Calibration of plane parallel ionization chambers: a new service for secondary standard dosimetry laboratories?
Identifieur interne : 000012 ( Ncbi/Checkpoint ); précédent : 000011; suivant : 000013Calibration of plane parallel ionization chambers: a new service for secondary standard dosimetry laboratories?
Auteurs : M. Arib [Algérie] ; H. Chekerker ; S. Benmokhtar ; A. MeghzifeneSource :
- Medical dosimetry : official journal of the American Association of Medical Dosimetrists [ 0958-3947 ] ; 2001.
Descripteurs français
- KwdFr :
- MESH :
- normes : Calibrage, Guides de bonnes pratiques cliniques comme sujet, Laboratoires, Radiométrie.
- radiothérapie : Tumeurs.
- Humains, Informatique mathématique, Radio-isotopes du cobalt, Rayonnement ionisant, Électrons.
English descriptors
- KwdEn :
- MESH :
- chemical : Cobalt Radioisotopes.
- radiotherapy : Neoplasms.
- standards : Calibration, Laboratories, Practice Guidelines as Topic, Radiometry.
- Electrons, Humans, Mathematical Computing, Radiation, Ionizing.
Abstract
This paper presents the results of calibration of PTW Markus and NACP ionization chambers following the procedures outlined in the TRS 381 International Atomic Energy Agency code of practice. According to this dosimetry protocol, calibration of plane parallel chambers follows 2 methods. The first method uses a high-energy electron beam and consists of comparing the plane parallel chamber with a cylindrical chamber whose N(D,air) calibration factor, traceable to cobalt-60 (60Co), is known, while the second method applies to a 60Co gamma beam whose air kerma rate is known at the calibration point. As the second method is generally applied in Secondary Standard Dosimetry Laboratories, the consistency of calibrations free in-air and in a water phantom has been studied. A close agreement is shown between the 2 methods (the calibration factors differ by at most 0.98%). These results lead to the conclusion that either of the 2 calibration methods can be used, provided that the correction factors given by the TRS 381 code of practice are applied.
PubMed: 11747994
Affiliations:
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pubmed:11747994Le document en format XML
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Benmokhtar</name></author><author><name sortKey="Meghzifene, A" sort="Meghzifene, A" uniqKey="Meghzifene A" first="A" last="Meghzifene">A. Meghzifene</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2001">2001</date><idno type="RBID">pubmed:11747994</idno><idno type="pmid">11747994</idno><idno type="wicri:Area/PubMed/Corpus">000080</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000080</idno><idno type="wicri:Area/PubMed/Curation">000080</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000080</idno><idno type="wicri:Area/PubMed/Checkpoint">000080</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000080</idno><idno type="wicri:Area/Ncbi/Merge">000012</idno><idno type="wicri:Area/Ncbi/Curation">000012</idno><idno type="wicri:Area/Ncbi/Checkpoint">000012</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Calibration of plane parallel ionization chambers: a new service for secondary standard dosimetry laboratories?</title><author><name sortKey="Arib, M" sort="Arib, M" uniqKey="Arib M" first="M" last="Arib">M. Arib</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire Secondaire des Etalons en Dosimétrie Centre de Radioprotection et de Sûreté, Alger Gare Alger, Algeria. amehenna@altavista.fr</nlm:affiliation><country xml:lang="fr">Algérie</country><wicri:regionArea>Laboratoire Secondaire des Etalons en Dosimétrie Centre de Radioprotection et de Sûreté, Alger Gare Alger</wicri:regionArea><wicri:noRegion>Alger Gare Alger</wicri:noRegion></affiliation></author><author><name sortKey="Chekerker, H" sort="Chekerker, H" uniqKey="Chekerker H" first="H" last="Chekerker">H. Chekerker</name></author><author><name sortKey="Benmokhtar, S" sort="Benmokhtar, S" uniqKey="Benmokhtar S" first="S" last="Benmokhtar">S. Benmokhtar</name></author><author><name sortKey="Meghzifene, A" sort="Meghzifene, A" uniqKey="Meghzifene A" first="A" last="Meghzifene">A. Meghzifene</name></author></analytic><series><title level="j">Medical dosimetry : official journal of the American Association of Medical Dosimetrists</title><idno type="ISSN">0958-3947</idno><imprint><date when="2001" type="published">2001</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Calibration (standards)</term><term>Cobalt Radioisotopes</term><term>Electrons</term><term>Humans</term><term>Laboratories (standards)</term><term>Mathematical Computing</term><term>Neoplasms (radiotherapy)</term><term>Practice Guidelines as Topic (standards)</term><term>Radiation, Ionizing</term><term>Radiometry (standards)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Calibrage (normes)</term><term>Guides de bonnes pratiques cliniques comme sujet (normes)</term><term>Humains</term><term>Informatique mathématique</term><term>Laboratoires (normes)</term><term>Radio-isotopes du cobalt</term><term>Radiométrie (normes)</term><term>Rayonnement ionisant</term><term>Tumeurs (radiothérapie)</term><term>Électrons</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Cobalt Radioisotopes</term></keywords><keywords scheme="MESH" qualifier="normes" xml:lang="fr"><term>Calibrage</term><term>Guides de bonnes pratiques cliniques comme sujet</term><term>Laboratoires</term><term>Radiométrie</term></keywords><keywords scheme="MESH" qualifier="radiotherapy" xml:lang="en"><term>Neoplasms</term></keywords><keywords scheme="MESH" qualifier="radiothérapie" xml:lang="fr"><term>Tumeurs</term></keywords><keywords scheme="MESH" qualifier="standards" xml:lang="en"><term>Calibration</term><term>Laboratories</term><term>Practice Guidelines as Topic</term><term>Radiometry</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Electrons</term><term>Humans</term><term>Mathematical Computing</term><term>Radiation, Ionizing</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Humains</term><term>Informatique mathématique</term><term>Radio-isotopes du cobalt</term><term>Rayonnement ionisant</term><term>Électrons</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This paper presents the results of calibration of PTW Markus and NACP ionization chambers following the procedures outlined in the TRS 381 International Atomic Energy Agency code of practice. According to this dosimetry protocol, calibration of plane parallel chambers follows 2 methods. The first method uses a high-energy electron beam and consists of comparing the plane parallel chamber with a cylindrical chamber whose N(D,air) calibration factor, traceable to cobalt-60 (60Co), is known, while the second method applies to a 60Co gamma beam whose air kerma rate is known at the calibration point. As the second method is generally applied in Secondary Standard Dosimetry Laboratories, the consistency of calibrations free in-air and in a water phantom has been studied. A close agreement is shown between the 2 methods (the calibration factors differ by at most 0.98%). These results lead to the conclusion that either of the 2 calibration methods can be used, provided that the correction factors given by the TRS 381 code of practice are applied.</div></front></TEI><affiliations><list><country><li>Algérie</li></country></list><tree><noCountry><name sortKey="Benmokhtar, S" sort="Benmokhtar, S" uniqKey="Benmokhtar S" first="S" last="Benmokhtar">S. Benmokhtar</name><name sortKey="Chekerker, H" sort="Chekerker, H" uniqKey="Chekerker H" first="H" last="Chekerker">H. Chekerker</name><name sortKey="Meghzifene, A" sort="Meghzifene, A" uniqKey="Meghzifene A" first="A" last="Meghzifene">A. Meghzifene</name></noCountry><country name="Algérie"><noRegion><name sortKey="Arib, M" sort="Arib, M" uniqKey="Arib M" first="M" last="Arib">M. Arib</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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