Brain Pearls Table 1 Diffusion values of normal and pathological tissues in the brain. Normal Brain Tissue ADC µm 2 /ms Normal White Matter [ 107 ] 0.705±0.014 Deep Gray Matter [ 108 ] 0.75±0.03 Neuroepithelial Tumors ADC µm 2 /ms WHO grade I, Dysembryoplastic Neuroepithelial Tumor [ 18 ] 2.546±0.135 WHO grade I, Pilocytic Astrocytoma [ 18 ] 1.659±0.260 WHO grade II, Diffuse Astrocytoma [ 18 ] 1.530±0.148 WHO grade II, Oligodendroglioma [ 18 ] 1.455 WHO grade II, Ependymoma [ 1...