Comparative assessment of ArcCheck,Portal Dosimetry and SunCheck in dosimetric quality assurance for intensity-modulated radiotherapy
10.3969/j.issn.1005-202X.2025.08.003
- VernacularTitle:ArcCheck、Portal Dosimetry和SunCheck验证系统在放射治疗中的剂量验证对比
- Author:
Qiang ZHANG
1
;
Lei ZHANG
1
;
Yubing LIU
1
;
Yajun LIU
1
Author Information
1. 汉中市中心医院放疗科,陕西 汉中 723000
- Publication Type:Journal Article
- Keywords:
radiotherapy;
plan verification;
gamma criterion;
passing rate;
site difference
- From:
Chinese Journal of Medical Physics
2025;42(8):997-1003
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess and compare the passing rates of 3 radiotherapy dosimetric verification systems,namely Portal Dosimetry(PD),SunCheck(SNC),and ArcCheck(ARC)for different gamma criteria,and to analyze their performance across different irradiation sites.Methods A retrospective analysis was conducted on 185 radiotherapy plans,including those for head and neck,chest,and pelvic regions.The passing rates of 3 systems for different gamma criteria(3%/2 mm,3%/1 mm,2%/2 mm,and 2%/1 mm)were collected and compared across different sites.Results For the 3%/2 mm criterion,PD system had the highest passing rate across all evaluation standards,especially for the 2%/1 mm criterion,where it significantly outperformed both ARC and SNC systems.The high-resolution imaging capability of PD system enabled it to deliver exceptional performance in complex treatment plans,particularly for chest and pelvic tumors.ARC system performed well at looser criteria but showed a significant drop in passing rates with stricter gamma criteria,particularly in head and neck and complex anatomical regions.SNC system demonstrated intermediate performance,surpassing ARC under stricter criteria,while its automation and efficient processing capabilities offered a distinct advantage in high-volume clinical environments.Conclusion All 3 verification systems meet the fundamental requirements for clinical radiotherapy plan verification.However,their performance varies depending on the gamma criteria.It is recommended to select the appropriate verification system based on the complexity of the treatment plan,irradiation site,and gamma criteria.PD system is best suited for high-precision treatment areas(e.g.,chest and pelvis),whereas ARC and SNC are more suitable for routine and moderately complex treatment plans.
