My hepatologist in UC San Diego said today they are planning to purchase a non-invasive machine able to measure liver stiffness next year. Here's the manufacturer's announcement of the FDA approval:
http://www.businesswire.com/news/home/20120920005908/en/Innovative-Ultrasound-Company-SuperSonic-Imagine-Receives-FDA
I have not done an extended research yet, but here's an abstract about a clinical study of this machine:
http://www.ncbi.nlm.nih.gov/pubmed/21775051
So, if you live in US, ask your hepatologist about this next you see him/her. It might be available soon in your area.