Changes in deviation of absorbed dose to water among users by chamber calibration shift
Purpose The JSMP01 dosimetry protocol had adopted the provisional 60 Co calibration coefficient N D,w,Q 0 , namely, the product of exposure calibration coefficient N C and conversion coefficient k D,X . After that, the absorbed dose to water D w standard was established, and the JSMP12 protocol ado...
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| Veröffentlicht in: | Japanese journal of radiology 2017-07, Vol.35 (7), p.389-397 |
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| container_title | Japanese journal of radiology |
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| creator | Katayose, Tetsurou Saitoh, Hidetoshi Igari, Mitsunobu Chang, Weishan Hashimoto, Shimpei Morioka, Mie |
| description | Purpose
The JSMP01 dosimetry protocol had adopted the provisional
60
Co calibration coefficient
N
D,w,Q
0
, namely, the product of exposure calibration coefficient
N
C
and conversion coefficient
k
D,X
. After that, the absorbed dose to water
D
w
standard was established, and the JSMP12 protocol adopted the
N
D,w,Q
0
calibration. In this study, the influence of the calibration shift on the measurement of
D
w
among users was analyzed.
Materials and methods
The intercomparison of the
D
w
using an ionization chamber was annually performed by visiting related hospitals. Intercomparison results before and after the calibration shift were analyzed, the deviation of
D
w
among users was re-evaluated, and the cause of deviation was estimated.
Results
As a result, the stability of LINAC, calibration of the thermometer and barometer, and collection method of ion recombination were confirmed. The statistical significance of standard deviation of
D
w
was not observed, but that of difference of
D
w
among users was observed between
N
C
and
N
D,w,Q
0
calibration.
Conclusion
Uncertainty due to chamber-to-chamber variation was reduced by the calibration shift, consequently reducing the uncertainty among users regarding
D
w
. The result also pointed out uncertainty might be reduced by accurate and detailed instructions on the setup of an ionization chamber. |
| doi_str_mv | 10.1007/s11604-017-0644-9 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1901306886</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1916107865</sourcerecordid><originalsourceid>FETCH-LOGICAL-c414t-e4f9ba0ad124b8f1d28d086b5bd9fffecd7567b68d6f93b73701c0b92c6069f83</originalsourceid><addsrcrecordid>eNp1kE9LwzAYh4Mobk4_gBcJePFSzdtmSXqU4T8QvCh6C0mTbB1rM5NW2bc3o1NE8JSXvM_vl_AgdArkEgjhVxGAEZoR4BlhlGblHhqDYDwDIt72f2YOI3QU45IkqKD0EI1yMc0FZXyMXmcL1c5txHWLjf2oVVf7FnuHlY4-aGuw8dHizuNP1dmAVePbOe6jDRHrDa4WqtHpulKrWochHBe1647RgVOraE925wS93N48z-6zx6e7h9n1Y1ZRoF1mqSu1IspATrVwYHJhiGB6qk3pnLOV4VPGNROGubLQvOAEKqLLvGKElU4UE3Qx9K6Df-9t7GRTx8quVqq1vo8SSgIFYUKwhJ7_QZe-D236XaKAJU-CTRMFA1UFH2OwTq5D3aiwkUDk1rocrMtkXW6tyzJlznbNvW6s-Ul8a05APgAxrZLu8Ovpf1u_AMGijM0</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1916107865</pqid></control><display><type>article</type><title>Changes in deviation of absorbed dose to water among users by chamber calibration shift</title><source>MEDLINE</source><source>Springer Nature - Complete Springer Journals</source><creator>Katayose, Tetsurou ; Saitoh, Hidetoshi ; Igari, Mitsunobu ; Chang, Weishan ; Hashimoto, Shimpei ; Morioka, Mie</creator><creatorcontrib>Katayose, Tetsurou ; Saitoh, Hidetoshi ; Igari, Mitsunobu ; Chang, Weishan ; Hashimoto, Shimpei ; Morioka, Mie</creatorcontrib><description>Purpose
The JSMP01 dosimetry protocol had adopted the provisional
60
Co calibration coefficient
N
D,w,Q
0
, namely, the product of exposure calibration coefficient
N
C
and conversion coefficient
k
D,X
. After that, the absorbed dose to water
D
w
standard was established, and the JSMP12 protocol adopted the
N
D,w,Q
0
calibration. In this study, the influence of the calibration shift on the measurement of
D
w
among users was analyzed.
Materials and methods
The intercomparison of the
D
w
using an ionization chamber was annually performed by visiting related hospitals. Intercomparison results before and after the calibration shift were analyzed, the deviation of
D
w
among users was re-evaluated, and the cause of deviation was estimated.
Results
As a result, the stability of LINAC, calibration of the thermometer and barometer, and collection method of ion recombination were confirmed. The statistical significance of standard deviation of
D
w
was not observed, but that of difference of
D
w
among users was observed between
N
C
and
N
D,w,Q
0
calibration.
Conclusion
Uncertainty due to chamber-to-chamber variation was reduced by the calibration shift, consequently reducing the uncertainty among users regarding
D
w
. The result also pointed out uncertainty might be reduced by accurate and detailed instructions on the setup of an ionization chamber.</description><identifier>ISSN: 1867-1071</identifier><identifier>EISSN: 1867-108X</identifier><identifier>DOI: 10.1007/s11604-017-0644-9</identifier><identifier>PMID: 28528467</identifier><language>eng</language><publisher>Tokyo: Springer Japan</publisher><subject>Barometers ; Calibration ; Coefficients ; Dosimeters ; Dosimetry ; Imaging ; Ion recombination ; Ionization ; Ionization chambers ; Japan ; Medicine ; Medicine & Public Health ; Nuclear Medicine ; Original Article ; Radiation Dosage ; Radiology ; Radiometry - methods ; Radiotherapy ; Radiotherapy, High-Energy ; Recombination ; Uncertainty ; Water</subject><ispartof>Japanese journal of radiology, 2017-07, Vol.35 (7), p.389-397</ispartof><rights>Japan Radiological Society 2017</rights><rights>Japanese Journal of Radiology is a copyright of Springer, 2017.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c414t-e4f9ba0ad124b8f1d28d086b5bd9fffecd7567b68d6f93b73701c0b92c6069f83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11604-017-0644-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11604-017-0644-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28528467$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Katayose, Tetsurou</creatorcontrib><creatorcontrib>Saitoh, Hidetoshi</creatorcontrib><creatorcontrib>Igari, Mitsunobu</creatorcontrib><creatorcontrib>Chang, Weishan</creatorcontrib><creatorcontrib>Hashimoto, Shimpei</creatorcontrib><creatorcontrib>Morioka, Mie</creatorcontrib><title>Changes in deviation of absorbed dose to water among users by chamber calibration shift</title><title>Japanese journal of radiology</title><addtitle>Jpn J Radiol</addtitle><addtitle>Jpn J Radiol</addtitle><description>Purpose
The JSMP01 dosimetry protocol had adopted the provisional
60
Co calibration coefficient
N
D,w,Q
0
, namely, the product of exposure calibration coefficient
N
C
and conversion coefficient
k
D,X
. After that, the absorbed dose to water
D
w
standard was established, and the JSMP12 protocol adopted the
N
D,w,Q
0
calibration. In this study, the influence of the calibration shift on the measurement of
D
w
among users was analyzed.
Materials and methods
The intercomparison of the
D
w
using an ionization chamber was annually performed by visiting related hospitals. Intercomparison results before and after the calibration shift were analyzed, the deviation of
D
w
among users was re-evaluated, and the cause of deviation was estimated.
Results
As a result, the stability of LINAC, calibration of the thermometer and barometer, and collection method of ion recombination were confirmed. The statistical significance of standard deviation of
D
w
was not observed, but that of difference of
D
w
among users was observed between
N
C
and
N
D,w,Q
0
calibration.
Conclusion
Uncertainty due to chamber-to-chamber variation was reduced by the calibration shift, consequently reducing the uncertainty among users regarding
D
w
. The result also pointed out uncertainty might be reduced by accurate and detailed instructions on the setup of an ionization chamber.</description><subject>Barometers</subject><subject>Calibration</subject><subject>Coefficients</subject><subject>Dosimeters</subject><subject>Dosimetry</subject><subject>Imaging</subject><subject>Ion recombination</subject><subject>Ionization</subject><subject>Ionization chambers</subject><subject>Japan</subject><subject>Medicine</subject><subject>Medicine & Public Health</subject><subject>Nuclear Medicine</subject><subject>Original Article</subject><subject>Radiation Dosage</subject><subject>Radiology</subject><subject>Radiometry - methods</subject><subject>Radiotherapy</subject><subject>Radiotherapy, High-Energy</subject><subject>Recombination</subject><subject>Uncertainty</subject><subject>Water</subject><issn>1867-1071</issn><issn>1867-108X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><recordid>eNp1kE9LwzAYh4Mobk4_gBcJePFSzdtmSXqU4T8QvCh6C0mTbB1rM5NW2bc3o1NE8JSXvM_vl_AgdArkEgjhVxGAEZoR4BlhlGblHhqDYDwDIt72f2YOI3QU45IkqKD0EI1yMc0FZXyMXmcL1c5txHWLjf2oVVf7FnuHlY4-aGuw8dHizuNP1dmAVePbOe6jDRHrDa4WqtHpulKrWochHBe1647RgVOraE925wS93N48z-6zx6e7h9n1Y1ZRoF1mqSu1IspATrVwYHJhiGB6qk3pnLOV4VPGNROGubLQvOAEKqLLvGKElU4UE3Qx9K6Df-9t7GRTx8quVqq1vo8SSgIFYUKwhJ7_QZe-D236XaKAJU-CTRMFA1UFH2OwTq5D3aiwkUDk1rocrMtkXW6tyzJlznbNvW6s-Ul8a05APgAxrZLu8Ovpf1u_AMGijM0</recordid><startdate>20170701</startdate><enddate>20170701</enddate><creator>Katayose, Tetsurou</creator><creator>Saitoh, Hidetoshi</creator><creator>Igari, Mitsunobu</creator><creator>Chang, Weishan</creator><creator>Hashimoto, Shimpei</creator><creator>Morioka, Mie</creator><general>Springer Japan</general><general>Springer Nature B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QO</scope><scope>7RV</scope><scope>7TK</scope><scope>7U7</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M7P</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope></search><sort><creationdate>20170701</creationdate><title>Changes in deviation of absorbed dose to water among users by chamber calibration shift</title><author>Katayose, Tetsurou ; Saitoh, Hidetoshi ; Igari, Mitsunobu ; Chang, Weishan ; Hashimoto, Shimpei ; Morioka, Mie</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c414t-e4f9ba0ad124b8f1d28d086b5bd9fffecd7567b68d6f93b73701c0b92c6069f83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Barometers</topic><topic>Calibration</topic><topic>Coefficients</topic><topic>Dosimeters</topic><topic>Dosimetry</topic><topic>Imaging</topic><topic>Ion recombination</topic><topic>Ionization</topic><topic>Ionization chambers</topic><topic>Japan</topic><topic>Medicine</topic><topic>Medicine & Public Health</topic><topic>Nuclear Medicine</topic><topic>Original Article</topic><topic>Radiation Dosage</topic><topic>Radiology</topic><topic>Radiometry - methods</topic><topic>Radiotherapy</topic><topic>Radiotherapy, High-Energy</topic><topic>Recombination</topic><topic>Uncertainty</topic><topic>Water</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Katayose, Tetsurou</creatorcontrib><creatorcontrib>Saitoh, Hidetoshi</creatorcontrib><creatorcontrib>Igari, Mitsunobu</creatorcontrib><creatorcontrib>Chang, Weishan</creatorcontrib><creatorcontrib>Hashimoto, Shimpei</creatorcontrib><creatorcontrib>Morioka, Mie</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Biotechnology Research Abstracts</collection><collection>Nursing & Allied Health Database</collection><collection>Neurosciences Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>Nursing & Allied Health Premium</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><jtitle>Japanese journal of radiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Katayose, Tetsurou</au><au>Saitoh, Hidetoshi</au><au>Igari, Mitsunobu</au><au>Chang, Weishan</au><au>Hashimoto, Shimpei</au><au>Morioka, Mie</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Changes in deviation of absorbed dose to water among users by chamber calibration shift</atitle><jtitle>Japanese journal of radiology</jtitle><stitle>Jpn J Radiol</stitle><addtitle>Jpn J Radiol</addtitle><date>2017-07-01</date><risdate>2017</risdate><volume>35</volume><issue>7</issue><spage>389</spage><epage>397</epage><pages>389-397</pages><issn>1867-1071</issn><eissn>1867-108X</eissn><abstract>Purpose
The JSMP01 dosimetry protocol had adopted the provisional
60
Co calibration coefficient
N
D,w,Q
0
, namely, the product of exposure calibration coefficient
N
C
and conversion coefficient
k
D,X
. After that, the absorbed dose to water
D
w
standard was established, and the JSMP12 protocol adopted the
N
D,w,Q
0
calibration. In this study, the influence of the calibration shift on the measurement of
D
w
among users was analyzed.
Materials and methods
The intercomparison of the
D
w
using an ionization chamber was annually performed by visiting related hospitals. Intercomparison results before and after the calibration shift were analyzed, the deviation of
D
w
among users was re-evaluated, and the cause of deviation was estimated.
Results
As a result, the stability of LINAC, calibration of the thermometer and barometer, and collection method of ion recombination were confirmed. The statistical significance of standard deviation of
D
w
was not observed, but that of difference of
D
w
among users was observed between
N
C
and
N
D,w,Q
0
calibration.
Conclusion
Uncertainty due to chamber-to-chamber variation was reduced by the calibration shift, consequently reducing the uncertainty among users regarding
D
w
. The result also pointed out uncertainty might be reduced by accurate and detailed instructions on the setup of an ionization chamber.</abstract><cop>Tokyo</cop><pub>Springer Japan</pub><pmid>28528467</pmid><doi>10.1007/s11604-017-0644-9</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1867-1071 |
| ispartof | Japanese journal of radiology, 2017-07, Vol.35 (7), p.389-397 |
| issn | 1867-1071 1867-108X |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1901306886 |
| source | MEDLINE; Springer Nature - Complete Springer Journals |
| subjects | Barometers Calibration Coefficients Dosimeters Dosimetry Imaging Ion recombination Ionization Ionization chambers Japan Medicine Medicine & Public Health Nuclear Medicine Original Article Radiation Dosage Radiology Radiometry - methods Radiotherapy Radiotherapy, High-Energy Recombination Uncertainty Water |
| title | Changes in deviation of absorbed dose to water among users by chamber calibration shift |
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