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Proceedings Paper

Task-based performance analysis of SART for digital breast tomosynthesis using signal CNR and channelised Hotelling observers
Author(s): Dominique Van de Sompel; Michael Brady; Candy P. S. Ho; Andrew McLennan
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Paper 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.

Paper Details

Date Published: 18 March 2010
PDF: 9 pages
Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 762211 (18 March 2010); doi: 10.1117/12.844554
Show Author Affiliations
Dominique Van de Sompel, Univ. of Oxford (United Kingdom)
Michael Brady, Univ. of Oxford (United Kingdom)
Candy P. S. Ho, Univ. of Oxford (United Kingdom)
Andrew McLennan, Univ. of Oxford (United Kingdom)

Published in SPIE Proceedings Vol. 7622:
Medical Imaging 2010: Physics of Medical Imaging
Ehsan Samei; Norbert J. Pelc, Editor(s)

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