249
DOI: 10.15171/mejdd.2018.110