Term
| Structural Magnetic Resonance Imaging (MRI) |
|
Definition
|
|
Term
|
Definition
| Weighting with a contrast dye. Useful for evaluating brain tumor, ischemia, hemorrhage, and infection/inflammation. |
|
|
Term
|
Definition
| Diffusion Weighting, meaning without contrast agent. Useful for evaluating brain tumor, ischemia, stroke, changes in myelination, chronic epilepsy, scarring, and edema. |
|
|
Term
| Functional Magnetic Resonance Imaging (fMRI) |
|
Definition
| Scanning that detects changes in blood flow in the brain to see which areas are functionally active. Useful for detecting early stroke and cognitive disorders (i.e. dementia) |
|
|
Term
| Electroencephalogram (EEG) |
|
Definition
| Uses electrodes placed either above (in most cases) or below the scalp (rarely in humans), electrical activity in the brain is recorded. Useful for evaluating seizures, level of arousal, delirium, and brain death. |
|
|
Term
| Positron Emission Tomography (PET) |
|
Definition
| Measures metabolism by using radioactively tagged metabolic molecules that have been injected into the bloodstream. Useful for disorders that have metabolic problems, such as dementia, stroke, and brain tumor. |
|
|
