Mechanism of Action. 1  Nivolumab is a human immunoglobulin G4 (IgG4) monoclonal antibody that binds to the PD-1 receptor and blocks its interaction with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the immune response, including the anti-tumor immune response.
This means it's unlikely you'll know the results of your scan immediately. The radiologist will send a report to the doctor who arranged the scan, who will discuss the results with you. It usually takes a week or two for the results of an MRI scan to come through, unless they're needed urgently.
For the MRI, you will be comfortably positioned on the scan table. You will be offered your choice of earplugs or headphones to listen to music, depending on the part of your body that is being examined. Most MRI exams last between 30 and 60 minutes. If you are having multiple exams your test may take longer.