CT Quality Control Test from the Second Level 2nd Class Hospitals in Shanghai
10.3969/j.issn.1671-7104.2016.06.016
- VernacularTitle:上海市二级乙等医院CT机质量控制检测
- Author:
Heqing LU
1
;
Wengang WANG
;
Bin LI
Author Information
1. 同济大学附属第一妇婴保健院
- Keywords:
CT;
quality control;
image quality;
acceptance test;
status test
- From:
Chinese Journal of Medical Instrumentation
2016;40(6):451-453,457
- CountryChina
- Language:Chinese
-
Abstract:
The purpose of this study is to assess the present situation about the overal performance quality of CT scanners from Second Level 2nd Class hospitals and private hospitals in Shanghai. The test and evaluation methods refer to Specification for Quality Assurance Test for Computed Tomography X-ray Scanners (GB 17589—2011). A total of 62 CT scanners from 59 hospitals were tested. The mean value of high-contrast resolution was 6.8 lp/cm, low contrast detectability was 2.4, CT number of water was 3.0 HU, noise was 0.43% and uniformity was 2.3 HU. In quality control tests, 20 of 62 CT scanners were qualified, and the percent of pass was only 32%. The equipment aging and lack of preventive maintenance were main reasons for performance degradation of CT scanners.
