FIELD: medicine.
SUBSTANCE: invention relates to spectral computer tomography. Achieved technical result is achieved due to estimating of local noise value for one or more voxels of spectral image of set of spectral images corresponding to different energy ranges, creating noise model for spectral image to remove noise voxel based on selected model of local structure by replacement of voxel value with value, estimated based on selected model of local structure, wherein for multiple voxels of plurality of spectral images of set of spectral images noise is removed due to that set of spectral images with removed noise is created.
EFFECT: technical result consists in reduction of radiation dose for given image quality.
10 cl, 15 dwg
