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英文誌(2004-)

Journal of Medical Ultrasonics

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1993 - Vol.20

Vol.20 No.09

Original Article(原著)

(0518 - 0522)

血管内超音波法による血管壁構造評価の問題点: 特に内膜側エコーの成因について

Problems in Evaluating Vascular Wall Structure by Intravascular Ultrasound Imaging

福田 久也1, 吉川 純一1, 吉田 清1, 赤阪 隆史1, 赤土 正洋1, 藤原 巍2

Hisaya FUKUDA1, Jyunichi YOSHIKAWA1, Kiyoshi YOSHIDA1, Takashi AKASAKA1, Masahiro SYAKUDO1, Takashi FUJIWARA2

1神戸市立中央市民病院循環器センター, 2川崎医科大学胸部外科

1Department of Cardiology Kobe General Hospital, 2Department of Thoracic Surgery Kawasaki Medical School

キーワード : Intravascular ultrasound, Arterial wall characteristics, Border echo

It has been reported that the wall of the muscular arteries can be visualized as a three layered structure using intravascular ultrasound. However, intimal thickness (intimal leading edge) detected by intravascular ultrasound is thicker than that determined by pathogical specimen. In the present study, we evaluated the above problems in the interpretation of intimal thickness detected by intravascular ultrasound in autopsy cases. The intimal thickness was measured before and after removal of intima including internal elastic membrane. The intimal thickness detected by intravascular ultrasound before removal of the intima ranged from 0.2 to 0.7 mm (mean, 0.4±0.3 mm) and it was decreased after removal of the intima (0.1-0.4 mm, mean, 0.2±0.1 mm). The intimal area before removal of the intima ranged from 7.8 to 16.8 mm2, (mean, 11.2±3.2 mm2) and it was also decreased after removal of intimal (5.2-6.1 mm2, mean, 5.7±0.2 mm2). Thus, intimal thickness detected by intravascular ultrasound consisted of both intimal and border echoes and arterial wall.