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3-D super-resolution ultrasound imaging with a 2-D sparse array

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Title: 3-D super-resolution ultrasound imaging with a 2-D sparse array
Authors: Harput, S
Christensen-Jeffries, K
Ramalli, A
Brown, J
Zhu, J
Zhang, G
Leow, C
Toulemond, M
Boni, E
Tortoli, P
Eckersley, R
Dunsby, C
Tang, M-X
Item Type: Journal Article
Abstract: High-frame-rate 3-D ultrasound imaging technology combined with super-resolution processing method can visualize 3-D microvascular structures by overcoming the diffraction-limited resolution in every spatial direction. However, 3-D super-resolution ultrasound imaging using a full 2-D array requires a system with a large number of independent channels, the design of which might be impractical due to the high cost, complexity, and volume of data produced. In this study, a 2-D sparse array was designed and fabricated with 512 elements chosen from a density-tapered 2-D spiral layout. High-frame-rate volumetric imaging was performed using two synchronized ULA-OP 256 research scanners. Volumetric images were constructed by coherently compounding nine-angle plane waves acquired at a pulse repetition frequency of 4500 Hz. Localization-based 3-D super-resolution images of two touching subwavelength tubes were generated from 6000 volumes acquired in 12 s. Finally, this work demonstrates the feasibility of 3-D super-resolution imaging and super-resolved velocity mapping using a customized 2-D sparse array transducer.
Issue Date: 1-Feb-2020
Date of Acceptance: 20-Sep-2019
URI: http://hdl.handle.net/10044/1/73664
DOI: 10.1109/TUFFC.2019.2943646
ISSN: 0885-3010
Publisher: Institute of Electrical and Electronics Engineers
Start Page: 269
End Page: 277
Journal / Book Title: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Volume: 67
Issue: 2
Copyright Statement: IEEE is not the copyright holder of this material. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see http://creativecommons.org/licenses/by/4.0/
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/N015487/1
Keywords: 02 Physical Sciences
09 Engineering
Acoustics
Publication Status: Published
Online Publication Date: 2019-09-25
Appears in Collections:Physics
Photonics
Faculty of Natural Sciences



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