Design of optimal 2-d nongrid sparse arrays for medical ultrasound

Bakary Diarra, Marc Robini, Piero Tortoli, Christian Cachard, Herve Liebgott

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)


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.

Original languageEnglish
Article number6529099
Pages (from-to)3093-3102
Number of pages10
JournalIEEE Transactions on Biomedical Engineering
Issue number11
Publication statusPublished - Nov 4 2013

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering


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