Method of reconstructing a computed tomographic image from a sin

Details Method of reconstructing a computed tomographic image from a sin Method of reconstructing a computed tomographic image from a sin

1980-09-12

1983-11-29

Chin, Gary

Boots, shoes, and leggings

378901, G06F 1542

Patent

active

044183879

ABSTRACT:
A method of reconstructing a computed tomographic image comprising projecting X-rays through material to be tested at a plurality of spaced positions, and measuring the X-ray density values of the X-rays projected through the material along the distribution of projected X-rays. The spaced positions at which the X-ray density values are measured are selected such that the tomographic plane of the material to be reconstructed is represented by a pseudo-tomographic plane comprised of an array of n rows of m columns of picture elements, each having a single piece of X-ray density information, and such that each X-ray beam passes through the lower left corner of a corresponding picture element. The X-ray absorption coefficient for each picture element is calculated from the measured values of X-ray density, and the computed tomographic image is reconstructed by positioning picture elements having the computed X-ray absorption coefficients in an array corresponding to the array in the pseudo-tomographic plane.

REFERENCES:
patent: 4064393 (1977-12-01), Pasedach et al.
patent: 4189775 (1980-02-01), Inouye et al.
patent: 4205375 (1980-05-01), Inouye et al.
patent: 4219876 (1980-08-01), Mizutani et al.
patent: 4274140 (1981-06-01), Watson
patent: 4275444 (1981-06-01), Ryan

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