Method, tube and system for eliminating a fixed antiscatter grid

Details Method, tube and system for eliminating a fixed antiscatter grid Method, tube and system for eliminating a fixed antiscatter grid

1991-12-23

1993-03-16

Church, Craig E.

X-ray or gamma ray systems or devices

Beam control

Antiscatter grid

378 62, G21K 100

Patent

active

051951207

ABSTRACT:
In a radiological apparatus using an antiscatter grid, this grid is kept fixed instead of being movable, and its image is removed by irradiating it as well as the object to be examined by two X-ray sources that have to be separated by a distance b determined by the first zero of the modulation transfer function of this two-source system. To take account of the magnification G, the distance b can be adjusted by means of a cathode emitting two electron beams with adjustable deflection.

REFERENCES:
patent: 4380086 (1983-04-01), Vagi
patent: 5050198 (1991-09-01), Honda

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