Comparison study on 4D-CT and ABC techniques in respiratory management during lung radiotherapy
10.3969/j.issn.1671-8348.2013.28.001
- VernacularTitle:4D-CT与ABC技术在肺部放疗呼吸管理中的比较
- Author:
Tianxiang CUI
;
Yanmei XU
;
Yibing ZHOU
;
Jun ZHOU
;
Jianguo SUN
- Publication Type:Journal Article
- Keywords:
lung neoplasms;
radiotherapy;
active breathing control;
four-dimensional radiotherapy;
planning target volume
- From:
Chongqing Medicine
2013;(28):3337-3338,3341
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the similarities and differences between four-dimensional radiotherapy (4D-CT ) and active breathing control techniques(ABC) in respiratory management in lung radiotherapy ,and investigate the indications and feasibility of different breathing control techniques for different patients .Methods Twenty-one patients treated with lung radiotherapy received respiratory management .4D-CT technology was used in 11 patients ,while ABC technology was adopted in the rest 10 .The ratios of planning target volume(PGTV) to gross tumor volume(GTV)[(PGTV/GTV)] were calculated .The differences between these two respiratory management technologies were compared in terms of the PGTV ,positioning time ,planning time and treatment time to investigate the indications .Results 4D-CT technology had higher PGTV/GTV ratio ,and shorter positioning time and irradiation time than ABC technology(P<0 .05) ,but there was no significant difference in the planning time(P>0 .05) .In patients with ABC and 4D-CT technology ,objective response rates were 50 .0% ,45 .5% ,respectively ,and the radiation pneumonitis rates were 30 .0% ,27 .3% ,respectively .There was no significant difference in both groups (P>0 .05) .Conclusion In lung tumor radiothera-py ,ABC can reduce irradiation volume ,suitable for patients with good performance status .4D-CT is time-saving and well tolerated , suitable for patients with smaller tumors .
