Non-grid based elements positioning for optimal 2D array beams

Bakary Diarra; Herve Liebgott; Christian Cachard; Piero Tortoli

doi:10.1109/ULTSYM.2012.0388

Non-grid based elements positioning for optimal 2D array beams

Bakary Diarra, Herve Liebgott, Christian Cachard, Piero Tortoli

Electrical, Computer & Telecommunications Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	2012 IEEE International Ultrasonics Symposium, IUS 2012
DOIs	https://doi.org/10.1109/ULTSYM.2012.0388
Publication status	Published - Dec 1 2012
Event	2012 IEEE International Ultrasonics Symposium, IUS 2012 - Dresden, Germany Duration: Oct 7 2012 → Oct 10 2012

Other

Other	2012 IEEE International Ultrasonics Symposium, IUS 2012
Country	Germany
City	Dresden
Period	10/7/12 → 10/10/12

All Science Journal Classification (ASJC) codes

Acoustics and Ultrasonics

Access to Document

10.1109/ULTSYM.2012.0388

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Cite this

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title = "Non-grid based elements positioning for optimal 2D array beams",

abstract = "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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AU - Diarra, Bakary

AU - Liebgott, Herve

AU - Cachard, Christian

AU - Tortoli, Piero

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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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