[1]窦一平,Xin Zhang,Eun Young Han,等.二维电离室矩阵在放疗的质量保证体系中的应用[J].南京师范大学学报(工程技术版),2015,15(03):018.
 Dou Yiping,Xin Zhang,Eun Young Han,et al.Application of 2D Ion Chamber Array in Quality Assuranceof Radiation Therapy[J].Journal of Nanjing Normal University(Engineering and Technology),2015,15(03):018.
点击复制

二维电离室矩阵在放疗的质量保证体系中的应用
分享到:

南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
15卷
期数:
2015年03期
页码:
018
栏目:
电气与电子工程
出版日期:
2015-09-20

文章信息/Info

Title:
Application of 2D Ion Chamber Array in Quality Assuranceof Radiation Therapy
作者:
窦一平1Xin Zhang2Eun Young Han2Yulong Yan3
(1.南京师范大学电气与自动化工程学院,江苏 南京 210042)
(2.Department of Radiation Oncology,University of Arkansas for Medical Sciences,Little Rock,AR 72205)
(3.Department of Radiation Oncology,University of Texas Southwestern Medical Center,Dallas,TX 75235)
Author(s):
Dou Yiping1Xin Zhang2Eun Young Han2Yulong Yan3
(1.School of Electrical and Automation Engineering,Nanjing Normal University,Nanjing 210042,China)
(2.Department of Radiation Oncology,University of Arkansas for Medical Sciences,Little Rock,AR 72205,USA)
(3.Department of Radiation Oncology,University of Texas Southwestern Medical Center,Dallas,TX 75235,USA)
关键词:
二维电离室矩阵QA剂量图测量PTW Seven29
Keywords:
2D ion chamber arrayquality assurance(QA)dose map measurementPTW Seven29
分类号:
TH774;R815
文献标志码:
A
摘要:
肿瘤的放射治疗中,为了检测治疗设备的性能以及确保放疗计划实施的可靠性和准确性,必须具备完善的质量保证体系(Quality Assurance,QA). 本文研究将德国PTW公司研发的二维电离室矩阵Seven29应用到放疗的日常QA过程中,使用Seven29和与之配套的八角体模或平板体模来测量剂量分布图,并与治疗计划系统计算出来的剂量分布图进行比较. 对治疗设备每月的QA,最重要的项目是检测射线性能的连续性,检测方法是对连续两个月机器性能的参数进行比较. 采用PTW公司的软件VeriSoft和MultiCheck进行数据分析,经大量的实验验证和比较,结果表明二维电离室矩阵是剂量测量和分析的有效工具,其精度高、可靠性强、使用方便,是实现无胶片化和无纸化放疗体系的重要组成部分.
Abstract:
The Quality Assurance(QA)in the treatment of malignant diseases is highly required in the processes of periodical machine performance evaluation and patient-specific dose distribution verification for the safe and accurate radiation therapy. This study aims to evaluate the performance of the PTW ion chamber array Seven29 in routine QA procedures. The method for the study is to use Seven29 with the dedicated Octavius phantom and slab phantom in the dose distribution measurement for the verification of the dose map computation on the treatment planning systems. PTW software VeriSoft and MultiCheck are used for the analysis. Beam profile consistency check,one of the most important items for LINAC monthly QA,can be directly evaluated between two consecutive months. Ion chamber array has proven to be an accurate,reliable and efficient physics gadget for various dosimetry verification procedures. It is one of the essential components of a paperless and filmless radiation therapy facility.

参考文献/References:

[1]乔延伟.肿瘤精确放疗技术发展及应用现状[J].中国医疗设备,2014,29(7):73-76.

QiaoYanwei.Developmentandapplicationsituationsofpreciseaccurateradiotherapytechniquesfortumors[J].ChinaMedicalDevices,2014,29(7):73-76.(inChinese)
[2]NúriaJornet,PabloCarrasco,MercèBeltrán,etal.MulticentrevalidationofIMRTpre-treatmentverification:comparisonofin-houseandexternalaudit[J].RadiotherapyandOncology,2014,112(3):381-388.
[3]CatharineHClark,MohammadHussein,YatmanTsang,etal.Amulti-institutionaldosimetryauditofrotationalintensity-modulatedradiotherapy[J].RadiotherapyandOncology,2014,113(2):272-278.
[4]MohammadHussein,PejmanRowshanfarzad,MartinAEbert,etal.AcomparisonofthegammaindexanalysisinvariouscommercialIMRT/VMATQAsystems[J].RadiotherapyandOncology,2013,109(3):370-376.
[5]李承军,张爱华,王陆洲,等.Mapcheck的剂量学质量保证[J].中国医学物理学杂志,2010,27(3):1833-1836.
LiChengjun,ZhangAihua,WangLuzhou,etal.DosimetricqualityassuranceforMapcheck[J].ChineseJournalofMedicalPhysics,2010,27(3):1833-1836.(inChinese)
[6]孟慧鹏,孙小喆.剂量率和准直器角度对二维电离室矩阵调强验证Gamma通过率的影响[J].中国医学物理学杂志,2014,31(1):4608-4611.
MengHuipeng,SunXiaozhe.TheeffecttoGammapassratesofdoserateandcollimatorangleduringthe2DchamberarrayIMRTverification[J].ChineseJournalofMedicalPhysics,2014,31(1):4608-4611.(inChinese)
[7]GeurtsM,GonzalezJ,Serrano-OjedaP.LongitudinalstudyusingadiodephantomforhelicaltomotherapyIMRTQA[J].MedPhys,2009,36(11):4977-4983.
[8]VladimirFeygelman,KennethForster,DanielOpp,etal.Evaluationofabiplanardiodearraydosimeterforqualityassuranceofstep-and-shootIMRT[J].JApplClinMedPhys,2009,10(4):64-78.
[9]SadagopanR,BencomoJA,MartinRL,etal.CharacterizationandclinicalevaluationofanovelIMRTqualityassurancesystem[J].JApplClinMedPhys,2009,10(2):104-119.
[10]PoppeB,BlechschmidtA,DjouguelaA,etal.Two-dimensionalionizationchamberarraysforIMRTplanverification[J].MedPhys,2006,33(4):1005-1015.
[11]TiloWiezorek,NicoBanz,MichaelSchwedas,etal.Dosimetricqualityassuranceforintensity-modulatedradiotherapy[J].StrahlentherOnkol,2005(7):468-474.
[12]SpeziE,AngeliniAL,RomaniF,etal.Characterizationofa2Dionchamberarrayfortheverificationofradiotherapytreatments[J].PhysMedBiol,2005(50):3361-3373.
[13]PoppeB,DjouguelaA,BlechschmidtA,etal.Spatialresolutionof2DionizationchamberarraysforIMRTdoseverification:single-detectorsizeandsamplingstepwidth[J].PhysMedBiol,2007(52):2921-2935.
[14]DanielALow,WilliamBHarms,SasaMutic,etal.Atechniqueforthequantitativeevaluationofdosedistributions[J].MedPhys,1998,25(5):656-661.
[15]EricEKlein,JosephHanley,JohnBayouth,etal.Taskgroup142:qualityassuranceofmedicalaccelerators[J].MedPhys,2009,36(9):4197-4212.
[16]YanY,WengX,RatanatharathornV.AuniversalDICOMwizardtotackleincompatibilityproblemsintheprocessofIMRTandIGRT[J].IntJRadiationOncologyBiolPhys,2008,71(1):S657-S657.

备注/Memo

备注/Memo:
收稿日期:2014-12-13. 
基金项目:美国阿肯色大学医学院博士后研究基金(P-1-03650). 
通讯联系人:窦一平,博士,副教授,研究方向:电机、电力传动、医学物理. E-mail:douyiping@njnu.edu.cn
更新日期/Last Update: 2015-09-20