Comparison of different optimized irregular sparse 2D ultrasound arrays

Bakary Diarra, Emmanuel Roux, Herve Liebgott, Samikannu Ravi, Marc Robini, Piero Tortoli, Christian Cachard

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The role of 2D matrix arrays in the realization of real time 3D ultrasound imaging is crucial as the latter permit to acquire a complete volume. The lack of control systems for these arrays containing thousands of elements and the dimension of connection cables for such a number of elements are the main obstacles to the use of these technologies. The sparse array techniques present a solid candidate to solve these technological limitations but give rise to beam pattern deteriorations in terms of energy loss and unwanted lobes apparition. The irregular positioning of the array elements permits to drastically decrease the unwanted lobes while the energy loss may be compensated by increasing the element size [1][2]. However, as elements get larger, the directivity decreases. To solve this directivity reduction, we propose to combine elements of different sizes in such a manner that a broad directivity is maintained using small elements whereas the energy loss may be compensated by wide ones. Additionally, an innovative simulated annealing based algorithm [3] is used to refine the array beam profile when the active element number is set to 256. The results compared to those obtained by the basic non-grid array show significant improvement in the beam pattern.

Original languageEnglish
Title of host publication2016 IEEE International Ultrasonics Symposium, IUS 2016
PublisherIEEE Computer Society
Volume2016-November
ISBN (Electronic)9781467398978
DOIs
Publication statusPublished - Nov 1 2016
Event2016 IEEE International Ultrasonics Symposium, IUS 2016 - Tours, France
Duration: Sep 18 2016Sep 21 2016

Other

Other2016 IEEE International Ultrasonics Symposium, IUS 2016
CountryFrance
CityTours
Period9/18/169/21/16

Fingerprint

directivity
energy dissipation
lobes
simulated annealing
deterioration
cables
positioning
matrices
profiles

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Diarra, B., Roux, E., Liebgott, H., Ravi, S., Robini, M., Tortoli, P., & Cachard, C. (2016). Comparison of different optimized irregular sparse 2D ultrasound arrays. In 2016 IEEE International Ultrasonics Symposium, IUS 2016 (Vol. 2016-November). [7728414] IEEE Computer Society. https://doi.org/10.1109/ULTSYM.2016.7728414
Diarra, Bakary ; Roux, Emmanuel ; Liebgott, Herve ; Ravi, Samikannu ; Robini, Marc ; Tortoli, Piero ; Cachard, Christian. / Comparison of different optimized irregular sparse 2D ultrasound arrays. 2016 IEEE International Ultrasonics Symposium, IUS 2016. Vol. 2016-November IEEE Computer Society, 2016.
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Diarra, B, Roux, E, Liebgott, H, Ravi, S, Robini, M, Tortoli, P & Cachard, C 2016, Comparison of different optimized irregular sparse 2D ultrasound arrays. in 2016 IEEE International Ultrasonics Symposium, IUS 2016. vol. 2016-November, 7728414, IEEE Computer Society, 2016 IEEE International Ultrasonics Symposium, IUS 2016, Tours, France, 9/18/16. https://doi.org/10.1109/ULTSYM.2016.7728414

Comparison of different optimized irregular sparse 2D ultrasound arrays. / Diarra, Bakary; Roux, Emmanuel; Liebgott, Herve; Ravi, Samikannu; Robini, Marc; Tortoli, Piero; Cachard, Christian.

2016 IEEE International Ultrasonics Symposium, IUS 2016. Vol. 2016-November IEEE Computer Society, 2016. 7728414.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Diarra B, Roux E, Liebgott H, Ravi S, Robini M, Tortoli P et al. Comparison of different optimized irregular sparse 2D ultrasound arrays. In 2016 IEEE International Ultrasonics Symposium, IUS 2016. Vol. 2016-November. IEEE Computer Society. 2016. 7728414 https://doi.org/10.1109/ULTSYM.2016.7728414