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Article: Radiation dose and cancer risk from pediatric CT examinations on 64-slice CT: A phantom study

TitleRadiation dose and cancer risk from pediatric CT examinations on 64-slice CT: A phantom study
Authors
KeywordsCancer risk
Pediatric CT
Radiation dose
Issue Date2010
PublisherElsevier Ireland Ltd. The Journal's web site is located at http://www.elsevier.com/locate/ejrad
Citation
European Journal Of Radiology, 2010, v. 76 n. 2, p. e19-e23 How to Cite?
AbstractObjective: To measure the radiation dose from CT scans in an anthropomorphic phantom using a 64-slice MDCT, and to estimate the associated cancer risk. Materials and methods: Organ doses were measured with a 5-year-old phantom and thermoluminescent dosimeters. Four protocols; head CT, thorax CT, abdomen CT and pelvis CT were studied. Cancer risks, in the form of lifetime attributable risk (LAR) of cancer incidence, were estimated by linear extrapolation using the organ radiation doses and the LAR data. Results: The effective doses for head, thorax, abdomen and pelvis CT, were 0.7 mSv, 3.5 mSv, 3.0 mSv, 1.3 mSv respectively. The organs with the highest dose were; for head CT, salivary gland (22.33 mGy); for thorax CT, breast (7.89 mGy); for abdomen CT, colon (6.62 mGy); for pelvis CT, bladder (4.28 mGy). The corresponding LARs for boys and girls were 0.015-0.053% and 0.034-0.155% respectively. The organs with highest LARs were; for head CT, thyroid gland (0.003% for boys, 0.015% for girls); for thorax CT, lung for boys (0.014%) and breast for girls (0.069%); for abdomen CT, colon for boys (0.017%) and lung for girls (0.016%); for pelvis CT, bladder for both boys and girls (0.008%). Conclusion: The effective doses from these common pediatric CT examinations ranged from 0.7 mSv to 3.5 mSv and the associated lifetime cancer risks were found to be up to 0.16%, with some organs of higher radiosensitivity including breast, thyroid gland, colon and lungs. © 2010 Elsevier Ireland Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/123973
ISSN
2015 Impact Factor: 2.593
2015 SCImago Journal Rankings: 1.166
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFeng, STen_HK
dc.contributor.authorLaw, MWMen_HK
dc.contributor.authorHuang, Ben_HK
dc.contributor.authorNg, Sen_HK
dc.contributor.authorLi, ZPen_HK
dc.contributor.authorMeng, QFen_HK
dc.contributor.authorKhong, PLen_HK
dc.date.accessioned2010-10-13T08:46:25Z-
dc.date.available2010-10-13T08:46:25Z-
dc.date.issued2010en_HK
dc.identifier.citationEuropean Journal Of Radiology, 2010, v. 76 n. 2, p. e19-e23en_HK
dc.identifier.issn0720-048Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/123973-
dc.description.abstractObjective: To measure the radiation dose from CT scans in an anthropomorphic phantom using a 64-slice MDCT, and to estimate the associated cancer risk. Materials and methods: Organ doses were measured with a 5-year-old phantom and thermoluminescent dosimeters. Four protocols; head CT, thorax CT, abdomen CT and pelvis CT were studied. Cancer risks, in the form of lifetime attributable risk (LAR) of cancer incidence, were estimated by linear extrapolation using the organ radiation doses and the LAR data. Results: The effective doses for head, thorax, abdomen and pelvis CT, were 0.7 mSv, 3.5 mSv, 3.0 mSv, 1.3 mSv respectively. The organs with the highest dose were; for head CT, salivary gland (22.33 mGy); for thorax CT, breast (7.89 mGy); for abdomen CT, colon (6.62 mGy); for pelvis CT, bladder (4.28 mGy). The corresponding LARs for boys and girls were 0.015-0.053% and 0.034-0.155% respectively. The organs with highest LARs were; for head CT, thyroid gland (0.003% for boys, 0.015% for girls); for thorax CT, lung for boys (0.014%) and breast for girls (0.069%); for abdomen CT, colon for boys (0.017%) and lung for girls (0.016%); for pelvis CT, bladder for both boys and girls (0.008%). Conclusion: The effective doses from these common pediatric CT examinations ranged from 0.7 mSv to 3.5 mSv and the associated lifetime cancer risks were found to be up to 0.16%, with some organs of higher radiosensitivity including breast, thyroid gland, colon and lungs. © 2010 Elsevier Ireland Ltd. All rights reserved.en_HK
dc.languageeng-
dc.publisherElsevier Ireland Ltd. The Journal's web site is located at http://www.elsevier.com/locate/ejraden_HK
dc.relation.ispartofEuropean Journal of Radiologyen_HK
dc.rightsEuropean Journal of Radiology. Copyright © Elsevier Ireland Ltd.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in European Journal of Radiology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in European Journal of Radiology, 2010, v. 76 n. 2, p. e19-e23. DOI: 10.1016/j.ejrad.2010.03.005-
dc.subjectCancer risken_HK
dc.subjectPediatric CTen_HK
dc.subjectRadiation doseen_HK
dc.subject.meshChina - epidemiology-
dc.subject.meshNeoplasms, Radiation-Induced - epidemiology-
dc.subject.meshRadiation Dosage-
dc.subject.meshTomography, X-Ray Computed - instrumentation - statistics and numerical data-
dc.subject.meshWhole-Body Counting - statistics and numerical data-
dc.titleRadiation dose and cancer risk from pediatric CT examinations on 64-slice CT: A phantom studyen_HK
dc.typeArticleen_HK
dc.identifier.emailKhong, PL:plkhong@hkucc.hku.hken_HK
dc.identifier.authorityKhong, PL=rp00467en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.ejrad.2010.03.005en_HK
dc.identifier.pmid20363573-
dc.identifier.scopuseid_2-s2.0-78149362368en_HK
dc.identifier.hkuros191949-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78149362368&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume76en_HK
dc.identifier.issue2en_HK
dc.identifier.spagee19en_HK
dc.identifier.epagee23en_HK
dc.identifier.isiWOS:000283838200004-
dc.publisher.placeIrelanden_HK
dc.identifier.scopusauthoridFeng, ST=15022257300en_HK
dc.identifier.scopusauthoridLaw, MWM=8663654000en_HK
dc.identifier.scopusauthoridHuang, B=36087446500en_HK
dc.identifier.scopusauthoridNg, S=26645099400en_HK
dc.identifier.scopusauthoridLi, ZP=23970816200en_HK
dc.identifier.scopusauthoridMeng, QF=8314601200en_HK
dc.identifier.scopusauthoridKhong, PL=7006693233en_HK
dc.identifier.citeulike6971912-

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