Differential study of intensity modulated radiation therapy(IMRT)for cervical cancer in two different radiotherapy devices
10.19745/j.1003-8868.2023183
- VernacularTitle:2种不同放疗设备在宫颈癌调强放疗中的差异研究
- Author:
Xin LI
1
;
Ji-Ping WANG
;
Jing LI
;
Min ZOU
;
Yao LIAO
;
Wen-Wu HU
Author Information
1. 宜昌市第二人民医院/三峡大学附属第二人民医院肿瘤放射治疗中心,湖北宜昌 443000
- Keywords:
cervical cancer;
intensity modulated radiation therapy;
radiotherapy equipment;
Varian Halcyon accelerator;
Elekta Synergy accelerator
- From:
Chinese Medical Equipment Journal
2023;44(9):53-58
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the differences between Elekta Synergy and Varian Halcyon accelerators in intensity modulated radiotherapy for cervical cancer.Methods Totally 60 cases of postoperative cervical cancer patients treated with radiotherapy in the radiotherapy center of some hospital from June 2021 to December 2022 were selected retrospectively,who were divided into a Halcyon group(30 cases)and a Synergy group(30 cases)according to the equipment involved.The Halcyon group with dynamic IMRT technique and the Synergy group with static IMRT technique were compared in terms of dosimetric parameters in the target area and organs at risk,gamma passing rate,setup error and treatment efficiency.SPSS 24.0 software was used for statistical analysis.Results The two groups had the dosimetric distributions meet clinical requirements.The Halcyon group behaved better than the Synergy group in target area homogeneity index,conformity index and gradient index(P＜0.001),which had lower irradiation dose in some endangered organs;the gamma passing rate was higher in the Halcyon group than that in the Synergy group(P＜0.01),while the dispersion was lower in the Halcyon group;there were no significant differences between the setup errors of the two groups in the left-right,head-foot,and up-down directions(P＞0.05);the two groups had no statistical differences in the number of monitor units(P＞0.05),while the Halcyon group had the plan execution time and total treatment time much shorter than those of the Synergy group(P＜0.001).Conclusion Halcyon accelerator gains advantages in dosimetric parameters and treatment efficiency over the traditional Synergy C-arm accelerator in intensity modulated radiotherapy for cervical cancer.[Chinese Medical Equipment Journal,2023,44(9):53-58]
