METHOD,IMAGE PROCESSING DEVICE AND COMPUTED TOMOGRAPHY SYSTEM FOR DETERMINING A PROPORTION OF NECROTIC TISSUE AS WELL AS COMPUTER PROGRAM PRODUCT WITH PROGRAM SECTIONS FOR DETERMINING A PROPORTION OF NECROTIC TISSUE

摘要

Method, image processing device and computed tomography system for determining a proportion of necrotic tissue as well as computer program product with program code sections for deter- mining a proportion of necrotic tissue The invention relates to a method for determining a proportion of necrotic tissue (14) in a defined tissue area (16) of an object under examination (12) based on a high-energy image dataset (46) comprising an area of tissue (16) of the object under examination (12) and a low-energy image dataset (48) comprising an area of tissue (16) of the object under examination (12), which have been recorded by means of x-ray measurements with different x-ray energies after a contrast medium (KM) has been applied to the object under examination (12). A virtual contrast medium image (20) is determined (ER) from the high energy image dataset (46) and the low-energy image dataset (48) and a segmentation image dataset (22) is created, by the area of tissue (16) being segmented (SE). The segmentation result is transferred (UE) into the virtual contrast medium image (20) for segmenting the tissue area (16) in the virtual contrast medium image (20). Finally an analysis (AN) of values of the pixels lying in the segmented area (34) is undertaken for identifying pixels which are to be assigned to necrotic tissue (14). The invention also relates to a corresponding image processing device and a computed tomography system for determining a proportion of necrotic tissue as well as a computer program product with program code sections for executing such a method.