Method and apparatus for reducing x-ray grid images

Details Method and apparatus for reducing x-ray grid images Method and apparatus for reducing x-ray grid images

1989-06-05

1991-08-13

Church, Craig E.

X-ray or gamma ray systems or devices

Beam control

Antiscatter grid

378146, G21K 100

Patent

active

050402021

ABSTRACT:
1. A diagnostic x-ray machine including a reciprocating grid reduces grid lines, in the radiographic image, formed as a result of velocity variations in the reciprocation of the grid, principally at the points of grid reversal. An x-ray source produces a beam of x-ray radiation along a major axis directed through the body and to the grid. A reciprocating mechanism moves the grid within a plane perpendicular to the major axis between a first limit and a second limit and the x-ray beam is modulated synchronously with the grid motion to reduce the grid image at points of grid speed variation.

REFERENCES:
patent: 2102146 (1937-12-01), Garretson
patent: 3904531 (1975-09-01), Barrett et al.
patent: 4063100 (1977-12-01), Williams
patent: 4528685 (1985-07-01), Kump et al.
patent: 4703496 (1987-10-01), Meccariello et al.
patent: 4744099 (1988-05-01), Huettenrauch et al.
patent: 4803716 (1989-02-01), Ammann et al.
patent: 4901335 (1990-02-01), Ferlic et al.

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