Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1983-03-23
1986-01-07
Smith, Alfred E.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
2505051, G01T 1208, G21K 102
Patent
active
045635838
ABSTRACT:
In a scintillation camera with a position calculation circuit which is indispensable to the Anger scintillation camera, the number of incident gamma rays is integrated only in the lengthwise direction of the shielding plates of a rotatable parallel plate collimator. Data on one-dimensional distribution, which are collected every time the collimator has rotated by the specified angle, are subjected to image information processing so that a picture of distribution of gamma rays may be obtained. In the presently proposed improvements in the Anger scintillation camera, a coordinate transformation circuit is added thereto, in which outputs taken from a position calculation circuit in the form of data on two-dimensional distribution are transformed into data on one-dimensional distribution and fed to an arithmetic unit for the reconstruction of an image. A collimator, which is effective for the collection of data on one-dimensional distribution, is also proposed.
REFERENCES:
patent: 4047037 (1977-09-01), Schlosser et al.
W. Mauderli, R. W. Luthmann, L. T. Fitzgerald, M. M. Urie, C. M. Williams, C. W. Tosswill and G. Entine, "A Computerized Rotating Laminar Radionuclide Camera", J. Nucl. Med., vol. 20, No. 4, (1979), pp. 341-344.
W. I. Keyes, "The Fan-Beam Gamma Camera", Phys. Med. Biol., vol. 20, No. 3, (1975), pp. 489-493.
Hannaher Constantine
Shimadzu Corporation
Smith Alfred E.
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