Improved 3D reconstructions for generalized tomosynthesis

Paul F. Hemler; Stephen B. Robinson

doi:10.1117/12.479978

5 June 2003 Improved 3D reconstructions for generalized tomosynthesis

Paul F. Hemler, Stephen B. Robinson

Proceedings Volume 5030, Medical Imaging 2003: Physics of Medical Imaging; (2003) https://doi.org/10.1117/12.479978
Event: Medical Imaging 2003, 2003, San Diego, California, United States

Abstract

This paper describes a unique system for constructing a three-dimensional volume from a set of two-dimensional (2D) x-ray projection images based on optical aperture theory. This proprietary system known as Tuned-Aperture Computed Tomography (TACT) is novel in that only a small number of projections acquired from arbitrary or task-specific projection angles is required for the reconstruction process. We used TACT to reconstruct a simulated phantom from seven 2D projections made with the x-ray source positioned within 30 degrees of perpendicular to a detector array. The distance from the x-ray source was also varied to change the amount of perspective distortion in each projection. Finally, we determined the reconstruction accuracy of TACT and compared it to that of a conventional tomosynthesis system. We found the reconstructed volumetric data sets computed with TACT to be geometrically accurate and contain significantly less visible blurring than a similar data set computed with the control technique.

Citation Download Citation

Paul F. Hemler and Stephen B. Robinson "Improved 3D reconstructions for generalized tomosynthesis", Proc. SPIE 5030, Medical Imaging 2003: Physics of Medical Imaging, (5 June 2003); https://doi.org/10.1117/12.479978

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