Calibration of ionization chamber in megavoltage x-ray field of medical linear accelerator
Ionization chambers were calibrated regarding absorbed dose to water in MeV X-ray fields of a medical linear accelerator, with nominal maximum energies of 6 MeV and 15 MeV. Whereas, absorbed doses to water at a depth of 10 cm below the water surface were measured using the same ionization c...
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VINCA Institute of Nuclear Sciences
2024-01-01
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| Series: | Nuclear Technology and Radiation Protection |
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| Online Access: | https://doiserbia.nb.rs/img/doi/1451-3994/2024/1451-39942403220P.pdf |
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| author | Pham Hong-Lam Hoang Thanh-Phi-Hung Sunjun Jin Bui Duy-Linh Nguyen Tuan-Khai Bui Van-Loat Le Tuan-Anh Nguyen Huu-Quyet Pham Duc-Khue Phan Viet-Cuong Phan Tien-Dung Pham Quang-Trung Tran Hoai-Nam Le Ngoc-Thiem |
| author_facet | Pham Hong-Lam Hoang Thanh-Phi-Hung Sunjun Jin Bui Duy-Linh Nguyen Tuan-Khai Bui Van-Loat Le Tuan-Anh Nguyen Huu-Quyet Pham Duc-Khue Phan Viet-Cuong Phan Tien-Dung Pham Quang-Trung Tran Hoai-Nam Le Ngoc-Thiem |
| author_sort | Pham Hong-Lam |
| collection | DOAJ |
| description | Ionization chambers were calibrated regarding absorbed dose to water in MeV
X-ray fields of a medical linear accelerator, with nominal maximum energies
of 6 MeV and 15 MeV. Whereas, absorbed doses to water at a depth of 10 cm
below the water surface were measured using the same ionization chamber
(referred to as IC-1) in two different manners (i.e., applying the old beam
quality correction factor kQ0 from the old IAEA/TRS-398 protocol, referred to
as D1-old10 and using the new one, kQ from the updated protocol, referred
to as D1-new10. The calibration factors of IC-1, ND1,D,w, Q were
deduced (for beam qualities Q of MeV X-ray fields with maximum energies of 6
MeV and 15 MeV). The identical procedure was applied to two other ionization
chambers (IC-i, i=2,3) to obtain absorbed doses to water at a depth of 10
cm (referred to as Di-new10) using the new beam quality correction factor.
A comparison between D1-new10 and Di-new10 was conducted to derive the
calibration factors of the IC-i, NiD,w,Q. The combined
standard uncertainties of NiD,w,Q (i =1,2,3) were estimated within 1.22%
and 2.30%, respectively. |
| format | Article |
| id | doaj-art-2b64d37b90b94c7b915a7af359325990 |
| institution | Kabale University |
| issn | 1451-3994 1452-8185 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | VINCA Institute of Nuclear Sciences |
| record_format | Article |
| series | Nuclear Technology and Radiation Protection |
| spelling | doaj-art-2b64d37b90b94c7b915a7af3593259902025-01-30T06:46:08ZengVINCA Institute of Nuclear SciencesNuclear Technology and Radiation Protection1451-39941452-81852024-01-0139322022510.2298/NTRP2403220P1451-39942403220PCalibration of ionization chamber in megavoltage x-ray field of medical linear acceleratorPham Hong-Lam0https://orcid.org/0009-0009-7549-9719Hoang Thanh-Phi-Hung1https://orcid.org/0000-0002-8198-5109Sunjun Jin2https://orcid.org/0009-0003-0533-4827Bui Duy-Linh3https://orcid.org/0000-0002-4257-7065Nguyen Tuan-Khai4https://orcid.org/0000-0002-4257-7065Bui Van-Loat5https://orcid.org/0000-0002-4257-7065Le Tuan-Anh6https://orcid.org/0000-0003-0153-105XNguyen Huu-Quyet7https://orcid.org/0000-0003-0153-105XPham Duc-Khue8https://orcid.org/0000-0003-0153-105XPhan Viet-Cuong9https://orcid.org/0000-0002-5415-3104Phan Tien-Dung10https://orcid.org/0009-0004-9083-1701Pham Quang-Trung11https://orcid.org/0009-0003-4941-0836Tran Hoai-Nam12https://orcid.org/0000-0003-0747-0147Le Ngoc-Thiem13https://orcid.org/0000-0001-8837-9454Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam + 103 Military Hospital, Hanoi, VietnamInstitute of Research and Development, Duy Tan University, Da Nang, Vietnam + Faculty of Medicine, College od Medicine and Pharmacy, Duy Tan University, Da Nang, VietnamNational Institute of Metrology, Chaoyang, Beijing, ChinaVietnam Agency for Radiation and Nuclear Safety, Hanoi, VietnamVietnam Agency for Radiation and Nuclear Safety, Hanoi, VietnamFaculty of Physics, VNU - University of Science, Hanoi, VietnamInstitute for Nuclear Science and Technology, Hanoi, VietnamInstitute for Nuclear Science and Technology, Hanoi, VietnamInstitute for Nuclear Science and Technology, Hanoi, VietnamHanoi Irradiation Center, Viet Nam Atomic Energy Institute, Hanoi, VietnamVietnam Academy of Science and Technology, Hanoi, Vietnam108 Military Central Hospital, Hanoi, VietnamPhenikaa Institute for Advanced Study, Phenikaa University, Hanoi, VietnamInstitute for Nuclear Science and Technology, Hanoi, VietnamIonization chambers were calibrated regarding absorbed dose to water in MeV X-ray fields of a medical linear accelerator, with nominal maximum energies of 6 MeV and 15 MeV. Whereas, absorbed doses to water at a depth of 10 cm below the water surface were measured using the same ionization chamber (referred to as IC-1) in two different manners (i.e., applying the old beam quality correction factor kQ0 from the old IAEA/TRS-398 protocol, referred to as D1-old10 and using the new one, kQ from the updated protocol, referred to as D1-new10. The calibration factors of IC-1, ND1,D,w, Q were deduced (for beam qualities Q of MeV X-ray fields with maximum energies of 6 MeV and 15 MeV). The identical procedure was applied to two other ionization chambers (IC-i, i=2,3) to obtain absorbed doses to water at a depth of 10 cm (referred to as Di-new10) using the new beam quality correction factor. A comparison between D1-new10 and Di-new10 was conducted to derive the calibration factors of the IC-i, NiD,w,Q. The combined standard uncertainties of NiD,w,Q (i =1,2,3) were estimated within 1.22% and 2.30%, respectively.https://doiserbia.nb.rs/img/doi/1451-3994/2024/1451-39942403220P.pdfabsorbed dosebeam qualitynominal maximum energy |
| spellingShingle | Pham Hong-Lam Hoang Thanh-Phi-Hung Sunjun Jin Bui Duy-Linh Nguyen Tuan-Khai Bui Van-Loat Le Tuan-Anh Nguyen Huu-Quyet Pham Duc-Khue Phan Viet-Cuong Phan Tien-Dung Pham Quang-Trung Tran Hoai-Nam Le Ngoc-Thiem Calibration of ionization chamber in megavoltage x-ray field of medical linear accelerator Nuclear Technology and Radiation Protection absorbed dose beam quality nominal maximum energy |
| title | Calibration of ionization chamber in megavoltage x-ray field of medical linear accelerator |
| title_full | Calibration of ionization chamber in megavoltage x-ray field of medical linear accelerator |
| title_fullStr | Calibration of ionization chamber in megavoltage x-ray field of medical linear accelerator |
| title_full_unstemmed | Calibration of ionization chamber in megavoltage x-ray field of medical linear accelerator |
| title_short | Calibration of ionization chamber in megavoltage x-ray field of medical linear accelerator |
| title_sort | calibration of ionization chamber in megavoltage x ray field of medical linear accelerator |
| topic | absorbed dose beam quality nominal maximum energy |
| url | https://doiserbia.nb.rs/img/doi/1451-3994/2024/1451-39942403220P.pdf |
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