Devine R A, Clarke L P, Vaughan S, Serafini A N
J Nucl Med. 1982 Nov;23(11):1020-4.
A theoretical and experimental analysis of the application of pulsed proton nuclear magnetic resonance (NMR) to the measurement of fluid flow has been made. Calculations of the detector signal line shapes, S(t), for a single-coil NMR laboratory experiment, were performed using a computer to identify the optimum choice of flow signature. The theoretical model included the influence of coil-field shape, coil length, and effects of flow phase. High flow rates, typical of arterial blood flow, were simulated. Good correlation between theory and experiment was observed. The maximum amplitude of the slope of the signal [dS(t)/dt] was found to be the optimum flow signature. The line shape S(t) was found to depend on flow phase. Comparison between theory and experiment provided a better understanding of the potential of NMR for measuring fluid or blood flow.
对脉冲质子核磁共振（NMR）在流体流量测量中的应用进行了理论和实验分析。使用计算机对单线圈NMR实验室实验的探测器信号线形状S(t)进行了计算，以确定流量特征的最佳选择。理论模型包括线圈场形状、线圈长度和流动相位的影响。模拟了动脉血流典型的高流速。观察到理论与实验之间有良好的相关性。发现信号斜率的最大幅度[dS(t)/dt]是最佳流量特征。发现线形状S(t)取决于流动相位。理论与实验之间的比较有助于更好地理解NMR测量流体或血流的潜力。
