Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1985-11-08
1987-06-09
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
250367, G01T 1202
Patent
active
046722084
ABSTRACT:
A particle detector crystal comprising a diamond-shaped crystal scintillation material having 60 degree and 120 degree apexes and having at least one slot extending from a lower surface of that crystal into the interior of that crystal in a direction substantially parallel to a minor diagonal axis of the crystal a distance sufficient to reduce internal light bounce within that crystal. A plurality of such particle detector crystals are employed in groups of six each arranged with the 60 degree apexes of the crystals in each group positioned contiguous to each other to form a six-pointed star and further employing a plurality of light detectors arranged in a hexagonal array with each detector located above a respective situs of the contiguous 60 degree apexes.
REFERENCES:
patent: 3930160 (1975-12-01), Swinehart
patent: 4267452 (1981-05-01), Govaert
Heyda et al., "A Third Generation Digital Gamma Camera", Baird Corp., Application of Optical Instrumentation in Medicine III, Proc. SPIE, vol. 454, pp. 478-484, 1984.
"Mobile Camera Images Heart with High Resolution", Diagnostic Imaging, Jul. 1984.
Fields Carolyn E.
Kabushiki Kaisha Toshiba
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