High-definition fiber tracking is a way to use images from MRI scans to look inside your body. It’s like looking at an X-ray picture, but pictures from an MRI scan show more detail. With high-definition fiber tracking, doctors can look at the fibers in your brain or body that connect different parts. This helps them see which parts of your body or brain might be working together, and which might be having problems. These pictures can help them diagnose problems and make treatments.