目 录
1范围 ······································。·····。··················································。… (1)
2 引用文献 ····················································。·················。················…… (1)
3 术语和计量单位 ································。·············································…… (1)
3.1 术语 ·..............................................................· .·· ............................. (1)
3.2 计量单位 ···································。··。···············。·····························…… (2)
4 概述 ···。。·····。····················。·············································。···。···········…… (2)
5 计量性能要求 ·...................................................................................... (2)
5.1 管电压的准确度 ·................................................................................ (2)
5.2 管电流的准确度 ·················································。·························…… (2)
5.3输出的辐射质 ··············································································…… (2)
5.4 剂量指数 (CTDI) ···························。············································…… (2)
5.5 均匀性 ·······················································································…… (3)
5.6 噪声水平 ··。·················································································…… (3)
5.7 CT值·························································、、、··············、、·、··········、、·一 (3)
5.8 层厚 ·............................................................................................... (3)
5.9 低对比分辨力 ··。···········································································…… (3)
5.10 空间分辨力··························，······················································…… (3)
6 通用技术要求 ··········································································。··。···…… (3)
7 计量器具控制 ·········、····、·······················、·，·······································…… (3)
7.1检定条件 ·····。······································································。·······…… (3)
7.2 检定项目和检定方法 ·.......................................................................... (4)
7.3 检定结果处理 ··············································································…… (7)
7.4 检定周期 ····。·····················。·························································…… (7)
附录A CT计量性能模体 ···························，·········································…… (8)
医用诊断计算机断层摄影装置(CT)X射线辐射源检定规程
范围
本规程适用于新制造、使用中和影响射线束性能的部件修理后的医用诊断计算机断
层摄影装置 (CT) X射线辐射源的检定。
2 引用文献
本规程引用下列文献:
((GB/T 17006-1997 医用成像部门的评价及例行试验》第2一6部分:X射线计算机
体层摄影设备稳定性试验
((IEC 1223一2一6 X射线计算机断层摄影设备稳定性试验》(1994年出版)
DIN6868第6部分 《X射线诊断中的图像质量保证— X射线CT设备稳定性测试》
(1989年5月出版)
DIN6868第53部分 《X射线诊断中的图像质量保证— X射线CT设备验收测试》
(1991)年12月出版)
AAPM REPORT NO. 39 Specification and Acceptance Testing of Computed Scanners
((X射线CT装置性能评价基准》(第二次建议书)，日本CT性能评价委员会
(GB/T 17589-一1998 X射线计算机断层摄影装置影像质量保证检测规范》
使用本规程时，应注意使用上述文献的现行有效版本。
