Legarth J, Nolsoe C
Department of Obstetrics and Gynaecology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
J Ultrasound Med. 1990 Aug;9(8):449-53. doi: 10.7863/jum.1990.9.8.449.
The relationship between peripheral resistance and the Doppler blood velocity indices--pulsatility index (PI), A/B ratio, resistance index (RI), and the minimum velocity (Vmin)--was evaluated in the brachial arteries of five young women. All the indices showed a very good correlation with resistance (r greater than 94%); the regression line for both PI and A/B were linear, whereas the relationships between resistance and RI, and resistance and Vmin, were best described by a logarithmic and by power function, respectively. Although the women were carefully selected to be as alike as possible, there were significant differences in the individual slopes of the regression lines.
评估了五名年轻女性肱动脉中周围阻力与多普勒血流速度指标——搏动指数（PI）、A/B比值、阻力指数（RI）和最小速度（Vmin）之间的关系。所有指标与阻力均呈现出非常良好的相关性（r大于94%）；PI和A/B的回归线均为线性，而阻力与RI以及阻力与Vmin之间的关系分别最适合用对数函数和幂函数来描述。尽管这些女性经过精心挑选以尽可能相似，但回归线的个体斜率仍存在显著差异。
