Gamma camera fitted with a pin-hole cone for photographic type a

Details Gamma camera fitted with a pin-hole cone for photographic type a Gamma camera fitted with a pin-hole cone for photographic type a

1990-10-25

1991-12-31

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

378148, 2505051, G01T 1164

Patent

active

050774794

ABSTRACT:
A gamma camera of the invention fitted with a pin-hole cone for acquiring photographic type images, i.e. having a tungsten end fitting disposed at the small end of a truncated cone and provided with a pin-hole therethrough, is suitable for forming a point image of an object to be observed on the basis of gamma radiation emitted therefrom, transmitted through the pin-hole and magnified on reaching the inlet to the scintillator. The truncated cone is modular in structure: the pin-hole cone is mainly constituted by a base, a first truncated cone of suitable thickness for stopping low energy gamma radiation, and a second truncated cone superposable at will on the first so that the assembled cones are of sufficient thickness to stop high energy gamma radiation.

REFERENCES:
patent: 4061919 (1977-12-01), Miller et al.
patent: 4348591 (1982-09-01), Wunderlich
patent: 4959547 (1990-09-01), Carroll et al.
Malamud et al. "Simple and Efficient System for Fast Interchange of Low Energy Collimators" J. Nucl. Med. (U.S.A.) (Dec. 1975) vol. 16, No. 12, pp. 1195-1196.
Journal of Nuclear Medicine, vol. 15, No. 2, Feb. 1974, R. A. Moyer, "A Low-Energy Multihole Converging Collimator Compared with a Pinhole Collimator", pp. 59-64.

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