Methods and apparatus for scanning an object in a computed tomog

Details Methods and apparatus for scanning an object in a computed tomog Methods and apparatus for scanning an object in a computed tomog

1997-06-23

1998-11-10

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 62, 378901, A61B 603

Patent

active

058355596

ABSTRACT:
The present invention, in one form, is a system for generating a high resolution image of an object from projection data acquired during a computed tomography scan. The system includes a gantry having an x-ray source which rotates around the object and emits an x-ray beam toward a detector. The system identifies a region of x-ray beam movement and divides the region into subregions. Linear Q-CAL vectors are then generated for each subregion so that each vector is representative of detector gain in one of the subregions. These Q-CAL vectors are then applied to projection data to generate image data.

REFERENCES:
patent: 5579359 (1996-11-01), Toth
patent: 5610963 (1997-03-01), Hsieh

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