What do MRI Images mean?
Can you spot MS in these scans (below)
The are a number of non-standard imaging techniques that can give extra information, one is called diffusion (tensor) imaging. It can detected water molecules that are restricted in their movement into certain planes suggesting they are trapped with axons and so this technique measures axonal tracts seen in there healthy brains below.
Through performing numerous scans at different levels of the brain,you can build up a picture of nerve tracts.