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

CTDIvol: A suitable normalization for CT dose conversion coefficients at different tube voltages?

In: Proceedings (SPIE Medical Imaging 2012: Physics of Medical Imaging, 04. - 09.02.12, San Diego, USA). Bellingham, USA: SPIE, 2012.:83131P (Proc. SPIE ; 8313)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Reliable estimates for patient doses for CT examinations are desirable for the patients themselves as well as for new epidemiological studies. It has been shown that dose conversion coefficients normalized to CTDIvol provide rather scanner independent quantities. In this work, it is demonstrated that this normalization provides also tube voltage independent values by simulating axial CT scans of a seven-year old infant and an adult. The differences in the effective dose conversion coefficients per CTDIvol between 80 and 120 kV is for most body heights below 5%. Only at the height of the testes and the thyroid the difference can be as large as 15%. This results in differences of the effective dose conversion coefficient per CTDIvol between 80 and 120 kV of less than 6-7% for typical CT examinations.
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Publication type Article: Conference contribution
Editors Pelc, N.J.* ; Nishikawa, R.M.* ; Whiting, B.R.*
Keywords CTDvol; CT examinations; patient dose; conversion coefficients; effective dose
ISSN (print) / ISBN 0277-786X
e-ISSN 1996-756X
ISBN 9780819489623
Conference Title SPIE Medical Imaging 2012: Physics of Medical Imaging, 04. - 09.02.12, San Diego, USA
Proceedings Title Proceedings
Journal Proceedings of SPIE
Quellenangaben Volume: 8313, Issue: , Pages: , Article Number: 83131P Supplement: ,
Series Proceedings of SPIE
Publisher SPIE
Publishing Place Bellingham, USA
Reviewing status Peer reviewed
Institute(s) Research Unit Medical Radiation Physics and Diagnostics (AMSD)