For the PET/MRI scan, the participants will be injected with [18F]FTC-146 intravenously. After injection, simultaneous PET and MRI scans will be acquired using a hybrid PET/MRI scanner. Throughout scanning, participants will be monitored for blood pressure, temperature, heart rate and pulse oximetry. Participants will be asked to void their bladder as frequently as they can to reduce radiation exposure. Following the scan, participants will be contacted to check for adverse drug events, and any events will be recorded in the case report.