Towards an analytic model describing the effect of scan angle and slice thickness on the in-plane spatial resolution of calcifications in digital breast tomosynthesis

Christoph Luckner; Frank Schebesch; Thomas Mertelmeier; Andreas Fieselmann; Andreas Maier; Ludwig Ritschl

doi:10.1117/12.2318099

6 July 2018 Towards an analytic model describing the effect of scan angle and slice thickness on the in-plane spatial resolution of calcifications in digital breast tomosynthesis

Christoph Luckner, Frank Schebesch, Thomas Mertelmeier, Andreas Fieselmann, Andreas Maier, Ludwig Ritschl

Author Affiliations +

Proceedings Volume 10718, 14th International Workshop on Breast Imaging (IWBI 2018); 107181R (2018) https://doi.org/10.1117/12.2318099
Event: The Fourteenth International Workshop on Breast Imaging, 2018, Atlanta, Georgia, United States

Abstract

Digital breast tomosynthesis (DBT) is a three-dimensional (3-D) X-ray imaging modality that allows the breast to be viewed in a 3-D format, minimizing the effect of overlapping breast tissue. DBT is commonly known for its high in-plane spatial resolution allowing to detect very small structures inside the breast which makes it a powerful tool in the clinical environment. However, since DBT is a limited angle tomography, artifacts are inevitable. In this paper, we investigate the influence of the angular scanning range as well as the slice thickness, i. e. the distance between two adjacent slices, on the in-plane spatial resolution of calcifications and present an analytic model to describe the imaging process. For the validation of the analytic model, 54 datasets with varying calcification diameter, slice thickness, and angular scanning range, were used and compared to a ray-casting simulation. It could be shown that the relative mean error between the analytic model and the generated ground truth over all datatsets is ε^- = 0.0137. The results indicate that both investigated parameters affect the in-plane spatial resolutio

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Christoph Luckner, Frank Schebesch, Thomas Mertelmeier, Andreas Fieselmann, Andreas Maier, and Ludwig Ritschl "Towards an analytic model describing the effect of scan angle and slice thickness on the in-plane spatial resolution of calcifications in digital breast tomosynthesis", Proc. SPIE 10718, 14th International Workshop on Breast Imaging (IWBI 2018), 107181R (6 July 2018); https://doi.org/10.1117/12.2318099

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