Endoscopic images of a focal ablation procedure for residual Barrett's esophagus using the Barrx90 system

(A) Antegrade view of an esophagus that had contained long-segment Barrett's esophagus, six weeks after primary circumferential ablation.
(B) Residual islands of Barrett's mucosa.
(C) Corresponding image using narrow band imaging.
(D) Ablation effect immediately after treatment with the Barrx90 system. The distal end of the catheter is visible at the 12 o'clock position in the endoscopic field.
(E) Endoscopic appearance after the first ablation pass (two applications of 15 J/cm2) and cleaning of the ablation zones.
(F) After the second ablation pass, the ablation zones have a tan-colored appearance.