1. Interobserver Agreement for the Detection of Barrett’s Esophagus with Optical Frequency Domain Imagin

    Interobserver Agreement for the Detection of Barrett’s Esophagus with Optical Frequency Domain Imagin

    Background Optical frequency domain imaging (OFDI) is a second-generation form of optical coherence tomography (OCT) providing comprehensive cross-sectional views of the distal esophagus at a resolution of ~7 μm. Aim Using validated OCT criteria for squamous mucosa, gastric cardia mucosa, and Barrett’s esophagus (BE), the objective of this study was to determine the inter- and intra-observer agreements by a large number of OFDI readers for differentiating these tissues. Methods OFDI images were obtained from nine subjects undergoing screening and surveillance for BE. Sixty-four OFDI image regions of interest were randomly selected for review. A training set of 19 images ...

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