Wagner R H, Halama J R, Henkin R E, Dillehay G L, Sobotka P A
Department of Radiology, Loyola University, Strictch School of Medicine, Maywood, Illinois 60153.
J Nucl Med. 1989 Nov;30(11):1870-4.
Gated blood-pool scans of the left ventricle are routinely employed for determination of the left ventricular ejection fraction. Recently, attempts have been made to evaluate other left ventricular functional parameters. These values include peak emptying rate (PER), time to peak emptying rate (TPER), peak filling rate (PFR), and time to peak filling rate (TPFR). In studying these parameters clinically, we identified many software errors and assumptions that impact on these values. These errors may also affect the determination of left ventricular ejection fraction (EF). We conclude that before any serious investigation of left ventricular functional parameters is undertaken, a detailed evaluation and standardization of the acquisition and edge detection algorithms must be performed.
左心室门控血池扫描通常用于测定左心室射血分数。最近，人们尝试评估其他左心室功能参数。这些参数包括峰值排空率（PER）、达到峰值排空率的时间（TPER）、峰值充盈率（PFR）和达到峰值充盈率的时间（TPFR）。在临床研究这些参数时，我们发现了许多影响这些数值的软件错误和假设。这些错误也可能影响左心室射血分数（EF）的测定。我们得出结论，在对左心室功能参数进行任何深入研究之前，必须对采集和边缘检测算法进行详细评估和标准化。
