Magnin P A, Stewart J A, Myers S, von Ramm O, Kisslo J A
Circulation. 1981 Feb;63(2):388-92. doi: 10.1161/01.cir.63.2.388.
The capability of a pulsed Doppler flowmeter combined with a phased-array imaging system to measure volume flow was tested in vitro and in patients undergoing cardiac catheterization. The Doppler-phased-array system (DPA) was used to determine vessel diameter and a superimposed cursor was used to locate the range and angle of the Doppler sample volume. DPA estimates of continuous flow through tubing in a water tank correlated strongly (r = 0.99) with measured flow corresponding to physiologic ranges from 3-12 l/min. For pulsatile flow in a water tank, a correlation of r = 0.86 with measured flow was obtained, whereas DPA estimates of cardiac outputs compared with Fick estimates in the 11 patients produced a correlation of r = 0.83. These data indicate that estimates of cardiac output are possible using the DPA approach.
在体外以及接受心导管检查的患者中，测试了结合相控阵成像系统的脉冲多普勒流量计测量容积流量的能力。使用多普勒相控阵系统（DPA）确定血管直径，并使用叠加光标来定位多普勒采样容积的范围和角度。DPA对水箱中通过管道的连续流量的估计与对应于3 - 12升/分钟生理范围的测量流量高度相关（r = 0.99）。对于水箱中的脉动流量，与测量流量的相关性为r = 0.86，而在11名患者中，DPA对心输出量的估计与菲克估计值相比，相关性为r = 0.83。这些数据表明，使用DPA方法可以估计心输出量。
