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  4. Acoustic wave sparsely activated localization microscopy (AWSALM): super-resolution ultrasound imaging using acoustic activation and deactivation of nanodroplets
 
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Acoustic wave sparsely activated localization microscopy (AWSALM): super-resolution ultrasound imaging using acoustic activation and deactivation of nanodroplets
File(s)
1.5029874.pdf (1.23 MB)
Published version
Author(s)
Zhang, G
Harput, Sevan
Lin, Shengtao
Christensen-Jeffries, Kirsten
Leow, Chee Hau
more
Type
Journal Article
Abstract
Photo-activated localization microscopy (PALM) has revolutionized the field of fluorescence microscopy by breaking the diffraction limit in spatial resolution. In this study, “acoustic wave sparsely activated localization microscopy (AWSALM),” an acoustic counterpart of PALM, is developed to super-resolve structures which cannot be resolved by conventional B-mode imaging. AWSALM utilizes acoustic waves to sparsely and stochastically activate decafluorobutane nanodroplets by acoustic vaporization and to simultaneously deactivate the existing vaporized nanodroplets via acoustic destruction. In this method, activation, imaging, and deactivation are all performed using acoustic waves. Experimental results show that sub-wavelength micro-structures not resolvable by standard B-mode ultrasound images can be separated by AWSALM. This technique is flow independent and does not require a low concentration of contrast agents, as is required by current ultrasound super resolution techniques. Acoustic activation and deactivation can be controlled by adjusting the acoustic pressure, which remains well within the FDA approved safety range. In conclusion, this study shows the promise of a flow and contrast agent concentration independent super-resolution ultrasound technique which has potential to be faster and go beyond vascular imaging.
Date Issued
2018-07-02
Date Acceptance
2018-05-09
Citation
Applied Physics Letters, 2018, 113 (1), pp.014101-1-014101-5
URI
http://hdl.handle.net/10044/1/59994
URL
https://aip.scitation.org/doi/10.1063/1.5029874
DOI
https://www.dx.doi.org/10.1063/1.5029874
ISSN
0003-6951
Publisher
American Institute of Physics
Start Page
014101-1
End Page
014101-5
Journal / Book Title
Applied Physics Letters
Volume
113
Issue
1
Copyright Statement
©2018 Author(s). All article content, exceptwhere otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Cancer Research UK
Identifier
https://aip.scitation.org/doi/10.1063/1.5029874
Grant Number
EP/M011933/1
EP/N015487/1
22353
Subjects
Science & Technology
Physical Sciences
Physics, Applied
Physics
IN-VIVO
DIFFRACTION-LIMIT
VAPORIZATION
02 Physical Sciences
09 Engineering
10 Technology
Applied Physics
Publication Status
Published
Article Number
014101
Date Publish Online
2018-07-02
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