Abstract 12046: ARFI Ultrasound Elastography Measures Isovolumic Relaxation Time Constant for Assessment of Diastolic Function - Vejdani-Jahromi, Maryam; Freedman, Jenna; Joong-Kim, Young; Osborn, Jenna; Trahey, Gregg; Wolf, Patrick (Circulation (New York, N.Y.), 2016)