New technologies for imaging of Barrett's esophagus.

There have been many developments in endoscopy-based imaging for the detection of Barrett's syndrome, dysplasia, and neoplasia in patients with Barrett's esophagus. This article reviews the studies on and compares the efficacy of several important endoscopic imaging modalities. Some of these technologies have already achieved regulatory approval, commercial availability, and establishment of clinical utility and practical application. The future of imaging for Barrett's syndrome likely rests with the development of molecular targeting with dysplasiatargeted probes that have been conjugated to dyes or nanoparticles.