Method and image data system for generating a combined contrast medium and blood vessel representation of breast tissue to be examined, computer program product and computer-readable medium

An image data generating system, comprising:

• a projection data capturing unit for capturing first contrast-medium-influenced x-ray projection measurement data with a first x-ray energy and second contrast-medium-influenced x-ray projection measurement data with a second x-ray energy differing from the first x-ray energy;
• an image data generating unit for reconstructing a first image data set of breast tissue to be examined based on the captured first x-ray projection measurement data and a second image data set of the breast tissue to be examined based on the captured second x-ray projection measurement data;
• and
• an evaluation unit including:
• a dual-energy image ascertainment unit configured to ascertain a dual-energy image data set based on the first and the second image data sets,
• a blood vessel image ascertainment unit configured to ascertain a blood vessel image based on at least one of the first or second image data sets, and
• a combination image ascertainment unit configured to ascertain a combined contrast medium and blood vessel representation of the blood vessel image and of the dual-energy image data set;
• the combination image ascertainment unit being configured to ascertain the combined contrast medium and blood vessel representation by at least:
• representing the blood vessel image together with the dual-energy image data set sequentially or simultaneously;
• or
• merging the ascertained blood vessel image with the dual-energy image data set to form a superposition image in which structures being highlighted due to contrast medium accumulation and blood vessel structures are visible.