| A | B |
|---|
| PET | Used mainly for metabolic disorders |
| MRI | Uses radiofrequency waves-no radiation |
| CT | 3D views of x-rays |
| SPECT | The most precise |
| LP | May be used to relieve pressure or give meds |
| EEG | Records electrical activity of the brain |
| EMG | Needle inserted into muscle |
| Hand grips | To assess muscle strength equality |
| Pupil response | Assess equality and briskness of constriction |
| LOC | Assess alertness and orientation |
