How HIFU WORKS
High intensity focused ultrasound (HIFU)
The fundamental principle is analogous to using a magnifying glass to focus sunlight, generating burning heat. Focused ultrasound uses an acoustic lens to concentrate multiple intersecting beams of ultrasound precisely on a target in the body. Each individual beam passes through tissue with no effect. But at the focal point where the beams converge, the energy can have useful thermal or mechanical effects.