> Contact
> Homepage
> Site map
> Links

About HIFU
  What is HIFU?
  History
  Physical Principles
  Creation of a Lesion
About Ablatherm
Clinical Information
Clinical Results
Clinical Trials


Published Abstracts
& Articles
Video Clips
 You are here : Physicians > HIFU - Ablatherm > About HIFU > Physical Principles
Ultrasound wave emission is based on transducer vibration. This results in dilatation and contraction modification of acoustical pressure. The acoustical pressure creates tissue movement (dilatation and contraction) which amplitude is directly related to the pressure level. As the tissue response is not perfectly elastic, energy is lost and converted into heat.

Focused Ultrasound Waves

mag As for a magnifying glass with the sunlight, when the energy is concentrated in a single point, the temperature rizes rapidly.

By using a spherical shaped transducer, the ultrasound beam is concentrated on the transducer focus point, resulting in a maximum of pressure concentrated at this point. As tissue heating is directly related to pressure maximum, the necrotic lesion is formed at the transducer focus.
® Ablatherm is a registered trademark of EDAP.
© Copyright 2007 EDAP. All rights reserved.