Colonoscopy with magnetic control system to navigate the forepart of colonoscope shortens the cecal intubation time

Chung Sheng Yang, Fat Moon Suk, Chun Nan Chen, Cheng Long Chuang, Joe Air Jiang, Chih Wen Liu, Gi Shih Lien

Research output: Contribution to journalArticlepeer-review


Background: Colonoscopy is considered the most effective method for diagnosing colorectal diseases, but its application is sometimes limited due to invasiveness, patient intolerance, and the need for sedation. Objective: The aim of this study was to improve the problem of loop formation and shorten the cecal intubation time of colonoscopy by using a magnetic control system (MCS). Methods: Two experienced gastroenterologists, three trainees, and a novice repeated colonoscopy without or with MCS on three colonoscopy training model simulator cases. These cases were divided into introductory (case 2) and challenging levels (cases 4 and 5). The cecal intubation times were recorded. Results: For all cases, the average cecal intubation times for the experienced gastroenterologists with MCS were significantly shorter than without MCS (case 2: 52.45 vs. 27.65 s, p < 0.001; case 4: 166.7 vs. 120.55 s, p < 0.01; case 5: 130.35 vs. 100.2 s, p < 0.05). Those of the trainees also revealed significantly shorter times with MCS (case 2: 67.27 vs. 51 s, p < 0.01; case 4: 253.27 vs. 170.97 s, p < 0.001; case 5: 144.1 vs. 85.57 s, p < 0.001). Conclusion: Conducting colonoscopy with MCS is safe and smooth, and shortens the cecal intubation time by navigating the forepart of the colonoscope. In addition, all diagnostic and therapeutic benefits of conventional colonoscopy are retained.

Original languageEnglish
Pages (from-to)2480-2483
Number of pages4
JournalSurgical endoscopy
Issue number8
Publication statusPublished - Aug 2014


  • Cecal intubation time
  • Colonoscopy
  • Magnet

ASJC Scopus subject areas

  • Surgery


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