Diagnostic Ability of High-definition Imaging Using Ultraslim Endoscopes in Early Gastric Cancer

Sugita, Tomomi; Suzuki, Shinichi; Ichijima, Ryoji; Ogura, Kyoko; Kusano, Chika; Ikehara, Hisatomo; Gotoda, Takuji; Moriyama, Mitsuhiko

doi:10.5230/jgc.2021.21.e23

Cited by 2 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was therefore difficult to distinguish different structures and contrast of color between the EGC and background gastric mucosa, but the recently developed high-definition third-generation UTE has markedly improved image quality compared with standard-definition second-generation UTE and oral endoscopy 15 – 19 , 25 . Sugita et al 18 reported that the ability of third-generation UTE to detect EGC was significantly higher than that of second-generation UTE (accuracy: 80.8% vs. 71.6%, P = 0.017; sensitivity: 94.9% vs. 76.5%, P < 0.001; positive predictive value, 76.2% vs. 55.3%, P < 0.001; and negative predictive value, 94.1% vs. 73.5%, P < 0.001). A strength of this study is that we showed the efficacy of third-generation UTE using TXI mode 2 to evaluate color differences (the CIE L*a*b* color space) and subjective visibility between EGC and the non-neoplastic mucosa.…”

Section: Discussionmentioning

confidence: 99%

Visibility of early gastric cancers by texture and color enhancement imaging using a high-definition ultrathin transnasal endoscope

Koyama

Sugimoto

Kawai

et al. 2023

Sci Rep

View full text Add to dashboard Cite

We evaluated whether texture and color enhancement imaging (TXI) using a high-definition ultrathin transnasal endoscope (UTE) improves the visibility of early gastric cancer (EGC) compared with white-light imaging (WLI). This study included 31 EGCs observed by TXI mode 2 using a high-definition UTE prior to endoscopic submucosal dissection. The first outcome was to compare the color differences based on Commission Internationale de l’Eclairage L*a*b* color space between EGCs and the surrounding mucosa by WLI and TXI using the UTE (objective appearance of EGC). The second outcome was to assess the visibility of EGCs by WLI and TXI using the UTE in an image evaluation test performed on 10 endoscopists (subjective appearance of EGC). Color differences between EGCs and non-neoplastic mucosa were significantly higher in TXI than in WLI in all EGCs (TXI: 16.0 ± 10.1 vs. WLI: 10.2 ± 5.5 [mean ± standard deviation], P < 0.001). Median visibility scores evaluated by 10 endoscopists using TXI were significantly higher than those evaluated using WLI (TXI: 4 [interquartile range, 4–4] vs. WLI: 4 [interquartile range, 3–4], P < 0.001). TXI using high-definition UTE improved both objective and subjective visibility of EGCs compared with WLI.

show abstract