Ex vivo thermoacoustic imaging over large fields of view with 108 MHz irradiation. IEEE Trans Biomed Eng 2011 Aug;58(8)
Date
03/23/2011Pubmed ID
21421431DOI
10.1109/TBME.2011.2128319Scopus ID
2-s2.0-79960743244 (requires institutional sign-in at Scopus site) 38 CitationsAbstract
Thermoacoustic signals are generated over a large field of view by 900 ns TE10 pulses with 108 MHz carrier frequency. Test specimens selectively absorb the TE10 pulse energy producing rapid thermal expansions that generate ultrasonic pulses. 108 MHz irradiation provides excellent depth penetration in soft tissue, allowing blood and physiologic saline to generate strong signals. Thermoacoustic signal generation from a depth of several cm is well above our systems noise floor. Rotating the test specimen provides single-slice tomographic signal encoding. Filtered back-projection reconstruction yields images over a 6.4 cm field of view. Reconstructions of tissue mimicking prostate phantoms and fresh porcine kidney tissue are presented.
Author List
Eckhart AT, Balmer RT, See WA, Patch SKAuthor
Sarah K. Patch PhD Associate Professor in the Physics department at University of Wisconsin - MilwaukeeMESH terms used to index this publication - Major topics in bold
AlgorithmsAnimals
Elasticity Imaging Techniques
In Vitro Techniques
Kidney
Phantoms, Imaging
Photoacoustic Techniques
Reproducibility of Results
Sensitivity and Specificity
Swine
Thermography
