Abstract
A novel technique of temperature measurement has been developed based on an acoustic‐inversion method (AIM). The temperature distribution caused by HIFU heating in tissue in vitro and in live pigs was measured by the thermo‐sensors consisting of seven probes with needle spacing as close as 1.5mm. Furthermore, the temperature measurements were performed by both thermo‐sensor and the AIM technique with HIFU or RF heating during animal experiments, and the accuracy of the AIM measurements was estimated to be ±3°C by comparison to the thermo‐sensor results. Finally, several results for HIFU temperature monitoring in clinic are presented, and further investigations concerning HIFU clinical uses (for example, thermal dose determination etc.) are suggested. This technique provides a noninvasive, accurate and reliable temperature monitoring to medical heat treatments such as HIFU.
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