Visualization and analysis of the scattering of high-intensity focused ultrasound at bone phantoms

Christoph Schaal; Divyadeep Upadhyay

doi:10.1117/12.2612964

19 April 2022 Visualization and analysis of the scattering of high-intensity focused ultrasound at bone phantoms

Proceedings Volume 12048, Health Monitoring of Structural and Biological Systems XVI; 120480Q (2022) https://doi.org/10.1117/12.2612964
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

High-intensity focused ultrasound (HIFU) has been studied for the purpose of developing a variety of medical therapies. Numerical and laboratory work has led to many clinical trials as well as first approved therapies, such as in the case of prostate cancer. However, little research has been performed to validate numerical simulations and in-vivo HIFU treatments in the presence of bones. To this end, recent advancements on visualization and optical measurements using schlieren techniques are presented in this work. In laboratory experiments, HIFU is induced in a tank filled with distilled water, and the incident waves are scattered at a bone phantom plate. Advanced filtering and computer vision techniques are adopted and their general feasibility is demonstrated for unobstructed and partially obstructed HIFU wave fields. In particular, it is shown that low-amplitude reflected wave peaks can be tracked despite their superposition with high-amplitude incident waves.

Citation Download Citation

Christoph Schaal and Divyadeep Upadhyay "Visualization and analysis of the scattering of high-intensity focused ultrasound at bone phantoms", Proc. SPIE 12048, Health Monitoring of Structural and Biological Systems XVI, 120480Q (19 April 2022); https://doi.org/10.1117/12.2612964

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