Estimation of thermal distribution in tissue-mimicking phantom made of carrageenan gel

To probe the temperature elevation effect caused by ultrasound, the use of a tissue-mimicking phantom was newly suggested. Carrageenan gel was adopted to realize not only the required transparency for visualization but also the acoustic characteristics similar to those of human tissue. To visualize...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2015-07, Vol.54 (7S1), p.7
Main Authors: Kim, Jungsoon, Jung, Jihee, Kim, Moojoon, Ha, Kanglyeol
Format: Article
Language:English
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Summary:To probe the temperature elevation effect caused by ultrasound, the use of a tissue-mimicking phantom was newly suggested. Carrageenan gel was adopted to realize not only the required transparency for visualization but also the acoustic characteristics similar to those of human tissue. To visualize the temperature elevation effect inside the phantom, thermochromic film with a critical temperature of discoloration was introduced. From the visualized image, the temperature elevation due to planar and focused ultrasound in the phantom was obtained quantitatively. To verify the suggested method, the bioheat equation was solved numerically by the Fourier transform method. The theoretical results show good agreement with experimental ones regarding the temperature distribution while plane and focused ultrasound was irradiated into the phantom.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.54.07HF23