Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1987-05-20
1990-01-09
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
25037013, 25037001, G01T 122
Patent
active
048930180
ABSTRACT:
A radiation detecting circuit includes a semiconductor radiation detector, a charge converting circuit, a duration time measuring circuit, an incident position detecting circuit, and a correcting circuit, A photon is detected by the detector, and charges are induced therein. Based upon these charges, the duration time period of induction current is measured, and the positional signal of the incident photon is produced based upon the duration time period of the incident photon. The voltage output from the charge converting circuit is corrected on the basis of the positional signal so as to produce an energy value of the incident photon independent of the incident position on the detector.
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Allison, "Cadmium Telluride Matrix Gamma Camera" Medical Physics, vol. 7, No. 3, May/Jun. (1980), pp. 202-206.
Howell Janice A.
Kabushiki Kaisha Toshiba
Rauchholz William F.
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