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Objectives
Assessment of pattern of arterial involvement in carcinoma gall bladder with MDCT Angiography.
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Background
Gallbladder cancer is the most common malignancy of the biliary tract, representing 80%–95% of biliary tract cancers worldwide, according to autopsy studies. It ranks sixth among gastrointestinal cancers . MDCT has a reported accuracy of up to 84% in determining local extent or the T stage of primary gallbladder carcinoma and 85% in predicting resectability through its ability to delineate hepatic and vascular invasion, lymphadenopathy, and distant metastases. With it's increasing use and...
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Imaging findings OR Procedure findings
All CT examinations were performed on a 64- MDCT scanner (Philips Medical System Version 6.4, Extended Brilliance Workspace ).Triphasic Angiography was performed after the IV administration of nonionic contrast material {Iodixanol(visipaque)};volumes varied between 100 and 150 mL at 1.5 ml/Kg.After injection of intravenous contrast material, liver was scanned in arterial (scanning delay, 20-30 seconds), portal (scanning delay, 60-70 seconds), and equilibrium (scanning delay, at 3 minutes) phases
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Conclusion
Half of the cases (43.5%) of carcinoma gall bladder showed arterial involvement at the time of diagnosis; most commonly involved artery was found to be cholecystic artery followed by right hepatic artery and replaced right hepatic artery.