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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 4, Iss. 9 — Sep. 4, 2009

High-resolution OCT balloon imaging catheter with astigmatism correction

Jiefeng Xi, Li Huo, Yicong Wu, Michael J. Cobb, Joo Ha Hwang, and Xingde Li  »View Author Affiliations


Optics Letters, Vol. 34, Issue 13, pp. 1943-1945 (2009)
http://dx.doi.org/10.1364/OL.34.001943


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Abstract

We report new optics designs for an optical coherence tomography (OCT) balloon imaging catheter to achieve diffraction-limited high resolution at a large working distance and enable the correction of severe astigmatism in the catheter. The designs employed a 1 mm diameter gradient-index lens of a properly chosen pitch number and a glass rod spacer to fully utilize the available NA of the miniature optics. Astigmatism caused by the balloon tubing was analyzed, and a method based on a cylindrical reflector was proposed and demonstrated to compensate the astigmatism. A catheter based on the new designs was successfully developed with a measured diffraction-limited lateral resolution of 21 μ m , a working distance of 11 12   mm , and a round-shape beam profile. The performance of the OCT balloon catheter was demonstrated by 3D full-circumferential imaging of a swine esophagus in vivo along with a high-speed, Fourier-domain, mode-locked swept-source OCT system.

© 2009 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.2150) Medical optics and biotechnology : Endoscopic imaging

ToC Category:
Imaging Systems

History
Original Manuscript: April 1, 2009
Manuscript Accepted: April 24, 2009
Published: June 22, 2009

Virtual Issues
Vol. 4, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Jiefeng Xi, Li Huo, Yicong Wu, Michael J. Cobb, Joo Ha Hwang, and Xingde Li, "High-resolution OCT balloon imaging catheter with astigmatism correction," Opt. Lett. 34, 1943-1945 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-34-13-1943

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