Radiography

Details Radiography Radiography

1991-11-22

1993-06-08

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 4, A61B 602

Patent

active

052186245

ABSTRACT:
In a radiographic apparatus, a source of radiation is arranged to scan a planar spread of radiation in a plane about the body of a patient being examined. A plurality of detector devices is arranged to provide data representing the absorption of the radiation along a plurality of paths within the spread, for different orientations in the plane, for processing to determine a distribution of absorption coefficients for a planar slice of the body. The arrangement is such that a predetermined number of the detector devices are irradiated by the spread of radiation at any time and the actual devices irradiated change progressively as the scan progresses.

REFERENCES:
patent: 4002917 (1977-01-01), Mayo
patent: 4057725 (1977-11-01), Wagner
patent: 4411011 (1983-10-01), LeMay
patent: 4769828 (1988-09-01), LeMay
patent: 4833698 (1989-05-01), Flannery et al.

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