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RadiologyInfo: Vascular Ultrasound - http://www.radiologyinfo.org/en/info.cfm?pg=vascularus
Explains what patients might experience, how to prepare for exams, and benefits vs. risks. |
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Doppler Ultrasound - http://ej.rsna.org/ej3/0079-98.fin/doppler.htm
The Doppler effect is a change in the frequency of a wave, resulting from motion of the wave source or receiver, or in the case of a reflected wave, motion of the reflector. In medicine, Doppler US is used to detect and measure blood flow, and the major reflector is the red blood cell. |
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Transcranial Doppler Ultrasound - http://www.mcg.edu/neurology/Research/sicklecell/descTranscranial.htm
Information about the a safe, reliable, and relatively inexpensive technology for measuring cerebrovascular blood velocities by Medical College of Georgia. |
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Measuring blood flow acutely with ultrasonic flowmeters - http://www.physiology.com/agar.html
paper |