what everyone else said. plus RICE (Rest Ice Compression Elevation) after every ride, every walk, every trainer session. Ice helps healing a LOT.
You might want to as your PT to check for muscle adhesions and scar tissue build up. It affects how well the muscle works and can cause a lot of pain. I've been getting ART massage and Graston Technique on problem areas in my right quad and IT band and both have helped immensely. It hurts like hell, but its worth it.
Lastly, you don't NEED to get an MRI unless its a sharp pain. azfiddle is right, a talented PT/chiropractor can tell a lot about what's wrong with a hands on exam.
'You can't always get what you want. But if you try sometimes, you'll find you get what you need.' - Mick & Keith