If you have the symptoms of tendinitis, your doctor may order an ultrasound or MRI scans to help determine the severity of damage to a tendon, but these are usually unnecessary for newly diagnosed cases.nly gradually will you begin to exercise the tendon itself. Your program may also include eccentric exercises, in which you gradually strengthen the muscle while stretching, stopping at the first sign of pain. You may also work into easy stretching exercises, done several times a day.