Rotating projection based localizer radiograph: attenuation calculation optimization and patient automatic centering with parallel-beam projection scheme

Xiaolu Cai; Yougu Yang; Xiang Wen; Yi Tian

doi:10.1117/12.2581890

15 February 2021 Rotating projection based localizer radiograph: attenuation calculation optimization and patient automatic centering with parallel-beam projection scheme

Xiaolu Cai, Yougu Yang, Xiang Wen, Yi Tian

Author Affiliations +

Proceedings Volume 11595, Medical Imaging 2021: Physics of Medical Imaging; 115952W (2021) https://doi.org/10.1117/12.2581890
Event: SPIE Medical Imaging, 2021, Online Only

Conference Poster

Abstract

Attenuation information from Localizer Radiograph (LR) is the basis for Automatic Exposure Control. However, the total achievable dose optimization could be significantly affected by either LR based attenuation calculation or patient positioning. To avoid those aspects, we proposed an integrated procedure for more robust and accurate attenuation calculation as well as possible automatic patient centering combined with the Rotating Projection base Localizer Radiograph (RPLR). A 3D attenuation map with more accurate attenuation information and automatic patient centering can be realized with one pre-view scan, so that a complete automatic workflow with always optimized dose modulation can be enabled.

Conference Presentation

Citation Download Citation

Xiaolu Cai, Yougu Yang, Xiang Wen, and Yi Tian "Rotating projection based localizer radiograph: attenuation calculation optimization and patient automatic centering with parallel-beam projection scheme", Proc. SPIE 11595, Medical Imaging 2021: Physics of Medical Imaging, 115952W (15 February 2021); https://doi.org/10.1117/12.2581890

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