[1]刘书朋,陈伟思,侯明扬,等. 电子射野影像系统在调强剂量验证中的应用[J].中国医学物理学杂志,2018,35(7):776-780.[doi:DOI:10.3969/j.issn.1005-202X.2018.07.007]
 LIU Shupeng,CHEN Weisi,HOU Mingyang,et al. Application of electronic portal imaging device in dose verification of intensity-modulated radiotherapy[J].Chinese Journal of Medical Physics,2018,35(7):776-780.[doi:DOI:10.3969/j.issn.1005-202X.2018.07.007]
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 电子射野影像系统在调强剂量验证中的应用()
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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7期
页码:
776-780
栏目:
医学放射物理
出版日期:
2018-07-20

文章信息/Info

Title:
 Application of electronic portal imaging device in dose verification of intensity-modulated radiotherapy
文章编号:
1005-202X(2018)07-0776-05
作者:
 刘书朋1陈伟思2侯明扬3程希元4陈阿龙5
 1.南方医科大学南方医院放疗科, 广东 广州 510515; 2.海南医学院第一附属医院放射物理治疗中心, 海南 海口 570102; 3.南方医科大学南方医院设备器材科, 广东 广州 510515; 4.广州南方医大医疗设备综合检测有限责任公司, 广东 广州 510515; 5.中山大学附属肿瘤医院放疗科, 广东 广州 510060
Author(s):
 LIU Shupeng1 CHEN Weisi2 HOU Mingyang3 CHENG Xiyuan4 CHEN Along5
 1. Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; 2. Center for Radiation Physics and Treatment, the First Affiliated Hospital of Hainan Medical University, Haikou 570102, China; 3. Department of Equipment, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; 4. S.M.U Medical Equipment Test Co., Ltd., Southern Medical University, Guangzhou 510515, China; 5. Department of Radiation Oncology, Cancer Center, Sun Yat-Sen University, Guangzhou 510060, China
关键词:
 调强放射治疗容积调强放射治疗电子射野影像系统RapidoseGamma通过率剂量验证
Keywords:
 Keywords: intensity-modulated radiotherapy volume modulated arc therapy electronic portal imaging device Rapidose gamma passing rate dose verification
分类号:
R815
DOI:
DOI:10.3969/j.issn.1005-202X.2018.07.007
文献标志码:
A
摘要:
 目的:使用电子射野影像系统(EPID)结合Rapidose剂量分析软件在医科达(Elekta)Synergy机器上对IMRT和VMAT计划进行剂量验证。 方法:随机选取11例IMRT计划和6例VMAT计划,依次使用EPID、MatriXX、ArcCHECK及CC13指形电离室对计划进行验证测量,并在不同Gamma标准下(5 mm,3%;3 mm,3%;2 mm,2%)比较不同工具验证的剂量通过率。 结果:IMRT计划和VMAT计划用EPID验证的Gamma通过率依次为(99.86±0.13)%和(99.77±0.21)%、(99.06±0.45)%和(97.75±1.20)%、(92.17±4.89)%和(85.91±6.82)%,用MatriXX验证的Gamma通过率为(99.47±0.95)%和(99.51±0.40)%、(98.60±1.10)%和(97.24±1.05)%、(90.56±5.07)%和(87.21±4.17)%,用ArcCHECK验证的Gamma通过率为(99.34±0.46)%和(99.93±0.08)%、(98.21±1.31)%和(98.66±0.35)%、(89.89±1.70)%和(96.03±2.90)%,用电离室CC13验证的剂量偏差为(1.10±1.84)%和(90.59±1.31)%。通过两两配对t检验比较验证结果可知,IMRT和VMAT计划用3种设备验证的测量结果均符合临床要求。 结论:使用Rapidose剂量分析软件结合EPID设备,可以在临床上满足调强计划的剂量验证要求。
Abstract:
 Abstract: Objective To explore the practicability of dose verification of intensity-modulated radiotherapy (IMRT) and volume modulated arc therapy (VMAT) on Elekta (Synergy) linear accelerator via Rapidose dose analysis software combined with electronic portal imaging device (EPID). Methods Eleven IMRT plans and 6 VMAT plans were randomly selected. The gamma passing rates of these plans were measured with different validation devices (EPID, MatriXX, ArcCHECK and CC13 ionization chamber) and compared under different gamma standards (5 mm, 3%; 3 mm, 3%; 2 mm, 2%). Results The gamma passing rates measured with EPID were (99.86±0.13)%, (99.06±0.45)%, (92.17±4.89)% for IMRT plans, and (99.77±0.21)%, (97.75±1.20)%, (85.91±6.82)% for VMAT plans. The gamma passing rates measured with MatriXX were (99.47±0.95)%, (98.60±1.10)%, (90.56±5.07)% for IMRT plans, and (99.51±0.40)%, (97.24±1.05)%, (87.21±4.17)% for VMAT plans. The gamma passing rates measured with ArcCHECK were (99.34±0.46)%, (98.21±1.31)%, (89.89±1.70)% for IMRT plans, and (99.93±0.08)%, (98.66±0.35)% and (96.03±2.90)% for VMAT plans. The dose deviation of CC13 ionization chamber was (1.10±1.84)% and (0.59±1.31)% for IMRT plans and VMAT plans, respectively. The paired-t test comparison results revealed that all measurements of the 3 devices met the clinical requirements. Conclusion EPID can be combined with Rapidose dose analysis software to meet the clinical dose verification requirements of IMRT plans and VMAT plans.

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备注/Memo

备注/Memo:
 【收稿日期】2018-01-21
【作者简介】刘书朋,硕士,助理工程师,研究方向:医学放射物理,E-mail: 357838476@qq.com
【通信作者】陈阿龙,助理研究员,研究方向:医学放射物理,E-mail: chenal@sysucc.org.cn
更新日期/Last Update: 2018-07-24