Abstract Helical Tomotherapy combines a form of intensity-modulated radiation therapy (IMRT) with the accuracy of computed tomography (CT) scanning technology in one machine. HT is one of the most advanced radiotherapy equipments at present. Considering the difference from the quality assurance of conventional linear accelerators, this guideline was proposed by National Cancer Center/National Cancer Quality Control Center, and multiple medical institutions participated in the formulation of this guideline. The guideline includes the acceptance items, operating rules and emergency plans, etc. The test methods, tolerances and frequencies of HT quality assurance are clarified. According to the actual situation of domestic medical institutions, the guideline provides recommended testing items, mainly including mechanical accuracy, dosimetric parameters, laser system, couch motion accuracy, MVCT imaging system quality control testing and clinical treatment plan verification, etc., making the guideline highly operable. This guideline can provide clinical phycicians with technical guidance on quality assurance, make quality assurance work rule-based, and improve the accuracy and precision of radiotherapy. It has instructive implications for medical institutions to establish standardized HT quality assurance system.
Corresponding Authors:
Qu Baolin, Department of Radiotherapy, First Medical Center, General Hospital of Chinese PLA,Beijing 100039,Email:qubl6212@sina.com
Cite this article:
National Cancer Center/ National Cancer Quality Control Center. Quality assurance of helical tomotherapy[J]. Chinese Journal of Radiation Oncology, 2020, 29(10): 813-821.
National Cancer Center/ National Cancer Quality Control Center. Quality assurance of helical tomotherapy[J]. Chinese Journal of Radiation Oncology, 2020, 29(10): 813-821.
[1] 卫规财发〔2004〕474号. 大型医用设备配置与使用管理办法[Z].2004-12-31. [2] 中华人民共和国卫生部令第46号. 放射诊疗管理规定[Z].2006-01-24. [3] 卫医管发[2010]4号. 医疗器械临床使用安全管理规范(试行)[Z].2010-01-04. [4] 卫规财发〔2013〕13号. 新型大型医用设备配置管理规定[Z].2013-03-13. [5] 国务院第令650号. 医疗器械监督管理条例[Z].2014-03-07. [6] 中华人民共和国国家质量监督检验检疫总局. GB/T 18987-2015放射治疗设备坐标系、运动与刻度[S].北京:中国标准出版社,2015. [7] Langen KM, Papanikolaou N, Balog J, et al. QA for helical tomotherapy:Report of the AAPM task group 148[J]. Med Phys, 2010, 37(9):4817-4853. DOI:10.1118/1.3462971. [8] Nederlandse Commissie voor Stralingsdosimetrie. Report 27 of the netherlands commission on radiation dosimetry. quality assurance for tomotherapy systems[R]. Delft:NCS, 2017. [9] Klein EE, Hanley J, Bayouth J, et al. Task group 142 report:Quality assuranceof medical accelerators[J]. Med Phys, 2009, 36(9):4197-4212. DOI:10.1118/1.3190392. [10] Thomas SD, Mackenzie M, Rogers DW, et al. A Monte Carlo derived TG-51 equivalent calibration for helical tomotherapy[J]. Med Phys, 2005, 32(5):1346-1353. DOI:10.1118/1.1897084. [11] National Commission for Radiological Protection and Measurements. NCRP report No 151. Structural shielding design and evaluation for megavoltage X-and gamma-ray radiotherapy facilities[R]. Bethesda:NCRP, 2005. [12] Balog J, Holmes T, Vaden R, et al. Helical tomotherapy dynamic quality assurance[J]. Med Phys, 2006, 33(10):3939-3950. DOI:10.1118/1.2351952. [13] Fenwick JD, Tome WA, Jaradat HA, et al. Quality assurance of a helical tomotherapy machine[J]. Phys Med Biol, 2004, 49(13):2933-2953. DOI:10.1088/0031-9155/49/13/012. [14] Nederlandse Commissie voor Stralingsdosimetrie. Quality assurance of treatment planning systems. Forthcoming report of NCS[R]. Delft:NCS, 2000.
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