http://www.drgdiaz.com/intro.shtml

• Introduction
• Stress, strain and Hookes Law
• Wave-motion
• Longitudinal pressure waves
• Energy
• Reflection and refraction
• Absorption and dispersion
• Non-linear effects
• Acoustic radiation fields: the plane wave transducer
• References
• Derivation of the wave equation
• One-dimensional derivation of equation for longitudinal wave motion in an elastic medium
• About this document ...

http://ultrasound.ucsf.edu/USCases.html

http://marr.bsee.swin.edu.au/~dtl/het408/ultrasound/ultrasound.html

http://www.bcc.ctc.edu/ultrasound/

http://brighamrad.harvard.edu/education/online/US/

http://www.diagnosticultrasound.yourmd.com/