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Related Experiment Videos

Sensor-Based Technique for Manually Scanned Hand-Held Optical Coherence Tomography Imaging.

Paritosh Pande1, Guillermo L Monroy1,2, Ryan M Nolan1

  • 1Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.

Journal of Sensors
|October 17, 2017
PubMed
Summary
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This study introduces a new sensor-based manual scanning technique for optical coherence tomography (OCT) imaging. This method overcomes motion artifacts, enabling larger fields-of-view for clearer images of challenging anatomical sites.

Area of Science:

  • Biomedical optics
  • Medical imaging technology
  • Optical coherence tomography applications

Background:

  • Hand-held optical coherence tomography (OCT) probes provide flexible imaging for difficult-to-access anatomical locations.
  • Traditional OCT probes using scanning mirrors have limited lateral fields-of-view (FOV) of a few millimeters.
  • Manual scanning can increase lateral FOV but traditional fixed-rate triggering causes motion artifacts, leading to inaccurate images.

Purpose of the Study:

  • To develop and demonstrate a sensor-based manual scanning technique for OCT imaging.
  • To overcome motion artifacts associated with manual scanning in OCT.
  • To enable OCT imaging over a significantly larger lateral FOV.

Main Methods:

  • Implementation of a sensor-based manual scanning technique for OCT.

Related Experiment Videos

  • Utilizing real-time feedback from an optical motion sensor to trigger data acquisition.
  • Adaptively altering the trigger rate based on the instantaneous scan velocity of the probe.

    • Main Results:

    • Successfully circumvented motion artifacts during manual OCT scanning.
    • Enabled OCT imaging over a large lateral FOV.
    • Demonstrated the feasibility of the technique through imaging of biological and nonbiological samples.

    Conclusions:

    • The proposed sensor-based manual scanning technique effectively eliminates motion artifacts in OCT.
    • This method significantly enhances the lateral FOV achievable with hand-held OCT probes.
    • The technique offers a viable solution for high-fidelity OCT imaging in challenging anatomical regions.