Levenson J A, Peronneau P A, Simon A, Safar M E
Cardiovasc Res. 1981 Mar;15(3):164-70. doi: 10.1093/cvr/15.3.164.
A pulsed Doppler velocimeter suitable for the determination of blood flow velocity and volumic flow in peripheral arteries is described. The apparatus has two main characteristics: an adjustable range-gated time system and a double transducer probe. The error in the determination of the angle between the ultrasound beam and flow of blood with this apparatus was less than 2%, and overestimation of the arterial diameter due to the sample volume size did not exceed 0.035 +/- 0.015 cm. The apparatus was used to determine diameter, blood flow velocity and volumic flow of the brachial artery of 22 healthy men. The values were respectively 0.440 +/- 0.010 cm, 9.15 +/- 1.01 cm.s-1 and 85 +/- 10 cm3.min-1. Administration of intravenous nitroglycerin significantly increased the arterial diameter (p less than 0.001) without any significant change in volumic flow. The described pulsed Doppler velocimeter provides an accurate noninvasive method for determining volumic flow in peripheral arteries in clinical investigation and cardiovascular pharmacology.
本文描述了一种适用于测定外周动脉血流速度和容积流量的脉冲多普勒测速仪。该仪器有两个主要特点：一个可调节的距离选通时间系统和一个双换能器探头。使用该仪器测定超声束与血流之间夹角的误差小于2%，由于样本体积大小导致的动脉直径高估不超过0.035±0.015厘米。该仪器用于测定22名健康男性肱动脉的直径、血流速度和容积流量。其值分别为0.440±0.010厘米、9.15±1.
