Characterization of calibration curves and energy dependence GafChromic™ XR-QA2 model based radiochromic film dosimetry system.
Identifieur interne : 002901 ( PubMed/Corpus ); précédent : 002900; suivant : 002902Characterization of calibration curves and energy dependence GafChromic™ XR-QA2 model based radiochromic film dosimetry system.
Auteurs : Nada Tomic ; Chrystian Quintero ; Bruce R. Whiting ; Saad Aldelaijan ; Hamed Bekerat ; Liheng Liang ; François Deblois ; Jan Seuntjens ; Slobodan DevicSource :
- Medical physics [ 2473-4209 ] ; 2014.
English descriptors
- KwdEn :
- MESH :
- instrumentation : Film Dosimetry.
- methods : Film Dosimetry.
- Air, Calibration, Nonlinear Dynamics, X-Ray Film.
Abstract
The authors investigated the energy response of XR-QA2 GafChromic™ film over a broad energy range used in diagnostic radiology examinations. The authors also made an assessment of the most suitable functions for both reference and relative dose measurements.
DOI: 10.1118/1.4876295
PubMed: 24877832
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pubmed:24877832Le document en format XML
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Whiting</name><affiliation><nlm:affiliation>Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213.</nlm:affiliation></affiliation></author><author><name sortKey="Aldelaijan, Saad" sort="Aldelaijan, Saad" uniqKey="Aldelaijan S" first="Saad" last="Aldelaijan">Saad Aldelaijan</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Bekerat, Hamed" sort="Bekerat, Hamed" uniqKey="Bekerat H" first="Hamed" last="Bekerat">Hamed Bekerat</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Liang, Liheng" sort="Liang, Liheng" uniqKey="Liang L" first="Liheng" last="Liang">Liheng Liang</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Deblois, Francois" sort="Deblois, Francois" uniqKey="Deblois F" first="François" last="Deblois">François Deblois</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Seuntjens, Jan" sort="Seuntjens, Jan" uniqKey="Seuntjens J" first="Jan" last="Seuntjens">Jan Seuntjens</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Devic, Slobodan" sort="Devic, Slobodan" uniqKey="Devic S" first="Slobodan" last="Devic">Slobodan Devic</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2014">2014</date><idno type="RBID">pubmed:24877832</idno><idno type="pmid">24877832</idno><idno type="doi">10.1118/1.4876295</idno><idno type="wicri:Area/PubMed/Corpus">002901</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">002901</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Characterization of calibration curves and energy dependence GafChromic™ XR-QA2 model based radiochromic film dosimetry system.</title><author><name sortKey="Tomic, Nada" sort="Tomic, Nada" uniqKey="Tomic N" first="Nada" last="Tomic">Nada Tomic</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Quintero, Chrystian" sort="Quintero, Chrystian" uniqKey="Quintero C" first="Chrystian" last="Quintero">Chrystian Quintero</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Whiting, Bruce R" sort="Whiting, Bruce R" uniqKey="Whiting B" first="Bruce R" last="Whiting">Bruce R. Whiting</name><affiliation><nlm:affiliation>Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213.</nlm:affiliation></affiliation></author><author><name sortKey="Aldelaijan, Saad" sort="Aldelaijan, Saad" uniqKey="Aldelaijan S" first="Saad" last="Aldelaijan">Saad Aldelaijan</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Bekerat, Hamed" sort="Bekerat, Hamed" uniqKey="Bekerat H" first="Hamed" last="Bekerat">Hamed Bekerat</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Liang, Liheng" sort="Liang, Liheng" uniqKey="Liang L" first="Liheng" last="Liang">Liheng Liang</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Deblois, Francois" sort="Deblois, Francois" uniqKey="Deblois F" first="François" last="Deblois">François Deblois</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Seuntjens, Jan" sort="Seuntjens, Jan" uniqKey="Seuntjens J" first="Jan" last="Seuntjens">Jan Seuntjens</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Devic, Slobodan" sort="Devic, Slobodan" uniqKey="Devic S" first="Slobodan" last="Devic">Slobodan Devic</name><affiliation><nlm:affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</nlm:affiliation></affiliation></author></analytic><series><title level="j">Medical physics</title><idno type="eISSN">2473-4209</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Air</term><term>Calibration</term><term>Film Dosimetry (instrumentation)</term><term>Film Dosimetry (methods)</term><term>Nonlinear Dynamics</term><term>X-Ray Film</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Film Dosimetry</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Film Dosimetry</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Air</term><term>Calibration</term><term>Nonlinear Dynamics</term><term>X-Ray Film</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The authors investigated the energy response of XR-QA2 GafChromic™ film over a broad energy range used in diagnostic radiology examinations. The authors also made an assessment of the most suitable functions for both reference and relative dose measurements.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">24877832</PMID><DateCreated><Year>2014</Year><Month>06</Month><Day>02</Day></DateCreated><DateCompleted><Year>2015</Year><Month>01</Month><Day>12</Day></DateCompleted><DateRevised><Year>2017</Year><Month>02</Month><Day>14</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">2473-4209</ISSN><JournalIssue CitedMedium="Internet"><Volume>41</Volume><Issue>6</Issue><PubDate><Year>2014</Year><Month>Jun</Month></PubDate></JournalIssue><Title>Medical physics</Title><ISOAbbreviation>Med Phys</ISOAbbreviation></Journal><ArticleTitle>Characterization of calibration curves and energy dependence GafChromic™ XR-QA2 model based radiochromic film dosimetry system.</ArticleTitle><Pagination><MedlinePgn>062105</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1118/1.4876295</ELocationID><Abstract><AbstractText Label="PURPOSE" NlmCategory="OBJECTIVE">The authors investigated the energy response of XR-QA2 GafChromic™ film over a broad energy range used in diagnostic radiology examinations. The authors also made an assessment of the most suitable functions for both reference and relative dose measurements.</AbstractText><AbstractText Label="METHODS" NlmCategory="METHODS">Pieces of XR-QA2 film were irradiated to nine different values of air kerma in air, following reference calibration of a number of beam qualities ranging in HVLs from 0.16 to 8.25 mm Al, which corresponds to effective energy range from 12.7 keV to 56.3 keV. For each beam quality, the authors tested three functional forms (rational, linear exponential, and power) to assess the most suitable function by fitting the delivered air kerma in air as a function of film response in terms of reflectance change. The authors also introduced and tested a new parameter χ = netΔR·e(m netΔR) that linearizes the inherently nonlinear response of the film.</AbstractText><AbstractText Label="RESULTS" NlmCategory="RESULTS">The authors have found that in the energy range investigated, the response of the XR-QA2 based radiochromic film dosimetry system ranges from 0.222 to 0.420 in terms of netΔR at K(air)(air) = 8 cGy. For beam qualities commonly used in CT scanners (4.03-8.25 mm Al), the variation in film response (netΔR at K(air)(air) = 8 cGy) amounts to ± 5%, while variation in K(air)(air) amounts to ± 14%.</AbstractText><AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">Results of our investigation revealed that the use of XR-QA2 GafChromic™ film is accompanied by a rather pronounced energy dependent response for beam qualities used for x-ray based diagnostic imaging purposes. The authors also found that the most appropriate function for the reference radiochromic film dosimetry would be the power function, while for the relative dosimetry one may use the exponential response function that can be easily linearized.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Tomic</LastName><ForeName>Nada</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Quintero</LastName><ForeName>Chrystian</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Whiting</LastName><ForeName>Bruce R</ForeName><Initials>BR</Initials><AffiliationInfo><Affiliation>Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Aldelaijan</LastName><ForeName>Saad</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bekerat</LastName><ForeName>Hamed</ForeName><Initials>H</Initials><AffiliationInfo><Affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Liang</LastName><ForeName>LiHeng</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>DeBlois</LastName><ForeName>François</ForeName><Initials>F</Initials><AffiliationInfo><Affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Seuntjens</LastName><ForeName>Jan</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Devic</LastName><ForeName>Slobodan</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Medical Physics Unit, McGill University, Montréal, Québec H3G 1A4, Canada and Department of Radiation Oncology, SMBD Jewish General Hospital, McGill University, Montréal, Québec H3T 1E2, Canada.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Med Phys</MedlineTA><NlmUniqueID>0425746</NlmUniqueID><ISSNLinking>0094-2405</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000388" MajorTopicYN="N">Air</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002138" MajorTopicYN="N">Calibration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005373" MajorTopicYN="N">Film Dosimetry</DescriptorName><QualifierName UI="Q000295" MajorTopicYN="Y">instrumentation</QualifierName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D017711" MajorTopicYN="N">Nonlinear Dynamics</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014962" MajorTopicYN="Y">X-Ray Film</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>6</Month><Day>1</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>6</Month><Day>1</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2015</Year><Month>1</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24877832</ArticleId><ArticleId IdType="doi">10.1118/1.4876295</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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