Clinical question: Rule out abnormality in patient with upper motor neuron signs (and lower motor). Signs and symptoms: Suspect ALS. Nonenhanced brain MRI:No diffusion-weighted abnormalities.There is no detectable acute intracranial process.Unremarkable cerebral cortex, cortical sulci, ventricular system, CSF spaces and brain myelination is stated age.The signal void of major intracranial arterial branches are identified.The signal intensity of the intracranial venous sinuses are within normal.Unremarkable calvarium, orbits, paranasal sinuses and mastoid air cells.
Unremarkable nonenhanced brain MRI.