TY - GEN
T1 - Separable beamforming for 3-D synthetic aperture ultrasound imaging
AU - Yang, Ming
AU - Sampson, Richard
AU - Wenisch, Thomas F.
AU - Chakrabarti, Chaitali
PY - 2013
Y1 - 2013
N2 - Recently, there has been great interest in 3-D ultrasound imaging, but power constraints have precluded practical implementation of highresolution 3-D ultrasound in handheld imaging platforms. In this paper, we propose a separable beamforming procedure for subaperturebased 3-D synthetic aperture ultrasound systems that drastically reduces computational (and hence power) requirements. Separable beamforming approximates 2-D array beamforming through a series of 1-D beamforming operations. Our proposed method is based on a separable delay decomposition method that minimizes phase error. We show that the proposed separable system achieves 19- fold complexity reduction while producing images with contrastto- noise ratio comparable to that of non-separable systems. Furthermore, we propose an online iterative delay calculation method that substantially reduces storage requirements. We briefly describe how the separable beamformer can be implemented in the context of Sonic Millip3De, our recently proposed hardware accelerator for the digital front-end of a 3-D ultrasound system.
AB - Recently, there has been great interest in 3-D ultrasound imaging, but power constraints have precluded practical implementation of highresolution 3-D ultrasound in handheld imaging platforms. In this paper, we propose a separable beamforming procedure for subaperturebased 3-D synthetic aperture ultrasound systems that drastically reduces computational (and hence power) requirements. Separable beamforming approximates 2-D array beamforming through a series of 1-D beamforming operations. Our proposed method is based on a separable delay decomposition method that minimizes phase error. We show that the proposed separable system achieves 19- fold complexity reduction while producing images with contrastto- noise ratio comparable to that of non-separable systems. Furthermore, we propose an online iterative delay calculation method that substantially reduces storage requirements. We briefly describe how the separable beamformer can be implemented in the context of Sonic Millip3De, our recently proposed hardware accelerator for the digital front-end of a 3-D ultrasound system.
KW - 2-D array
KW - Hardware implementation
KW - Separable beamforming
KW - Separable delay
UR - http://www.scopus.com/inward/record.url?scp=84896453911&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84896453911&partnerID=8YFLogxK
U2 - 10.1109/sips.2013.6674506
DO - 10.1109/sips.2013.6674506
M3 - Conference contribution
AN - SCOPUS:84896453911
SN - 9781467362382
T3 - IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation
SP - 207
EP - 212
BT - 2013 IEEE Workshop on Signal Processing Systems, SiPS 2013
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2013 IEEE Workshop on Signal Processing Systems, SiPS 2013
Y2 - 16 October 2013 through 18 October 2013
ER -