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AWT IMAGE

AWT IMAGE

:: Volume 16, Issue 3 (7-2018) ::
Int J Radiat Res 2018, 16(3): 389-394 Back to browse issues page
Measurement of ipsilateral lung and heart dose in radiotherapy of left sided mastectomy patients in common different clinical techniques: A phantom study
M.B. Tavakoli , H. Taheri , A. Akhavan
Medical Physics Department, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran , h.taheri@resident.mui.ac.ir
Abstract:   (4894 Views)
Background: The aim of this study was to compare the radiation dose to ipsilateral lung and heart for different radiotherapy (RT) techniques including; two tangential photon beams, electron therapy and combined photon-electron. Materials and Methods: Treatment planning of the mentioned techniques on the CT images of a chest phantom was done using treatment planning system (TiGRT, Lina Tech, China). According to the plans, the phantom was irradiated with 6 MV photon and 10 MeV electron beams of Siemens Primus linac. Radiation dose was also measured using LiF Thermo Luminescence Dosimeter (TLD) which was placed inside 3 mm depth holes of ipsilateral lung and heart on the phantom. Results: The mean (± SD) radiation dose to the ipsilateral lung of the combined photon-electron was 66.12 ± 5.16% of prescribed dose. Whereas for the heart, it was 64.05 ± 2.62%. Mean (± SD) dose of ipsilateral lung and heart for electron irradiation was 54.51 ± 3.88 % and 34.21 ± 3.41%, respectively. The mean (± SD) radiation dose to ipsilateral lung and heart of the tangential was 50.73 ± 3.01 % and 31.36 ± 3.13%, respectively. The mean (± SD) radiation dose to the chest wall-lung interface for electron therapy (72.44 ± 2.01 %) was significantly different in comparison with tangential (65.23± 4.20%; p = 0.045) and combined photon-electron (68.14± 3.53 %; p = 0.032). Conclusion: Tangential beams is more suitable for treating mastectomy patients compared to the other techniques such as electron therapy and combined photon-electron, due to lower radiation dose to patient's ipsilateral lung and heart.
Keywords: Electron beam radiation therapy, combined photon-electron beams, radiation imposed lung and heart dose, mastectomy patients, breast cancer, tangential beams.
Full-Text [PDF 658 kb]   (1074 Downloads)    
Type of Study: Technical Note | Subject: Radiation Biology
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Tavakoli M, Taheri H, Akhavan A. Measurement of ipsilateral lung and heart dose in radiotherapy of left sided mastectomy patients in common different clinical techniques: A phantom study . Int J Radiat Res 2018; 16 (3) :389-394
URL: http://ijrr.com/article-1-2287-en.html


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Volume 16, Issue 3 (7-2018) Back to browse issues page
International Journal of Radiation Research
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