[1]景生华,李傲梅,季小芹,等.金标伪影对射波刀剂量计算及分布的影响[J].中国医学物理学杂志,2020,37(8):996-999.[doi:DOI:10.3969/j.issn.1005-202X.2020.08.011]
 JING Sheng-hua,LI Ao-mei,JI Xiao-qin,et al.Effects of fiducial artifact on dose calculation and distribution of Cyberknife treatment[J].Chinese Journal of Medical Physics,2020,37(8):996-999.[doi:DOI:10.3969/j.issn.1005-202X.2020.08.011]
点击复制

金标伪影对射波刀剂量计算及分布的影响()
分享到:

《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
37
期数:
2020年第8期
页码:
996-999
栏目:
医学放射物理
出版日期:
2020-08-27

文章信息/Info

Title:
Effects of fiducial artifact on dose calculation and distribution of Cyberknife treatment
文章编号:
1005-202X(2020)08-0996-04
作者:
景生华李傲梅季小芹沈泽天周含李兵朱锡旭
东部战区总医院放疗科, 江苏 南京 210002
Author(s):
JING Sheng-hua LI Ao-mei JI Xiao-qin SHEN Ze-tian ZHOU Han LI Bing ZHU Xi-xu
Department of Radiation Oncology, General Hospital of Eastern Theater Command, Nanjing 210002, China
关键词:
射波刀金标伪影剂量计算剂量分布
Keywords:
Keywords: Cyberknife fiducial artifact dose calculation dose distribution
分类号:
R811.1
DOI:
DOI:10.3969/j.issn.1005-202X.2020.08.011
文献标志码:
A
摘要:
目的:分析金标伪影对射波刀剂量计算及分布的影响。方法:采用能谱CT的GSI扫描技术和MARS重建技术获取Lucy模体的原始CT图像和去除金标伪影后的CT图像,利用射波刀Multiplan?划系统对两组CT图像进行等中心计划设计计算,分析金标伪影对剂量计算及分布的影响。结果:金标伪影使CT图像伪影区域的CT值发生改变,最大可达63.22%,金标伪影低估了金标周围(伪影区域)正常重要组织的最大剂量值,高估了金标周围(伪影区域)正常重要组织的最小剂量值,高估了PTV的剂量覆盖率。结论:使用能谱CT可降低金标伪影对射波刀剂量计算及分布的影响。 【关键词】射波刀;金标伪影;剂量计算;剂量分布
Abstract:
Abstract: Objective To analyze the effects of fiducial artifact on the dose calculation and distribution of Cyberknife treatment. Methods The original CT images and the CT images without fiducial artifacts of Lucy phantom were acquired by the GSI scanning technology of energy spectral CT and MARS reconstruction technology. Cyberknife Multiplan?system was used for the design and calculation of the isocentric plan based on the two groups of CT images, and the effects of fiducial artifacts on the dose calculation and distribution were analyzed. Results The CT value of the artifact area on the CT images was affected by fiducial artifact, and the maximum change was up to 63.22%. The existence of fiducial artifact led to the underestimation of the maximum dose of the normal tissues around the fiducial (artifact area), and the overestimations of the minimum dose of the normal tissues around the fiducial (artifact area) and PTVdose coverage. Conclusion Energy spectral CT can be used to reduce the effect of fiducial artifact on the dose calculation and distribution of Cyberknife treatment.

相似文献/References:

[1]王小深,鞠忠建,解传滨,等.射波刀准直器个数对脊柱转移瘤放疗计划的影响[J].中国医学物理学杂志,2016,33(2):195.[doi:10.3969/j.issn.1005-202X.2016.02.018]
[2]曹洋森,于春山,张火俊.射波刀关节限制联锁的解决方案[J].中国医学物理学杂志,2016,33(5):522.[doi:10.3969/j.issn.1005-202X.2016.05.018]
 [J].Chinese Journal of Medical Physics,2016,33(8):522.[doi:10.3969/j.issn.1005-202X.2016.05.018]
[3]曹洋森,于春山,张火俊,等.射波刀Monte Carlo与Ray-Tracing算法在胰腺癌中的剂量学比较[J].中国医学物理学杂志,2016,33(10):1008.[doi:10.3969/j.issn.1005-202X.2016.10.007]
 [J].Chinese Journal of Medical Physics,2016,33(8):1008.[doi:10.3969/j.issn.1005-202X.2016.10.007]
[4]赵瑞,李莎,陆军,等.射波刀颅骨追踪俯卧位与仰卧位治疗精度对比[J].中国医学物理学杂志,2017,34(8):790.[doi:DOI:10.3969/j.issn.1005-202X.2017.08.007]
[5]王朝壮,王鑫,王恩敏,等. 不同厚度CT图像重建的DRR对射波刀治疗头部肿瘤精度的影响[J].中国医学物理学杂志,2017,34(9):882.[doi:DOI:10.3969/j.issn.1005-202X.2017.09.005]
 [J].Chinese Journal of Medical Physics,2017,34(8):882.[doi:DOI:10.3969/j.issn.1005-202X.2017.09.005]
[6]杨晶,柳刚,聂鑫,等. 基于仿真头颈模体研究处方等剂量线对射波刀计划质量的影响[J].中国医学物理学杂志,2018,35(12):1371.[doi:DOI:10.3969/j.issn.1005-202X.2018.12.002]
 YANG Jing,LIU Gang,NIE Xin,et al. Effect of prescription isodose line on the quality of CyberKnife plan designed on anthropomorphic head and neck phantom[J].Chinese Journal of Medical Physics,2018,35(8):1371.[doi:DOI:10.3969/j.issn.1005-202X.2018.12.002]
[7]周含,李傲梅,景生华,等. 射波刀计划设计中治疗路径选择对靶区剂量分布的影响[J].中国医学物理学杂志,2018,35(12):1408.[doi:DOI:10.3969/j.issn.1005-202X.2018.12.008]
 ZHOU Han,LI Aomei,JING Shenghua,et al. Effects of treatment paths on target dosimetric distribution in CyberKnife radiotherapy plan[J].Chinese Journal of Medical Physics,2018,35(8):1408.[doi:DOI:10.3969/j.issn.1005-202X.2018.12.008]
[8]葛瑞刚,解传滨,戴相昆,等.D2SRS两种照射技术与CyberKnife在脑转移瘤立体定向放疗中的剂量学研究[J].中国医学物理学杂志,2020,37(3):265.[doi:DOI:10.3969/j.issn.1005-202X.2020.03.001]
 GE Ruigang,XIE Chuanbin,DAI Xiangkun,et al.Dosimetric comparison of two kinds of radiation techniques of D2SRS and CyberKnife in stereotactic radiotherapy for brain metastases[J].Chinese Journal of Medical Physics,2020,37(8):265.[doi:DOI:10.3969/j.issn.1005-202X.2020.03.001]
[9]王琳.位置重复性对射波刀模体绝对剂量验证的影响[J].中国医学物理学杂志,2020,37(9):1107.[doi:10.3969/j.issn.1005-202X.2020.09.005]
 WANG Lin.Effect of position repeatability on the verification of absolute dose for CyberKnife[J].Chinese Journal of Medical Physics,2020,37(8):1107.[doi:10.3969/j.issn.1005-202X.2020.09.005]

备注/Memo

备注/Memo:
【收稿日期】2020-03-09 【作者简介】景生华,硕士研究生,主管技师,研究方向 :放射治疗物理学,E-mail: jingsh99@139.com 【通信作者】朱锡旭,博士,研究方向:肿瘤放射治疗学,E-mail: zhuxixu@hotmail.com
更新日期/Last Update: 2020-08-27