TY - GEN
T1 - Super-resolution ultrawideband ultrasound imaging using focused frequency time reversal music
AU - Foroozan, Foroohar
AU - Sadeghi, Parastoo
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/8/4
Y1 - 2015/8/4
N2 - We propose a super-resolution image reconstruction method which uses focused frequency time reversal (FFTR) matrices to focus in frequency for ultrawideband (UWB) ultrasound signals, as well as time reversal MUltiple SIgnal Classification (MUSIC) algorithm to focus spatially on the target location. Our combined method, which we refer to as FFTR-MUSIC, is motivated by the pressing need to improve the resolution of diagnostic ultrasound systems. Compared with the TR matched filter (TRMF) and incoherent TR-MUSIC approaches, our proposed method has lower computational complexity, higher visibility, higher robustness against noise, and higher accuracy for imaging point targets when the targets are closely located. Our simulation results show that under mild speckle and noise conditions, the FFTR-MUSIC can resolve objects less than 200 μm.
AB - We propose a super-resolution image reconstruction method which uses focused frequency time reversal (FFTR) matrices to focus in frequency for ultrawideband (UWB) ultrasound signals, as well as time reversal MUltiple SIgnal Classification (MUSIC) algorithm to focus spatially on the target location. Our combined method, which we refer to as FFTR-MUSIC, is motivated by the pressing need to improve the resolution of diagnostic ultrasound systems. Compared with the TR matched filter (TRMF) and incoherent TR-MUSIC approaches, our proposed method has lower computational complexity, higher visibility, higher robustness against noise, and higher accuracy for imaging point targets when the targets are closely located. Our simulation results show that under mild speckle and noise conditions, the FFTR-MUSIC can resolve objects less than 200 μm.
KW - Focusing Frequency Matrices
KW - MUSIC
KW - Time Reversal
KW - UWB
KW - Ultrasound Imaging
UR - http://www.scopus.com/inward/record.url?scp=84946081059&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2015.7178097
DO - 10.1109/ICASSP.2015.7178097
M3 - Conference contribution
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 887
EP - 891
BT - 2015 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2015 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 40th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2015
Y2 - 19 April 2014 through 24 April 2014
ER -