Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1982-01-28
1985-07-23
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
250366, G01T 120
Patent
active
045310580
ABSTRACT:
A positron source, position sensing device, particularly with medical applications, in which positron induced gamma radiation is detected using a ring of stacked, individual scintillation crystals, a plurality of photodetectors, separated from the scintillation crystals by a light guide, and high resolution position interpolation electronics. Preferably the scintillation crystals are several times more numerous than the photodetectors with each crystal being responsible for a single scintillation event from a received gamma ray. The light guide will disperse the light emitted from gamma ray absorption over several photodetectors. Processing electronics for the output of the photodetectors resolves the location of the scintillation event to a fraction of the dimension of each photodetector. Because each positron absorption results in two 180.degree. oppositely traveling gamma rays, the detection of scintillation in pairs permits location of the positron source in a manner useful for diagnostic purposes. The processing electronics simultaneously responds to the outputs of the photodetectors to locate the scintillations to the source crystal. While it is preferable that the scintillation crystal include a plurality of stacked crystal elements, the resolving power of the processing electronics is also applicable to continuous crystal scintillators.
REFERENCES:
patent: 3432660 (1969-03-01), Anger
patent: 3732419 (1973-05-01), Kulberg et al.
patent: 3851177 (1974-11-01), Van Dijk et al.
patent: 3859531 (1975-01-01), Van Dijk
patent: 3862425 (1975-01-01), Myers
patent: 3908128 (1975-09-01), Richey
patent: 3937964 (1976-02-01), Muehllehner
patent: 3970852 (1976-07-01), Richey et al.
patent: 4071762 (1978-01-01), Lange et al.
patent: 4142102 (1979-02-01), Lange
patent: 4197583 (1980-04-01), Westell et al.
patent: 4223221 (1980-09-01), Gambini et al.
patent: 4250385 (1981-02-01), Luderer et al.
patent: 4262207 (1981-04-01), Tosswill
patent: 4274002 (1981-06-01), Tomita
Tanaka et al., "Scintillation Cameras Based on New Position Arithmetics", Jour. of Nuc. Med., vol. 11, No. 9, pp. 542-547.
Burnham et al., "Application of a One-Dimensional Scintillation Camera in a Positron Tomographic Ring Detector".
Burnham et al., "One Dimensional Scintillation Cameras for Positron ECT Ring Detectors" IEEE Trans. on Nuc. Sci., vol. NS-28, No. 1, Feb. 1981, pp.109-113.
Bradshaw, Jr. John F.
Brownell Gordon L.
Burnham Charles A.
Chesler David A.
Kaufman David E.
Howell Janice A.
The Massachusetts General Hospital
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