X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1997-10-10
2000-07-18
Church, Craig E.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
25037011, G01N 2300
Patent
active
060917954
ABSTRACT:
A two-dimensional area detector array for a CT scanning system includes a set of alignment grids for aligning individual scintillator crystals with corresponding photodiodes and for preventing optical and electrical interference between adjacent photodiodes. The alignment grids thus facilitate efficient transfer of information from the scintillation crystals to the photodiodes and also permit the detector array to be constructed with many very small, very closely spaced individual detector elements. The alignment grids are preferably made of a substantially opaque material having a relatively low coefficient of thermal expansion. They provide a highly beneficial dimensional stability to the detector array under the typical operating conditions of the CT scanner.
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Harootian Simon George
Marcovici Sorin
Schafer David A.
Analogic Corporation
Church Craig E.
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