1. A method for magnetic resonance imaging (MRI) for musculoskeletal tissue segmentation, comprising: a) collecting MRI image data using at least two different contrast mechanisms; b) using voxel values from data from each contrast mechanism as elements of a feature vector; c) comparing the feature vector with classification boundaries to classify musculoskeletal tissue type of the voxel; d) repeating steps b-c for a plurality of voxels; and e) generating an image from the classified musculoskeletal tissue types for the plurality of voxels to provide a musculoskeletal segmentation image.