Introduction
A new LED endoscopy system featuring advanced noise-reduction technology for enhanced brightness and minimal halation, the EP-8000 with the EC-860ZP colonoscope (Fujifilm), is scheduled to be released.
Aims & Methods
We conducted a multicenter, observational study to evaluate the new system’s potential improvements in image quality compared to a previous system/scope (VP-7000/EC-760ZP). From January 2024 to January 2025, patients undergoing colonoscopy at two institutions were enrolled. Images of the cecum and lesions were captured using white light imaging (WLI), blue light imaging (BLI), and linked color imaging (LCI) under similar conditions about air insufflation, angle, distance, and so on. Participants were divided into three groups: Group 1 (EP-8000+EC-860ZP; 50 cases), Group 2 (EP-8000+EC-760ZP; 50 cases), and Group 3 (VP-7000+EC-760ZP; 50 cases). Cecal images were evaluated for brightness and halation using a four-point scale (1=poor to 4=excellent) by endoscopists and original values by image-analysis software, while lesion images were assessed for brightness, halation, and visibility by endoscopists.
Results
In cecal images, the endoscopists’ scores for WLI in Group 1 were significantly better than in Group 3 for brightness (3.71±0.55 vs. 3.51±0.58, p<0.001) and for halation (3.60±0.51 vs. 3.18±0.59, p<0.001). Similarly, for BLI and LCI, Group 1 achieved higher scores than Group 3 regarding brightness (BLI: 3.15±0.85 vs. 2.23±0.92, p<0.001; LCI: 3.83±0.42 vs. 3.54±0.58, p<0.001) and halation (BLI: 2.99±0.69 vs. 2.71±0.78, p<0.001; LCI: 3.33±0.60 vs. 3.10±0.58, p<0.001). Software analysis confirmed that Group 1 had superior brightness values compared to Group 3 for WLI (122.7±6.6 vs. 110.7±7.7, p<0.001), BLI (99.1±10.9 vs. 69.3±11.5, p<0.001), and LCI (139.4±9.2 vs. 113.1±10.7, p<0.001), as well as lower halation values for WLI (1.34±1.80 vs. 3.35±3.59, p=0.031) and LCI (1.48±0.83 vs. 4.06±3.99, p=0.010). Regarding lesion images, brightness, halation, and visibility for WLI, BLI, and LCI were significantly better in Group 1 than in Group 3.
Conclusion
The new LED system provided marked improvements in brightness, halation, and lesion visibility. The software assessment was consistent with endoscopists assessment objective and can be used for the development and evaluation of new endoscopic systems.
References
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Disclosure
Yoshida N and Dohi O received a research grant from Fujifilm Co. Yamamoto H had a consultant relationship with Fujifilm Co. and received honoraria, grants, and royalties from the company. Yano T received a research grant and honoraria from Fujifilm, Japan. The other authors declare no conflicts of interest. Novel endoscopic systems and scopes were lent by Fujifilm Co.
