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英文誌(2004-)

Journal of Medical Ultrasonics

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2001 - Vol.28

Vol.28 No.02

Original Article(原著)

(J099 - J107)

新しい広帯域15MHzリニア電子走査型探触子による筋性中動脈計測精度の検討

Measurements of Medium-Sized Muscular Arteries Using a NovelWide Band 15-MHz Linear Array Probe

山田 聡1, 三神 大世2, 西原 馨子1, 三竹 毅3, 泉 美喜雄3, 吉田 尚浩3, 花岡 明彦3, 呉 ディ1, 小室 薫1, 小野塚 久夫1, 藤井 聡1, 北畠 顕1

Satoshi YAMADA1, Taisei MIKAMI2, Keiko NISHIHARA1, Tsuyoshi MITAKE3, Mikio IZUMI3, Naohiro YOSHIDA3, Akihiko HANAOKA3, Di WU1, Kaoru KOMURO1, Hisao ONOZUKA1, Satoshi FUJII1, Akira KITABATAKE1

1北海道大学大学院医学研究科循環病態内科学, 2北海道大学医療技術短期大学部, 3株式会社日立メディコ超音波事業部

1Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, 2College of Medical Technology, Hokkaido University, 3Ultrasound Division,Hitachi Medical Corporation

キーワード : brachial artery, flow-mediated dilatation, intima-media thickness, radialartery, ultrasonography

We recently developed a wideband 15-MHz linear array probe (15 M) with a band width of 8 MHz (9-17 MHz). Both axial and lateral resolution of 15 M, evaluated using a phantom model, were better than those of the current 10-MHz linear probe. To compare interobserver variability in measurement of medium-sized muscular arteries acquired using a 7.5-MHz linear probe (7.5M), a 10-MHz linear probe (10 M) and 15 M, two observers independently acquired images of the brachial and radial arteries, and measured the diameter and intima-media thickness (IMT) of those arteries in 17 male volunteers. Intraobserver variability in determining percent flow-mediated dilatation (%FMD) was assessed in the same subjects using 15 M. Coefficients of variation (CV) in arteries measured using 7.5 M, 10 M and 15 M were 7.0%, 2.5%, and 1.5%, respectively, for the diameter of the brachial artery; 10.3%, 5.8%, and 3.2%, respectively, for the diameter of the radial artery; and 17.0%, 13.8%, and 8.5%, respectively, for IMT of the far wall of the brachial artery. The CV of measurement of %FMD was 4.6%. The new 15-MHz probe thus warrants use in evaluating morphology and function of muscular arteries of medium size.