Measurements of photoneutron dose rate for 15 MV photon beam from medical linear accelerator using neutron survey meter
High-energy medical linear accelerators (>10MV) are increasingly used in the medical field to treat cancer patients depending on the treatment organ and patient physic. Medical linear accelerators (Linacs) operating above 10 MV photon beam produce unwanted neutrons (photoneutron) by means of ph...
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| Format: | Article |
| Idioma: | anglès |
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Luminescience
2025
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| Matèries: | |
| Accés en línia: | https://repository.auw.edu.bd/handle/123456789/908 |
| _version_ | 1857449008002236416 |
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| author | Meaze, AKM Moinul Haque |
| author_facet | Meaze, AKM Moinul Haque |
| author_sort | Meaze, AKM Moinul Haque |
| collection | institutional Repository |
| description | High-energy medical linear accelerators (>10MV) are increasingly used in the medical field to treat cancer
patients depending on the treatment organ and patient physic. Medical linear accelerators (Linacs) operating above
10 MV photon beam produce unwanted neutrons (photoneutron) by means of photonuclear reaction (γ, n) between
bremsstrahlung photon beams and constituent materials of Linac head. This study involved the measurement of the
neutron dose rate from photon beam of medical linear accelerator (Elekta Synergy) operated at 15 MV photon. For
the measurement of dose rate, a neutron survey meter LB 6411 probe was used. Neutron dose rate was obtained as
a function of delivered dose, field size and detector position. In the study neutron dose rate was found 13.14 mSv/h
at a field size of 10 × 10 cm2
at position (0, 90, 0) cm for 350 cGy and 9.26 mSv/h at 5 × 5 cm2
field size at position
(0, 80, 0) cm for 200 cGy photon dose delivery. The dose rate varied with respect to detector position in an irregular
manner; 2.95 mSv/h at position (-100, 0, 0) cm -on the side of maze entrance and 4.85 mSv/h at position (100, 0, 0)
cm -off side of maze entrance. |
| format | Article |
| id | 123456789-908 |
| institution | Asian University for Women |
| language | English |
| publishDate | 2025 |
| publisher | Luminescience |
| record_format | dspace |
| spelling | 123456789-9082026-02-18T06:15:22Z Measurements of photoneutron dose rate for 15 MV photon beam from medical linear accelerator using neutron survey meter Meaze, AKM Moinul Haque Cancer, Radiotherapy, Medical Linac, Bremsstrahlung, Survey meter, Photoneutron, Neutron Dose Rate High-energy medical linear accelerators (>10MV) are increasingly used in the medical field to treat cancer patients depending on the treatment organ and patient physic. Medical linear accelerators (Linacs) operating above 10 MV photon beam produce unwanted neutrons (photoneutron) by means of photonuclear reaction (γ, n) between bremsstrahlung photon beams and constituent materials of Linac head. This study involved the measurement of the neutron dose rate from photon beam of medical linear accelerator (Elekta Synergy) operated at 15 MV photon. For the measurement of dose rate, a neutron survey meter LB 6411 probe was used. Neutron dose rate was obtained as a function of delivered dose, field size and detector position. In the study neutron dose rate was found 13.14 mSv/h at a field size of 10 × 10 cm2 at position (0, 90, 0) cm for 350 cGy and 9.26 mSv/h at 5 × 5 cm2 field size at position (0, 80, 0) cm for 200 cGy photon dose delivery. The dose rate varied with respect to detector position in an irregular manner; 2.95 mSv/h at position (-100, 0, 0) cm -on the side of maze entrance and 4.85 mSv/h at position (100, 0, 0) cm -off side of maze entrance. 2025-08-04T09:54:15Z 2025-08-04T09:54:15Z 2023 Article https://repository.auw.edu.bd/handle/123456789/908 en application/pdf Luminescience |
| spellingShingle | Cancer, Radiotherapy, Medical Linac, Bremsstrahlung, Survey meter, Photoneutron, Neutron Dose Rate Meaze, AKM Moinul Haque Measurements of photoneutron dose rate for 15 MV photon beam from medical linear accelerator using neutron survey meter |
| title | Measurements of photoneutron dose rate for 15 MV photon beam from medical linear accelerator using neutron survey meter |
| title_full | Measurements of photoneutron dose rate for 15 MV photon beam from medical linear accelerator using neutron survey meter |
| title_fullStr | Measurements of photoneutron dose rate for 15 MV photon beam from medical linear accelerator using neutron survey meter |
| title_full_unstemmed | Measurements of photoneutron dose rate for 15 MV photon beam from medical linear accelerator using neutron survey meter |
| title_short | Measurements of photoneutron dose rate for 15 MV photon beam from medical linear accelerator using neutron survey meter |
| title_sort | measurements of photoneutron dose rate for 15 mv photon beam from medical linear accelerator using neutron survey meter |
| topic | Cancer, Radiotherapy, Medical Linac, Bremsstrahlung, Survey meter, Photoneutron, Neutron Dose Rate |
| url | https://repository.auw.edu.bd/handle/123456789/908 |
| work_keys_str_mv | AT meazeakmmoinulhaque measurementsofphotoneutrondoseratefor15mvphotonbeamfrommedicallinearacceleratorusingneutronsurveymeter |