NONINVASIVE ULTRASONIC MEASUREMENT OF THE ELASTIC PROPERTIES OF THE HUMAN ABDOMINAL-AORTA
NONINVASIVE ULTRASONIC MEASUREMENT OF THE ELASTIC PROPERTIES OF THE HUMAN ABDOMINAL-AORTA
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DOI：
10.1093/cvr/20.3.208
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发表时间：
1986-03-01
影响因子：
10.8
通讯作者：
YASUDA, H
中科院分区：
文献类型：
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作者：
IMURA, T;YAMAMOTO, K;YASUDA, H
研制了一种与真实的实时超声B型装置相连接的回波跟踪装置，用于无创测量人体腹主动脉的弹性特性。应用该装置测量了61例受试者腹主动脉搏动性内径变化及平均内径。应变和压力-应变弹性模量Ep由通过听诊法获得的脉动直径变化、直径和脉压计算。应变随年龄增长而显著降低; 0.076（0.024）第1组（平均值（SD））（20名35岁以下的年轻人）; 0.048第2组（21名年龄在35岁至60岁之间的中年受试者）中为0.024;第3组（20名年龄超过60岁的老年受试者）中为0.030（0.010）。Ep值为0.99（0.34）× 104。105，1.55（0.68）×105和3.80（2.05）× 105。105 N. m-2。第3组的Ep明显高于第1组和第2组。Ep与年龄的回归方程为Ep =（-0.72 +0.058 × 10 - 6）。年龄）×105 N. m~（-2）（r = 0.73）。Ep值及其随年龄的增长与死后动脉的结果一致。因此，腹主动脉的弹性特性可以通过这种超声方法非侵入性地确定。
A new echo tracking device linked to real time ultrasonic B mode equipment was developed to measure non-invasively the elastic properties of the human abdominal aorta. Pulsatile diameter change and mean diameter of the abdominal aorta were measured in 61 subjects with this ultrasonic device. Strain and pressure-strain elastic modulus Ep were calculated from pulsatile diameter change, diameter, and pulse pressure obtained by the auscultatory method. Strain significantly decreased with age; 0.076 (0.024) (mean (SD)) in group 1 (20 young adults below the age of 35 years); 0.048 (0.024) in group 2 (21 middle aged subjects between the ages of 35 and 60 years); and 0.030 (0.010) in group 3 (20 elderly subjects over the age of 60 years). Ep values were 0.99 (0.34) .times. 105, 1.55 (0.68) .times. 105, and 3.80 (2.05) .times. 105 N .cntdot. m-2 in groups 1, 2, and 3 respectively. Ep in group 3 was significantly higher than in groups 1 and 2. The regression equation relating Ep to age was Ep = (-0.72 + 0.058 .times. age) .times. 105 N .cntdot. m-2 (r = 0.73). The Ep value and its age related increase agreed with the findings in postmortem arteries. The elastic properties of the abdominal aorta could, therefore, be determined non-invasively by this ultrasonic method.