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Real-time 3-D Spectral Doppler Analysis with a Sparse Spiral Array

Alessandro Ramalli Enrico Boni Claudio Giangrossi Paolo Mattesini Alessandro Dallai Herve Liebgott 1 Piero Tortoli
1 Imagerie Ultrasonore
CREATIS - Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé
Abstract : 2-D sparse arrays may push the development of lowcost 3-D systems, not needing to control thousands of elements by expensive application-specific integrated circuits. However, there is still some concern about their suitability in applications, such as Doppler investigation, which inherently involve poor signal-tonoise ratios (SNRs). In this paper, a novel real-time 3-D pulsed-wave Doppler system, based on a 256-element 2-D spiral array, is presented. Coded transmission and matched filtering were implemented to improve the system SNR. Standard sonograms as well as multigate spectral Doppler (MSD) profiles, along lines that can be arbitrarily located in different planes, are presented. The performance of the system was assessed quantitatively on experimental data obtained from a straight tube flow phantom. An SNR increase of 11.4 dB was measured by transmitting linear chirps instead of standard sinusoidal bursts. For a qualitative assessment of the system performance in more realistic conditions, an anthropomorphic phantom of the carotid arteries was used. Finally, real-time B-mode and MSD images were obtained from healthy volunteers.
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Submitted on : Wednesday, January 20, 2021 - 9:24:24 AM
Last modification on : Monday, January 25, 2021 - 11:54:59 AM


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Alessandro Ramalli, Enrico Boni, Claudio Giangrossi, Paolo Mattesini, Alessandro Dallai, et al.. Real-time 3-D Spectral Doppler Analysis with a Sparse Spiral Array. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Institute of Electrical and Electronics Engineers, 2021, pp.1-1. ⟨10.1109/TUFFC.2021.3051628⟩. ⟨hal-03116046⟩



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