Abstract
The complex conditions of irradiation in computed tomography (CT), involving highly-collimated X-ray beams, necessitate the use of specially- defined dose descriptors such as the computed tomography dose index (CTDI). When used in a weighted form (CTDI(w)), this concept can describe the absorbed dose from a single slice in standard head and body phantoms. The model can easily be extended to characterise patient exposure for a complete examination by means of the reference dose quantity dose-length product (DLP). Effective dose can also be estimated from DLP, when required.
Original language | English |
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Pages (from-to) | 165-172 |
Number of pages | 8 |
Journal | Applied Radiation and Isotopes |
Volume | 50 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 1999 |
Bibliographical note
Funding Information:The authors would like to thank the radiologists of the CT Working Group, G. Bongartz, S. J. Golding, A. G. Jurik and M. Leonardi, for valuable discussions. The work has been supported by the CEC Radiation Protection Programme, Contract FI4P-CT96-0050.