| 超声图像引导定义前列腺癌调强放疗的计划靶区 |
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| 引用本文： | Ren C,Liu JB,Yuan YW,Chen LH,Liu Y. 超声图像引导定义前列腺癌调强放疗的计划靶区[J]. 南方医科大学学报, 2011, 31(11): 1926-1928. DOI: 44-1627/R.20111025.1117.008 |
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| 作者姓名： | Ren C Liu JB Yuan YW Chen LH Liu Y |
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| 作者单位： | 南方医科大学南方医院放疗科,广东广州,510515 |
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| 基金项目： | 广东省自然科学基金C03031805); 广东省医学科研基金(A2010367); 南方医院院长基金(2009C007) |
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| 摘 要： | 目的分析超声图像引导摆位系统(B mode acquisition and targeting,BAT)辅助前列腺癌调强放疗时等中心摆位误差,定义无影像引导下前列腺癌调强放疗计划靶区(PTV)的边界。材料和方法选择10例前列腺癌患者每日应用BAT引导摆位进行调强放疗,记录每次等中心前后(AP)、左右和头脚方向上移位的偏差,共255次。采用Kolmogorov-Smimov方法分析检验所获得的数据。结果 BAT验证后等中心移位在左右方向为(3.56±2.71)mm,前后方向(4.08±3.99)mm,头脚方向(3.20±2.92)mm。各个方向上的偏差符合正态分布(RL P=0.806,AP P=0.0.061,SI P=0.106)。在没有图像引导前列腺癌调强放疗摆位的情况下,为满足95%的等剂量曲线覆盖90%患者的CTV,PTV边界需在左右方向向右扩大8.97 mm,向左1.87 mm,前后方向向前需扩大12.05 mm,向后3.91 mm,头脚方向向头侧扩大9.06 mm,向脚侧扩大2.66 mm。结论超声图像引导摆位操作简便,无辐射,系统误差小,可实时纠正。
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| 关 键 词： | 前列腺癌 BAT超声摆位系统 计划靶区 |
B-mode ultrasound for defining planning target volume in intensity-modulated radiotherapy for prostate cancer |
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| Ren Chen,Liu Jia-bin,Yuan Ya-wei,Chen Long-hua,Liu Ying. B-mode ultrasound for defining planning target volume in intensity-modulated radiotherapy for prostate cancer[J]. Journal of Southern Medical University, 2011, 31(11): 1926-1928. DOI: 44-1627/R.20111025.1117.008 |
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| Authors: | Ren Chen Liu Jia-bin Yuan Ya-wei Chen Long-hua Liu Ying |
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| Affiliation: | REN Chen,LIU Jia-bin,YUAN Ya-wei,CHEN Long-hua,LIU Ying Department of Radiotherapy,Nanfang Hospital,Southern Medical University,Guangzhou 510515,China |
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| Abstract: | Objective To define the planning target volume(PTV) margins in intensity-modulated radiotherapy(IMRT) for prostate cancer without imaging guidance using B-mode acquisition and targeting(BAT) ultrasound-based prostate localization.Methods Ten patients with prostate cancer underwent BAT ultrasound alignment before each IMRT session.The set-up deviations,each consisting of isocenter displacements in 3 directions(anterior-posterior, right-left lateral,and superior-inferior),were recorded for a total of 225 time... |
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| Keywords: | prostate carcinoma B-mode acquisition and targeting ultrasound localization planning target volume |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ |
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