Facial nerve imaging intensity scoring system 3D T1W Fast Spin Echo (FSE) imaging at level of pons and internal auditory canals in a 38-year-old female. Images magnified for display. Signal intensity was assigned a value 0–3 (0, less than signal of the brain stem; 1, intensity of brain stem parenchyma; 2, signal intensity between brain stem and subcutaneous fat; 3, intensity of fat).