X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1983-06-23
1984-08-07
Smith, Alfred E.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378 19, A61B 600, G03B 4116
Patent
active
044647760
ABSTRACT:
A CT scanner having an outer circular array of stationary radiation detectors for an inner concentrically revolving source of radiation emitted in a fan pattern subtending a number of the detectors. Each grouping of 15 consecutive detectors is housed in a detector module, each one of which is provided with an electro-optical device which is arranged to normally deactivate the output of each of the detectors in the module. The detectors are arranged in exclusive groups of four nonconsecutive detectors each equiangularly disposed about the array connected in daisy chain fashion with the output of each of said nonconsecutive detector groups applied to a single signal cable defining a corresponding signal processing channel. There is also provided an opaque vane arranged for rotation in fixed relation to said revolving source of radiation for temporarily interrupting the deactivation caused by each of the electro-optical devices which correspond to those detectors in the array which at any time are being irradiated by said source.
REFERENCES:
patent: 4220863 (1980-09-01), McBride et al.
Grigsby T. N.
Kaufman Michael A.
Smith Alfred E.
Technicare Corporation
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