Signal processing in microwave-induced thermoacoustic tomography

Yuan Xu; Lihong V. Wang

doi:10.1117/12.429294

15 June 2001 Signal processing in microwave-induced thermoacoustic tomography

Yuan Xu, Lihong V. Wang

Proceedings Volume 4256, Biomedical Optoacoustics II; (2001) https://doi.org/10.1117/12.429294
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

Microwave-induced thermoacoustic tomography was explored to image biological tissues. Short microwave pulses irradiated tissues to generate acoustic waves by thermoelastic expansion. The microwave-induced thermoacoustic waves were detected with a focused ultrasonic transducer to obtain two-dimensional tomographic images of biological tissues. The dependence of the axial and the lateral resolutions on the spectra of the signals was studied. A self-adaptive filter was applied to the temporal piezoelectric signals from the transducer to increase the weight of the high-frequency components, which improved the lateral resolution, and to broaden the spectrum of the signal, which enhanced the axial resolution.

Citation Download Citation

Yuan Xu and Lihong V. Wang "Signal processing in microwave-induced thermoacoustic tomography", Proc. SPIE 4256, Biomedical Optoacoustics II, (15 June 2001); https://doi.org/10.1117/12.429294

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