Correction of astigmatism in endoscopic OCT for esophageal and coronary imaging

Tianshi Wang*, Antonius F.W. Van Der Steen, Gijs Van Soest

*Corresponding author for this work

Research output: Chapter/Conference proceedingConference proceedingAcademicpeer-review

1 Citation (Scopus)


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.

Original languageEnglish
Title of host publicationEndoscopic Microscopy VII
Number of pages3
Publication statusPublished - 1 Mar 2012
EventEndoscopic Microscopy VII - San Francisco, CA, United States
Duration: 22 Jan 201223 Jan 2012

Publication series

SeriesProgress in Biomedical Optics and Imaging - Proceedings of SPIE


ConferenceEndoscopic Microscopy VII
Country/TerritoryUnited States
CitySan Francisco, CA

Bibliographical note

© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).


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