Title :
Design of high-intensity focused ultrasound transmitters based on optoacoustic generation
Author :
Baac, Hyoung Won ; Ok, Jong G. ; Guo, L. Jay
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
We design focused ultrasound transmitters based on optoacoustic generation. Focused ultrasound is generated from a thin layer of light-absorbing source which is excited by pulsed laser beam. When compared to piezoelectric transducer, our new approach has advantages of high frequency generation and high geometrical gain. Material and geometrical considerations are discussed.
Keywords :
photoacoustic effect; ultrasonic focusing; ultrasonic transducers; ultrasonic transmission; HIFU transmitter design; high frequency generation; high geometrical gain; high intensity focused ultrasound transmitters; optoacoustic generation; pulsed laser beam excitation; thin light absorbing source layer; Acoustics; Laser beams; Laser excitation; Lenses; Optical transmitters; Polymers; Ultrasonic imaging; Focused ultrasound; High-frequency ultrasound; Optoacoustic generation;
Conference_Titel :
Ultrasonics Symposium (IUS), 2011 IEEE International
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1253-1
DOI :
10.1109/ULTSYM.2011.0584
