Contrast Echocardiography Ultrasound contrast agents were first used in conjunction with clinical echocardiography in the mid-1970s. Early agents consisted of either agitated saline or agitated saline stabilized with indocyanine green…
Specialized Echocardiographic Techniques and Methods The basic principles of interaction of ultrasound with tissue and blood and the basic mechanisms by which an image is created were discussed in Chapter…
Physics and Instrumentation Sound is a mechanical vibration transmitted through an elastic medium. When it propagates through air at the appropriate frequency, sound may produce the sensation of hearing. Ultrasound…
History of Echocardiography Harvey Feigenbaum, M.D. Many histories of diagnostic ultrasound, and cardiac ultrasound in particular, have been written.1, 2, 3, 4, 5 and 6 They all seem to address…
