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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
Author(s): Christoph Luckner; Frank Schebesch; Thomas Mertelmeier; Andreas Fieselmann; Andreas Maier; Ludwig Ritschl
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Paper 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

Paper Details

Date Published: 6 July 2018
PDF: 8 pages
Proc. SPIE 10718, 14th International Workshop on Breast Imaging (IWBI 2018), 107181R (6 July 2018); doi: 10.1117/12.2318099
Show Author Affiliations
Christoph Luckner, Siemens Healthcare GmbH (Germany)
Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Frank Schebesch, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Thomas Mertelmeier, Siemens Healthcare GmbH (Germany)
Andreas Fieselmann, Siemens Healthcare GmbH (Germany)
Andreas Maier, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Ludwig Ritschl, Siemens Healthcare GmbH (Germany)

Published in SPIE Proceedings Vol. 10718:
14th International Workshop on Breast Imaging (IWBI 2018)
Elizabeth A. Krupinski, Editor(s)

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