Limited-angle imaging using multiple energy scanning

Details Limited-angle imaging using multiple energy scanning Limited-angle imaging using multiple energy scanning

1981-11-23

1985-03-19

Krass, Errol A.

Boots, shoes, and leggings

358111, 364413, 378 5, 378901, G06F 1542, H04N 532

Patent

active

045063273

ABSTRACT:
The fidelity of limited-angle x-ray computerized tomography imaging is improved by taking multiple scans using x-ray beams at different energies. The projection data of the composite object is decomposed into the projections of the individual component substances. Reconstruction of a single substance is done more accurately than reconstructing the composite object because more a priori information about the object, such as upper and lower bounds of the densities of the substances, is available. The reconstructed images of the components are superimposed to form an image of the composite object. The method is applicable to other imaging modalities.

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Tam, K. C. et al., "Limits to Image Reconstruction from Restricted Angular Input", IEEE Transactions on Nuclear Science, NS-28, (Feb. 1981), 179-183.
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Tam, K. C. et al., "Limited-Angle Three-Dimensional Reconstructions Using Fourier Transform Iterations and Radon Transform Iterations", Optical Engineering, vol. 20, No. 4, (Jul./Aug. 1981), 586-589.
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Lent, A. et al., "An Iterative Method for the Extrapolation of Band-Limited Functions", Technical Report MIPG35, Oct. 1979, State University of New York at Buffalo.

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