INRIM facilities for HIFU field characterization
نویسندگان
چکیده
HIFU power measurement At ultrasonic laboratory of INRIM (Istituto Nazionale di Ricerca Metrologica) it is possible to measure the ultrasonic power emitted by HIFU (High Intesity Focused Ultrasound) transducers. Two different measuring systems for the determination of ultrasonic power have been developed. Both systems are based on the radiation force balance method. The first system is based on a commercial balance (RFB System) and is used for ultrasonic power from 100 mW to 20 W. The ultrasonic power, P , is determined from the measurement of the force exerted on a target by the sound field generated by an ultrasonic source (figure 1). The second system is based on a submersible load cell (SLC), with full scale sensitivity of 50 g, and it is used for measuring of ultrasonic power from 15 W to 200 W.
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