P. Legmann et al., HEPATIC-ARTERY THROMBOSIS AFTER LIVER-TRANSPLANTATION - DIAGNOSIS WITH SPIRAL CT, American journal of roentgenology, 164(1), 1995, pp. 97-101
OBJECTIVE. The purpose of this study was to prospectively evaluate spi
ral CT with maximum-intensity projection in the diagnosis of hepatic a
rtery thrombosis in patients with liver transplants. SUBJECTS AND METH
ODS. Thirty liver transplant recipients (19 men, 11 women; mean age, 4
9 years) underwent Doppler sonography and spiral CT with maximum-inten
sity projection to evaluate both hepatic parenchyma and hepatic vessel
s. In five cases, these examinations were followed by angiography for
suspected hepatic artery thrombosis. RESULTS. Among the 30 patients, r
esults 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 an
d 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 diagno
sis of hepatic artery thrombosis in all five cases. The other 25 patie
nts 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 fail
ures (specificity, 92%). CONCLUSION. Spiral CT with maximum-intensity
projection is highly accurate in identifying hepatic artery thrombosis
after liver transplantation.