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A therapeutic ultrasonic focusing probe, operating at 7,31 MHz, is described. It is able to produce in a focal zone <; 1 mm3 an acoustic intensity (time averaged spatially averaged) up to 1500 W/cm2. Applied in vitro, it shows its ability to induce thermal damage lesions with temperatures of about 70°C under appropriate exposure conditions.
Engineering in Medicine and Biology Society, 1992 14th Annual International Conference of the IEEE (Volume:1 )
Date of Conference: Oct. 29 1992-Nov. 1 1992