An Experimental Investigation on the Temperature Dependence of Ultrasonic Signal Characterization in a Phantom Tissue.


Demirkıran E., Küçüka M. S.

DOKUZ EYLÜL UNIVERSITY INTERNATIONAL SYMPOSIUM, Life Science Section SERIES ON GRADUATE RESEARCHES 2023, İzmir, Türkiye, 9 - 10 Kasım 2023, (Yayınlanmadı)

  • Yayın Türü: Bildiri / Yayınlanmadı
  • Basıldığı Şehir: İzmir
  • Basıldığı Ülke: Türkiye
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Thermal ablation techniques, such as ohmic heating, high-intensity ultrasonic heating, and other temperature-based methods, have shown promise in effectively destroying tumor tissues. However, their widespread adoption has been hindered due to the potential for collateral damage to neighboring healthy tissues. On the other hand, instant temperature measurement in and around the target area during thermal therapy will facilitate the application of such treatments. One method that can be used for temperature measurement in tissues is the pulse-echo method based on the variation of the flight time in the ultrasound signals returning from the target area. In this study, an agar phantom, prepared as a tissue-mimicking material, was heated homogeneously and by monitoring US waves in it, the temperature changes were measured with thermocouples. As a result, the signals obtained from the phantom were processed and the results pointed out that the change in flight time can be used to determine temperature change in the phantom.