Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1994-07-29
1996-04-02
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
25036307, 250369, G01T 1164
Patent
active
055043330
ABSTRACT:
In a scintillation camera processing a .gamma.-ray emitted from a nuclide administered to a subject, there is provided an element for memorizing a plurality of linearity correction data corresponding individually to a plurality of sub windows dividing a one energy window specified to one energy spectrum distribution of the .gamma.-ray. Further, the camera comprises an element for collecting two-dimensionally the .gamma.-ray, an element for calculating a two-dimensional positional signal and an energy signal of the .gamma.-ray based on information from the collecting element, an element for discriminating strength of the energy signal, an element for selecting one of the plurality of linearity correction data according to a discrimination result of the discriminating element, and an element for correcting the positional signal in linearity using the selected linearity correction data. The scintillation camera, as another aspect, further comprises an element for correcting the energy signal in deviation on an energy spectrum, the corrected energy signal being sent to the discriminating element.
REFERENCES:
patent: 4095108 (1978-06-01), Inbar et al.
patent: 4316257 (1982-02-01), Del Medico et al.
patent: 4323977 (1982-04-01), Arseneau
patent: 4424446 (1984-01-01), Inbar et al.
patent: 4588897 (1986-05-01), Inbar et al.
patent: 5345082 (1994-09-01), Engdahl et al.
Kobayashi Hiroaki
Yamakawa Tsutomu
Fields Carolyn E.
Kabushiki Kaisha Toshiba
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