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Proceedings Paper

Neurosurgical hand-held optical coherence tomography (OCT) forward-viewing probe
Author(s): Cuiru Sun; Kenneth K. C. Lee; Barry Vuong; Michael Cusimano; Alexander Brukson; Adrian Mariampillai; Beau A. Standish; Victor X. D. Yang
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Paper Abstract

A prototype neurosurgical hand-held optical coherence tomography (OCT) imaging probe has been developed to provide micron resolution cross-sectional images of subsurface tissue during open surgery. This new ergonomic hand-held probe has been designed based on our group's previous work on electrostatically driven optical fibers. It has been packaged into a catheter probe in the familiar form factor of the clinically accepted Bayonet shaped neurosurgical non-imaging Doppler ultrasound probes. The optical design was optimized using ZEMAX simulation. Optical properties of the probe were tested to yield an ~20 um spot size, 5 mm working distance and a 3.5 mm field of view. The scan frequency can be increased or decreased by changing the applied voltage. Typically a scan frequency of less than 60Hz is chosen to keep the applied voltage to less than 2000V. The axial resolution of the probe was ~15 um (in air) as determined by the OCT system. A custom-triggering methodology has been developed to provide continuous stable imaging, which is crucial for clinical utility. Feasibility of this probe, in combination with a 1310 nm swept source OCT system was tested and images are presented to highlight the usefulness of such a forward viewing handheld OCT imaging probe. Knowledge gained from this research will lay the foundation for developing new OCT technologies for endovascular management of cerebral aneurysms and transsphenoidal neuroendoscopic treatment of pituitary tumors.

Paper Details

Date Published: 9 February 2012
PDF: 8 pages
Proc. SPIE 8207, Photonic Therapeutics and Diagnostics VIII, 82074V (9 February 2012); doi: 10.1117/12.909116
Show Author Affiliations
Cuiru Sun, Ryerson Univ. (Canada)
Kenneth K. C. Lee, Univ. of Toronto (Canada)
Barry Vuong, Ryerson Univ. (Canada)
Michael Cusimano, St. Michael's Hospital (Canada)
Alexander Brukson, Ryerson Univ. (Canada)
Adrian Mariampillai, Ryerson Univ. (Canada)
Beau A. Standish, Ryerson Univ. (Canada)
Victor X. D. Yang, Ryerson Univ. (Canada)
Univ. of Toronto (Canada)


Published in SPIE Proceedings Vol. 8207:
Photonic Therapeutics and Diagnostics VIII
Anita Mahadevan-Jansen; Andreas Mandelis; Kenton W. Gregory; Nikiforos Kollias; Hyun Wook Kang; Henry Hirschberg; Melissa J. Suter; Brian Jet-Fei Wong; Justus F. Ilgner; Stephen Lam; Bodo E. Knudsen; Steen Madsen; E. Duco Jansen; Bernard Choi; Guillermo J. Tearney; Laura Marcu; Haishan Zeng; Matthew Brenner; Krzysztof Izdebski, Editor(s)

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