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Schlattl, H. ; Zankl, M. ; Becker, J. ; Hoeschen, C.

Dose conversion coefficients for paediatric CT examinations with automatic tube current modulation.

Phys. Med. Biol. 57, 6309-6326 (2012)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
A common dose-saving technique used in modern CT devices is automatic tube current modulation (TCM), which was originally designed to also reduce the dose in paediatric CT patients. In order to be able to deduce detailed organ doses of paediatric models, dose conversion coefficients normalized to CTDI(vol) for an eight-week-old baby and seven- and eight-year-old children have been computed accounting for TCM. The relative difference in organ dose conversion coefficients with and without TCM is for many organs and examinations less than 10%, but can in some cases amount up to 30%, e.g., for the thyroid in the chest CT of the seven-year-old child. Overall, the impact of TCM on the conversion coefficients increases with increasing age. Besides TCM, also the effect of collimation and tube voltage on organ dose conversion coefficients has been investigated. It could be shown that the normalization to CTDI(vol) leads to conversion coefficients that can in most cases be considered to be independent of collimation and tube voltage.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter automatic tube ccurrent moddulation; paediatric CT; organ doses; dose conversion coefficients; HELICAL CT; COMPUTED-TOMOGRAPHY; PHANTOMS; SPECTRA; PROGRAM; SCANS; BODY
Sprache englisch
Veröffentlichungsjahr 2012
HGF-Berichtsjahr 2012
ISSN (print) / ISBN 0031-9155
e-ISSN 1361-6560
Zeitschrift Physics in Medicine and Biology
Quellenangaben Band: 57, Heft: 20, Seiten: 6309-6326 Artikelnummer: , Supplement: ,
Verlag Institute of Physics Publishing (IOP)
Verlagsort Bristol
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit Medical Radiation Physics and Diagnostics (AMSD)
POF Topic(s) 30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Forschungsfeld(er) Radiation Sciences
PSP-Element(e) G-503600-002
PubMed ID 22990300
DOI 10.1088/0031-9155/57/20/6309
WOS ID WOS:000309549600002
Scopus ID 84867245678
Erfassungsdatum 2012-10-23
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