Thousands of people are diagnosed with liver diseases, like Hepatitis C, every year. One of the major complications of Hepatitis C is fibrosis, when damage causes the liver tissue to stiffen. Previously, the only way to test for fibrosis was through needle biopsy, an uncomfortable and invasive procedure. Also, biopsies only sample a small portion of the liver, meaning that damage areas may be missed. But now, doctors at Mayo Clinic have developed a new imaging technique that allows them to determine the stiffness of the liver without needles.