A Novel Row-Column Addressed Stack Architecture for Enhanced Cardiac Imaging

Férin, Guillaume; Dumoux, Marie-Coline; Flesch, Martin; Montauban, Emmanuel; Lejeune, Agnes; Rosinski, Bogdan; Mateo, Tony; Porée, Jonathan; Sauvage, Jack; Dcffieux, Thomas; Pernot, Mathieu; Tanter, Mickaël; An, Ning

doi:10.1109/ultsym.2018.8579967

Cited by 3 publications

(1 citation statement)

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“…Such a transducer design was first proposed by Démoré et al (2009), who simulated the radiation pattern from an RCA where the elements were curved onto the surface of a hemi-sphere. A manufacturing technique for such arrays has been proposed (Ferin et al, 2018), but a simpler way of achieving diverging sound fields is the addition of a double-curved lens in front of a flat transducer, as proposed by Joyce and Lockwood (2014). The lens increased the field-of-view (FOV), but the authors also recognized that its addition introduced a non-trivial complexity when determining the propagation paths for beamforming images produced by the transducer.…”

Section: Introductionmentioning

confidence: 99%

Accurate prediction of transmission through a lensed row-column addressed array

Øygard

Audoin

Austeng

et al. 2022

The Journal of the Acoustical Society of America

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Using a diverging lens on a row-column array (RCA) can increase the size of its volumetric image and thus significantly improve its clinical value. Here, a ray tracing method is presented to predict the position of the transmitted wave so that it can be used to make beamformed images. The usable transmitted field-of-view (FOV) is evaluated for a lensed 128 + 128 element RCA by comparing the theoretic prediction of the emitted wavefront position with three-dimensional (3D) finite element simulation of the emitted field. The FOV of the array is found to be [Formula: see text] in the direction orthogonal to the emitting elements and 28.5°–51.2°, depending on depth and element position, for the direction lying along the element. Moreover, the proposed ray tracing method is compared with a simpler thin lens model, and it is shown that the improved accuracy of the proposed method can increase the usable transmitted FOV up to 25.1°.

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Section: Introductionmentioning

confidence: 99%