Fig. 2From: Validation of brain parenchyma sonography as a marker of neurodegeneration in multiple sclerosisTranscranial sonography (TCS) image at axial plane, mesencephalic level of healthy control, showing the butterfly midbrain, surrounded by the highly echogenic basal cisterns, with intact raphe (continuous) (two arrows), both red nucleus (RN) also seen (white box)Back to article page