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Three-dimensional Optical-resolution Photoacoustic Microscopy
Published on: May 3, 2011
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Review: optically-triggered phase-transition droplets for photoacoustic imaging
Qiyang Chen1,2, Jaesok Yu1,2, Kang Kim1,2,3,4
11Department of Medicine and Heart and Vascular Institute, Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA 15261 USA.
Biomedical Engineering Letters
|January 4, 2019
Summary
Optically-triggered phase-transition droplets offer enhanced contrast for photoacoustic and ultrasound imaging. Their vaporization dynamics are analyzed for improved design and continuous imaging applications.
Area of Science:
- Biomedical Optics
- Acoustics
- Materials Science
Background:
- Optically-triggered phase-transition droplets are emerging as advanced contrast agents for photoacoustic (PA) and ultrasound (US) imaging.
- These droplets provide superior contrast and hold potential for theranostic applications by integrating targeting molecules and therapeutics.
Purpose of the Study:
- To investigate the fundamental physics and dynamics of optical droplet vaporization.
- To assess the repeatability of the droplet vaporization-recondensation cycle for continuous PA imaging.
- To guide the rational design of phase-transition droplets for enhanced imaging performance.
Main Methods:
- Concurrent acoustical and ultrafast optical recordings were employed for detailed analysis.
- Experimental data were rigorously compared with a theoretical model to understand vaporization dynamics.
- The repeatability of the droplet vaporization-recondensation process was systematically studied.
Main Results:
- The study provides a methodical analysis of optical droplet vaporization dynamics.
- Repeatability of the vaporization-recondensation process was confirmed, enabling continuous imaging.
- Insights into the underlying physics of droplet behavior were gained.
Conclusions:
- Understanding droplet vaporization dynamics is crucial for optimizing their design.
- Optically-triggered phase-transition droplets show significant promise for advanced biomedical imaging and theranostics.
- Future research directions include innovative preclinical applications like sono-photoacoustic imaging and super-resolution PA imaging.
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