US 7,127,038 B2 · X-ray grid arrangement

Abstract

The invention relates to a grid holder for an X-ray diagnostic system. The grid holder cooperates with a flexible X-ray grid, which in a flat state has a first focus distance/convergence distance of about 120 cm. A flexing means, preferably in the form of an inflatable element, which can exert a pressure on the surface of the grid, is arranged to flex the grid in a first direction to a first position in which it has a second convergence distance of about 180 cm. Another corresponding flexing means is arranged to flex the grid in the opposite direction to a second position in which it has a third convergence distance of about 80 cm. This allows variable convergence distances with minimum flexing of the grid. The invention also relates to grid devices with grid holders and grids as well as X-ray diagnostic systems comprising such grid holders/grid devices.

Claims20

Dependent claims

A grid holding device for a medical X-ray diagnostic system, which device is adapted to cooperate with a flexible, plate-shaped X-ray grid (401), which in a flat state has a first convergence distance, and which device comprises a flexing means for flexing the X-ray grid in order to adjust the convergence distance of the X-ray grid, wherein the flexing means comprises a first means (404) for flexing the X-ray grid in a first direction from the flat state to a first predetermined flexed position, in which the grid has a second convergence distance, which is longer than the first convergence distance, and a second means (404′) for flexing the X-ray grid in a second direction from the flat state to a second predetermined flexed position, in which the grid has a third convergence distance, which is shorter than the first convergence distance.

Dependencies are inferred from the claim text.

X-ray grid arrangement

Life of this patent

X-ray grid arrangement

Life of this patent

Abstract

Claims20