Dose conversion coefficients for partial-fan CBCT scans

Helmut Schlattl

doi:10.1117/12.2250571

9 March 2017 Dose conversion coefficients for partial-fan CBCT scans

Helmut Schlattl

Proceedings Volume 10132, Medical Imaging 2017: Physics of Medical Imaging; 1013241 (2017) https://doi.org/10.1117/12.2250571
Event: SPIE Medical Imaging, 2017, Orlando, Florida, United States

Abstract

Due to the increasing number of cone-beam CT (CBCT) devices on the market, reliable estimates of patient doses for these imaging modality is desired. Cone-beam CT devices differ from conventional CT not only by a larger collimation but also by different recording modes. In this work, it has been investigated whether reliable patient doses can be obtained for CBCT devices in partial-fan mode using pre-computed slices. As an exemplary case, chest CBCT scans for the ICRP reference adult models has been examined. By normalizing organ doses to CTDI¹⁰⁰_w , the resulting dose conversion coefficients for CBCT could be well reproduced by precomputed slices, with a relative difference in the effective dose conversion coefficients of less than 10%.

Citation Download Citation

Helmut Schlattl "Dose conversion coefficients for partial-fan CBCT scans", Proc. SPIE 10132, Medical Imaging 2017: Physics of Medical Imaging, 1013241 (9 March 2017); https://doi.org/10.1117/12.2250571

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