Abstract
BACKGROUND AND AIMS: Traditional two-dimensional (2D) gastrointestinal endoscopy lacks depth perception, leading to potential diagnostic errors. This study evaluates a novel software-based three-dimensional (3D) endoscopy system that converts 2D images into 3D, compatible with existing endoscopes. METHODS: A randomized comparative study was conducted with 32 endoscopists at NTT Medical Center. Participants were assigned to perform snaring tasks using either 2D or 3D imaging in short- and long-distance scenarios. Success rates in first attempts were compared between the two groups. RESULTS: In the long-distance scenario, the first-attempt success rate was significantly higher in the 3D group (53.13%) compared to the 2D group (21.88%, p = 0.01). The 3D system provided a notable improvement in depth perception and distance judgment, especially for less experienced endoscopists. No significant difference was observed in the time per attempt between the two groups. CONCLUSIONS: The new 3D system enhances depth perception and distance judgment, particularly benefiting less experienced endoscopists.