Movable collimator for positron annihilation imaging device

Details Movable collimator for positron annihilation imaging device Movable collimator for positron annihilation imaging device

1979-08-27

1981-03-31

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250366, 250445T, G01T 120, G01N 2100

Patent

active

042595789

ABSTRACT:
A positron annihilation imaging device having two circular arrays of detectors disposed in spaced apart parallel planes wherein axially movable annular collimator rings are generally disposed in a pair of opposite planes outside the associated planes of the collimators to each collimator being movable toward the opposite collimator and a central collimator of annular configuration generally disposed between the two rows of detectors but being split into two rings which may be separated, the outer and inner collimators serving to enhance data readout and imaging.

REFERENCES:
patent: 2852684 (1958-09-01), Payne, Jr.
patent: 4150292 (1979-04-01), Ter-Pogossian
patent: 4176280 (1979-11-01), Greschat et al.

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