Prefilter collimator for PET gamma camera

Details Prefilter collimator for PET gamma camera Prefilter collimator for PET gamma camera

1997-01-08

1998-05-12

Tokar, Michael J.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

25036302, G01T 1161, G01T 1164

Patent

active

057510008

ABSTRACT:
A gamma camera is equipped with a graded filter plate in lieu of a collimator so that the gamma camera can perform PET studies. The filter plate prevents detection of Compton scattered, positron annihilation photons produced in the patient while permitting detection of photons which have experienced Compton scattering within the camera's scintillation crystal to significantly increase the camera's usable count rate. Additionally, the filter is fitted with a protruding baffle shielding the camera from stray 511 Kev radiation.

REFERENCES:
patent: 4323779 (1982-04-01), Albert
patent: 4528453 (1985-07-01), Heller
patent: 5239568 (1993-08-01), Grenier
patent: 5381012 (1995-01-01), Kutolowski
patent: 5512754 (1996-04-01), Enos
patent: 5585637 (1996-12-01), Bertelsen et al.
patent: 5608221 (1997-03-01), Bertelsen et al.

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