TY - JOUR
T1 - Design of optimal 2-d nongrid sparse arrays for medical ultrasound
AU - Diarra, Bakary
AU - Robini, Marc
AU - Tortoli, Piero
AU - Cachard, Christian
AU - Liebgott, Herve
PY - 2013
Y1 - 2013
N2 - Three-dimensional imaging with 2-D matrix probes is one of the most exciting recent ultrasound innovations. Unfortunately, the number of elements of a 2-D matrix probe is often very high, and reducing this number deteriorates the beam properties. In this paper, we propose a new sparse-array design technique with irregular element positioning, which significantly reduces the number of active elements as well as the grating-lobe level. In particular, we introduce a new cost function for optimizing the weighting coefficients of the elements and a new annealing-based algorithm to compute the lowest cost solutions. Numerical simulations show substantial improvements over standard sparse arrays.
AB - Three-dimensional imaging with 2-D matrix probes is one of the most exciting recent ultrasound innovations. Unfortunately, the number of elements of a 2-D matrix probe is often very high, and reducing this number deteriorates the beam properties. In this paper, we propose a new sparse-array design technique with irregular element positioning, which significantly reduces the number of active elements as well as the grating-lobe level. In particular, we introduce a new cost function for optimizing the weighting coefficients of the elements and a new annealing-based algorithm to compute the lowest cost solutions. Numerical simulations show substantial improvements over standard sparse arrays.
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U2 - 10.1109/TBME.2013.2267742
DO - 10.1109/TBME.2013.2267742
M3 - Article
C2 - 23771307
AN - SCOPUS:84886646790
SN - 0018-9294
VL - 60
SP - 3093
EP - 3102
JO - IEEE Transactions on Biomedical Engineering
JF - IEEE Transactions on Biomedical Engineering
IS - 11
M1 - 6529099
ER -