Patent ID: 8594274

Claim:
A method to visually present a concentration of a contrast agent in a predetermined volume segment of an examination subject, comprising: administering a contrast agent to an examination subject and thereafter operating an imaging apparatus with a low radiation energy to generate a two-dimensional, low-energy image of a predetermined volume segment of an examination subject; also after administering the contrast agent, operating the imaging apparatus with a high radiation energy, which is substantially higher than said low radiation energy, to generate at least one two-dimensional, high-energy image of the predetermined volume segment; after generating said two-dimensional, low-energy image, operating the imaging apparatus with a high total radiation energy that is substantially higher than said low radiation energy, to implement a high-energy tomosynthesis of the predetermined volume segment, thereby obtaining a three-dimensional tomosynthesis image; in a processor, subtracting said two-dimensional, low-energy image from said at least one two-dimensional, high-energy image to generate a subtraction image in which a concentration of said contrast agent in said predetermined volume segment is visible; and making each of said tomosynthesis image and said subtraction image available in a form for visual display thereof.