| Literature DB >> 25361133 |
Osman O Ahsen, Hsiang-Chieh Lee, Michael G Giacomelli, Zhao Wang, Kaicheng Liang, Tsung-Han Tsai, Benjamin Potsaid, Hiroshi Mashimo, James G Fujimoto.
Abstract
We demonstrate a computationally efficient method for correcting the nonuniform rotational distortion (NURD) in catheter-based imaging systems to improve endoscopic en face optical coherence tomography (OCT) and OCT angiography. The method performs nonrigid registration using fiducial markers on the catheter to correct rotational speed variations. Algorithm performance is investigated with an ultrahigh-speed endoscopic OCT system and micromotor catheter. Scan nonuniformity is quantitatively characterized, and artifacts from rotational speed variations are significantly reduced. Furthermore, we present endoscopic en face OCT and OCT angiography images of human gastrointestinal tract in vivo to demonstrate the image quality improvement using the correction algorithm.Entities:
Mesh:
Year: 2014 PMID: 25361133 PMCID: PMC4370282 DOI: 10.1364/OL.39.005973
Source DB: PubMed Journal: Opt Lett ISSN: 0146-9592 Impact factor: 3.776