Device for setting region of interest for scintillation camera

Details Device for setting region of interest for scintillation camera Device for setting region of interest for scintillation camera

1977-07-05

1980-04-29

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

G01T 120

Patent

active

042007933

ABSTRACT:
The present invention is a device for setting a region of interest for a scintillation camera. It is employed for determining whether or not the coordinate signals X and Y which represent the positions of incident gamma rays are located within a specified region which is set by designating arbitrary positions and shape(s) on a rectangular coordinate system provided on the visual field of a camera. This device includes a region setting circuit for discriminating whether the coordinate signals X and Y are located within the specified region through comparison of the potential of the sum of the square of the values of the coordinate signals X and Y with a reference voltage.

REFERENCES:
patent: 3970852 (1976-07-01), Richey et al.
patent: 4013878 (1977-03-01), Wagner

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