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IAEA/WHO postal dosimetry audit methodology for electron beams using radio photoluminescent dosimeters.

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Title: IAEA/WHO postal dosimetry audit methodology for electron beams using radio photoluminescent dosimeters.
Authors: Dimitriadis, Alexis1 (AUTHOR) al.dimitriadis@iaea.org, Kazantsev, Pavel1 (AUTHOR), Chelminski, Krzysztof1 (AUTHOR), Titovich, Egor1 (AUTHOR), Naida, Ekaterina1 (AUTHOR), Magnus, Talent1 (AUTHOR), Meghzifene, Ahmed1 (AUTHOR), Azangwe, Godfrey1 (AUTHOR), Carrara, Mauro1 (AUTHOR), Swamidas, Jamema1 (AUTHOR)
Source: Medical Physics. Nov2023, Vol. 50 Issue 11, p7214-7221. 8p.
Subjects: International Atomic Energy Agency, Medical dosimetry, Dosimeters, Photon beams, Auditing, Electron beams, Correction factors, Quality assurance
Abstract: Background: Independent dosimetry audits are an important intervention in radiotherapy for quality assurance. Electron beams, used for superficial radiotherapy treatments, must also be tested in dosimetry audits as part of a good quality assurance program to help prevent clinical errors. Purpose: To establish a new service for IAEA/WHO postal dosimetry audits in electron beams using RPL dosimeters. Methods: A novel postal audit methodology employing a PMMA holder system for RPLDs was developed. The associated correction factors including holder dependence, energy dependence, dose response non‐linearity, and fading were obtained and tested in a multi‐center (n = 12) pilot study. A measurement uncertainty budget was estimated and employed in analyzing the irradiated dosimeters. Results: Holder and energy correction factors ranged from 1.004 to 1.010 and 1.019 to 1.059 respectively across the energy range. The non‐linearity and fading correction models used for photon beams were tested in electron beams and did not significantly increase measurement uncertainty. The mean dose ratio ± SD of the multi‐center study was 1.001 ± 0.011. The overall uncertainty budget was estimated as ± 1.42% (k = 1). Conclusions: A methodology for IAEA/WHO postal dosimetry audits in electron beams was developed and validated in a multi‐center study and is now made available to radiotherapy centers as a routine service. [ABSTRACT FROM AUTHOR]
Copyright of Medical Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: IAEA/WHO postal dosimetry audit methodology for electron beams using radio photoluminescent dosimeters.
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  Data: <searchLink fieldCode="AR" term="%22Dimitriadis%2C+Alexis%22">Dimitriadis, Alexis</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> al.dimitriadis@iaea.org</i><br /><searchLink fieldCode="AR" term="%22Kazantsev%2C+Pavel%22">Kazantsev, Pavel</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chelminski%2C+Krzysztof%22">Chelminski, Krzysztof</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Titovich%2C+Egor%22">Titovich, Egor</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Naida%2C+Ekaterina%22">Naida, Ekaterina</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Magnus%2C+Talent%22">Magnus, Talent</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Meghzifene%2C+Ahmed%22">Meghzifene, Ahmed</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Azangwe%2C+Godfrey%22">Azangwe, Godfrey</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Carrara%2C+Mauro%22">Carrara, Mauro</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Swamidas%2C+Jamema%22">Swamidas, Jamema</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Medical+Physics%22">Medical Physics</searchLink>. Nov2023, Vol. 50 Issue 11, p7214-7221. 8p.
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  Data: <searchLink fieldCode="DE" term="%22International+Atomic+Energy+Agency%22">International Atomic Energy Agency</searchLink><br /><searchLink fieldCode="DE" term="%22Medical+dosimetry%22">Medical dosimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Dosimeters%22">Dosimeters</searchLink><br /><searchLink fieldCode="DE" term="%22Photon+beams%22">Photon beams</searchLink><br /><searchLink fieldCode="DE" term="%22Auditing%22">Auditing</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+beams%22">Electron beams</searchLink><br /><searchLink fieldCode="DE" term="%22Correction+factors%22">Correction factors</searchLink><br /><searchLink fieldCode="DE" term="%22Quality+assurance%22">Quality assurance</searchLink>
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  Data: Background: Independent dosimetry audits are an important intervention in radiotherapy for quality assurance. Electron beams, used for superficial radiotherapy treatments, must also be tested in dosimetry audits as part of a good quality assurance program to help prevent clinical errors. Purpose: To establish a new service for IAEA/WHO postal dosimetry audits in electron beams using RPL dosimeters. Methods: A novel postal audit methodology employing a PMMA holder system for RPLDs was developed. The associated correction factors including holder dependence, energy dependence, dose response non‐linearity, and fading were obtained and tested in a multi‐center (n = 12) pilot study. A measurement uncertainty budget was estimated and employed in analyzing the irradiated dosimeters. Results: Holder and energy correction factors ranged from 1.004 to 1.010 and 1.019 to 1.059 respectively across the energy range. The non‐linearity and fading correction models used for photon beams were tested in electron beams and did not significantly increase measurement uncertainty. The mean dose ratio ± SD of the multi‐center study was 1.001 ± 0.011. The overall uncertainty budget was estimated as ± 1.42% (k = 1). Conclusions: A methodology for IAEA/WHO postal dosimetry audits in electron beams was developed and validated in a multi‐center study and is now made available to radiotherapy centers as a routine service. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Medical Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/mp.16776
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        Text: English
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        PageCount: 8
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      – SubjectFull: International Atomic Energy Agency
        Type: general
      – SubjectFull: Medical dosimetry
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      – SubjectFull: Dosimeters
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      – SubjectFull: Photon beams
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              Text: Nov2023
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