3-D super-resolution ultrasound imaging with a 2-D sparse array
File(s)
Published version
Author(s)
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.
Date Issued
2020-02-01
Date Acceptance
2019-09-20
Citation
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2020, 67 (2), pp.269-277
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/
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/N015487/1
Subjects
02 Physical Sciences
09 Engineering
Acoustics
Publication Status
Published
Date Publish Online
2019-09-25