EuroSafe Imaging 2020
Performed at one institution, Not applicable, Retrospective, Quality assurance, Education and training, Technology assessment, Technical aspects, Education, CT, Paediatric, Action 3 - Image quality assessment based on clinical indications
V. G. Syrgiamiotis, D. T. makri, M. Chasiotou
Conclusion and recommendations
For ASIR from 0%-100% the average value of CTDIvol was estimated, for different age groups for the examinations under consideration. A significant reduction of dose, from 21,2 to 82,3 %, was found, according to the degree of ASIR and the protocol. For head examination, the use of 60% instead of 40% ASIR leads to an average dose reduction of 28,7%, while for chest and abdomen examinations the use of 80% instead of 60% ASIR, the average dose reduction is 22,3% and 27,3 % respectively. Regarding image quality, the opinion of the physicians was that no qualitative differences were indentified.
ASIR values in the range of 20-60% are used for most examinations . A dose reduction up to 80% may be achievable with high ASIR settings . The benefit is important for young patients , who may be at higher risk from radiation exposure , for returning patients who require frequent imaging and for low dose protocols. The whole procedure leads to the reduction of the local DRLs of the radioogical department