Examining wide-arc digital breast tomosynthesis: optimization using a visual-search model observer

Mini Das; Zhihua Liang; Howard C. Gifford

doi:10.1117/12.2082986

18 March 2015 Examining wide-arc digital breast tomosynthesis: optimization using a visual-search model observer

Mini Das, Zhihua Liang, Howard C. Gifford

Author Affiliations +

Proceedings Volume 9412, Medical Imaging 2015: Physics of Medical Imaging; 94121S (2015) https://doi.org/10.1117/12.2082986
Event: SPIE Medical Imaging, 2015, Orlando, Florida, United States

Abstract

Mathematical model observers are expected to assist in preclinical optimization of image acquisition and reconstruction parameters. A clinically realistic and robust model observer platform could help in multiparameter optimizations without requiring frequent human-observer validations. We are developing search-capable visual-search (VS) model observers with this potential. In this work, we present initial results on optimization of DBT scan angle and the number of projection views for low-contrast mass detection. Comparison with human-observer results shows very good agreement. These results point towards the benefits of using relatively wider arcs and low projection angles per arc degree for improved mass detection. These results are particularly interesting considering that the FDA-approved DBT systems like Hologic Selenia Dimensions uses a narrow (15-degree) acquisition arc and one projection per arc degree.

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Mini Das, Zhihua Liang, and Howard C. Gifford "Examining wide-arc digital breast tomosynthesis: optimization using a visual-search model observer", Proc. SPIE 9412, Medical Imaging 2015: Physics of Medical Imaging, 94121S (18 March 2015); https://doi.org/10.1117/12.2082986

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