Optimizing the acquisition time profile for a planar integral measurement system with a spinning slat collimator
The line-integral data model is assumed when a parallel-hole collimator is used. The planar-integral data model is assumed when a parallel-slat collimator is used.
The slat collimator spins 180° about its own axis-of-spin at each camera position.
A unit sphere representation of angular sampling. Each dot on the unit sphere represents the normal vector of a set of parallel planes whose planar integrals are measured.
The objective function value vs the number of iterations for a typical run of the simplex algorithm.
Some acquisition dwell-time profiles. The horizontal axis is the spin angle , and the vertical axis is the relative acquisition time. The optimal curves are labeled with a symbol .
SNR gains for different scanning dwell-time profiles, with the FBP algorithm.
SNR gains for different scanning dwell-time profiles, with the CG-MR algorithm.
SNR gains for different scanning dwell-time profiles, with the weighted CG-MR algorithm.
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