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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)
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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Publikationstyp
Artikel: Konferenzbeitrag
Herausgeber
Pelc, N.J.* ; Nishikawa, R.M.* ; Whiting, B.R.*
Schlagwörter
CTDvol; CT examinations; patient dose; conversion coefficients; effective dose
ISSN (print) / ISBN
0277-786X
e-ISSN
1996-756X
ISBN
9780819489623
Konferenztitel
SPIE Medical Imaging 2012: Physics of Medical Imaging, 04. - 09.02.12, San Diego, USA
Konferenzband
Proceedings
Zeitschrift
Proceedings of SPIE
Quellenangaben
Band: 8313,
Artikelnummer: 83131P
Reihe
Proceedings of SPIE
Verlag
SPIE
Verlagsort
Bellingham, USA
Nichtpatentliteratur
Publikationen
Begutachtungsstatus
Peer reviewed