Abstract
Shear wave elasticity imaging can quantitatively estimate a stiffness map of biological tissues based on speckle-tracking shear wave propagation. However, current approaches cannot directly reconstruct elasticity properties in speckle-less or speckle-free regions, for example within the crystalline lens in ophthalmology. We propose an imaging sequence to reconstruct the elastic properties in speckle-free regions by sequentially launching shear waves with a laterally moving acoustic radiation force, and then detecting the displacement at a specific speckle-generating position. The imaging sequence was tested for both ultrasound and phase-sensitive optical coherence tomography imaging. Tissue-mimicking phantom studies were performed and results demonstrate that elastic properties can be imaged in speckle-free regions. This suggests that the method can potentially map the elasticity of the crystalline lens.
Original language | English |
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Title of host publication | 2015 IEEE International Ultrasonics Symposium, IUS 2015 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781479981823 |
DOIs | |
State | Published - 13 11 2015 |
Externally published | Yes |
Event | IEEE International Ultrasonics Symposium, IUS 2015 - Taipei, Taiwan Duration: 21 10 2015 → 24 10 2015 |
Publication series
Name | 2015 IEEE International Ultrasonics Symposium, IUS 2015 |
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Conference
Conference | IEEE International Ultrasonics Symposium, IUS 2015 |
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Country/Territory | Taiwan |
City | Taipei |
Period | 21/10/15 → 24/10/15 |
Bibliographical note
Publisher Copyright:© 2015 IEEE.
Keywords
- acoustic radiation force
- crystalline lens
- moving beam
- optical coherence elasticity imaging
- presbyopia