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Focused Ultrasound Thermometry: A Two-Dimensional Resistance Temperature Detector Array in a Tissue-Mimicking Material
IEEE Sensors Journal  (IF3.301),  Pub Date : 2021-09-29, DOI: 10.1109/jsen.2021.3116589
Nafra M. Samiudin, Inseok Yang, Yong Tae Kim, Il Doh

A two-dimensional resistance temperature detector (RTD) array sensor for the measurement of temperature distribution inside a tissue-mimicking material was proposed to validate focused ultrasound (FUS) devices. The fully two-dimensional $10\times10$ RTD array sensor with 1 mm inter-RTD distance was fabricated on the $2.5~ \boldsymbol {\mu } \text{m}$ thick film and placed inside the tissue-mimicking material. The measurement uncertainty for the RTD array was 0.18 K. The temperature distribution inside the phantom caused by a FUS transducer was measured and compared depending on the input power and focal plane. A tissue-mimicking phantom with an implanted RTD array can be applied to validate the performance and safety of both high- and low-intensity focused ultrasound (HIFU and LIFU) devices.