Figure 1: Results of diffusion tensor tractography for the medial lemniscus and spinothalamic tract of a patient with medullary infarction. (A) Diffusion weighted images at onset and T2-weighted magnetic resonance (MR) images at 6 weeks after onset show medullary infarctions in both pyramids and medical lemniscus areas (blue arrow). (B) Results of diffusion tensor tractography for the medial lemniscus pathway and spinothalamic tract at 6 weeks after onset. The left medial lemniscus pathway is thinner (orange arrows) than the right medial lemniscus pathway and those of a normal subject spinothalamic tract reveals a normal configuration in both hemispheres compared with those of a normal subject (68-year-old male) who recruited the same university hospital. (C) The medical lemniscus pathway and spinothalamic tract of a normal subject.