Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1984-05-21
1986-12-16
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
250363S, G01T 1164
Patent
active
046298959
ABSTRACT:
In a gamma camera utilizing a collimator, a scintillator, a network of photomultiplier tubes and an array of matrices of resistors, the balanced pulses supplied by this array are measured by integration in an integrator stage which supplies locating pulses. These locating pulses serve the purpose of generating coordinate signals applied to a visual display device. Prior to integration, the direct interference components affecting the balanced pulses are eliminated by capacitive coupling of the array of matrices to the integrator stage. In order to prevent this coupling introducing means direct components at high counting rates, the output of this coupling means is periodically forced to assume the value of a base potential.
REFERENCES:
patent: 3914611 (1975-10-01), Stout
patent: 3950648 (1976-04-01), Martone et al.
patent: 3984689 (1976-10-01), Arseneau
patent: 4051373 (1977-09-01), Hatch
patent: 4058728 (1977-11-01), Nickles
IEEE Trans. Nuclear Science, NS-17, Feb. 1970 (New York, U.S.) L. O. Johnson et al.: "A Direct-Coupled Gamma-Ray Spectrometer For . . . ", pp. 276-283.
Gauthier Rene
Mestais Corinne
Roux Georges
Fields Carolyn E.
Informatek - Sopha Medical
Plottel Roland
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