中华放射肿瘤学杂志
Friday, Apr. 4, 2025   Home | Journal | Editorial | Instruction | Subscription | Advertisement | Academic | Index-in | Contact Us | Chinese
Chinese Journal of Radiation Oncology  2021, Vol. 30 Issue (7): 712-716    DOI: 10.3760/cma.j.cn113030-20191108-00456
Physics·Technique·Biology Current Issue| Next Issue| Archive| Adv Search [an error occurred while processing this directive] | [an error occurred while processing this directive]
Installation product acceptance of Varian Halcyon accelerator
Hu Qiaoqiao, Wu Hao, Jiang Fan, Wang Ruoxi, Wang Meijiao, Zhang Yibao
Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiotherapy, Peking University Cancer Hospital & Institute, Beijing 100142, China
Download: PDF (0 KB)   HTML (1 KB) 
Export: BibTeX | EndNote (RIS)      Supporting Info
Abstract  Objective To understand the components, performance, acceptance test and quality assurance (QA) protocols of the new Varian Halcyon accelerator through the procedures of installation product acceptance (IPA). Methods Per Varian IPA protocol, TG-142 for LINAC and TG-148 for tomotherapy QA protocols, the software license, safety interlock, mechanical accuracy, dosimetric performance and imager system were checked thoroughly. Some parameters were benchmarked to the conventional TrueBeam system. Results The system has been fully licensed. Safety interlock was normal. Mechanical accuracy:The maximum deviation of beam stability per gantry rotation was 1.13%. The size of isocenter was>0.59mm. The offsets of MV imager, collimation rotation and absolute gantry rotation were 0.09mm,-0.21° and 0.11°, respectively. The maximum offsets of couch, virtual-to-isocenter were 0.15mm (vertical) and -0.04mm (vertical), respectively. Beam performance:The depth deviation of maximum dose was 0.1cm. The offset of percentage depth dose at 10cm was 0.5%. The maximum deviations of off-axis-intensity, symmetry, and repeatability were 0.9%, 0.94% and -0.44%, respectively. MV imager:The dark field mean pixel value, noise, corrected pixels, defective lines, sensitivity and linearity disparity of dose were 614, 4.4, 3626, 0, 19177, and 0.47%, respectively. All values were within the range of tolerance. Visual check of contrast resolution and small object detection was all satisfactory. Conclusions Without Halcyon-specific TG report or guidelines, manufacture-provided IPA manual can be helpful with the installation of acceptance and QA protocols. IPA has been successfully performed for Halcyon at Peking University Cancer Hospital. The automated workflow improves the clinical efficiency by simplifying the operations.
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Hu Qiaoqiao
Wu Hao
Jiang Fan
Wang Ruoxi
Wang Meijiao
Zhang Yibao
Key wordsHalcyon accelerator      Installation product acceptance      Quality assurance     
Received: 08 November 2019     
Fund:National Key R&D Program of China (2019YFF01014405);National Natural Science Foundation of China (11505012);Science Foundation of Peking University Cancer Hospital (2021-1);Fundamental Research Funds for the Central Universities/Peking University Clinical Medicine Plus X-Young Scholars Project (PKU2021LCXQ027)
Corresponding Authors: Zhang Yibao, Email:zhangyibao@pku.edu.cn   
Cite this article:   
Hu Qiaoqiao,Wu Hao,Jiang Fan et al. Installation product acceptance of Varian Halcyon accelerator[J]. Chinese Journal of Radiation Oncology, 2021, 30(7): 712-716.
Hu Qiaoqiao,Wu Hao,Jiang Fan et al. Installation product acceptance of Varian Halcyon accelerator[J]. Chinese Journal of Radiation Oncology, 2021, 30(7): 712-716.
URL:  
http://journal12.magtechjournal.com/Jweb_fszlx/EN/10.3760/cma.j.cn113030-20191108-00456     OR     http://journal12.magtechjournal.com/Jweb_fszlx/EN/Y2021/V30/I7/712
  Copyright © 2010 Editorial By Chinese Journal of Radiation Oncology
Support by Beijing Magtech Co.ltd  support@magtech.com.cn