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American Journal of Roentgenology, Vol 164, 97-101, Copyright © 1995 by American Roentgen Ray Society

ARTICLES

Hepatic artery thrombosis after liver transplantation: diagnosis with spiral CT

P Legmann, V Costes, L Tudoret, C Girardot, V Hazebroucq, E Uzan, E Fery- Lemonnier and A Bonnin
Service de Radiologie A, Hopital Cochin, Universite Rene Descartes, Paris, France.

OBJECTIVE. The purpose of this study was to prospectively evaluate spiral CT with maximum-intensity projection in the diagnosis of hepatic artery thrombosis in patients with liver transplants. SUBJECTS AND METHODS. Thirty liver transplant recipients (19 men, 11 women; mean age, 49 years) underwent Doppler sonography and spiral CT with maximum- intensity projection to evaluate both hepatic parenchyma and hepatic vessels. In five cases, these examinations were followed by angiography for suspected hepatic artery thrombosis. RESULTS. Among the 30 patients, results of both Doppler sonography and spiral CT were abnormal in five patients. In all five patients, Doppler sonography revealed an absence of intrahepatic arterial signal (sensitivity, 100%). Spiral CT showed the hepatic artery to be patent from its origin to the anastomosis and then occluded distally in four patients and showed occlusion of the entire hepatic artery in one patient (sensitivity, 100%). Aortography and/or selective arteriography of the celiac axis confirmed the diagnosis of hepatic artery thrombosis in all five cases. The other 25 patients had a normal clinical outcome, 24 with normal findings on Doppler sonograms (specificity, 96%), and 23 with normal findings on spiral CT. Two patients had false-positive CT studies because of technical failures (specificity, 92%). CONCLUSION. Spiral CT with maximum-intensity projection is highly accurate in identifying hepatic artery thrombosis after liver transplantation.
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