Journal of Korean Society of Medical Ultrasound 2001;20(1): 15-21.
Evaluation of Early Vascular Complications after Liver Transplantation: Usefulness of Power Doppler US with a Microbubble Contrast Agent - Preliminary Results.
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
1Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine.
2Department of General Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine.
  Published online: March 1, 2001.
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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