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Journal of Medical Ultrasonics

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1994 - Vol.21

Vol.21 No.09

Case Report(症例報告)

(0583 - 0587)


Intravascular Ultrasound Assessment of the Effects of Balloon Angioplasty in Renovascular Hypertension

田辺 一明1, 大野 美和1, 浅沼 俊彦1, 吉冨 裕之1, 村上 陽1, 佐野 和也1, 島田 俊夫1, 盛岡 茂文1, 村上 林児2

Kazuaki TANABE1, Miwa OHNO1, Toshihiko ASANUMA1, Hiroyuki YOSHITOMI1, Yo MURAKAMI1, Kazuya SANO1, Toshio SHIMADA1, Shigefumi MORIOKA1, Rinji MURAKAMI2

1島根医科大学第4内科, 2島根医科大学救急部

1Fourth Department of Internal Medicine Shimane Medical University, 2Department of Emergency Care Shimane Medical University

キーワード : Balloon angioplasty, Fibromuscular hyperplasia, Intravascular ultrasound, Renovascular hypertension

Intravascular ultrasound (IVUS) is a new tomographic imaging method suitable for evaluating vascular-wall morphology. Accordingly, there is not yet sufficient data on results obtained with IVUS in cases of renovascular hypertension. Recognizing the need for more data, we assessed the effect of balloon angioplasty in two cases of renovascular hypertension. IVUS examination of these patients demonstrated thickened sonolucent zones at the site of angiographic stenosis. These thickened sonolucent zones were thought to represent medial fibromuscular hyperplasia. Improvement in the luminal area after balloon angioplasty in both cases was assumed to be associated with intimal and medial disruption. IVUS provides detailed images of abnormal wall morphology not obtainable with angiography in patients with renovascular hypertension.