Methods and apparatus for scanning electromagnetically-induced thermoacoustic tomography
A microwave-induced thermoacoustic tomography system and method is provided to image biological tissue. Short microwave pulses irradiate tissue to generate acoustic waves by thermoelastic expansion. The microwave-induced thermoacoustic waves are detected with an ultrasonic transducer or transducer array. Each time-domain signal from the ultrasonic transducer is converted to a one-dimensional image along the acoustic axis of the ultrasonic transducer. Scanning the system perpendicularly to the acoustic axis of the ultrasonic transducer generates multi-dimensional images in real time without computational image reconstruction.
Wang, Lihong (2003). Methods and apparatus for scanning electromagnetically-induced thermoacoustic tomography. United States. Patent and Trademark Office; Texas A&M University. Libraries. Available electronically from