A method for generating images in the spiral - computer tomography and spiral - ct - apparatus

摘要

A method for generating images in the spiral - computer tomography comprising at least the following process steps:1.1. to the scanning of an examination subject, preferably of a patient (p), comprising at least one of a focus (2) extending from the conical radiation beam (4) and with at least one flat, preferably formed vielzeilig, detector (5) with a in the z - the direction oriented width (b) for detecting of the at least one radiation beam (4), the at least one focus (2) on a spiral-shaped focus web (s) is moved around the object to be examined, wherein the at least one detector (5) output data, which correspond to the detected radiation,1.2, it is to be incomplete intermediate images (10) by means of a segment angle α is calculated, which lead to a data volume, and1.3. with the aid of the incomplete intermediate images (10) slice images (14) are generated,characterized in that1.4. to the reduction of the data intensity in the calculation of the intermediate images (10), adapted to the frequency content of the intermediate images (10), an anisotropic sampling pattern with about 2π / ω_a in the direction of the line and 2π / ω_b in..