Akiyama Y, Kinoshita F, Koakutsu M, Sakata S, Yui N
Radioisotopes. 1979 Aug;28(8):494-9. doi: 10.3769/radioisotopes.28.8_494.
Single photon radioisotope computed tomography (RCT) images were obtained using the following devices such as conventional gamma camera, data processer for exclusive use of nuclear medicine (C.D.S.-4096), magnetic tape and medium size electronic computer FACOM 230-28S (48K) for multipurposes, which are routinely used for clinical purpose. To reconstruct the RCT image we made absorption correction by geometric mean of opposing counts considering the thickness of source and used the convolution integral method. The reconstructed images of phantom study resolved one centimeter clearly and were very similar to original. The RCT image of patient was acquired by the rotation of patients using the revolving chair and the handmade implement which settles the center of patient's head. Three dimensional informations were obtained by one examination with a gamma camera which collects two dimensional images. When using a gamma camera, therefore, not only a transaxial but an arbitraly RCT image will be important to contribute for diagnosis.
使用常规γ相机、核医学专用数据处理器（C.D.S.-4096）、磁带以及多功能中型电子计算机FACOM 230 - 28S（48K）等以下设备获取单光子放射性核素计算机断层扫描（RCT）图像，这些设备通常用于临床目的。为了重建RCT图像，我们考虑源的厚度，通过对置计数的几何平均值进行吸收校正，并使用卷积积分法。体模研究的重建图像清晰分辨出一厘米，且与原始图像非常相似。患者的RCT图像是通过使用转椅旋转患者以及固定患者头部中心的手工工具来获取的。通过一次使用收集二维图像的γ相机检查可获得三维信息。因此，当使用γ相机时，不仅横轴面的RCT图像，而且任意的RCT图像对于诊断都很重要。
