Share Email Print

Proceedings Paper

Shadow-free motorized capsule enables accurate beam positioning and sectorized OCT imaging of the esophagus
Author(s): Antonio López-Marín; Geert Springeling; Robert Beurskens; Heleen van Beusekom; Antonius van der Steen; Arjun D. Koch; Brett E. Bouma; Robert A. Huber; Gijs van Soest; Tianshi Wang
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In this study, we demonstrate a 12x36 mm motorized capsule for OCT imaging of the esophagus. The capsule produces unobstructed images by using a distal reflector design, thus avoiding shadow caused by the motor wires. The motor synchronous control enables three working modes: circumferential imaging, angular sector imaging and accurate beam positioning. Distortion artifacts shown in the sector imaging were found to be induced by velocity changes of the motor. We specifically characterized the motor speed and found a symmetric and repeatable behavior during sector scanning. Resampling of the sector images A-lines was carried out to achieve uniform angular spacing according to the measured speed profile. Also, distortion between consecutive sector frames was corrected using image registration to achieve stable imaging.

Paper Details

Date Published: 26 February 2020
PDF: 6 pages
Proc. SPIE 11214, Endoscopic Microscopy XV, 112140O (26 February 2020); doi: 10.1117/12.2545689
Show Author Affiliations
Antonio López-Marín, Erasmus MC (Netherlands)
Geert Springeling, Erasmus MC (Netherlands)
Robert Beurskens, Erasmus MC (Netherlands)
Heleen van Beusekom, Erasmus MC (Netherlands)
Antonius van der Steen, Erasmus MC (Netherlands)
Shenzhen Institutes of Advanced Technology (China)
Delft Univ. of Technology (Netherlands)
Arjun D. Koch, Erasmus MC (Netherlands)
Brett E. Bouma, Harvard Medical School (United States)
Massachusetts General Hospital (United States)
Robert A. Huber, Univ. zu Lübeck (Germany)
Gijs van Soest, Erasmus MC (Netherlands)
Tianshi Wang, Erasmus MC (Netherlands)

Published in SPIE Proceedings Vol. 11214:
Endoscopic Microscopy XV
Guillermo J. Tearney M.D.; Thomas D. Wang; Melissa J. Suter, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?