High-intensity focused ultrasounds (HIFUs), as a novel non-invasive surgery technology, have been used effectively for cancer therapy. In order to ensure the HIFU treatment safety, the acoustic pressure distributions and the size of the focal regions of HIFU fields need to be measured accurately. In this paper, the lateral sensitive and tip-sensitive all-silica fiberoptic Fabry–Perot ultrasonic hydrophone systems and the corresponding experimental setups are established to measure HIFU fields, respectively. The acoustic pressure distributions of the HIFU field along the X-axis, Y-axis, and Z-axis are compared in the degassed water by the lateral sensitive and tip-sensitive fiber-optic Fabry-Perot ultrasonic hydrophones. Experimental results show that the tip-sensitive configuration can measure the acoustic pressure distribution in the focal region with high accuracy than the lateral-sensitive configuration.
Accurately measuring the acoustic pressure distributions and the size of the focal regions of high-intensity focused ultrasound (HIFU) fields, as well as the temperature induced by the HIFUs, are significant for ensuring the efficiency and safety of treatments. In our previous work, a tip-sensitive all-silica fiber-optic Fabry–Perot (TAFOFP) ultrasonic hydrophone for measuring HIFU fields is developed. In this paper, we explore the possibility that utilizing the TAFOFP ultrasonic hydrophone to simultaneously measure the acoustic pressure of HIFU fields and the induced temperature. The TAFOFP ultrasonic hydrophone for simultaneously measuring the acoustic pressure and temperature is developed and the experiment setup for measuring the HIFU fields based on the developed TAFOFP ultrasonic hydrophone is established. The developed TAFOFP ultrasonic hydrophone is experimentally tested in the degassed water and tissue phantom to verify the possibility of simultaneously measuring the acoustic pressure and temperature. Experimental results show that the sensing system can simultaneously measure the acoustic pressure and temperature.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.