X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1983-10-17
1988-09-06
Howell, Janice A.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378 10, 378 15, 378 19, G01N 2308
Patent
active
047698284
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.
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EMI Limited
Howell Janice A.
Porta David P.
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