Artifact removal in Fourier-domain optical coherence tomography with a piezoelectric fiber stretcher

Vergnole, Sébastien; Lamouche, Guy; Dufour, M.

doi:10.1364/ol.33.000732

Cited by 25 publications

(14 citation statements)

References 18 publications

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“…To resolve the complex conjugate ambiguity and to double the theoretical depth range, several full-phase interferometry methods have been proposed 13,19,25. The scan depth was 7.8 mm when using a full-phase technique in the present study, with the real and imaginary parts acquired simultaneously using harmonic detection 5.…”

Section: Discussionmentioning

confidence: 77%

Ultra-high resolution and long scan depth optical coherence tomography with full-phase detection for imaging the ocular surface

Tao

Peterson

Jiang

et al. 2013

OPTH

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We used a unique combination of four state-of-the-art technologies to achieve a high performance spectral domain optical coherence tomography system suitable for imaging the entire ocular surface. An ultra-high resolution, extended depth range, full-phase interferometry, and high-speed complementary metal-oxide semiconductor transistor camera detection provided unprecedented performance for the precise quantification of a wide range of the ocular surface. We demonstrated the feasibility of this approach by obtaining high-speed and high-resolution images of a model eye beyond the corneal–scleral junction. Surfaces determined from the images with a segmentation algorithm demonstrated excellent accuracy and precision.

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Section: Discussionmentioning

confidence: 77%

Ultra-high resolution and long scan depth optical coherence tomography with full-phase detection for imaging the ocular surface

Tao

Peterson

Jiang

et al. 2013

OPTH

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“…16 The bandwidth of this heterogeneous frequency is determined by the optical characteristics of the tissue sample and the density of A-line scans in a B-scan image. 26 The third term is the Doppler beating signal, which is introduced by the moving particles in the tissue sample. Depending on the magnitude of the moving particle velocity, the Doppler beating signal shifts away from the heterogeneous bandwidth BW.…”

Section: Modified Hilbert Transform Optical Microangiography Flow Imagementioning

confidence: 99%

High-resolution wide-field imaging of retinal and choroidal blood perfusion with optical microangiography

2010

J. Biomed. Opt

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Abstract. We present high-resolution wide-field imaging of retinal and choroidal blood perfusion with optical microangiography ͑OMAG͒ technology. Based on spatial frequency analysis, OMAG is capable of visualizing the vascular perfusion map down to capillarylevel resolution. An OMAG system operating at 840 nm is used with an A-scan rate of 27,000 Hz, axial resolution of 8 m, and sensitivity of 98 dB. To achieve wide-field imaging, we capture 16 optical coherence tomography ͑OCT͒ 3-D datasets in a sequential order, which together provide an area of ϳ7.4ϫ 7.4 mm 2 at the posterior segment of the human eye. For each of these datasets, the bulk tissue motion artifacts are eliminated by applying a phase compensation method based on histogram estimation of bulk motion phases, while the displacements occurring between adjacent B-frames are compensated for by 2-D cross correlation between two adjacent OMAG flow images. The depth-resolved capability of OMAG imaging also provides volumetric information on the ocular circulations. Finally, we compare the clinical fluorescein angiography and indocyanine green angiography imaging results with the OMAG results of blood perfusion map within the retina and choroid, and show excellent agreement between these modalities.

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“…As one can see, the amplitude of the reference at the edges of the image frame is about 60% of that in the middle, while the spectral shape remains relatively unchanged and the intensity modulation is compensated accordingly during the imaging processing. The phase modulation can also be implemented by a piezoelectric stage-driven mirror, 32 a fiber stretcher, 34 or an electro-optic phase modulator. 35 In the present stage, we focus on the two-dimensional (2D) cross-sectional imaging via one-dimensional (1D) scanning.…”

Section: System Configurationmentioning

confidence: 99%

Full-range Fourier domain optical coherence tomography imaging probe with a magnetic-driven resonant fiber cantilever

Huang

2011

Opt. Eng

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In this work, we developed a full-range Fourier domain optical coherence tomography (FD-OCT) imaging probe with a magnetic-driven resonant fiber cantilever. A galvanometer-driven reference mirror provides a linear phase modulation to each M-scan/B-scan frame to enable complex conjugate-free, full-range FD-OCT imaging. A fiber cantilever inside the probe is driven by a low-voltage miniature magnetic transducer. The fiber cantilever scans at its resonant frequency synchronized to the phase modulation induced by the reference mirror. Using a CCD linescan camera-based spectrometer, we demonstrated real-time full-range FD-OCT at 34 frame/s (1024 pixel lateral × 2048 pixel axial). C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Artifact removal in Fourier-domain optical coherence tomography with a piezoelectric fiber stretcher

Cited by 25 publications

References 18 publications

Ultra-high resolution and long scan depth optical coherence tomography with full-phase detection for imaging the ocular surface

Ultra-high resolution and long scan depth optical coherence tomography with full-phase detection for imaging the ocular surface

High-resolution wide-field imaging of retinal and choroidal blood perfusion with optical microangiography

Full-range Fourier domain optical coherence tomography imaging probe with a magnetic-driven resonant fiber cantilever

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