Abstract

Endoscopic optical coherence tomography (OCT) catheters comprise a transparent tube to separate the imaging instrument from tissues. This tube acts as a cylindrical lens, introducing astigmatism into the beam. In this report, we quantified this negative effect using optical simulations of OCT catheter devices, and discuss possible compensation strategies. For esophageal imaging, the astigmatism is aggravated by the long working distance. For intracoronary imaging, the beam quality is degraded due to the liquid imaging environment. A nearly circular beam profile can be achieved by a curved focusing optics. We also consider the method of matching refractive indices, and it is shown to successfully restore a round beam.

© 2012 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
High-resolution OCT balloon imaging catheter with astigmatism correction

Jiefeng Xi, Li Huo, Yicong Wu, Michael J. Cobb, Joo Ha Hwang, and Xingde Li
Opt. Lett. 34(13) 1943-1945 (2009)

Probe alignment and design issues of microelectromechanical system based optical coherence tomography endoscopic imaging

Can Duan, Jingjing Sun, Sean Samuelson, and Huikai Xie
Appl. Opt. 52(26) 6589-6598 (2013)

Piezoelectric-transducer-based miniature catheter for ultrahigh-speed endoscopic optical coherence tomography

Tsung-Han Tsai, Benjamin Potsaid, Martin F. Kraus, Chao Zhou, Yuankai K. Tao, Joachim Hornegger, and James G. Fujimoto
Biomed. Opt. Express 2(8) 2438-2448 (2011)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription