How work a therapeutic ultrasonic ?

[nando]

Technicaly, how work a therapeutic ultasound equipment?. I see, these equipments working in 1MHz or 3MHz frcuence, but what frecuence or signal supply the piezzoelectric cristal quarz? any informatión about this tip, please send me to infophoenix@tutopia.com

Very Thanks

 

[jbartos]

Suggestion: Visit

http://www.masters.com.au/ultrasound/

http://www.mettlerelec.com/ultrasnd.html

http://bul.eecs.umich.edu/research/nlulco/spie97.shtml

http://www.pamia.org/techtips/ttusprobes.html

etc. for more info