Medical image display and analysis for diagnosis and treatment

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Medical images such as magnetic resonance images (MRI) and colour skin images can be used for research, for diagnosis, and for surgery planning. Our planned research will focus on Diffusion Tensor MR images (DT-MR), a new medical imaging modality that measures the random motion of water molecules in biological tissues (mainly the brain and heart) non-invasively and in vivo. It results in a 3D image where at each voxel the direction of water diffusion is modeled as a diffusion tensor. Processing and analysing DT-MR images such as performing noise reduction, segmentation, registration, etc. requires working with diffusion tensor distance metrics. Several DT distance metrics have been proposed; we are working on new metrics which separate the shape of the tensor from the angle. This approach has promise in studying brain disorders such as Parkinson's Disease, and in locating regions of the brain where the fiber tracts exhibit anisotropy.