1111 SECOND-GENERATION MAGNETICALLY CONTROLLED CAPSULE GASTROSCOPY FOR BETTER DIAGNOSIS OF UPPER GASTROINTESTINAL TRACT: A RANDOMIZED CONTROLLED CLINICAL TRIAL

Abstract

Compared to conventional endoscopy, magnetically controlled capsule gastroscopy (MCCG) can be further optimized in gastric examination time and complete visualization of upper gastrointestinal (UGI) mucosa. The second-generation MCCG (MCCG-2) was developed with higher image resolution and adaptive frame rate, and we aimed to evaluate its clinical availability for UGI examination in this study. Consecutive patients undergoing MCCG examination between May to June 2019 were prospectively enrolled and randomized to swallow the first-generation MCCG (MCCG-1) or MCCG-2 in a 1:1 ratio. The main outcomes included visualization of the esophagus and duodenum, operation related parameters, image quality, maneuverability, detection of lesions, as well as safety evaluation. Eighty patients were enrolled. In MCCG-2 group, frames captured for esophageal mucosa and Z-line were 171.00 and 2.00, significantly increased from those in MCCG-1 group with 97.00 and 0.00 (P=0.002 and 0.028). The gastric examination time was shortened from 7.78±0.97 min to 5.27±0.74 min (P<0.001), with the total running time of capsule extended from 702.83 min to 1001.99 min (P<0.001). MCCG-2 also greatly improved the image quality (P<0.001) and maneuverability (P<0.01). No statistical difference existed in the detection of lesions between the two groups, and no adverse events occurred. MCCG-2 showed better performance in mucosal visualization, examination duration and maneuverability, making better diagnosis of UGI diseases a possibility.View Large Image Figure ViewerDownload Hi-res image Download (PPT)