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KMID : 1137820150360010007
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의공학회지
2015 Volume.36 No. 1 p.7 ~ p.15
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Evaluation of Acoustic, Thermal, and Morphological Properties in the Egg White Phantom
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Kim Mi-Seon
Kim Ju-Young
Moon Dong-Jun
Noh Si-Cheol
Choi Heung-Ho
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Abstract
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The egg white phantom is a thermal lesion visualization phantom able to illustrate a thermal lesion. It is often used to evaluate the performance of HIFU and is less expensive than the BSA phantom. This study determined the optimal phantom composition for evaluated therapeutic ultrasound machines by varying the egg white concentration in the egg white phantom and demonstrated its utility as a therapeutic ultrasound phantom. The egg white phantom at varying egg white concentrations (10-40% in 10% intervals) was fabricated, and its thermal properties and acoustic properties were assessed. In addition, the size and shape of the formed lesion were compared between the egg white phantom and bovine liver tissue according to the electrical power. The results showed that 30% egg white phantom was optimal for the performance evaluation due to its thermal and acoustic properties. The generated thermal lesions formed sequentially as a cigar, ellipse, tadpole, and cone shapes according to the electrical power; a similar tendency was observed in the liver tissue. Hence, we conclude that the egg white phantom will prove useful in quantitatively evaluating the thermal effects of therapeutic ultrasound.
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KEYWORD
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Egg white phantom, Acoustic property, Heat property, Focused ultrasound, Thermal lesion
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