Photoacoustic tomography: In vivo imaging from organelles to organs
Open accessAbstract
Lights, Sound, Images: Optical microscopy can readily image thin samples such as cells, but thicker samples, such as tissue, are more difficult to image directly, because of the multiple scattering of light. Wang and Hu (p. 1458 ) review methods for imaging biological samples on length scales ranging from organelles to whole organs that rely on the photoacoustic effect—the excitation of ultrasonic pressure waves when light is absorbed by molecules in solution. The incident light can be focused and scanned across a sample in a microscopy mode to create ultrasound images, or the entire region of interest can be illuminated and the ultrasound waves analyzed with a computer algorithm in a tomography mode. Imaging studies can reveal changes in oxygen metabolism and gene expression and in image biomarkers and vasculature.
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After high-power laser irradiates absorption material, thermal effect likely causes mechanical vibration of surrounding medium, detectable as laser-induced acoustic wave.
“After the high-power laser irradiates the absorption material, the thermal effect is likely to cause mechanical vibration of the surrounding medium, which can be detected as the laser-induced acoustic wave [22].”
From Simultaneously Acquiring Optical and Acoustic Properties of Individual Microalgae Cells Suspended in Water (2022) · cites this paper as [22]
The frequency of the acoustic signal is related to the features of heat dissipation during light-microalgae interaction.
“The acoustic signal is triggered by a single sound source, and the frequency of the acoustic signal is related to the features of heat dissipation during the interaction between the light and microalgae.”
From Simultaneously Acquiring Optical and Acoustic Properties of Individual Microalgae Cells Suspended in Water (2022) · cites this paper as [22]
If a microalgae cell absorbs more light, the thermal effect is stronger and may have a higher acoustic frequency.
“If the microalgae cell absorbs more light, the thermal effect is much stronger, which may have a higher frequency [22].”
From Simultaneously Acquiring Optical and Acoustic Properties of Individual Microalgae Cells Suspended in Water (2022) · cites this paper as [22]
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Flagged first, then by citations
Research works printed but not linked: 5
- [1]Wang LV Wu H Biomedical Optics: Principles and Imaging Wiley Hoboken, NJ 2007
- [6]Wang LV IEEE J Sel Top Quantum Electron 14 171 2008 PMC2760980 19829746
- [27]Kostli KP IEEE J Sel Top Quantum Electron 7 918 2001
- [36]Wang LV Isaac Newton Institute for Mathematical Sciences: Inverse Problems Cambridge, U.K 2011
- [40]Zhang C J Biomed Opt in press
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“If the microalgae cell absorbs more light, the thermal effect is much stronger, which may have a higher frequency [22].”
Background
- Authors
- Wang, L. V., & Hu, S.
- Affiliations
- Washington University in St. Louis (US)
- Corresponding author
- Wang, Lihong V.
- Venue
- Science
- Published
- 2012-03-23
- Volume
- 335
- Issue
- 6075
- Pages
- 1458-1462
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- PMC
- PMC3322413
- OpenAlex
- W2030964111
- Cited by
- 4,331
- References
- 54
- Citations by year
- 2026: 218 · 2025: 255 · 2024: 258 · 2023: 268 · 2022: 334 · 2021: 372 · 2020: 371 · 2019: 398 · 2018: 393 · 2017: 353 · 2016: 335 · 2015: 317 · 2014: 251 · 2013: 167 · 2012: 38
- FWCI
- 21.47
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- CaltechAUTHORS (California Institute of Technology) (submittedVersion)
- Funders
- National Cancer Institute (R01CA157277, U54CA136398, R01CA134539, R01CA159959)
- National Institute of Biomedical Imaging and Bioengineering (R01EB008085, R01EB000712, R01EB010049)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Photoacoustic and Ultrasonic Imaging
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Spectroscopy Techniques in Biomedical and Chemical Research
- Physical Sciences › Engineering › Biomedical Engineering › Optical Coherence Tomography Applications
- Keywords
- photoacoustic tomography, multiscale imaging, in vivo imaging, depth-resolved imaging, spatial resolution, vascular imaging, hemodynamics, oxygen metabolism, biomarkers, gene expression imaging, molecular imaging, clinical application
- MeSH terms
- Animals, Cell Physiological Phenomena, Cells, Humans, Lasers, Physiological Phenomena, Tomography, Organelles, Genetic Phenomena, Photoacoustic Techniques
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