Gerber K H, Slutsky R A, Witztum K F, Higgins C B, Ashburn W L
Radiology. 1982 Aug;144(3):623-5. doi: 10.1148/radiology.144.3.6285415.
A noncomputerized, count-based technique for the determination of left ventricular ejection fraction (LVEF), which does not use geometric assumptions of left ventricular shape, was developed. The noncomputerized technique and computerized multigated ventriculography using both fixed and variable region-of-interest (ROI) methods were performed on 16 patients. The LVEFs obtained with the noncomputerized technique correlated well with both the fixed ROI computerized technique (r = .87) and the variable ROI computerized technique (r = .86). It is concluded that when a computer is not available, the noncomputerized technique is a valid alternative for the determination of LVEF in resting patients in stable sinus rhythm.
开发了一种用于测定左心室射血分数（LVEF）的非计算机化、基于计数的技术，该技术不使用左心室形状的几何假设。对16名患者进行了非计算机化技术以及使用固定和可变感兴趣区（ROI）方法的计算机化多门控心室造影。非计算机化技术获得的LVEF与固定ROI计算机化技术（r = 0.87）和可变ROI计算机化技术（r = 0.86）均具有良好的相关性。结论是，在没有计算机的情况下，非计算机化技术是测定窦性心律稳定的静息患者LVEF的有效替代方法。
