RECONSTRUCTION OF REGION-OF-INTEREST IMAGE Russian patent published in 2015 - IPC G06K9/00 G06T11/00 H04N19/167 A61B6/03 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to image visualisation, particularly a method and a system to perform region-of-interest (ROI) reconstruction with maximum likelihood, even if the original projection data are truncated. An image reconstruction method to generate an image of a region-of-interest comprises collecting image data relating to an imaged object in a tunnel of an imaging system to generate measured full sinogram data; using the measured data to perform image reconstruction of the tunnel and generate a tunnel reconstructed image; identifying an iteration region in the tunnel reconstructed image; removing the iteration region from the tunnel reconstructed image to generate an intermediate image; forward projecting the intermediate image to generate simulated partial sinogram data; subtracting the simulated partial sinogram data from the measured full sinogram data to generate iteration region sinogram data; and reconstructing the iteration region sinogram data to generate an image of the region-of-interest.

EFFECT: reducing visual distortions of reconstructed images.

14 cl, 11 dwg