Current and future applications of magnetic resonance imaging and spectroscopy of the brain in hepatic encephalopathy

Figure 4 Color fractional anisotropy (FA) image from a 44 year-old healthy male volunteer. Diffusion tensor imaging (DTI) performed on a 3T Philips Intera^TM using 32 different directions of diffusion sensitization. The different colors represent the principle diffusion directions and hence the direction of the white matter tracts: green represents anterior-posterior, blue represents caudo-cranial, red represents transverse. FA maps were generated using DTI studio version 2.1^©, (Jiang and Mori, Johns Hopkins University, MD, USA).