Gamma ray camera using a channel amplifier

Details Gamma ray camera using a channel amplifier Gamma ray camera using a channel amplifier

1979-10-22

1981-06-09

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250368, 250483, G01T 120, G01T 100

Patent

active

042726786

ABSTRACT:
In a gamma camera, to improve resolution, primary scintillations resulting from absorption of gamma ray photons in a scintillator crystal are intercepted by the input face of a channel amplifier plate in which the primary scintillations excite a photocathode to emit electrons which are multiplied in the respective channels and reconverted to secondary scintillations in a phosphorescent output screen from which the brighter secondary scintillations are coupled to an array of photodetectors which produce signals that are used to determine the x and y coordinates of the scintillations. The secondary scintillation positions correspond with the primary scintillations in the crystal because the channels keep them aligned.

REFERENCES:
patent: 3267283 (1966-08-01), Kapany
patent: 3971942 (1976-07-01), Seidman et al.
patent: 4142101 (1979-02-01), Yin
Shafrir et al., "A Proposal for a Combined Scintillation-Image-Intensifer Section for Application in Gamma Camera", Nuc. Inst. & Methods, 136 (2), 7-15-76, pp. 399-400.
Shafrir et al., "Novel Gamma Cameras", ISPRA Sym., Stresa, Italy, 5-20-75, Nuc. Sci. Abs., vol. 33, 5-15-76, #20261.
Conrad et al., "The Scinticon, A New Gamma-Camera", Electromedea, vol. 4, 5-73; pp. 220-225.

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