Tomography detector temperature equalization

Details Tomography detector temperature equalization Tomography detector temperature equalization

1994-02-03

1995-08-22

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 4, 378199, G01T 124

Patent

active

054447526

ABSTRACT:
Temperature control of solid state detectors carried on the rotating gantry of computed tomography equipment is impractical for very detailed images. The temperatures of all of the detectors in the array can be equalized, however, by closely coupling them to a thermally massive object and isolating this combination from the environment. Significant thermal gradients are thereby removed from the array, and time is removed as a calibrating factor. The detectors are mounted on a common heat sink which provides the thermal mass, and the heat sink is covered with insulation and attached to the gantry by thermally isolating mounts, such as thin flexible stainless steel plates.

REFERENCES:
patent: 4338521 (1982-07-01), Shaw et al.
patent: 4456826 (1984-06-01), Forster
patent: 4651338 (1987-03-01), Hahn
patent: 4709559 (1987-12-01), Dotzauer et al.
patent: 4831639 (1989-05-01), Harte
patent: 4934823 (1990-06-01), Strauss
patent: 4969167 (1990-11-01), Zupancic et al.

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