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Article Dans Une Revue Scientific Reports Année : 2018

Experimental 3-D Ultrasound Imaging with 2-D Sparse Arrays using Focused and Diverging Waves

François Varray
Christian Cachard
Piero Tortoli
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Hervé Liebgott

Résumé

Three dimensional ultrasound (3-D US) imaging methods based on 2-D array probes are increasingly investigated. However, the experimental test of new 3-D US approaches is contrasted by the need of controlling very large numbers of probe elements. Although this problem may be overcome by the use of 2-D sparse arrays, just a few experimental results have so far corroborated the validity of this approach. In this paper, we experimentally compare the performance of a fully wired 1024-element (32 × 32) array, assumed as reference, to that of a 256-element random and of an " optimized " 2-D sparse array, in both focused and compounded diverging wave (DW) transmission modes. The experimental results in 3-D focused mode show that the resolution and contrast produced by the optimized sparse array are close to those of the full array while using 25% of elements. Furthermore, the experimental results in 3-D DW mode and 3-D focused mode are also compared for the first time and they show that both the contrast and the resolution performance are higher when using the 3-D DW at volume rates up to 90/second which represent a 36x speed up factor compared to the focused mode.
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Dates et versions

hal-01839963 , version 1 (16-07-2018)

Identifiants

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Emmanuel Roux, François Varray, Lorena Petrusca, Christian Cachard, Piero Tortoli, et al.. Experimental 3-D Ultrasound Imaging with 2-D Sparse Arrays using Focused and Diverging Waves. Scientific Reports, 2018, 8 (1), pp.9108 - 9108. ⟨10.1038/s41598-018-27490-2⟩. ⟨hal-01839963⟩
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