Balachandran S, Eason S, McGuire L, Bernard S, Boyd C
Eur J Nucl Med. 1986;12(2):69-71. doi: 10.1007/BF00364731.
In order to measure ejection fractions (EFs) from nuclear ventriculograms, we devised a semi-automated edge-detection technique based on a combination of inverse Fourier analysis and second-derivative techniques. Initial clinical studies showed that, for the left ventricle, our method gives EF values statistically identical with those obtained using a conventional isocontour technique. For the right ventricle, however, the values obtained using the two methods were somewhat more at variance. Despite requiring a longer processing time, the results obtained with our method are reproducible because less operator intervention is necessary.
为了从核心室造影测量射血分数（EF），我们基于傅里叶逆分析和二阶导数技术的组合设计了一种半自动边缘检测技术。初步临床研究表明，对于左心室，我们的方法得出的EF值在统计学上与使用传统等轮廓技术获得的值相同。然而，对于右心室，使用这两种方法获得的值差异较大。尽管我们的方法需要更长的处理时间，但由于所需的操作员干预较少，因此获得的结果具有可重复性。
