SCATTERED-RAY GRID ESPECIALLY FOR MEDICAL X-RAY DEVICE AND METHOD FOR DETERMINING THE POSITION OF ASORPTION ELEMENT THEREOF

摘要

PURPOSE: A scattered-ray grid containing a carrier with the absorption elements arranged thereon in spaced rows and a method for determining the position of the absorption elements of the scattered-ray grid are provided. The scattered-ray grid is improved in an aspect of the arrangement of absorption elements rows compared to conventional scattered-ray grids. CONSTITUTION: The scattered-ray grid comprises a carrier with absorption elements arranged thereon in spaced rows which proceed essentially spoke-like relative to a grid center, wherein the individual rows(3) of a scattered-ray grid(1), or of substantially identical grid sectors of the scattered-ray grid each originate from respectively different radii except for one or more rows(3) which originate at a grid center(Z), the origin of each row is situated in an angle section, which is determined on the basis of at least two points lying on a circle, or an arc of circle, with a predetermined radius and which is divided in as predefined ratio for determining the position of the origin, and the predetermined radius is incremented in a stepwise manner to determine respective origins for all of the rows.