I was told that the MRI's are not sensitive enough to give an accurate measure of liver iron. The T2* tests are accurate, but liver MRI may not be. I have seen some absolutely ridiculous results reported, so I tend to agree.
One other thing that was mentioned repeatedly is that ferritin tests have a very limited value, and that is only for comparison to previous results. We need to work at getting Resonance to bring Ferriscan to India. I hope Tim St Pierre makes this a priority.