Patent ID: 8705831

Claim:
An image generation system for generating an image of a region of interest, the image generation system comprising: a measured data providing unit for providing measured data of the region of interest for generating an image of the region of interest, a reconstruction unit for reconstructing a first image (I i ) of the region of interest from the measured data using a first reconstruction method and a second image (I 2 ) of the region of interest from the measured data using a second reconstruction method, a noise determination unit for determining first noise values (n 1 ) for first image elements (i 1 ) of the first image (I 1 ) and second noise values (n 2 ) for second image elements (i 2 ) of the second image (I 2 ), and an image element combining unit for combining the first image elements (i 1 ) and the second image elements (i 2 ) into combined image elements (i C ) forming a combined image (I c ), wherein the noise determination unit determines joint third noise values (n 1,2 ) for the first image elements (i 1 ) and the second image elements (i 2 ), and wherein the image element combining unit combines a first image element (i 1 ) of the first image elements (i 1 ) and a corresponding second image element (i 2 ) of the second image elements (i 2 ) based on the first noise value (n 1 ) determined for the first image element (i 1 ), the second noise value (n 2 ) determined for the second image element (i 2 ) and the joint third noise value (n 1,2 ) determined for the first image element (i 1 ) and the second image element (i 2 ).