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Tissue temperature monitoring using thermoacoustic and photoacoustic techniques

Pramanik, Manojit and Erpelding, Todd N. and Jankovic, Ladislav and Wang, Lihong V. (2010) Tissue temperature monitoring using thermoacoustic and photoacoustic techniques. In: Photons Plus Ultrasound: Imaging and Sensing 2010. Proceedings of SPIE. No.7564. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 75641Y. ISBN 9780819479600. https://resolver.caltech.edu/CaltechAUTHORS:20180918-140709052

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Abstract

Real-time temperature monitoring with high spatial resolution (~1 mm) and high temperature sensitivity (1 °C or better) is needed for the safe deposition of heat energy in surrounding healthy tissue and efficient destruction of tumor and abnormal cells during thermotherapy. A temperature sensing technique using thermoacoustic and photoacoustic measurements combined with a clinical Philips ultrasound imaging system (iU22) has been explored in this study. Using a tissue phantom, this noninvasive method has been demonstrated to have high temporal resolution and temperature sensitivity. Because both photoacoustic and thermoacoustic signal amplitudes depend on the temperature of the source object, the signal amplitudes can be used to monitor the temperature. The signal is proportional to the dimensionless Grueneisen parameter of the object, which in turn varies with the temperature of the object. A temperature sensitivity of 0.5 °C was obtained at a temporal resolution as short as 3.6 s with 50 signal averages.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.842139DOIArticle
ORCID:
AuthorORCID
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2010 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was sponsored by National Institutes of Health grants No. R01 EB000712, No. R01 NS46214 (Bioengineering Research Partnerships), No. R01 EB008085, and No. U54 CA136398 (Network for Translational Research). We thank John Dean, Victor Gornstein, and Adam Schleicher for modifying the Philips iU22 ultrasound imaging system used for thermoacoustic imaging. LVW has a financial interest in Microphotoacoustics, Inc. and Endra, Inc., which, however, did not support this work. TNE and LJ are employees of Philips Research.
Funders:
Funding AgencyGrant Number
NIHR01 EB000712
NIHR01 NS46214
NIHR01 EB008085
NIHU54 CA136398
Subject Keywords: thermoacoustics, photoacoustics, temperature sensing, tissue phantom, tissue temperature, ultrasound array system
Series Name:Proceedings of SPIE
Issue or Number:7564
Record Number:CaltechAUTHORS:20180918-140709052
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180918-140709052
Official Citation:Manojit Pramanik, Manojit Pramanik, Todd N. Erpelding, Todd N. Erpelding, Ladislav Jankovic, Ladislav Jankovic, Lihong V. Wang, Lihong V. Wang, } "Tissue temperature monitoring using thermoacoustic and photoacoustic techniques", Proc. SPIE 7564, Photons Plus Ultrasound: Imaging and Sensing 2010, 75641Y (23 February 2010); doi: 10.1117/12.842139; https://doi.org/10.1117/12.842139
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89719
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:19 Sep 2018 23:24
Last Modified:03 Oct 2019 20:18

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