Functional optical coherence tomography: principles and progress.
In the past decade, several functional extensions of optical coherence tomography (OCT) have emerged, and this review highlights key advances in instrumentation, theoretical analysis, signal processing and clinical application of these extensions. We review five principal extensions: Doppler OCT (DOCT), polarization-sensitive OCT (PS-OCT), optical coherence elastography (OCE), spectroscopic OCT (SOCT), and molecular imaging OCT. The former three have been further developed with studies in both ex vivo and in vivo human tissues. This review emphasizes the newer techniques of SOCT and molecular imaging OCT, which show excellent potential for clinical application but have yet to be well reviewed in the literature. SOCT elucidates tissue characteristics, such as oxygenation and carcinogenesis, by detecting wavelength-dependent absorption and scattering of light in tissues. While SOCT measures endogenous biochemical distributions, molecular imaging OCT detects exogenous molecular contrast agents. These newer advances in functional OCT broaden the potential clinical application of OCT by providing novel ways to understand tissue activity that cannot be accomplished by other current imaging methodologies.
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Related Subject Headings
- Tomography, Optical Coherence
- Signal Processing, Computer-Assisted
- Nuclear Medicine & Medical Imaging
- Contrast Media
- 5105 Medical and biological physics
- 1103 Clinical Sciences
- 0903 Biomedical Engineering
- 0299 Other Physical Sciences
Citation
Published In
DOI
EISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Tomography, Optical Coherence
- Signal Processing, Computer-Assisted
- Nuclear Medicine & Medical Imaging
- Contrast Media
- 5105 Medical and biological physics
- 1103 Clinical Sciences
- 0903 Biomedical Engineering
- 0299 Other Physical Sciences