Naoki Hirokawa1, Kazumitsu Koito2, Taishi Satoh2, Masakazu Hori2, Masato Saitoh2, Mutsumi Nishida3, Fumitake Hata4, Motoki Nishi5, Masato Hareyama2. 1. Department of Radiology, School of Medicine, Sapporo Medical University, Minami-1, Nishi-16, Chuo-ku, Sapporo, 060-8543, Japan. nhirokaw@sapmed.ac.jp. 2. Department of Radiology, School of Medicine, Sapporo Medical University, Minami-1, Nishi-16, Chuo-ku, Sapporo, 060-8543, Japan. 3. Division of Clinical Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan. 4. First Department of Surgery, Sapporo Medical University, Sapporo, Japan. 5. Department of Fundamental Health Sciences, Health Sciences University of Hokkaido, Tobetsu, Japan.
Abstract
PURPOSE: The purpose of this study was to elucidate the wall layer appearance of the human hepatic artery shown by intravascular ultrasound (IVUS). METHODS: We evaluated the wall layer appearance of 57 human hepatic arteries from 36 cadavers. The thickness of the inner high-echoic layer and the second low-echoic layer of the arteries was measured by IVUS, and it was compared with that of the arterial intima and media, respectively. RESULTS: The thickness of the inner high-echoic layer was 0.2 ± 0.1 mm and that of the second low-echoic layer was 0.4 ± 0.1 mm, on IVUS. However, the histological thickness of the intima was 120 ± 45 μm and that of the media was 258 ± 71 μm. The media of the hepatic artery correlated significantly with the second low-echoic layer on IVUS (r = 0.62, P < 0.01). The diameter of the vessels measured on IVUS correlated significantly with that of the histological specimens (r = 0.89, P < 0.01). CONCLUSION: From our results, the three layers of the hepatic artery detected with IVUS may correspond to the intima, media, and adventitia, respectively.
PURPOSE: The purpose of this study was to elucidate the wall layer appearance of the human hepatic artery shown by intravascular ultrasound (IVUS). METHODS: We evaluated the wall layer appearance of 57 human hepatic arteries from 36 cadavers. The thickness of the inner high-echoic layer and the second low-echoic layer of the arteries was measured by IVUS, and it was compared with that of the arterial intima and media, respectively. RESULTS: The thickness of the inner high-echoic layer was 0.2 ± 0.1 mm and that of the second low-echoic layer was 0.4 ± 0.1 mm, on IVUS. However, the histological thickness of the intima was 120 ± 45 μm and that of the media was 258 ± 71 μm. The media of the hepatic artery correlated significantly with the second low-echoic layer on IVUS (r = 0.62, P < 0.01). The diameter of the vessels measured on IVUS correlated significantly with that of the histological specimens (r = 0.89, P < 0.01). CONCLUSION: From our results, the three layers of the hepatic artery detected with IVUS may correspond to the intima, media, and adventitia, respectively.
Entities:
Keywords:
human hepatic artery; inner high-echoic layer; intravascular ultrasound (IVUS); second low-echoic layer; three layers
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