| HAN Jun,LI Qin,CAO Ting,et al.Set-up error of CR in total body irradiation localization and lung shielding[J].Chinese Journal of Radiological Medicine and Protection,2013,33(3):303-305 |
| Set-up error of CR in total body irradiation localization and lung shielding |
| Received:November 27, 2012 |
| DOI：10.3760/cma.j.issn.0254-5098.2013.03.021 |
| KeyWords:Computed radiography Total body irradiation Image quality Set-up error |
| FundProject: |
| Author Name | Affiliation | E-mail | | HAN Jun | Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China | | | LI Qin | Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China | lq20092wh@yahoo.com.cn | | CAO Ting | Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China | | | YANG Zhi-yong | Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China | | | LIANG Zhi-wen | Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China | | | CHEN Mi | Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China | | | WEI Li-li | Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China | |
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| Abstract:: |
| Objective To investigate the set-up error of CR in total body irradiation localization and lung shielding.Methods TOR 18FG software was employed to measure the image quality of images at kV and MV levels. The clinical processes were established and the positioning error was analyzed. Results The low contrast resolution and spatial resolution of MV level images were much worse than those at kV level in the condition of total body irradiation, but the image at MV level could be used to identify the high contrast tissues and employed in total body irradiation. The longitudinal errors were (0.50±1.65)cm for left lung and (1.16±1.56)cm for right lung in AP direction, while (1.12±2.22)cm and (0.41±2.16)cm respectively in PA direction. The errors of lateral were (0.81±1.19)cm for left lung and (0.43±1.20)cm for right lung in AP direction, while (0.31±1.64)cm and (0.55±1.49)cm respectively in PA direction.Conclusions Application of CR in total body irradiation could make positioning in treatment much easily and reduce the localization errors. |
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