Electronic Imaging in Colonoscopy: Clinical Applications and Future Prospects

R Rameshshanker, Ana Wilson, R Rameshshanker, Ana Wilson

Abstract

Electronic chromoendoscopy (EC) is an equipment-based technology which could be easily activated by push of a button. There are four EC techniques available for use at present: narrow band imaging (NBI), i-Scan, flexible spectral chromoendoscopy and blue laser imaging. Out of the four techniques, NBI has been extensively evaluated for the detection and characterization of dysplasia in colonic polyps and dysplasia associated with inflammatory bowel disease. In this review, we will focus on the new developments and applications of EC.

Keywords: Diminutive polyps; Electronic chromoendoscopy; FICE; NBI; Optical diagnosis; i-Scan.

Figures

Fig. 1
Fig. 1
NBI images of polyps. Clockwise: NBI images of hyperplastic polyp, adenoma, adenoma, SSA/P and SSA/P.
Fig. 2
Fig. 2
WASP classification. Adapted from IJspeert JE, Bastiaansen BA, van Leerdam ME, et al. Development and validation of the WASP classification system for optical diagnosis of adenomas, hyperplastic polyps and sessile serrated adenomas/polyps. Gut 2015;0:1–8; with permission.
Fig. 3
Fig. 3
BLI images of polyps. Clockwise: BLI images of hyperplastic polyp, adenoma and adenoma.

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