[1]张光伟,吴何苟,刘剑锋,等.光学表面监测系统自动摆位功能对乳腺癌放疗患者治疗精度及摆位时间的影响[J].中国医学物理学杂志,2021,38(4):411-415.[doi:DOI:10.3969/j.issn.1005-202X.2021.04.003]
　ZHANG Guangwei,WU Hegou,LIU Jianfeng,et al.Effects of automatic setup function of optical surface monitoring system on treatment accuracy and setup time of breast cancer patients undergoing radiotherapy[J].Chinese Journal of Medical Physics,2021,38(4):411-415.[doi:DOI:10.3969/j.issn.1005-202X.2021.04.003]
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光学表面监测系统自动摆位功能对乳腺癌放疗患者治疗精度及摆位时间的影响()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
38卷
期数:
2021年第4期
页码:
411-415
栏目:
医学放射物理
出版日期:
2021-04-29

文章信息/Info

Title:
Effects of automatic setup function of optical surface monitoring system on treatment accuracy and setup time of breast cancer patients undergoing radiotherapy
文章编号:
1005-202X（2021）04-0411-05
作者:
张光伟; 吴何苟; 刘剑锋; 高艳; 李彬; 钟鹤立
深圳市人民医院/暨南大学第二临床医学院/南方科技大学第一附属医院肿瘤放疗科， 广东 深圳518020
Author(s):
ZHANG Guangwei;  WU Hegou;  LIU Jianfeng;  GAO Yan;  LI Bin;  ZHONG Heli
Department of Radiation Oncology, Shenzhen Peoples Hospital/the Second Clinical Medical College of Jinan University/the First Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518020, China
关键词:
乳腺癌; 光学表面监测系统; 放射治疗; 自动摆位; 体表标记
Keywords:
Keywords: breast cancer optical surface monitoring system radiotherapy automatic setup body surface marker
分类号:
R811.1
DOI:
DOI:10.3969/j.issn.1005-202X.2021.04.003
文献标志码:
A
摘要:
目的：研究放射治疗摆位时，相较于以传统体表标记实行摆位，利用光学表面监测系统（OSMS）自动摆位功能实行摆位对乳腺癌放疗患者治疗精度及摆位时间的影响。方法：30例乳腺癌保乳术后患者随机分为两组，每组15例。OSMS组，以OSMS引导放疗摆位，利用六维自动移床摆位功能。体表标记组，以体表标记引导放疗摆位。记录每次摆位时间和CBCT配准误差数据。误差数据包括左右（x）、头脚（y）、前后（z）方向平移误差和旋转方向（Rx、Ry、Rz）误差。分别对两组CBCT配准误差数据和摆位时间数据行独立样本t检验。结果：OSMS组x、y、z方向平移误差和Rx、Ry、Rz方向旋转误差分别为（0.12±0.11）、（0.12±0.09）、（0.13±0.08） cm和0.33°±0.43°、0.56°±0.50°、0.50°±0.52°，体表标记组分别为（0.15±0.11）、（0.22±0.16）、（0.25±0.16） cm和0.66°±0.72°、0.99°±0.69°、0.78°±0.56°。两种摆位方法在平移y和z方向以及旋转Rx、Ry、Rz方向统计结果有统计学意义（P<0.01）。在x方向平移误差无统计学差异（P>0.05）。OSMS组平移误差绝对值≤0.3 cm在x、y、z方向分别为94%、97%、97%，体表标记组为91%、63%、60%；OSMS组旋转误差绝对值≤1°在Rx、Ry、Rz方向分别为88%、78%、82%，体表标记组为74%、53%、67%。OSMS组摆位时间为（130±27） s，体表标记组为（202±31） s，结果有统计学差异（P<0.01），OSMS引导自动摆位可减少约70 s摆位时间。结论：相较于体表标记引导摆位，利用OSMS自动摆位功能可明显提高摆位精度，减少摆位时间。 【关键词】乳腺癌；光学表面监测系统；放射治疗；自动摆位；体表标记
Abstract:
Abstract: Objective To investigate the effect of radiotherapy setup using the automatic setup function of optical surface monitoring system (OSMS) on the treatment precision and setup time of breast cancer patients undergoing radiotherapy, compared with the positioning using traditional body surface markers. Methods Thirty patients after radical mastectomy for breast cancer were enrolled in the study and randomly divided into two groups, with 15 patients in each group. In OSMS group, radiotherapy setup was guided by OSMS, and six-dimensional automatic couch shifting was used to move the patients to the correct position, while in the other group, radiotherapy setup was guided by body surface markers. Time for each setup and CBCT registration error data were recorded. The error data included the translational errors in left-right (x), head-foot (y), forward-backward (z) directions and the rotation errors in Rx, Ry and Rz directions. Independent sample t-test was conducted on CBCT registration error data and setup time data of two groups. Results The translational errors in x, y and z directions and the rotation errors in Rx, Ry and Rz directions in OSMS group were (0.12±0.11) cm, (0.12±0.09) cm, (0.13±0.08) cm, and 0.33°±0.43°, 0.56°±0.50°, 0.50°±0.52°, respectively, while those in body surface marker group were (0.15±0.11) cm, (0.22±0.16) cm, (0.25±0.16) cm, and 0.66°±0.72°, 0.99°±0.69°, 0.78°±0.56°, respectively. There were statistical differences between two groups in the translational errors in y and z directions and the rotation errors in Rx, Ry, Rz directions (P<0.01), and no statistical difference was found in the translational error in x direction. The absolute value of translational error ≤0.3 cm in x, y, and z directions accounted for 94%, 97%, 97% in OSMS group, and 91%, 63%, 60% in body surface marker group and the percentages of the absolute value of rotation error ≤1° in x, y, and z directions was 88%, 78%, 82% in OSMS group, and 74%, 53%, 67% in body surface marker group. Compared with setup guided by body surface markers, OSMS-guided automatic setup could reduce the setup time by about 70 s, with statistical differences ［(130±27) s vs (202±31) s, P<0.01］. Conclusion Compared with setup guided by body surface markers, the automatic setup function of OSMS can significantly improve setup accuracy and reduce setup time.

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备注/Memo

备注/Memo:
【收稿日期】2020-11-26 【基金项目】国家自然科学基金（61871374） 【作者简介】张光伟，主管技师，研究方向：肿瘤放射治疗技术，E-mail: 59283444@qq.com 【通信作者】钟鹤立，高级工程师，研究方向：肿瘤放射物理，E-mail: 747775309@qq.com
更新日期/Last Update: 2021-04-29