Three-Dimensional Geometry of Collagenous Tissues by Second Harmonic Polarimetry
- Univ. of California, Davis, CA (United States). School of Medicine, Department of Neurological Surgery
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Medical Technology Program; ABB Corporate Research, ABB Switzerland Ltd., Baden-Dattwil (Switzerland)
- Univ. of California, Davis, CA (United States). College of Engineering, Department of Electrical and Computer Engineering
Collagen is a biological macromolecule capable of second harmonic generation, allowing label-free detection in tissues; in addition, molecular orientation can be determined from the polarization dependence of the second harmonic signal. Previously we reported that in-plane orientation of collagen fibrils could be determined by modulating the polarization angle of the laser during scanning. We have now extended this method so that out-of-plane orientation angles can be determined at the same time, allowing visualization of the 3-dimensional structure of collagenous tissues. This approach offers advantages compared with other methods for determining out-of-plane orientation. First, the orientation angles are directly calculated from the polarimetry data obtained in a single scan, while other reported methods require data from multiple scans, use of iterative optimization methods, application of fitting algorithms, or extensive post-optical processing. Second, our method does not require highly specialized instrumentation, and thus can be adapted for use in almost any nonlinear optical microscopy setup. It is suitable for both basic and clinical applications. We present three-dimensional images of structurally complex collagenous tissues that illustrate the power of such 3-dimensional analyses to reveal the architecture of biological structures.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1395469
- Journal Information:
- Scientific Reports, Vol. 7, Issue 1; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Collagen Organization Within the Cartilage of Trpv4 −/− Mice Studied with Two‐Photon Microscopy and Polarized Second Harmonic Generation
|
journal | October 2019 |
Quantification of collagen fiber structure using second harmonic generation imaging and two‐dimensional discrete Fourier transform analysis: Application to the human optic nerve head
|
journal | January 2019 |
Challenges and opportunities in clinical translation of biomedical optical spectroscopy and imaging
|
journal | March 2018 |
Whole-Section Tumor Micro-Architecture Analysis by a Two-Dimensional Phasor-Based Approach Applied to Polarization-Dependent Second Harmonic Imaging
|
journal | June 2019 |
Similar Records
Measurement of the Second Order Non-linear Susceptibility of Collagen using Polarization Modulation and Phase-sensitive Detection
Imaging Collagen Orientation Using Polarization-Modulated Second Harmonic Generation