Task-based performance analysis of SART for digital breast tomosynthesis using signal CNR and channelised Hotelling observers

Dominique Van de Sompel; Michael Brady; Candy P. S. Ho; Andrew McLennan

doi:10.1117/12.844554

18 March 2010 Task-based performance analysis of SART for digital breast tomosynthesis using signal CNR and channelised Hotelling observers

Dominique Van de Sompel, Michael Brady, Candy P. S. Ho, Andrew McLennan

Author Affiliations +

Proceedings Volume 7622, Medical Imaging 2010: Physics of Medical Imaging; 762211 (2010) https://doi.org/10.1117/12.844554
Event: SPIE Medical Imaging, 2010, San Diego, California, United States

Abstract

In this study, we examine the performance of the simultaneous algebraic reconstruction technique (SART) for digital breast tomosynthesis under variations in key imaging parameters, such as the number of iterations, number of projections, angular range, initial guess, radiation dose, etc. We use a real breast CT volume as a ground truth digital phantom from which to simulate x-ray projections under the various selected conditions. The reconstructed image quality is measured using task-based metrics, namely signal CNR and the AUC of a Channelised Hotelling Observer with Laguerre-Gauss basis functions. The task at hand is a signal-known-exactly (SKE) task, where the objective is to detect a simulated mass inserted into the breast CT volume.

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Dominique Van de Sompel, Michael Brady, Candy P. S. Ho, and Andrew McLennan "Task-based performance analysis of SART for digital breast tomosynthesis using signal CNR and channelised Hotelling observers", Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 762211 (18 March 2010); https://doi.org/10.1117/12.844554

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