Laser OptoAcoustic Tomography: Towards New Technology for Biomedical Diagnostics
Richard Su1, Sergey Ermilov2, Anton Liopo2
1TomoWave Laboratories, Houston, TX 77081, USA ; University of Houston, Houston TX 77004, USA.
Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
|September 12, 2014
Summary
Optoacoustic imaging uses laser pulses to create sound waves in tissue, enabling high-resolution imaging of absorbed light. This technology offers advanced biomedical applications for visualizing tissues and blood oxygenation.
Area of Science:
- Biomedical Optics
- Acoustic Imaging
- Medical Physics
Background:
- Optoacoustic imaging combines light and sound for high-resolution visualization.
- Key principles involve laser-induced acoustic waves in absorbing tissues.
- Advancements in transducer technology enable 2D and 3D imaging.
Purpose of the Study:
- To review the physical principles, technology, and applications of optoacoustic imaging.
- To highlight the enabling factors for the rapid development of this field.
- To discuss current and future perspectives in optoacoustic imaging.
Main Methods:
- Utilizing laser pulses to generate localized acoustic pressure in biological tissues.
- Detecting acoustic waves that propagate with minimal distortion.
- Reconstructing 2D and 3D maps of absorbed optical energy using optoacoustic signals.
- Employing scanning focused transducers and 2D/3D transducer arrays.
Main Results:
- High-resolution imaging of absorbed optical energy distribution is achievable.
- Modern systems support real-time 2D imaging and 3D imaging through scanning.
- Commercial development of 3D optoacoustic tomography (OAT) systems is underway.
Conclusions:
- Optoacoustic imaging is a rapidly developing field with significant biomedical potential.
- Applications include visualizing targeted agents and assessing blood oxygenation.
- Further technological advancements promise expanded clinical utility.
