SELECTION METHOD FOR TWO CONTRAST FOR USE IN A DUAL-ENERGY CT EXAMINATION, CONTRAST MEDIA COMBINATION AND GENERATION OF CT IMAGES USING A CONTRAST MEDIA COMBINATION AND DIFFERENT ENERGY SPECTRA

摘要

The invention relates to a method for selecting two contrast media for use in a dual-energy CT examination of a patient. Said method comprises the following: determination of the gradient (m) (= base gradient) of a connecting line in an HU value diagram of energy-specific HU values between a first material or a first tissue type (G1) and a second material or second tissue type (G2), selection of a first contrast medium (K1) with an enhanced gradient (m1), which is significantly higher than the determined base gradient (m), and selection of a second contrast medium (K2), the enhancement gradient (m2) of which lies in the significant region of the determined base gradient (m). The invention also relates to a contrast medium combination that has been selected in this way and to the generation of CT images using a contrast medium combination that has been selected in this way, with the aid of different energy spectra.