My husband went to er we thought he had a stroke they did mri and said bell's palsy but he said his head pounding is this normal, if stroke mri tell

DWI-diffusion weight: A specific type of MRI, called DWI (Diffusion Weighted imaging) or DTI (Diffusion Tensor) is generally considered the most sensitive test for stroke; however, it's unclear if that was done. Pounding, throbbing headaches can be from a stroke (unlikely here), or aneurysm, or hypertension, or tension headache. Talk to ur neurologist abt all Sx & diagnosis. Persistent headaches r not "normal" if new.