Robust high-resolution fine OCT needle for side-viewing interstitial tissue imaging

Yicong Wu, Jiefeng Xi, Li Huo, Jason Padvorac, Eun Ji Shin, Samuel A. Giday, Anne Marie Lennon, Marcia Irene F. Canto, Joo Ha Hwang, Xingde Li

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


Fine optical coherence tomography (OCT) imaging needles that can be integrated with a standard biopsy needle have been developed with a new optics design to improve the optical quality and mechanical robustness, where a fiber-optic lens (that is spliced to a single-mode fiber) and a microreflector are encased within a microglass tube. The design also minimizes the cylindrical lens effect induced by the glass tube and eases the needle assembly process. Real-time cross-sectional OCT imaging of various tissue samples were performed ex vivo using the miniature-imaging needle along with a 1300-nm swept-source OCT system. The preliminary results demonstrate the improved mechanical and optical performance and suggest the potential of the fine OCT needle for minimally invasive interstitial imaging and image-guided biopsy.

Original languageEnglish (US)
Article number5353608
Pages (from-to)863-869
Number of pages7
JournalIEEE Journal on Selected Topics in Quantum Electronics
Issue number4
StatePublished - Jul 2010


  • Astigmatism
  • OCT needle
  • biopsy needle
  • interstitial imaging
  • optical coherence tomography (OCT)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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