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KMID : 0361820010200010015
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Journal of the Korean Society of Medical Ultrasound
2001 Volume.20 No. 1 p.15 ~ p.21
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Evaluation of Early Vascular Complications after Liver Transplantation: Usefulness of Power Doppler US with a Microbubble Contrast Agent - Preliminary Results
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Hyo Keun Lim/Dongil Choi
Hyo Keun Lim/Seung Hoon Kim/Jae Min Cho/Ji Yeon Lee/Won Jae Lee/Jae Hoon Lim/Yong-Seon Pyeun/Jae-Won Joh*/Sung-Joo Kim*
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Abstract
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PURPOSE: To evaluate the usefulness of power Doppler ultrasonography (PDUS) with a microbubble contrast agent in assessing the early vascular complications after liver transplantation (LT).
MATERIALS and METHODS: In 15 patients with orthotopic LT (n = 12) and living-related donor LT (n = 3), PDUS examinations, before and after intravenous injection of a microbubble contrast agent, (Levovist ; Schering AG, Berlin, Germany) were performed one-day after the LT. We compared the results of unenhanced PDUS with those of contrast-enhanced PDUS in terms of depicting the complications and conspicuity of the lesions.
RESULTS: In three (20%) of 15 patients, flow signal of hepatic artery was not detected on unen-hanced PDUS, while contrast-enhanced PDUS showed flow signals of the hepatic artery in all patients. Both unenhanced and contrast-enhanced PDUS showed portal vein thromboses in two (13%) of 15 patients, but conspicuity of portal vein thromboses was better appreciated on contrast-enhanced PDUS.
CONCLUSION: Compared with unenhanced PDUS, contrast-enhanced PDUS showed better detection of hepatic arterial flow and increased conspicuity of portal vein thrombosis one-day after LT. Our preliminary data suggest that contrast-enhanced PDUS can be a promising noninvasive technique in assessing the early vascular complications after LT.
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