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Magnetic endoscopic imaging provides the trainer and trainee with a three‐dimensional display of the endoscope configuration within the patient (Figure 4.5). This is particularly useful during colonoscopy, where the visual representation of loops can be used to teach loop recognition and loop reduction techniques [59]. Use of magnetic endoscopic imaging with trainee endoscopists has been assessed in only one randomized controlled trial where its usage was associated with a lower risk of procedure failure, reduced cecal intubation time, higher cecal intubation rate, decreased duration of looping, fewer loop reductions, and more effective use of external pressure [60]. Additionally, its use is not associated with cognitive overload in trainees [61]. Studies in practicing endoscopists have shown that use of magnetic imagers facilitates colonoscopy completion, insertion time, lesion localization and improves patient comfort [62–64]. The unpublished experience from the Canadian SEE Program has been that the use of magnetic imagers is extremely beneficial in fostering conscious competence among trainers as it enables them to link their “feel” to the image on the screen to develop a better understanding of the procedure.

Currently, two imagers are available commercially: the ScopeGuide from Olympus Medical Systems and SCOPEPILOT form Pentax Medical. Prior to employing this technology in training, trainers should be comfortable in using it themselves and interpreting the images. While its use is integrated within many existing endoscopy “train‐the‐trainer” programs, a focused curriculum to educate trainers on its use during training does not yet exist. Future studies are required to examine whether longitudinal use of magnetic endoscopic imaging during training can accelerate trainee learning curves and to determine the optimal manner in which to integrate this technology into endoscopy training.