Scintillation camera radiation shielding

Details Scintillation camera radiation shielding Scintillation camera radiation shielding

1980-01-22

1983-03-22

Anderson, Bruce C.

X-ray or gamma ray systems or devices

Beam control

Collimator

2505051, G21F 504

Patent

active

043777520

ABSTRACT:
A radiation absorption shield assembly is disclosed for controlling the configuration of the radiation sensitive field of a radiation detecting camera. The shield assembly includes a first annular lead shield element defining a first aperture and mounted to the camera for blocking out a fixed field of radiation. The assembly also includes a second annular lead shield element in series with the first which defines a second aperture movable with respect to the first aperture. Attached to and in a spaced parallel relation with the first shield element is a circular radiation transparent disk which defines a thin gap to accommodate the second shield element. The second shield element is slidably adjustable within the gap, transverse to the first element, by one conducting a radiation study, to vary the configuration of a region of interest defining a field area through which radiation can pass from the patient for detection by the camera.

REFERENCES:
patent: 3474250 (1969-10-01), Jelatis et al.
patent: 3631249 (1971-12-01), Friede et al.
patent: 3792274 (1974-02-01), Larson
patent: 3849649 (1974-11-01), Carey
patent: 3980407 (1976-09-01), Hill

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