A second pass correction method for calcification artifacts in digital breast tomosynthesis

Klaus Erhard; Michael Grass; Tim Nielsen

doi:10.1117/12.877949

16 March 2011 A second pass correction method for calcification artifacts in digital breast tomosynthesis

Klaus Erhard, Michael Grass, Tim Nielsen

Proceedings Volume 7961, Medical Imaging 2011: Physics of Medical Imaging; 796119 (2011) https://doi.org/10.1117/12.877949
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

Digital breast tomosynthesis (DBT) allows a quasi-3D reconstruction of the breast with high in-plane and poor depth resolution by the principles of limited angle tomography. The limited angular range and the coarse angular sampling result in prominent streak artifacts arising from high-contrast structures such as calcifications. These artifacts do not only degrade the image quality but also hold the risk of overlaying suspicious tissue structure in neighbouring slices, which might therefore be overlooked. This work presents a second pass method for correcting these kinds of high-contrast streak artifacts. In a first pass reconstruction the candidate highcontrast calcifications are segmented and subtracted from the original projection data to generate a subsequent artifact-free second pass reconstruction. The method is demonstrated in a simulation study using software breast phantoms, which have been derived from segmented MRI data.

Citation Download Citation

Klaus Erhard, Michael Grass, and Tim Nielsen "A second pass correction method for calcification artifacts in digital breast tomosynthesis", Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 796119 (16 March 2011); https://doi.org/10.1117/12.877949

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