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Updated: Jun 3, 2026

Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
Published on: January 15, 2013
Full-range k-domain linearization in spectral-domain optical coherence tomography.
Mansik Jeon1, Jeehyun Kim, Unsang Jung
1School of Electrical Engineering and Computer Science, Kyungpook National University, Sankyuk-dong, Buk-gu, Daegu, South Korea.
A novel k-domain linearization method simplifies spectral-domain optical coherence tomography (SD-OCT) hardware and software. This technique enhances axial image resolution and imaging speed without compromising accuracy.
Area of Science:
- Biomedical Optics
- Medical Imaging Technology
Background:
- Spectral-domain optical coherence tomography (SD-OCT) is a crucial imaging modality.
- Accurate k-domain linearization is essential for high-resolution OCT imaging.
- Existing methods often require complex hardware or software recalibration.
Purpose of the Study:
- To demonstrate a full-bandwidth k-domain linearization method for SD-OCT.
- To simplify SD-OCT systems by reducing hardware and software complexity.
- To improve axial image resolution and imaging speed.
Main Methods:
- Utilized a translating-slit-based wavelength filter for wavenumber-pixel-position information.
- Co-registered wavelength-swept spectra with pixel positions using an optical spectrum analyzer.
- Employed signal resampling without rescaling or interpolation for imaging.
Main Results:
- Achieved accurate k-linearization by optimizing the k-linearization order.
- Demonstrated a full-width at half-maximum (FWHM) of 8 microm for the point-spread function (PSF) at the axial measurement range edge.
- Observed a sensitivity drop of less than 10 dB at 2.5 mm imaging depth compared to uncompensated cases.
Conclusions:
- The proposed method simplifies SD-OCT systems.
- It enhances imaging speed and axial resolution.
- The technique offers a practical solution for improved SD-OCT performance.
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