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Coherent frequency-domain microwave-induced thermoacoustic (TA) imaging is investigated as an alternative to the traditional pulsed-based TA imaging approaches that use extremely high-energy short excitation pulses, often produced by vacuum RF sources or spark-gap generators. It is shown that under peak-power limitation of the RF source, dictated by the goals of form factor and portability of this...
Microwave-induced thermoacoustic (TA) imaging combines the soft-tissue contrast of microwave signals with the resolution of ultrasound (US) imaging without posing any ionizing radiation. Prior work uses short but powerful pulses from a large vacuum source to excite tissue and requires an output power in excess of several kW to achieve sufficient SNR. This poses safety concerns as well as to render...
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