Method for generating images by means of a computed tomography device, and computed tomography device

A method for generating images via a computed tomography device, configured to generate a first X-ray spectrum and a second X-ray spectrum which differ from one another, the method comprising:

• recording image data at a pitch chosen such that at least two slice images are reconstructable for a sectional position for each of the first X-ray spectrum and the second X-ray spectrum;
• reconstructing, for the sectional position for each of the first X-ray spectrum and the second X-ray spectrum, a respective at least two slice images for the first X-ray spectrum and a respective at least two slice images for the second X-ray spectrum;
• and
• gradually registering, to generate a motion-reduced first spectral image assigned to the first X-ray spectrum and a motion-reduced second spectral image assigned to the second X-ray spectrum, respectively assigned at least two slice images for the first X-ray spectrum and the at least two slice images for the second X-ray spectrum, to one another.

A computed tomography device, comprising:

• an X-ray source;
• a multiple-row detector, in which a first row area of the multiple-row detector is illuminatable with a first X-ray spectrum and a second row area of the multiple-row detector, trailing in a direction of travel, is illuminatable with a second X-ray spectrum;
• and
• a control and analysis computer, configured to implement at least
• recording image data at a pitch chosen such that one slice image is reconstructable for a sectional position for each of the first row area and the second row area;
• reconstructing, for the sectional position for each of the first row area and the second row area, a respective slice image for the first row area and a respective slice image for the second row area;
• reconstructing a reference sectional image for a third row area, illuminated with the first X-ray spectrum and the second X-ray spectrum, as a slice image;
• and
• registering to the reference sectional image, to generate motion-reduced respective first spectral images and second spectral images, respectively assigned to the first row area and the second row area, the respective slice images of the first row area and second row area.