Boots – shoes – and leggings
Patent
1983-12-07
1986-12-30
Smith, Jerry
Boots, shoes, and leggings
378901, G06F 1562
Patent
active
046333983
ABSTRACT:
Method and apparatus for quickly and efficiently producing ECT (emission computed tomography) images corrected at least in part for attenuation in which a plurality of stored attenuation coefficients are used directly in the projection and back projection operations which produce the ECT image. The evaluation of attentuation factors as needed during the course of projection and back projection avoids the need for precalculation and storage of attenuation factors, thus achieving the reasonably fast reconstruction times needed for efficient diagnostic imaging.
REFERENCES:
Gullberg, G. T. "The Attenuated Radon Transform Theory and Application in Medicine and Biology", Ph. D. Thesis, University of California, Berkeley, Jun. 1979.
Gullberg, G. T. et al. "The Use of Filtering Methods to Compensate for Constant Attenuation in Single-Photon Emission Computed Tomography", IEEE Transactions on Biomedical Engineering, vol. BME-28, No. 2, Feb. 1981, 142-157.
Budinger, T. F. et al. "Image Reconstruction from Projections. Implementation and Applications", Reprint from Topics in Applied Physics, vol. 32, Springer-Verlag; Berlin, Germany, 1979, 147-246.
Gullberg Grant T.
Pelc Norbert J.
General Electric Company
Jablon Clark A.
Smith Jerry
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