锥形束CT快速模式在前列腺癌放射治疗中的应用研究

曾 辉1,皮国良2,程丽萍1,徐运清1,邓 威1,赖建军3

中国临床医学影像杂志 ›› 2018, Vol. 29 ›› Issue (11) : 829-831.

中国临床医学影像杂志 ›› 2018, Vol. 29 ›› Issue (11) : 829-831. DOI: 10.12117/jccmi.2018.11.015
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锥形束CT快速模式在前列腺癌放射治疗中的应用研究

  • 曾 辉1,皮国良2,程丽萍1,徐运清1,邓 威1,赖建军3
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The analysis of fast model CBCT for prostatic cancer radiation

  • ZENG Hui1, PI Guo-liang2, CHENG Li-ping1, XU Yun-qing1, DENG Wei1, LAI Jian-jun3
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摘要

目的:比较分析在前列腺癌容积调强放射治疗(VMAT)中应用锥形束CT(CBCT)快速模式和标准模式的临床差异,探讨将快速模式(机架转速360°/分)作前列腺癌放疗临床常用模式的可行性。方法:25例前列腺癌患者在首次进行容积调强(VMAT)放疗前进行标准模式CBCT扫描,之后立即快速模式CBCT扫描,两种模式图像分别进行配准分析。选取放疗科主任医生、主治医生、物理师和技师各一名采用主观质量评分法(MOS)进行图像质量评价。结果:标准模式下六维摆位误差分别为(2.2±1.0) mm、(-3.1±3.7) mm、(1.9±2.2) mm、1.0°±0.7°、0.3°±0.5°、-0.4°±0.8°,快速模式下六维方向摆位误差分别为(2.0±0.7) mm、(-2.5±4.0) mm、(2.3±1.9) mm、0.9°±0.5°、0.4°±0.8°、-0.4°±0.6°。两种扫描模式下六维的Kappa一致性检验Cohen κ系数分别为0.9、0.84、0.89、0.90、0.95、0.91。主任医生、主治医生、物理师和技师各一名对图像质量评分的平均值标准模式下分别3.8、3.9、4.0、4.0,快速模式下分别为3.6、3.7、3.9、4.0。结论:在前列腺癌放疗中CBCT快速模式和标准模式具有较满意一致性,图像质量不会明显变差,可以将CBCT快速模式作为前列腺癌放疗图像引导临床常用模式。

关键词

前列腺肿瘤 / 放射治疗 / 计算机辅助 / 体层摄影术 / X线计算机

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曾 辉1,皮国良2,程丽萍1,徐运清1,邓 威1,赖建军3. 锥形束CT快速模式在前列腺癌放射治疗中的应用研究[J]. 中国临床医学影像杂志. 2018, 29(11): 829-831 https://doi.org/10.12117/jccmi.2018.11.015
ZENG Hui1, PI Guo-liang2, CHENG Li-ping1, XU Yun-qing1, DENG Wei1, LAI Jian-jun3. The analysis of fast model CBCT for prostatic cancer radiation[J]. Journal of China Clinic Medical Imaging. 2018, 29(11): 829-831 https://doi.org/10.12117/jccmi.2018.11.015
中图分类号: R737.25    R814.42   

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武汉市卫生和计划生育委员会科研项目(WX16D21)。

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