a variant of *diffusion weighted imaging in which both the direction and the amount of diffusion of water molecules in a tissue are coded in the image. This MRI technique can be valuable in linear structures, such as nerves and muscle fibres. In the brain the major tracts and their communications can be studied with this technique (see tractography).... diffusion tensor imaging
involuntary persistent contraction of the tensor tympani muscle in the middle ear, attached to the malleus bone, giving rise to tinnitus, distorted hearing, a sensation of blockage of the ear, or pain.... tonic tensor tympani syndrome
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