Boundary-guided VMUNet for atrophic gastritis lesion segmentation in magnifying endoscopy with narrow-band imaging
Background Atrophic gastritis (AG) is a gastric precancerous condition, and objective delineation of lesion extent may support risk assessment, targeted biopsy, and standardized endoscopic documentation. Magnifying endoscopy with narrow-band imaging (ME-NBI) highlights mucosal and microvascular patterns, but automated...