Acoustic impedance


 * Reference for term: Musculoskeletal ultrasound - Holsbeeck Van, M. et al.
 * Technical definition: Measure of resistance of a medium to the transmission of sound.
 * Reference for definition: Ultrasound Physics and Instrumentation - Hedrick, W. et al.
 * Comment: The acoustic impedance is expressed as the product of acoustic velocity of the medium and the density of the medium. The acoustic impedance mismatch at the interface determines the amount fo reflection that occurs.