What is a DAT scan and when is it needed?
A DAT scan is an imaging scan that allows the visualization of the dopamine system in the brain. It detects symptoms of Parkinson’s disease in the brain, a disorder that causes tremors and/or problems with movement and walking
Indications:
- Parkinson’s disease
- Lewy body dementia
- Tremor
What are the risks?
Please let the office know if you are pregnant and/or breastfeeding, as the radiotracers maybe harmful to a fetus.
The risk to other people is very low, so these scans are considered safe and effective ways to diagnose disease.
How do you prepare for a DAT scan?
- No restrictions
- Wear comfortable clothing
- Must be able to lie flat, there is a cushion for underneath your knees
- Claustrophobic - If you are claustrophobic please bring meds with you and a driver. You can get these meds from your ordering physician.
How does a DAT scan work?
Part 1 - 5 minutes - The patient is given Lugol’s solution to block the uptake of the iodine in the thyroid from the injection.
Part 2 - 5 minutes - 1 hour after drinking the Lugol’s solution, a nuclear medicine technologist starts an IV in your arm. A small amount of radioactive material is injected into the IV.
Part 3 - 45 minutes - 3 hours after the injection of the radioactive material, a SPECT scan of your brain is done. The SPECT scan is a 3D image of your brain, the cameras rotate around your head and this scan takes 36 minutes.
What should I expect after my DAT scan?
It usually take 24-48 hours for your doctor to receive a report. Drink plenty of fluids to help flush the radiotracer out of your body, what does not get flushed out of your body will decay out. There are no other restrictions.