How It Works
The bioeffects produced by focused ultrasound are highly localized in a small region of tissue corresponding to the focal size of the ultrasound beam. The focal size for current focused ultrasound systems in clinical use range from 4 to 60 mm in length and 2 to 16 mm in diameter; focal spots – sonications – are typically cylindrical or ellipsoidal in shape.
These localized bioeffects are produced by either thermal or mechanical mechanisms of ultrasound interaction with the targeted tissue. These thermal and mechanical effects and their biological outcomes – bioeffects – are determined by the type of tissue (muscle vs. bone, for example) and the acoustic parameters (power, transmission duration, and mode – continuous vs. pulsed).
To find out more, click on each title below for information about the various effects that focused ultrasound can have on tissues:
Thermal Effects
Mechanical Effects
Biological Effects
The areas of medicine where this technology is currently being tested includes neurological, oncological, musculoskeletal, cardiovascular and more. A chart on the website shows where development stands for each clinical application in these categories.
For anyone interested in more detailed information, here are links from the Focused Ultrasound Foundation on the subject:
The direct download link is: http://www.sendspace.com/pro/dl/ksj4k8
The download page link is: http://www.sendspace.com/pro/ksj4k8
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