Influence of acoustic power on parietal thermometry during extracorporeal high-intensity focused ultrasound treatments

Francois Lacoste; Benoit Feuillu; Jacques Schlosser; Guy Vallancien

doi:10.1117/12.304347

2 April 1998 Influence of acoustic power on parietal thermometry during extracorporeal high-intensity focused ultrasound treatments

Francois Lacoste, Benoit Feuillu, Jacques Schlosser, Guy Vallancien

Author Affiliations +

Proceedings Volume 3249, Surgical Applications of Energy; (1998) https://doi.org/10.1117/12.304347
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States

Abstract

Objectives: Compare the muscular parietal heating during high intensity focused ultrasound (HIFU) at different acoustic power levels. Methods: 3 series of 100 acoustic pulses of same energy but variable power were applied in vivo on the muscular lumbar and abdominal walls in 4 pigs. The target volume was located 47 to 94 mm behind the skin. Two thermocouples were inserted into the muscular wall facing the focal point 10 - 15 m and 25 - 30 mm from the skin. The position of the treatment head was the same for the 3 series of acoustic pulses. The temperatures in the muscular wall were recorded during the HIFU treatment. Conclusion: During extracorporeal HIFU treatments, the muscular parietal heating is variable among individuals and increases with the acoustic power.

Citation Download Citation

Francois Lacoste, Benoit Feuillu, Jacques Schlosser, and Guy Vallancien "Influence of acoustic power on parietal thermometry during extracorporeal high-intensity focused ultrasound treatments", Proc. SPIE 3249, Surgical Applications of Energy, (2 April 1998); https://doi.org/10.1117/12.304347

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