2 March 2006 Optimizing filtered backprojection reconstruction for a breast tomosynthesis prototype device
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Abstract
Digital breast tomosynthesis is a new technique intended to overcome the limitations of conventional projection mammography by reconstructing slices through the breast from projection views acquired from different angles with respect to the breast. We formulate a general theory of filtered backprojection reconstruction for linear tomosynthesis. The filtering step consists of an MTF inversion filter, a spectral filter, and a slice thickness filter. In this paper the method is applied first to simulated data to understand the basic effects of the various filtering steps. We then demonstrate the impact of the filter functions with simulated projections and with clinical data acquired with a research breast tomosynthesis system.** With this reconstruction method the image quality can be controlled regarding noise and spatial resolution. In a wide range of spatial frequencies the slice thickness can be kept constant and artifacts caused by the incompleteness of the data can be suppressed.
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Thomas Mertelmeier, Thomas Mertelmeier, Jasmina Orman, Jasmina Orman, Wolfgang Haerer, Wolfgang Haerer, Mithun K. Dudam, Mithun K. Dudam, } "Optimizing filtered backprojection reconstruction for a breast tomosynthesis prototype device", Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61420F (2 March 2006); doi: 10.1117/12.651380; https://doi.org/10.1117/12.651380
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