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Proceedings Paper

Correction of astigmatism in endoscopic OCT for esophageal and coronary imaging
Author(s): Tianshi Wang; Antonius F. W. van der Steen; Gijs van Soest
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Paper Abstract

Optical Coherence Tomography catheters comprise a transparent tube which can act as a negative cylindrical lens and introduce astigmatism which will lead to a decrease in transverse resolution and image contrast. In this report, we numerically analyzed the astigmatism for standard catheter designs applicable to esophageal and coronary imaging. In order to maintain image quality, generally the beam can be refocused by a curved interface. To handle a situation involving high-index flush media, another method based on matching refractive indices is described and shown to successfully restore a round beam.

Paper Details

Date Published: 1 March 2012
PDF: 3 pages
Proc. SPIE 8217, Endoscopic Microscopy VII, 82170K (1 March 2012); doi: 10.1117/12.906326
Show Author Affiliations
Tianshi Wang, Erasmus MC (Netherlands)
Antonius F. W. van der Steen, Erasmus MC (Netherlands)
Interuniversity Cardiology Institute of The Netherlands (Netherlands)
Gijs van Soest, Erasmus MC (Netherlands)


Published in SPIE Proceedings Vol. 8217:
Endoscopic Microscopy VII
Guillermo J. Tearney; Thomas D. Wang M.D., Editor(s)

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