David Fetzer, M.D., Assistant Professor in the Department of Radiology at UT Southwestern Medical Center, Dallas, TX, serves as Medical Director of Ultrasound at both UTSW and Parkland Health and Hospital System, chief of abdominal interventional services at Parkland, and director of the clinical and translational research lab CACTUS (Collaborative for Advanced Clinical Techniques in Ultrasound). He holds a B.S. in imaging science from the Rochester Institute of Technology. This background – combined with his interest in translational research – are the basis for his work in multimodality testing and quantitative imaging, particularly in hepatobiliary, genitourinary, and neck ultrasound. Dr. Fetzer’s current areas of interest include shear wave elastography and contrast-enhanced ultrasound, and how these emerging techniques fit into various management systems, particularly for chronic liver disease staging and liver cancer detection and diagnosis.