The<unk>  is a scale used to diagnose the presence of a stroke in a patient. It tests three signs including facial droop, arm drift, and speech to find if patient is having a stroke and need more investigation. If any of the three tests shows abnormal findings, the patient may be having a stroke and should be transported to a hospital as soon as possible.
Cincinnati stroke scale
National Institutes of Health Stroke Scale
The Kurtzke Expanded Disability Status Scale 
Confusion MRI
Denver Scale
Cerebral angiography
Confusion CT
Brain mapping