title: A new noninvasive technique for cardiac pressure measurement: resonant scattering of ultrasound from bubbles.
mesh_terms: D004562:Electrocardiography / Q000295:instrumentation; D006321:Heart / Q000502:physiology*; D008433:Mathematics; D008722:Methods; D055585:Physical Phenomena; D010825:Physics; D011312:Pressure; D014159:Transducers; D014463:Ultrasonography