Brachial artery: Measurement of flow-mediated dilatation with cross-sectional US - Technical validation

被引：23
|
作者：
Kao, YH
Mohler, ER
Arger, PH
Sehgal, CM
机构：
[1] Univ Penn, Med Ctr, Dept Radiol, Philadelphia, PA 19104 USA
[2] Univ Penn, Med Ctr, Dept Med, Philadelphia, PA 19104 USA
来源：
RADIOLOGY | 2003年 / 228卷 / 03期
关键词：
arteries; extremities; US; blood; flow dynamics; computers; phantoms;
D O I：
10.1148/radiol.2283020966
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
Ultrasonographic examination of flow phantoms and the brachial artery of a healthy volunteer undergoing reactive hyperemia was performed. Images were analyzed with a user-guided automated boundary detection (UGABD) algorithm to extract boundaries and measure cross-sectional area. UGABD correctly detected pulsatile vasomotion and measured area within 5% of the true value. A comparison of UGABD versus manual tracing yielded linear correlation of 0.81-0.91. Peak vasodilatation measured in response to reactive hyperemia was 150 times greater in pixel count than that measured with longitudinal imaging. Cross-sectional imaging is more sensitive than longitudinal imaging for measuring flow-mediated dilatation of the brachial artery.
引用
收藏
页码：895 / 900
页数：6
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