Scattered-ray grid, particularly for a medical X-ray device, and a method of determining the position of the absorption elements of a scattered-ray grid

In a scattered-ray grid having a carrier on which a plurality of radiation absorption elements are disposed in a plurality of rows, said grid having a grid center and each of said rows having an origin and radiating spoke-like away from said grid center, the improvement comprising:

• said grid being divided into a plurality of identical grid sectors;
• in each of said grid sectors, at least one of said rows having an origin at said grid center;
• and
• in each of said grid sectors, the respective origins of rows, other than said at least one row originating at said grid center, being disposed at intersections of respective radial lines with at least an arc of respective circles of predetermined radii relative to said grid center, each of said radial lines dividing an angle section between two adjacent rows by a predetermined ratio.

In a scattered-ray grid having a carrier on which a plurality of radiation absorption elements are disposed in a plurality of rows, said grid having a grid center and each of said rows having an origin and radiating spoke-like away from said grid center, a method for determining placement of the respective origins of said rows on said carrier comprising the steps of:

• dividing said grid into a plurality of identical grid sectors
• in each of said grid sectors, originating at least one of said rows at said grid center;
• and
• in each of said grid sectors, placing the respective origins of rows, other than said at least one row originating at said grid center, intersections of respective radial lines with at least an arc of respective circles of predetermined radii relative to said grid center, each of said lines dividing an angle section between two adjacent rows by a predetermined ratio.