REVERSE HELICAL X-RAY TOMOGRAPHY WITH A CEILING MOUNTED C-ARM SYSTEM

摘要

An x-ray examination device and method for acquiring three-dimensional data of an object of interest are proposed. The x-ray examination device comprises a C-arm, the C-arm comprising a C-shaped element, an x-ray tube and an x-ray detector. The x-ray tube and the x-ray detector are arranged in opposite position relative to each other on the C-shaped element. The C-shaped element is capable of performing a roll movement and a movement in a sideward direction. The x-ray tube and the x-ray detector are movable along a helical path or alternating helical path. The method comprises a step of reconstructing images which includes a data reconstruction by means of a filtered back projection or an iterative reconstruction scheme.