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arXiv · 1912.01058

Nonnegative Gaussian process tomography for generalized segmented planar detectors

D. Blyth·N. Mullins·E. Galyaev·J. Holmes
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Abstract

The concept of Gaussian process tomography along with nonnegative constraints is applied in the context of high-resolution image reconstruction using segmented planar detectors with few readout channels.Expanding on the concept of 2-D projections onto strip-like readout segmentations, 3-D projections as well as more generalized detector segmentation and readout channel mappings are explored. A focus is placed on reconstructing dose distributions in proton therapy pencil beam scanning, and a fast, approximate approach to applying nonnegative constraints is developed and motivated for use in proton therapy beam imaging.

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D. Blyth, N. Mullins, E. Galyaev, J. Holmes. 2019-12-02. Nonnegative Gaussian process tomography for generalized segmented planar detectors. https://doi.org/10.1088/1748-0221%2F15%2F06%2Fp06021

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