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Article Dans Une Revue IEEE Transactions on Biomedical Engineering Année : 2013

Design of optimal 2-D non-grid sparse arrays for medical ultrasound

Résumé

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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Imagerie
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Dates et versions

hal-00850032 , version 1 (02-08-2013)

Identifiants

Citer

B. Diarra, M. Robini, P. Tortoli, C. Cachard, H. Liebgott. Design of optimal 2-D non-grid sparse arrays for medical ultrasound. IEEE Transactions on Biomedical Engineering, 2013, 60 (11), pp.3093-3102. ⟨10.1109/TBME.2013.2267742⟩. ⟨hal-00850032⟩
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