Readout system for multi-crystal gamma cameras

Details Readout system for multi-crystal gamma cameras Readout system for multi-crystal gamma cameras

1985-08-21

1987-06-09

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250366, 250367, 250369, 250370, G01T 1164

Patent

active

046722076

ABSTRACT:
A radioisotope camera (10) having an array (12) of scintillation crystals (13) arranged in N rows and M columns and adapted to be struck by gamma-rays from a subject, a separate solid state photodetector (15 ) optically coupled to each crystal (13), and N+M amplifiers (24) connected to the photodetectors (15) to distinguish the particular row and column of an activated photodetector. One of the anode or cathode leads (33 or 34) of each photodetector (15) is coupled to the row amplifier (24) associated with the row containing that photodetector while the other of the two leads (34 or 33) is coupled to the column amplifier (24) associated with the column containing that photodetector.

REFERENCES:
patent: 4055765 (1977-10-01), Gerber et al.
patent: 4059766 (1977-11-01), Rougeot
patent: 4070578 (1978-01-01), Timothy et al.
patent: 4303860 (1981-12-01), Bjorkholm et al.
patent: 4394576 (1983-07-01), Tanaka et al.
patent: 4437007 (1984-03-01), Koslow et al.
Sveinsdottir et al., "A Multidetector Camera with 254 Channels", J. Nucl. Med., 18 (2), Feb. 1977, pp. 168-174.
Petrillo et al., "Scintillating Detection with Large-Area Reach-Through Avalanche Photodiodes", IEEE Trans. Nucl. Sci., NS-31 (1), Feb. 1984 pp. 417-423.
Capasso, "Avalanche Photodiodes with Enhanced Ionization Rates Ratio: Towards A Solid State Photomultiplier", IEEE Trans. Nucl. Sci., NS-30 (1) Feb. 1983, pp. 424-425.

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