X-ray apparatus for determining the distribution of density and atomic number in an examination object is based on a conventional CT device with an additional two-part filter placed between the source and object

摘要

X-ray apparatus has a source (1) for emission of X- ray radiation (13), a detector for receipt of said radiation and conversion into electrical signals for further processing and a signal-processing unit (7, 8) for processing the signals. A two-part filter (9) is placed in the beam path between source and object and servers to split the beam into two, intensity dependent, beam paths.