Commentary

Polyp size measurement is an important component of endoscopic practice [1] [2] [3]. In this video, Kuai et al. show a novel tool that allows the assessment of polyp size during endoscopy [4]. It integrates a laser beam that allows for estimation of distance to the lesion, and permits superimposition of a virtual scale on the endoscopy screen that adjusts according to that distance.

The system relies on the location of the laser dot, which should be placed as close to lesions as possible. The measuring system also lacks information about the 3D space, only allowing measurement along the immediate axis of the laser dot. Measurement of lesion components distal and proximal to the laser will therefore be less accurate. This tool is, however, an important step towards more accurate measurement of polyp size.

Publication History

Article published online:
19 December 2024

• References

• 1 Djinbachian R, Khellaf A, Noyon B. et al. Accuracy of measuring colorectal polyp size in pathology: a prospective study. Gut 2023; 72: 2015-2018
• 2 Djinbachian R, Popescu I Crainic. et al. Accuracy in polyp size measurement among surgeons, gastroenterologists, trainees, and experts: a prospective video-based study. Am J Gastroenterol 2024; 119: 532-538
• 3 von Renteln D, Djinbachian R, Zarandi-Nowroozi M. et al. Measuring size of smaller colorectal polyps using a virtual scale function during endoscopies. Gut 2023; 72: 417-420
• 4 Kuai Y, Zhou S, Sun B. et al. Use of an endoscopic virtual ruler based on the fiber laser principle and artificial intelligence technology. Endoscopy 2024; 56: E795-E796