CT Brain Perfusion
This is a specialized CT of the brain used to evaluate blood flow to the parenchyma of the brain in the setting of suspected ischemia and stroke.
CT Brain Perfusion:
Indications
- Ischemia
- Stroke
Contrast
- A dose of 50cc non-ionic contrast must be given. This is done through a large-bore IV, usually in the antecubital fossa.
Preparation
With Contrast:
- Only one CT contrast study should be scheduled within a 48 hour period.
- BUN and creatinine must be done within 72 hours of the scan.
- Nothing but clear liquid after midnight before the scan.
- NPO four hours prior to exam (no food or drink).
Anesthesia
- Anesthesia is generally not required, but may be indicated depending on the patient.
- Anesthesia on these studies always needs to be authorized by an imaging physician.