Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1992-04-14
1993-09-14
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
25036310, 25037009, G01T 1161, G01T 124
Patent
active
052451917
ABSTRACT:
A hybrid gamma-ray semiconductor detector is used in combination with attenuating apertures of the kind used in emission computed tomography. The detector comprises a slab of semiconductor material partitioned into multiple cells individually connected to a multiplexer through indium-bump pressure welds for the sequential read-out of integrated pulses generated in each cell as a result of gamma-ray absorption events. The single output channel provided by the multiplexer permits the construction of semiconductor sensor cells approximately one millimeter in size for improved spatial resolution of the detector. The greater resolution of the detector makes it possible to narrow the distance between the image forming apertures and the detector's surface, thus minimizing overlapping of the gamma-ray radiation and the size of the overall apparatus. As a result of the smaller acceptable distance between the aperture surface and the detector, it is also possible to have a greater number of apertures without overlap with a resulting substantial improvement in system sensitivity.
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Barber Herbert B.
Barrett Harrison H.
Dereniak Eustace L.
Rogulski Michel M.
Durando Antonio R.
Glick Edward J.
Hannaher Constantine
The Board of Regents of the University of Arizona
Weiss Harry M.
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