title: Rotational distortion correction in endoscopic optical coherence tomography based on speckle decorrelation.
abstract: We present a new technique for the correction of nonuniform rotation distortion in catheter-based optical coherence tomography (OCT), based on the statistics of speckle between A-lines using intensity-based dynamic light scattering. This technique does not rely on tissue features and can be performed on single frames of data, thereby enabling real-time image correction. We demonstrate its suitability in a gastrointestinal (GI) balloon-catheter OCT system, determining the actual rotational speed with high temporal resolution, and present corrected cross-sectional and en face views showing significant enhancement of image quality.
authors.forename: Néstor
authors.initials: N
authors.lastname: Uribe-Patarroyo
authors.forename: Brett E
authors.initials: BE
authors.lastname: Bouma
mesh_terms: D016477:Artifacts; D057785:Catheters; D004724:Endoscopy; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D012399:Rotation; D041623:Tomography, Optical Coherence