MEASUREMENT OF INSTANTANEOUS BLOOD-FLOW VELOCITY IN THE HUMAN AORTA USING PULSED DOPPLER ULTRASOUND
MEASUREMENT OF INSTANTANEOUS BLOOD-FLOW VELOCITY IN THE HUMAN AORTA USING PULSED DOPPLER ULTRASOUND
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DOI：
10.1093/cvr/16.1.26
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发表时间：
1982-01-01
影响因子：
10.8
通讯作者：
BRUBAKK, AO
中科院分区：
文献类型：
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作者：
GISVOLD, SE;BRUBAKK, AO
对27例正常人进行了脉冲多普勒系统的重复性和易用性研究。在坐位和仰卧位测量升主动脉和主动脉弓。90%的受试者获得了高质量的录音。最大速度为120厘米和108厘米。S-1分别出现在男性和女性升主动脉仰卧位，相应的加速度分别为2254和2148 cm .cntdot。2,。从坐位到仰卧位，升主动脉和主动脉弓的平均流速曲线和最大流速曲线下的积分变化约为30%，而平均流速曲线和最大流速曲线应与卒中容积成正比。对所有受试者的主动脉尺寸、合理值或心输出量进行一定的假设。通过对5名受试者进行10次重复测量来检验测量结果的可重复性。所有测量变量的平均变异系数在6 - 11%之间。利用脉冲超声可以测量升主动脉和主动脉弓的血流速度，并且该方法具有重复性，可以测量血流和血流速度的变化bbb10 %。
The reproducibility and ease of use of a pulsed Doppler system were investigated in 27 normal subjects. Measurements were performed in the ascending aorta and the aortic arch in the sitting and supine position. Good quality recordings were obtained in > 90% of the subjects. Maximum velocities of 120 and 108 cm .cntdot. s-1 were found in the supine position of the ascending aorta in males and females, respectively, while the corresponding accelerations were 2254 and 2148 cm .cntdot. s-2. When moving from the sitting to the supine position, changes in integral under the mean and maximum velocity curve, which is supposed to be porportional to stroke volume, were approximately 30%, both in the ascending aorta and in the aortic arch. Making certain assumptions, about dimensions of the aorta, reasonable values or cardiac output were calculated in all subjects. The reproducibility of the measurements was tested by making 10 repeat measurements in 5 subjects. The mean variation coefficient was between 6 and 11% for all measured variables. Blood flow velocity can be measured in the ascending aorta and the aortic arch using pulsed ultrasound, and the method had a reproducibility which permits measurements of changes in the flow and flow velocity of > 10%.