The affection on the tissue lesions of difference frequency in dual-frequency high-intensity focused ultrasound
Pei Z He1, Rong M Xia, Shi M Duan
1Department of Biomedical Engineering, Shanghai Jiaotong University, Shanghai 200030, China. hejia@sjtu.org
Abstract:
The lesions induced by dual-frequency high-intensity focused ultrasound (HIFU) in freshly excised porcine livers were investigated and compared with the lesions induced by conventional single-frequency HIFU. The results have shown that using different exposure time resulted in lesions of different sizes in both dual-frequency and single-frequency HIFU modes at the same intensity level (ISAL = 808 W cm(-2)), but the dimensions of lesions in dual-frequency mode were obviously larger than those in single-frequency mode. A much possible explanation was suggested for the results and the possibilities of applications in the future were also discussed in brief.
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