Fowler R C, Harris K M, Swift S E, Ward M, Greenwood D C
Department of Radiology, Leeds General Infirmary, England.
Radiology. 1998 Dec;209(3):867-71. doi: 10.1148/radiology.209.3.9844689.
Nine healthy volunteers were studied to validate the reproducibility of the Doppler perfusion index--the ratio of hepatic arterial to total liver blood flow--and to evaluate the method of its derivation and the influence of the variable parameters necessary for its calculation. Wide intraobserver variability was observed, and Doppler perfusion index values were consistently outside the previously reported normal range.
对九名健康志愿者进行了研究，以验证多普勒灌注指数（肝动脉血流与肝脏总血流的比值）的可重复性，并评估其推导方法以及计算所需可变参数的影响。观察到观察者内部存在很大的变异性，并且多普勒灌注指数值始终超出先前报道的正常范围。
