ArticleProceedings of SPIE--the International Society for Optical Engineering2018
Geometric Calibration for a Next-Generation Digital Breast Tomosynthesis system Using Virtual Line Segments.
Article in Proceedings of SPIE--the International Society for Optical Engineering, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Line-based iterative geometric calibration method for a tomosynthesis system.Medical physics · 2024Article
- Non-Isocentric Geometry for Next-Generation Tomosynthesis With Super-Resolution.IEEE transactions on medical imaging · 2024Article
- Multiclass Segmentation of Breast Tissue and Suspicious Findings: A Simulation-Based Study for the Development of Self-Steering Tomosynthesis.Tomography (Ann Arbor, Mich.) · 2023Article
- Online Calibration of a Linear Micro Tomosynthesis Scanner.Journal of imaging · 2022Article
- Online Geometric Calibration of a Hybrid CT System for Ultrahigh-Resolution Imaging.Tomography (Ann Arbor, Mich.) · 2022Article
- Development and Evaluation of the Fourier Spectral Distortion Metric.IEEE transactions on medical imaging · 2021Article
- Nonstationary model of oblique x-ray incidence in amorphous selenium detectors: II. Transfer functions.Medical physics · 2019Article
- Non-stationary model of oblique x-ray incidence in amorphous selenium detectors: I. Point spread function.Medical physics · 2019Article
- Development of a Next Generation Tomosynthesis System.Proceedings of SPIE--the International Society for Optical Engineering · 2018Article
- Achieving Isotropic Super-Resolution with a Non-Isocentric Acquisition Geometry in a Next-Generation Tomosynthesis System.Proceedings of SPIE--the International Society for Optical EngineeringArticle
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
Our next-generation tomosynthesis (NGT) system prototype introduces additional geometric movements to conventional Digital Breast Tomosynthesis (DBT) acquisition geometries, to provide isotropic super-resolution. These movements include x-ray source movement in the posteroanterior (PA) direction and detector movement in the z-direction (perpendicular to the breast support). The desired benefits of the NGT system are only achievable with precise geometric calibration. In our previous work, a geometric phantom with 24 point-like ball bearings (BB's) at four different magnifications was designed and a geometric calibration method that minimizes the difference between the projected locations and the calculated locations of BB's was tested. This study investigates a new calibration method using the same phantom, utilizing projected 2D equations of virtual line segments created by any two BB's for more precise reconstruction of the various acquisition modes of the NGT system. The geometric parameters were solved with two approaches: (1) solving each projection individually and (2) solving all projections simultaneously. Furthermore, two algorithms to compensate for any possible inaccuracy in BB locations within the phantom, presumably by less than desired manufacturing precision, were developed and compared: (1) manually identifying and removing poorly positioned BB's and (2) performing an iteration to re-calculate the BB locations. Magnification digital breast tomosynthesis was also performed to test the calibration method further. Tomographic image reconstructions successfully demonstrated isotropic super-resolution and magnified super-resolution.
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