Detector apparatus and method for computer tomography and radiog

Details Detector apparatus and method for computer tomography and radiog Detector apparatus and method for computer tomography and radiog

1985-03-01

1987-01-20

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

357 29, G01T 122

Patent

active

046381651

ABSTRACT:
A detector system for computer tomography or computer radiography contains a plurality of flat detectors which are arranged side by side in the plane of a fan-shaped beam of ionizing rays. According to the invention, detectors of high purity germanium are provided, whose volume is selected so that the contribution of the generation-recombination current to the shot noise of the detectors is substantially smaller than customary in detectors for ionizing rays. With these detectors one obtains a good local resolution as well as a good signal-to-noise ratio and one requires no vacuum and no cooling.

REFERENCES:
patent: 3974388 (1976-08-01), Bistler et al.
patent: 4174481 (1979-11-01), Leibetruth
patent: 4292645 (1981-09-01), Schlosser et al.
IEEE Transactions on Nuclear Science, vol. NS-27, No. 1, 2/80, pp. 252-257.
IEEE Transactions on Nuclear Science, NS-20, No. 1, 2/73, pp. 494-499.
Kaufman et al., "Delay Line Readouts for High Purity Germanium Medical Imaging Cameras," IEEE Trans. on Nuc. Sci., vol. 21, No. 1, pp. 652-657, Feb. 1974.

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