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Simultaneous B-M-mode scanning method for real-time full-range Fourier domain optical coherence tomography
Yoshiaki Yasuno1, Shuichi Makita, Takashi Endo
1Institute of Applied Physics, University of Tsukuba, Tennodai 1-1-1, Ibaraki, Tsukuba 305-8573, Japan. yasuno@optlab2.bk.tsukuba.ac.jp
Applied Optics
|April 1, 2006
Summary
High-speed Fourier domain optical coherence tomography (FD-OCT) achieves full-range imaging by simultaneously scanning the reference beam and sample. This advanced technique enables rapid visualization of biological tissues.
Area of Science:
- Biomedical Optics
- Medical Imaging
- Optical Engineering
Background:
- Fourier Domain Optical Coherence Tomography (FD-OCT) is a powerful non-invasive imaging modality.
- Achieving high-speed, full-range imaging in FD-OCT remains a significant challenge.
- Simultaneous scanning techniques are explored to improve acquisition speed and data completeness.
Purpose of the Study:
- To demonstrate a high-speed, complex, full-range Fourier domain optical coherence tomography system.
- To develop a method for simultaneous M-scan and B-scan acquisition.
- To enable rapid in vivo imaging of biological structures.
Main Methods:
- Simultaneous phase modulation of the reference beam (M scan) and transversal scanning (B scan).
- Application of Fourier transform along the B-scan direction to reconstruct complex spectra.
- Utilization of a single A-scan per transversal position for full-range image acquisition.
Main Results:
- Demonstrated a simple, slow version of FD-OCT visualizing a plastic plate cross-section.
- Developed a modified fast version achieving an acquisition time of 27 ms.
- Successfully visualized a sweat duct in a finger pad in vivo.
Conclusions:
- Simultaneous B-M-mode scanning enables high-speed, full-range FD-OCT imaging.
- The developed system significantly reduces acquisition time for OCT imaging.
- This technique holds promise for rapid in vivo biological tissue investigation.
