Physics of Diagnostic Ultrasound - part 2

[postlink]http://doc-clinical.blogspot.com/2011/06/physics-of-diagnostic-ultrasound-part-2.html[/postlink]

http://www.youtube.com/watch?v=O-sTrhl3Okoendofvid [starttext] Physics of Diagnostic Ultrasound - part 2 by james chan 2008 - 2009 this lecture covers

1. sound as a wave
2. properties of sound as defined by the medium it transfer 
3. acoustic impedance , reflection , refraction , transmission
4. acoustic scattering
5. attenuation [endtext]