[1]杨海松,聂晓历,刘利彬,等. 鼻咽癌螺旋断层调强放疗中优化MVCT扫描范围的可行性[J].中国医学物理学杂志,2018,35(8):874-878.[doi:DOI:10.3969/j.issn.1005-202X.2018.08.002]
 YANG Haisong,NIE Xiaoli,LIU Libin,et al. Feasibility on optimizing MVCT scan range in tomotherapy of nasopharyngeal carcinoma[J].Chinese Journal of Medical Physics,2018,35(8):874-878.[doi:DOI:10.3969/j.issn.1005-202X.2018.08.002]
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 鼻咽癌螺旋断层调强放疗中优化MVCT扫描范围的可行性()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
35卷
期数:
2018年第8期
页码:
874-878
栏目:
医学放射物理
出版日期:
2018-08-20

文章信息/Info

Title:
 Feasibility on optimizing MVCT scan range in tomotherapy of nasopharyngeal carcinoma
文章编号:
1005-202X(2018)08-0874-05
作者:
 杨海松1聂晓历2刘利彬1傅万凯1黄星武1邹钦凤1柏朋刚1
 1.福建省肿瘤医院/福建医科大学附属肿瘤医院放疗科, 福建 福州 350014; 2.福建省肿瘤医院/福建医科大学附属肿瘤医院放诊科, 福建 福州 350014
Author(s):
 YANG Haisong1 NIE Xiaoli2 LIU Libin1 FU Wankai1 HUANG Xingwu1 ZOU Qinfeng1 BAI Penggang1
 1. Department of Radiotherapy, Fujian Provincial Cancer Hospital/Fujian Medical University Cancer Hospital, Fuzhou 350014, China; 2. Department of Radiological Diagnosis, Fujian Provincial Cancer Hospital/Fujian Medical University Cancer Hospital, Fuzhou 350014, China
关键词:
 鼻咽癌螺旋断层调强放疗兆伏级高能X线计算机体层摄影术扫描范围摆位误差
Keywords:
 nasopharyngeal carcinoma tomotherapy MV-computed tomography scan range set-up errors
分类号:
R739.62
DOI:
DOI:10.3969/j.issn.1005-202X.2018.08.002
文献标志码:
A
摘要:
 【摘 要】 目的:探讨鼻咽癌螺旋断层调强放疗中两种应用兆伏级高能X线计算机体层摄影术(MVCT)扫描范围的引导方案的可行性。 方法:选取行螺旋断层调强放疗的鼻咽癌患者20例,每例患者各扫描30次MVCT,15次扫描范围为鼻咽部靶区+颈部,15次为只有鼻咽部靶区,共获600组数据,两组进行配对t检验。 结果:鼻咽部靶区+颈部的摆位误差结果在左右(X)、头脚(Y)、前后(Z)方向线性误差和绕此3个方向形成的旋转误差(U、V、W)分别为(-0.20±1.15) mm、(-0.01±1.60) mm、(0.02±0.83) mm、(-0.31±0.80)°、(0.27±0.80)°、(-0.06±0.58)°;鼻咽部靶区摆位误差结果分别为(-0.21±1.39)mm、(-0.13±1.85) mm、(-0.02±1.14) mm、(-0.05±0.89)°、(0.18±0.89)°、(-0.18±0.63)°。两组在上述6个方向上的比较,P值分别为0.92、0.19、0.59、0.00、0.11、0.02,结果显示X、Y、Z、V方向上P值大于0.05,无统计学意义;U、W方向上P值小于0.05,有统计学意义。 结论:两种扫描范围在鼻咽癌螺旋断层调强放疗中线性误差无统计学意义,可以采用只扫描鼻咽部靶区的方式进行图像引导放疗,节约治疗时间和减少患者不必要的辐射。
Abstract:
 Abstract: Objective To explore the application of two scan ranges of MV-computed tomography (MVCT) in tomotherapy of nasopharyngeal carcinoma (NPC). Methods Twenty patients receiving tomotherapy for NPC were selected. Each patient was scanned by MVCT for 30 times, including 15 times of nasopharyngeal target area + neck and 15 of only nasopharyngeal target area. A total of 600 groups of data were obtained, and paired t test was conducted on the two groups. Results For the scan range of nasopharyngeal target area+neck, the linear errors in left-right (X), head-foot (Y) and front-back (Z) directions were (-0.20±1.15), (-0.01±1.60) and (0.02±0.83) mm, respectively, and the rotational errors that revolved around the 3 axes (U, V, W) were (-0.31±0.80)°, (0.27±0.80)° and (-0.06±0.58)°, respectively. For the scan range of only nasopharyngeal target area, the linear errors in X, Y and Z directions were (-0.21±1.39), (-0.13±1.85) and (-0.02±1.14) mm, respectively, and the corresponding rotational errors were (-0.05±0.89)°, (0.18±0.89)°and (-0.18±0.63)°, respectively. The comparison of differences in set-up errors between the two groups showed that P values in 6 directions (X, Y, Z, U, V and W) were 0.92, 0.19, 0.59, 0.00, 0.18 and 0.02, respectively. The statistical differences were found in U and W directions (P<0.05), but not in the other directions (P>0.05). Conclusion The two MVCT scan ranges in tomotherapy of NPC don’t show any statistical significance in linear errors. Therefore, the scan ranges of only nasopharyngeal target area can be applied for image-guided radiotherapy to shorten treatment time and reduce unnecessary radiation.

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备注/Memo

备注/Memo:
 【收稿日期】2018-02-11
【基金项目】国家临床重点专科建设项目;福建省自然科学基金(2015Y0010);福建省临床重点专科建设项目
【作者简介】杨海松,主管技师,研究方向:肿瘤放射治疗技术,E-mail: 158194167@qq.com
更新日期/Last Update: 2018-07-26