Correction of astigmatism in endoscopic OCT for esophageal and coronary imaging

Tianshi Wang; Antonius F. W. van der Steen; Gijs van Soest

doi:10.1117/12.906326

1 March 2012 Correction of astigmatism in endoscopic OCT for esophageal and coronary imaging

Tianshi Wang, Antonius F. W. van der Steen, Gijs van Soest

Proceedings Volume 8217, Endoscopic Microscopy VII; 82170K (2012) https://doi.org/10.1117/12.906326
Event: SPIE BiOS, 2012, San Francisco, California, United States

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.

Citation Download Citation

Tianshi Wang, Antonius F. W. van der Steen, and Gijs van Soest "Correction of astigmatism in endoscopic OCT for esophageal and coronary imaging", Proc. SPIE 8217, Endoscopic Microscopy VII, 82170K (1 March 2012); https://doi.org/10.1117/12.906326

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available