TY - GEN
T1 - Non-grid based elements positioning for optimal 2D array beams
AU - Diarra, Bakary
AU - Liebgott, Herve
AU - Cachard, Christian
AU - Tortoli, Piero
PY - 2012
Y1 - 2012
N2 - 2D matrix probes present a real capability for three dimensional ultrasound imaging. The main difficulties to implement these probes come from the need of using a huge number of elements and from the grating lobes linked to the element periodical disposition and from the sidelobes arising when this number is reduced. In this study, a new design technique is proposed and shown capable of considerably reducing the probe element number as well as the grating lobes and sidelobes level. The grating lobes, in particular, are reduced by placing the elements without any grid consideration. The sidelobes and the number of active elements are optimized by the simulated annealing. Using the new approach we reduce the element number by 28% (from 235 to 169) and obtain a grating lobe reduction by-10 dB and-20 dB in lateral and elevation direction, respectively.
AB - 2D matrix probes present a real capability for three dimensional ultrasound imaging. The main difficulties to implement these probes come from the need of using a huge number of elements and from the grating lobes linked to the element periodical disposition and from the sidelobes arising when this number is reduced. In this study, a new design technique is proposed and shown capable of considerably reducing the probe element number as well as the grating lobes and sidelobes level. The grating lobes, in particular, are reduced by placing the elements without any grid consideration. The sidelobes and the number of active elements are optimized by the simulated annealing. Using the new approach we reduce the element number by 28% (from 235 to 169) and obtain a grating lobe reduction by-10 dB and-20 dB in lateral and elevation direction, respectively.
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U2 - 10.1109/ULTSYM.2012.0388
DO - 10.1109/ULTSYM.2012.0388
M3 - Conference contribution
AN - SCOPUS:84882386662
SN - 9781467345613
T3 - IEEE International Ultrasonics Symposium, IUS
BT - 2012 IEEE International Ultrasonics Symposium, IUS 2012
T2 - 2012 IEEE International Ultrasonics Symposium, IUS 2012
Y2 - 7 October 2012 through 10 October 2012
ER -