Measurement of Liver Elasticity with Acoustic Radiation Force Impulse (ARFI) Technology: An Alternative Noninvasive Method for Staging Liver Fibrosis in Viral Hepatitis - Goertz, R. S.; Zopf, Y.; Jugl, V.; Heide, R.; Janson, C.; Strobel, D.; Bernatik, T.; Haendl, T. (Ultraschall in der Medizin - European Journal of Ultrasound, 2010)