X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1989-05-19
1990-06-19
Howell, Janice A.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378 11, 378 4, 378 19, G03B 4116
Patent
active
049348329
ABSTRACT:
A computer tomograph apparatus of the type having a rotating frame which carriers an x-ray source and a radiation detector includes a mount for the radiation detector which resiliently seats the radiation detector on the rotating frame permitting slight displacement of the radiation detector in a direction tangent to the orbit of the detector around a patient. The resilient mounting of the radiation detector suppresses the transmission of mechanical jolts and other jarring forces from the rotating frame to the detector. Because of the resilient mounting, the weight of the radiation detector will cause a slight dislocation of the detector during a revolution. To compensate for this dislocation the rated position of the focus is determined dependent upon the detector position, so that the position of the focus can be adjusted corresponding to this detector displacement.
REFERENCES:
patent: 3934142 (1976-01-01), Hounfield
patent: 4002917 (1977-01-01), Mayo
patent: 4211925 (1980-07-01), Fairbairn
patent: 4417354 (1983-11-01), Pfeiler
patent: 4837792 (1989-06-01), Goethert
patent: 4850004 (1989-07-01), Saito et al.
Howell Janice A.
Siemens Aktiengesellschaft
Wong Don
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