Female, 62 years old, with narcolepsy. No restricted diffusion is seen. A few punctate foci of T2 hyperintensity are seen scattered through the cerebral hemispheres and pons. No edema or mass effect is seen. There are no findings to suggest intracranial hemorrhage or any abnormal extra-axial fluid. Ventricular size and morphology are within normal limits. MRA images reveal no significant intracranial stenosis or occlusion. Fetal origin of the left PCA is noted.
No evidence is seen of acute ischemia or any other acute abnormality. A few scattered foci of signal abnormality are non-specific. No significant vascular abnormalities are detected.