A NEW CALIBRATION SYSTEM FOR HIGH INTENSITY FOCUSED ULTRASOUND AT NIMT

摘要

The acoustic power measurement technique according to the conventional radiation force balance arrangement for investigating the High Intensity Focused Ultrasound (HIFU) Transducer is developed. The new calibration system used at National Institute of Metrology (Thailand), NIMT is designed to determine the total emitted power of HIFU transducer as identified in IEC 61161. The results of ultrasonic conductance (G) of HIFU will be described and be also compared with the standard method's results used at NIMT. All contributions of the uncertainty budget will be described and estimated.