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3D in vivo imaging with extended-focus optical coherence microscopy
Yu Chen1,2, Le A Trinh1,3, Jeff Fingler4
1Translational Imaging Center, University of Southern California, Los Angeles, 90089, CA.
Journal of Biophotonics
|April 19, 2017
Summary
We developed an extended-focus optical coherence microscopy (xf-OCM) system that significantly improves imaging depth for biological samples. This advancement allows for detailed 3D visualization of live specimens without invasive labels.
Area of Science:
- Biomedical optics
- Microscopy
- 3D imaging technologies
Background:
- Optical coherence microscopy (OCM) offers non-invasive, label-free 3D imaging of biological samples.
- Standard OCM faces limitations in imaging depth due to the trade-off between depth of focus and lateral resolution in Gaussian optics.
Purpose of the Study:
- To overcome the depth limitations of conventional OCM.
- To enhance the depth of focus (DOF) while maintaining high lateral resolution for improved 3D biological imaging.
Main Methods:
- Development of an extended-focus OCM (xf-OCM) system.
- Utilized quasi-Bessel beam illumination to achieve an extended DOF.
- Evaluated imaging performance with a lateral resolution of 1.6 μm.
Main Results:
- The xf-OCM system achieved an extended DOF of approximately 100 μm, a threefold increase compared to standard OCM.
- Maintained high lateral resolution for detailed structural identification in live animal samples.
- Demonstrated insensitivity to spherical aberrations, enhancing 3D imaging capabilities.
Conclusions:
- The developed xf-OCM system effectively extends imaging depth for label-free 3D biological studies.
- This technique provides superior visualization of biological structures in live samples.
- xf-OCM offers a promising tool for advancing research in live animal imaging.