22 February 2011 Impulse-driven near-field radiofrequency thermoacoustic (NRT) tomography
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Herein we suggest and experimentally validate a novel thermoacoustic imaging method that relies on near-field exposure of the object to ultrashort impulses of safe radiofrequency energies. The physical rationale behind the Near-field Radiofrequency Tomography (NRT) is the well known ability of biological tissues to absorb a very significant portion of energy when closely coupled to radiofrequency and microwave sources. Compared to existing thermoacoustic imaging implementations, NRT offers a significantly simpler and cost-effective technology that uses high energy impulses instead of expensive and inefficient carrier-frequency amplification methods, making it possible to achieve significantly better imaging resolution without compromising thermoacoustic signal strength.
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Daniel Razansky, Stephan Kellnberger, Vasilis Ntziachristos, "Impulse-driven near-field radiofrequency thermoacoustic (NRT) tomography", Proc. SPIE 7899, Photons Plus Ultrasound: Imaging and Sensing 2011, 78993B (22 February 2011); doi: 10.1117/12.875281; https://doi.org/10.1117/12.875281

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