JJF-放射治疗专项检查仪校准规范__实验报告

1、放射治疗专项检查仪校准规范实验报告2018年10月30日为了验证放射治疗专项检查仪校准规范（以下简称规范）的科学性、规范性、 实用性、可行性，组织了中国测试技术研究院、四川省肿瘤医院等相关技术工程 人员会同医院临床工程师、设备工程师、生产厂家售后工程师，依据规范的各项 技术要求以及校准条件与校准方法的规定，对放射治疗专项检查仪进行了校准试 验。%1. 参加校准试验人员1. 中国测试技术研究院龚岚（副研究员）2. 四川省肿瘤医院 康盛伟（副研究员）3. 中国测试技术研究院 林滔（工程师）4. 四川省肿瘤医院唐斌（助理研究员）%1. 校准试验目的通过对放射治疗专项检查仪的校准试验，对放射治疗专项检

2、查仪校准规范 屮推荐的计量特性、校准条件、校准方法、校准结果处理等进行验证，以确定其 制定的科学性、规范性、实用性、可行性。%1. 校准试验过程1 环境条件应符合放射治疗专项检查仪的技术要求环境温度：2（tc 土 5°c；相对湿度：80%大气压力：95. 8kpa；供电电源：电压：（220土22） v,频率：（50土 1） hz；周围无影响校准系统正常工作的机械振动和电磁干扰。2. 标准器及其他设备2. 1标准剂量计测量范围（0.01 10） gy/min； u=2. 0 %, k二2。2. 3辐射场输出剂量稳定性小于0.3%o2. 4水模体容积为 30 cmx 30 cmx 30

3、cm 2. 5温度计测量范围（050） °c,最小分度值0. 2 °c2. 6气压表测量范围（70110） kpa,最小分度值0.1 kpa3. 校准项目共4项：3.1校准因子3.2测量重复性3.3示值非线性3. 4短期稳定性本次试验共校准了放射治疗专项检查仪2台，1台德国ptw、1台美国 standard imagingo计量特性指标均符合校准规范要求。通过校准试验，验证 了放射治疗专项检查仪校准规范中的校准方法是可靠的、准确的，同时也验 证了规范对计量特性、校准条件、测量标准、校准方法、校准结果处理等的描述 和规定是符合要求的，能够解决放射治疗专项检查仪的量值溯源问题。

4、中国测试技术研究院四川省肿瘤医院四川省人民医院2018 年口月 06 口附录：放射治疗专项检查仪校准原始记录实验1:地点：四川省肿瘤医院放疗中心时间：2018. 10. 22被校仪器名称：quickcheck webline型号：t420131编号：2359生产厂家：德国ptw参考辐射源：医用直线加速器型号：unique编号：2234标准剂量仪型号：unidos e编号：t10009-092182+tw30013-008708证书有效期：2018. 10. 30温度：20. 8°c湿度：68%rh气压：96. 2kpa1.外观及功能性检查：正常2.校准因子:出束条件:6mv, ssd

5、:100cm, fs:10cmx 10cm, 100mu,水下 5cm 处标准剂量仪读数(gy)0.94300.94580.9458校准因子cax (gy)0.978380.979840.978840.965lio (gy)0.982800.983180.982290.961rio (gy)1.001821.001931.001710.943t10 (gy)0.992520.993250.991540.952gio (gy)0.987610.987130.987910.957l20 (gy)1.024241.024091.024530.922r20 (gy)1.049341.049211.04

6、9530.900t20 (gy)1.023191.023301.022980.923g20 (gy)1.027931.027531.027940.9193测量重复性:出束条件:6mv, ssd:100cm, fs:20cmx20cm, l.ogy探测器示值/gy重复性/%12345678910cax1.08801.08741.08871.08711.08771.08741.08711.0881.08741.08710.05l101.10511.10461.10511.10441.10511.10481.10481.10511.10541.10440.03r101.12431.12391.124

7、21.12341.12411.12391.12411.12431.12321.12370.03t101.11861.11811.11821.11761.11831.11811.11861.11821.11811.11790.03g101.10911.10871.10891.10821.10881.10871.10931.10851.10881.10860.03l201.10421.10431.10451.10371.10421.10431.10421.10391.10411.10420.02r201.12741.12771.12841.12771.12841.12791.12761.12791

8、.1281.12830.03t201.11391.11431.11481.11401.11481.11441.11361.11381.11421.11410.04g201.11061.11041.11061.11011.11071.11061.11061.11041.11011.11070.024.示值非线性：出束条件:6mv, ssd:100cm, fs:20cmx20cm参考剂量值0.5 gyl.ogy1.5 gy2.0 gy2.5 gy非线性误差/%cax(gy)0.543651.08761.63322.17882.72130.17llo(gy)0.552391.10491.65922.

9、21402.76500.19rlo(gy)0.561891.12391.68792.25172.81260.17tlo(gy)0.559101.11821.67912.24002.79790.16glo(gy)0.554311.10881.66492.22092.77420.15l20(gy)0.552031.10421.65822.21232.76310.18r20(gy)0.564091.12791.69402.26032.82310.20t20(gy)0.557241.11421.67382.23292.78890.20g20(gy)0.555321.11051.66772.22532.

10、77930.195.短期稳定性：出束条件：6mv. ssd:100cm, fs:20cmx20cm探测 器第1天/gy第2天/gy第3天/gy第4天/gy第5天/gyt亠cax1.07871.07821.07881.08051.0891.08051.08081.08051.08091.08141.08161.08171.07961.07991.07930.44l101.09621.09641.09611.09861.09811.09851.09961.09951.09991.10041.10051.10041.09841.09861.09870.39r101.11521.11531.11591

11、.11621.11611.11641.11621.1161.11631.11691.11631.11681.11541.11521.11580.10t101.11021.11041.11051.11131.11031.11021.11211.11321.11281.11261.11221.11311.11081.11031.11130.21g101.09931.09921.09951.10131.10121.10151.10081.10041.10061.10211.10221.10281.10081.10051.10090.28l201.09441.09481.09521.09511.095

12、21.09471.09581.09531.09531.09561.09511.09541.09371.09391.0942-0.08r201.11801.11831.11841.12141.12181.12301.12321.12331.12311.12431.12461.12481.12131.12111.12230.57t201.10231.1021.10251.10471.10491.10431.10251.10281.10271.10461.10491.10451.10481.10521.10440.94g201.10241.10261.1031.10401.10431.10421.1

13、0581.10551.1061.10521.10571.10581.10271.10221.10290.28实验2：地点：四川省肿瘤医院放疗中心时间：2018. 10. 22被校仪器名称：qa beamchecker'''plus型号：ref 90501编号：z171548生产厂家：standard imaging参考辐射源：医用直线加速器型号：unique编号：2234标准剂量仪型号：unidos e编号：t10009-092182+tw30013-008708证书有效期：2018. 10. 30温度：20. 8 °c湿度：68%rh气压：96. 2kpa1

14、外观及功能性检查：正常2.校准因子：出束条件:6mv, ssd:100cm, fs:10cmx 10cm, 100mu,水下 5cm 处标准剂量仪读数（gy）0.94550.94600.9443校准因子top2507557250758925075493.769 x10'7left2539197253921025391823.722xl(y7center2441874244192124418953.871 x io'7right2581291258130525812733.662 x io'7bottom2561211256125625612073.690 x10'

15、;73.测量重复性：出束条件:6mv, ssd:100cm, fs:20cmx20cm, l.ogy探测器示值重复性/%12345678910top268492686326845268492683626837269012688426855268620.08left272302717427169271842718027189272762726727245272580.15center265032651626497265022648926490265492653426508265150.07right2753427563275412754627529275322759127574275412754

16、80.07bottom273292732527308273172730827309273902737127336273530.104.示值非线性：出朿条件：6mv, ssd:100cm, fs:20cmx20cm参考剂量值0.5 gy1.0 gy1.5 gy2.0 gy2.5 gy非线性误差/%top13455268464026453673671520.24left13629271824081054420681160.28center13279265003974552988662930.22right13802275514130455054688740.19bottom13695273114097554628683520.295.短期稳定性:出束条件:6mv, ssd:100cm, fs:20cmx20cm探测器第1天/gy第2天/gy第3天/gy第4天/gy第5天/gy稳左性/%top2685826849268532673526744267482701827003270322703827015270312704027034270440.69left272172721127231272232722027242272412723227231272392724327264272202721