聚焦超声作用下的超声透射相移测温方法研究

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中图分类号：TB9 文献标志码：A文章编号：1674-5124（2025）07-0164-08

Abstract： In ultrasound hyperthermia， it is of great significance to accurately measure and evaluate the temperature field inside the tissue under the action of focused ultrasound. In order to achieve non-contact measurement of the internal temperature field during focusedultrasound，a phase-shift temperature measurement experimental scheme for gel membrane was proposed. Combining with its experiments on sound velocitycalibration， internal temperature field simulation，and relevant calculations，an experimental method for non-destructive measurement of the internal temperature field of membranes under the action of focused ultrasound was developed.The experimental results of the gel phantom show that the average error of the method of detecting the phase shift of the ultrasonic transmission signal is 3.2% compared with the invasive measurement results of thermocouples， and the average error is 7.4% compared with the results of the colorchanging profile extraction method，and the comparison resultsare in good agreement，and the internal temperature field can be accurately measured without destroying the phantom. This experimental method of temperature measurement by detecting ultrasonic phase shift can provide an evaluation basis for the safety assessment of ultrasonic hyperthermia， and has important clinical application prospects. Keywords： focused ultrasound; non-destructive temperature measurement; gel phantom

0引言

近年来，随着微波热疗（microwaveablation，MVA）、射频热疗（radiofrequencyablation，RFA）以及高强度聚焦超声（high-intensity focused ultrasound，HIFU）等医疗技术的发展，无创测温技术逐渐成为一种重要的医疗检测手段。（剩余10602字）