Volume 132, Issue 2, (February 2007) Correction    Gastroenterology  Volume 132, Issue 2, (February 2007) DOI: 10.1053/j.gastro.2007.01.026 Copyright © 2007 AGA Institute Terms and Conditions

Figure 2 (A) MR Elastography uses a combination of acoustic waves and phase-contrast MR imaging to provide a quantitative map of the stiffness of tissue, in units of kilopascals (kPa). This transverse MR elastogram of a normal liver shows that the mean stiffness of liver tissue is approximately 2 kPa. Recent data suggest that mean values of greater than 2.5 kPa correlate with the presence of hepatic fibrosis3. (B) This MR elastogram of a patient with biopsy-proven stage 3 fibrosis, shows that the average stiffness of liver tissue is over 5 kPa. The stiffness of the liver shows increased heterogeneity, with some areas measuring over 10 kPa (Images courtesy of Richard L. Ehman, MD). Gastroenterology 2007 132, DOI: (10.1053/j.gastro.2007.01.026) Copyright © 2007 AGA Institute Terms and Conditions