Motion-compensated hand-held common-path Fourier-domain optical coherence tomography probe for image-guided intervention

Yong Huang, Xuan Liu, Cheol Song, Jin U. Kang

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

A motion-compensated, hand-held, common-path, Fourier-domain optical coherence tomography imaging probe has been developed for image-guided intervention during microsurgery. A hand-held prototype instrument was achieved by integrating an imaging fiber probe inside a stainless steel needle and attached to the ceramic shaft of a piezoelectric motor housed in an aluminum handle. The fiber probe obtains A-scan images. The distance information was extracted from the A-scans to track the sample surface distance and a fixed distance was maintained by a feedback motor control which effectively compensated hand tremor and target movements in the axial direction. Real-time data acquisition, processing, motion compensation, and image visualization and saving were implemented on a custom CPU-GPU hybrid architecture. We performed 10× zero padding to the raw spectrum to obtain 0.16 μm position accuracy with a compensation rate of 460 Hz. The root-mean-square error of handheld distance variation from target position was measured to be 2.93 μm. We used a cross-correlation maximization-based shift correction algorithm for topology correction. To validate the system, we performed free-hand OCT M-scan imaging using various samples.

Original languageEnglish (US)
Pages (from-to)3105-3118
Number of pages14
JournalBiomedical Optics Express
Volume3
Issue number12
DOIs
StatePublished - Dec 1 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Atomic and Molecular Physics, and Optics

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