Optimization Of Short Scan Convolution Reconstruction In Fan Beam CT

Dennis L. Parker

doi:10.1117/12.934515

1 November 1982 Optimization Of Short Scan Convolution Reconstruction In Fan Beam CT

Dennis L. Parker

Proceedings Volume 0372, Physics and Engineering in Medical Imaging; (1982) https://doi.org/10.1117/12.934515
Event: International Workshop on Physics and Engineering in Medical Imaging, 1982, Pacific Grove, United States

Abstract

The problem of image reconstruction using a minimal complete set of projection measurements in conjunction with a standard divergent reconstruction algorithm is reviewed. It is shown that by optimally weighting the projection measurements, unimpaired image quality can be obtained. Boundary conditions are developed which minimize boundary discontinuities and resulting streaks in the final image. A simple application of calculus of variations is used to find a set of weights which satisfy the boundary conditions and which minimize second order changes in the weights. Image quality comparable to reconstruction from a full 360° data set is obtained using these weights.

Citation Download Citation

Dennis L. Parker "Optimization Of Short Scan Convolution Reconstruction In Fan Beam CT", Proc. SPIE 0372, Physics and Engineering in Medical Imaging, (1 November 1982); https://doi.org/10.1117/12.934515

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