ISSN 1004-4140
CN 11-3017/P

多排螺旋CT五个剂量测量点位的统计学差异

郑海亮, 李兴东, 张鹏, 谈春荣, 冯树理, 温廷国, 段永利, 傅岩

郑海亮, 李兴东, 张鹏, 谈春荣, 冯树理, 温廷国, 段永利, 傅岩. 多排螺旋CT五个剂量测量点位的统计学差异[J]. CT理论与应用研究, 2015, 24(3): 337-343. DOI: 10.15953/j.1004-4140.2015.24.03.02
引用本文: 郑海亮, 李兴东, 张鹏, 谈春荣, 冯树理, 温廷国, 段永利, 傅岩. 多排螺旋CT五个剂量测量点位的统计学差异[J]. CT理论与应用研究, 2015, 24(3): 337-343. DOI: 10.15953/j.1004-4140.2015.24.03.02
ZHENG Hai-liang, LI Xing-dong, ZHANG Peng, TAN Chun-rong, FENG Shu-li, WEN Ting-guo, DUAN Yong-li, FU Yan. Statistics Difference of Five Radiation Gage Points for Multi-slice Spiral CT[J]. CT Theory and Applications, 2015, 24(3): 337-343. DOI: 10.15953/j.1004-4140.2015.24.03.02
Citation: ZHENG Hai-liang, LI Xing-dong, ZHANG Peng, TAN Chun-rong, FENG Shu-li, WEN Ting-guo, DUAN Yong-li, FU Yan. Statistics Difference of Five Radiation Gage Points for Multi-slice Spiral CT[J]. CT Theory and Applications, 2015, 24(3): 337-343. DOI: 10.15953/j.1004-4140.2015.24.03.02

多排螺旋CT五个剂量测量点位的统计学差异

基金项目: 

中国计量科学研究院院级课题(25-JB1336-13)

国家自然科学基金(11005119)

北京世纪坛医院院级课题(2013-C11

2013-C13)

详细信息
    作者简介:

    郑海亮(1979-),博士,首都医科大学附属北京世纪坛医院高级工程师,主要从事辐射成像技术研究和医学设备质控管理工作,Tel:010-63926233,E-mail:doczheng@126.com;温廷国(1959-),首都医科大学附属北京世纪坛医院放射科主任医师,主要从事放射影像诊断工作,Tel:010-63926270,E-mail:wtg157911@hotmail.com。

    通讯作者:

    温廷国(1959-),首都医科大学附属北京世纪坛医院放射科主任医师,主要从事放射影像诊断工作,Tel:010-63926270,E-mail:wtg157911@hotmail.com。

  • 中图分类号: R144.1;TP391.41

Statistics Difference of Five Radiation Gage Points for Multi-slice Spiral CT

  • 摘要: 目的:探讨螺旋CT五个辐射剂量测量点位(CTDI100)值之间的差异和相关性统计学关系,以及该机器的辐射稳定性。方法:通过辐射剂量计和辐射剂量模体对螺旋CT五个测量点位进行12次重复测定,对各个点位的测量结果计算其相对偏差,然后用单因素方差分析(One-Way ANOVA)方法分析各点位测量结果之间的显著性。结果:5个点位重复测量的相对标准差分别为0.33%(中心点)、0.73%(3点位)、0.32%(6点位)、1.00%(9点位)和0.32%(12点位);3点位和9点位的平均值接近,单因素方差分析无显著性差异;12点位和6点位的平均值与3点位平均值的相对偏差在0.5%以下。结论:测试螺旋CT辐射稳定性良好,测试机型3点位和9点位在CTDI100上测量等效。在非验收测试和状态测试场合CTDIP可以进行简化。
    Abstract: Object: To investigate the statistic relationship between 5 clock positions of CTDI100 and stabilization of radiation. Method: Radiation meter and phantom are used to 12 time repeating tests on the radiation dose of a spiral CT at 5 Clock positions and then one-way ANOVA method is used to character the their difference significance of those 5 clock positions. Result: The relevant standard difference of measurements at 5 test clock positions are 0.33%(center), 0.73%(3 clock), 0.32%(6 clock), 1.00%(9 clock), 0.32%(12 clock) respectively; meanwhile the average of measurements at 3 clock is much close to that at 9 clock and no significant difference is found in one-way ANOVA test;Moreover the relative deviation between mean value of 12 Clock plus 6 Clock and 3 Clock is 0.5%. Conclusion: The tested spiral CT shows good radiation stability and 3 Clock position have equal effect with 9 clock's in CTDI100 measuring, moreover, peripheral CTDI of that can be simplified except for non-acceptance test or operational condition test.
计量
  • 文章访问数:  788
  • HTML全文浏览量:  5
  • PDF下载量:  2
  • 被引次数: 0
出版历程
  • 收稿日期:  2015-04-24
  • 网络出版日期:  2022-12-08

目录

    /

    返回文章
    返回
    x 关闭 永久关闭