Patent ID: 8542230

Claim:
A method for preparing CT image displays, comprising: compiling CT image data records of an area of a patient on the basis of N≧2 different X-ray energy spectra, each pixel or voxel of the CT image data records being assigned an N-tuple of CT numbers, each CT number of the N-tuple being assigned to an absorption value of one of the N different X-ray energy spectra; carrying out material decomposition over at least one subarea of the area of the patient represented in the CT image data records with reference to at least three materials including at least bone mineral, yellow bone marrow and red bone marrow; and at least one of outputting and displaying at least one CT image data record at least with reference to the subarea with absorption values relating to one of the N different X-ray energy spectra or to a mathematically simulated spectrum from which the bone mineral content is extracted.