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Behmadi, M, Gholamhosseinian, H, Mohammadi, M, Naseri, Sh, Momennezhad, M, Bayani, Sh, Bahreyni Toossi, M T. (1398). Evaluation of Breast Cancer Radiation Therapy Techniques in Outfield Organs of Rando Phantom with Thermoluminescence Dosimeter. سامانه مدیریت نشریات علمی, 9(2), 179-188. doi: 10.31661/jbpe.v0i0.1067
M Behmadi; H Gholamhosseinian; M Mohammadi; Sh Naseri; M Momennezhad; Sh Bayani; M T Bahreyni Toossi. "Evaluation of Breast Cancer Radiation Therapy Techniques in Outfield Organs of Rando Phantom with Thermoluminescence Dosimeter". سامانه مدیریت نشریات علمی, 9, 2, 1398, 179-188. doi: 10.31661/jbpe.v0i0.1067
Behmadi, M, Gholamhosseinian, H, Mohammadi, M, Naseri, Sh, Momennezhad, M, Bayani, Sh, Bahreyni Toossi, M T. (1398). 'Evaluation of Breast Cancer Radiation Therapy Techniques in Outfield Organs of Rando Phantom with Thermoluminescence Dosimeter', سامانه مدیریت نشریات علمی, 9(2), pp. 179-188. doi: 10.31661/jbpe.v0i0.1067
Behmadi, M, Gholamhosseinian, H, Mohammadi, M, Naseri, Sh, Momennezhad, M, Bayani, Sh, Bahreyni Toossi, M T. Evaluation of Breast Cancer Radiation Therapy Techniques in Outfield Organs of Rando Phantom with Thermoluminescence Dosimeter. سامانه مدیریت نشریات علمی, 1398; 9(2): 179-188. doi: 10.31661/jbpe.v0i0.1067

Evaluation of Breast Cancer Radiation Therapy Techniques in Outfield Organs of Rando Phantom with Thermoluminescence Dosimeter

Journal of Biomedical Physics and Engineering
مقاله 6، دوره 9، شماره 2، خرداد و تیر 2019، صفحه 179-188    اصل مقاله (865.57 K)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.1067
نویسندگان
M Behmadi1؛ H Gholamhosseinian2؛ M Mohammadi3؛ Sh Naseri2؛ M Momennezhad3؛ Sh Bayani1؛ M T Bahreyni Toossi* 2
1Department of Medical Physics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
2Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
3Royal Adelaide Hospital, Department of Medical Physics, Adelaide, Australia.
چکیده
Background: Given the importance of scattered and low doses in secondary cancer caused by radiation treatment, the point dose of critical organs, which were not subjected to radiation treatment in breast cancer radiotherapy, was measured.
Objective: The purpose of this study is to evaluate the peripheral dose in two techniques of breast cancer radiotherapy with two energies.
Material and Methods: Eight different plans in two techniques (conventional and conformal) and two photon energies (6 and 15 MeV) were applied to Rando Alderson Phantom’s DICOM images. Nine organs were contoured in the treatment planning system and specified on the phantom. To measure the photon dose, forty-eight thermoluminescence dosimeters (MTS700) were positioned in special places on the above nine organs and plans were applied to Rando phantom with Elekta presice linac. To obtain approximately the same dose distribution in the clinical organ volume, a wedge was used on planes with an energy of 6 MeV photon.
Results: Point doses in critical organs with 8 different plans demonstrated that scattering in low-energy photon is greater than high-energy photon. In contrast, neutron contamination in high-energy photon is not negligible. Using the wedge and shield impose greater scattering and neutron contamination on patients with low-and high-energy photon, respectively.
Conclusion: Deciding on techniques and energies required for preparing an acceptable treatment plan in terms of scattering and neutron contamination is a key issue that may affect the probability of secondary cancer in a patient.
کلیدواژه‌ها
Photon Dose Measurement؛ Radiation Therapy؛ Breast Cancer؛ Thermoluminescence Dosimeter؛ Rando Phantom
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