MR SEGMENTATION USING RADIONUCLIDE EMISSION DATA IN MIXED RADIONUCLIDE / MR IMAGE FORMATION

摘要

1. A system (10) that facilitates resolving uncertainties in a magnetic resonance (MR) image or attenuation map, including an MR reconstruction processor (16) configured to generate an MR image (20) from primary MR data (14) obtained by scanning a subject with an MR scanner (11), a functional image reconstruction processor (17) configured to generate a functional image (21) from functional image data (15) obtained by scanning the subject with a scanner (11) of a functional image, and a processor (28) configured to segment an MR image (20) to form a segmented MR image (33) having an air / bone uncertainty zone in which it is not possible to resolve the uncertainty between air voxels and bone voxels, segmenting a functional image (21) for forming a segmented functional image (35) having bone zones, comparing bone zones in a segmented functional image (35) with a bone / air zone of uncertainty in a segmented MR image (33) to resolve the uncertainty between the voxels in the bone / air zone in the segmented MR image (33) that correspond to bone and air, assign radiation attenuation values consistent with the bone identified by the voxels of the bone and consistent with air identified by the voxels of the air in the segmented MR image (33), generating an attenuation map (39) of the MR attenuation using the assigned radiation attenuation values, wherein the functional image data includes emission