论文部分内容阅读
位置计算器是闪烁照相机中很重要的一个部件。位置计算器的准确与否,将直接影响到是否能如实地反映闪烁事件的地点,对临床诊断来说,也就是能否正确地反映患者病变的位置和大小。本文将简略地介绍电阻矩阵式位置计算器的基本设计原理。 TSZ-1闪烁照相机位置计算器采用电阻矩阵。由于采用37个2英寸GDB-526光电倍增管排成六角形(图1),所以需用37路前置放大器送至电阻矩阵联结点上。
The position calculator is a very important part of a flashing camera. The accuracy of the position calculator will directly affect whether the location of the scintillation event can be faithfully reflected. For clinical diagnosis, that is, whether the position and the size of the patient’s lesion are correctly reflected. This article will briefly introduce the basic design principles of resistance matrix position calculator. The TSZ-1 blinking camera position calculator uses a resistor matrix. Due to the hexagonal arrangement of 37 2-inch GDB-526 photomultiplier tubes (Figure 1), a 37-way preamplifier is required to route the resistor matrix junction.