Send to

Choose Destination
See comment in PubMed Commons below
Opt Express. 2008 Jan 21;16(2):524-34.

Quasi-single shot axial-lateral parallel time domain optical coherence tomography with Hilbert transformation.

Author information

  • 1Graduate School of Science and Engineering, Yamagata University, 4-3-16 Johnan, Yonezawa, Yamagata, 992-8510, Japan.


We developed axial-lateral parallel time-domain optical coherence tomography (ALP TD-OCT) from a single interference image. A two-dimensional camera can produce a depth-resolved interference image using diffracted light as the reference beam and a linear illumination beam without any mechanical scan. An OCT image of biological tissues with sufficient sensitivity requires extraction of interference signals by subtracting the DC image, which contains the intensity of noninterference light and the electrical noise of the camera, from a single interference image and subsequent application of the Hilbert transformation for each axial direction. We measured 300 interference images of a moving human finger in vivo using an indium gallium arsenide (InGaAs) camera (320 x 250 pixels) operating at 60 frames per second and then obtained OCT images with an imaging range of 5.0 x 1.7-mm(2) (lateral x axial) using a DC image based on averaged interference images. The system sensitivity was 90.5 dB with a 1.05-ms exposure. As the OCT image depends on the interference signals in a single interference image, the OCT signals were stable compared with OCT images based on the phase-shift method.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Write to the Help Desk