Ikuno Y, Tanaka C, Takeuchi K, Oku H, Yoshimura T, Kotsumi K, Minamikawa H, Inoue E, Komatsu H, Ochi H, Furukawa K, Nishimoto M, Kawai S, Sakaguchi K
J Cardiogr. 1981 Sep;11(3):791-801.
In 19 patients with anteroseptal myocardial infarction, the wall motion of interventricular septum was analyzed by RI angiography using the amplitude image and the phase image. Both images were obtained from ECG gated blood pool data by Fourier analysis. Namely, from the first harmonic in the Fourier series, the heart motion was detected as the amplitude and phase of time-activity curve in each pixel. The distribution of the amplitudes and phases were displayed in color scale, and then both the amplitude and phase images were acquired. Those images allowed us visualization of the ischemic area, even if the scar was parallel to the detector. Moreover, we were able to assess the wall motion of the entire interventricular septum and to distinguish hypokinetic region and dyskinetic region from the hypokinetic region with shift of phase estimated by conventional method. Abnormal region detected by those images closely corresponded with the region of decreased radioisotope concentration in thallium-201 myocardial scintigram.
对19例前间隔心肌梗死患者，采用振幅图像和相位图像，通过放射性核素血管造影分析室间隔的壁运动。这两种图像均通过傅里叶分析从心电图门控血池数据中获得。也就是说，从傅里叶级数的一次谐波中，将心脏运动检测为每个像素中时间-活性曲线的振幅和相位。振幅和相位的分布以彩色标度显示，然后获取振幅图像和相位图像。即使瘢痕与探测器平行，这些图像也能让我们观察到缺血区域。此外，我们能够评估整个室间隔的壁运动，并通过传统方法估计的相位偏移，将运动减弱区域和运动障碍区域与运动减弱区域区分开来。这些图像检测到的异常区域与铊-201心肌闪烁图中放射性核素浓度降低的区域密切对应。
