Comparison between absorbed dose to water standards established by water calorimetry at the LNE-LNHB and by application of international air-kerma based protocols for kilovoltage medium energy x-rays.
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| Title: | Comparison between absorbed dose to water standards established by water calorimetry at the LNE-LNHB and by application of international air-kerma based protocols for kilovoltage medium energy x-rays. |
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| Authors: | Perichon, N.1, Rapp, B.1 benjamin.rapp@cea.fr, Denoziere, M.1, Daures, J.1, Ostrowsky, A.1, Bordy, J.-M.1 |
| Source: | Physics in Medicine & Biology. 2013, Vol. 58 Issue 9, p2787-2806. 20p. |
| Subjects: | Calorimetry, Palliative treatment, Ionization (Atomic physics), Coefficients (Statistics), X-rays |
| Abstract: | Nowadays, the absorbed dose to water for kilovoltage x-ray beams is determined from standards in terms of air-kerma by application of international dosimetry protocols. New standards in terms of absorbed dose to water has just been established for these beams at the LNE-LNHB, using water calorimetry, at a depth of 2 cm in water in accordance with protocols. The aim of this study is to compare these new standards in terms of absorbed dose to water, to the dose values calculated from the application of four international protocols based on air-kerma standards (IAEA TRS-277, AAPM TG-61, IPEMB and NCS- 10). The acceleration potentials of the six beams studied are between 80 and 300 kV with half-value layers between 3.01 mm of aluminum and 3.40 mm of copper. A difference between the two methods smaller than 2.1% was reported. The standard uncertainty of water calorimetry being below 0.8%, and the one associated with the values from protocols being around 2.5%, the results are in good agreement. The calibration coefficients of some ionization chambers in terms of absorbed dose to water, established by application of calorimetry and air-kerma based dosimetry protocols, were also compared. The best agreement with the calibration coefficients established by water calorimetry was found for those established with the AAPM TG-61 protocol. [ABSTRACT FROM AUTHOR] |
| © 2025 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 90049793 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Comparison between absorbed dose to water standards established by water calorimetry at the LNE-LNHB and by application of international air-kerma based protocols for kilovoltage medium energy x-rays. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Perichon%2C+N%2E%22">Perichon, N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rapp%2C+B%2E%22">Rapp, B.</searchLink><relatesTo>1</relatesTo><i> benjamin.rapp@cea.fr</i><br /><searchLink fieldCode="AR" term="%22Denoziere%2C+M%2E%22">Denoziere, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Daures%2C+J%2E%22">Daures, J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ostrowsky%2C+A%2E%22">Ostrowsky, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bordy%2C+J%2E-M%2E%22">Bordy, J.-M.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Physics+in+Medicine+%26+Biology%22">Physics in Medicine & Biology</searchLink>. 2013, Vol. 58 Issue 9, p2787-2806. 20p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Calorimetry%22">Calorimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Palliative+treatment%22">Palliative treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Ionization+%28Atomic+physics%29%22">Ionization (Atomic physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Coefficients+%28Statistics%29%22">Coefficients (Statistics)</searchLink><br /><searchLink fieldCode="DE" term="%22X-rays%22">X-rays</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Nowadays, the absorbed dose to water for kilovoltage x-ray beams is determined from standards in terms of air-kerma by application of international dosimetry protocols. New standards in terms of absorbed dose to water has just been established for these beams at the LNE-LNHB, using water calorimetry, at a depth of 2 cm in water in accordance with protocols. The aim of this study is to compare these new standards in terms of absorbed dose to water, to the dose values calculated from the application of four international protocols based on air-kerma standards (IAEA TRS-277, AAPM TG-61, IPEMB and NCS- 10). The acceleration potentials of the six beams studied are between 80 and 300 kV with half-value layers between 3.01 mm of aluminum and 3.40 mm of copper. A difference between the two methods smaller than 2.1% was reported. The standard uncertainty of water calorimetry being below 0.8%, and the one associated with the values from protocols being around 2.5%, the results are in good agreement. The calibration coefficients of some ionization chambers in terms of absorbed dose to water, established by application of calorimetry and air-kerma based dosimetry protocols, were also compared. The best agreement with the calibration coefficients established by water calorimetry was found for those established with the AAPM TG-61 protocol. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>© 2025 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1088/0031-9155/58/9/2787 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 20 StartPage: 2787 Subjects: – SubjectFull: Calorimetry Type: general – SubjectFull: Palliative treatment Type: general – SubjectFull: Ionization (Atomic physics) Type: general – SubjectFull: Coefficients (Statistics) Type: general – SubjectFull: X-rays Type: general Titles: – TitleFull: Comparison between absorbed dose to water standards established by water calorimetry at the LNE-LNHB and by application of international air-kerma based protocols for kilovoltage medium energy x-rays. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Perichon, N. – PersonEntity: Name: NameFull: Rapp, B. – PersonEntity: Name: NameFull: Denoziere, M. – PersonEntity: Name: NameFull: Daures, J. – PersonEntity: Name: NameFull: Ostrowsky, A. – PersonEntity: Name: NameFull: Bordy, J.-M. IsPartOfRelationships: – BibEntity: Dates: – D: 07 M: 05 Text: 2013 Type: published Y: 2013 Identifiers: – Type: issn-print Value: 00319155 Numbering: – Type: volume Value: 58 – Type: issue Value: 9 Titles: – TitleFull: Physics in Medicine & Biology Type: main |
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