[单光子发射断层扫描γ相机的质量控制]

[Quality controls for the gamma camera with single photon emission tomography].

作者信息

Bergamini C, Laudicina L, Marengo M, Mazzotti G, Dondi M

出版信息

Radiol Med. 1987 Jan-Feb;73(1-2):71-5.

Abstract

Some tests and quality controls to assess the initial conditions and the working performance of a SPET system (Single Photon Emission Tomography), are described. Suitable tomographic phantoms were designed and built. We outline the methods to check MTF, stability of the photoelectric peak, centre of rotation, spatial uniformity, spatial resolution, sensitivity. NEMA tests should first be carried out to check the planar scintigraphic performance of the gamma-camera. This study allows to comprehensively evaluate the qualitative and quantitative performance of the SPET system and the correct check frequency of investigated parameters.

摘要

本文描述了一些用于评估单光子发射断层扫描（SPET）系统初始条件和工作性能的测试及质量控制方法。设计并制造了合适的断层模型。我们概述了检查调制传递函数（MTF）、光电峰稳定性、旋转中心、空间均匀性、空间分辨率和灵敏度的方法。应首先进行美国电气和电子工程师协会（NEMA）测试，以检查伽马相机的平面闪烁成像性能。本研究有助于全面评估SPET系统的定性和定量性能以及所研究参数的正确检查频率。