Method of and apparatus for generating improved reconstruction i

Details Method of and apparatus for generating improved reconstruction i Method of and apparatus for generating improved reconstruction i

1979-04-06

1982-02-02

Krass, Errol A.

Boots, shoes, and leggings

250445T, G01N 2300

Patent

active

043143377

ABSTRACT:
The method relates to an X-ray apparatus, which by the rotary scanning with the aid of a fan-shaped radiation beam provides measuring data about the radiation attenuation in the layer of a body, from which subsequently the absorption distribution of the layer being examined is calculated. In such an apparatus it is important that the center of rotation is accurately known. If this center is not exactly known, this leads to blurring in the reconstructed image. If scanning is not performed over a full revolution, this moreover gives rise to streaking artefacts. The method proposed automatically yields the center of rotation from the measuring data, so that during the subsequent reconstruction allowance can be made for the center of rotation.

REFERENCES:
patent: 3983399 (1976-09-01), Cox, Jr. et al.
patent: 4144569 (1979-03-01), Wagner
patent: 4149081 (1979-04-01), Seppi

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