If you decide to participate in the study you will be asked to come in for three visits.
Each visit will have three parts:
1. 60-minute cognitive test: We will conduct cognitive tests for about one hour before or after your MRI scan so we can see how well your brain is functioning. These tests will be on computer and paper and will be done with a research team member.
2. Finger prick blood test: We will test your level of red blood cells by pricking one finger on each hand with a small device and collecting one drop of blood. This will help us make sure we test your brain oxygen use correctly.
3. MRI scan of your brain: The MRI scan of your brain will take about one hour. You will be asked to lie flat on your back on a bed, which will be pushed into the MRI scanner until it is centered over your head. The MRI will involve placing a helmet-like device called a head coil around your head, which has extra magnets in it to give us detailed pictures of your brain. Your face will not be covered by the head coil. The scan includes sections that measures your brain oxygen use (CMRO2). This test measures the amount of oxygen flow to the brain through images. It is a non-invasive test that can be completed in a normal MRI scanner without any injections. Each of these sections will run for 10 minutes. During these scans you will be asked to hold your breath for a short period a few times, with a break in between each breath hold. If you cannot hold your breath for the whole time, we will just ask that you hold it for as long as you feel comfortable.
How understandable was the trial content above?
Hard to understand
Easy to understand
