Subharmonic microbubble emissions for noninvasively tracking right ventricular pressures. - Dave, Jaydev K.; Halldorsdottir, Valgerdur G.; Eisenbrey, John R.; Raichlen, Joel S.; Ji-Bin Liu; McDonald, Maureen E.; Dickie, Kris; Shumin Wang; Corina Leung; Forsberg, Flemming (American Journal of Physiology: Heart & Circulatory Physiology, 2012)