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

It is unclear whether high-definition (HD) imaging improves visibility and diagnostic ability in early gastric cancer (EGC) compared with standard-definition (SD) imaging. We aimed to compare the diagnostic performance and visibility scores of HD and SD ultraslim endoscopes in EGC. We used HD and SD...

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Bibliographic Details
Published in:Journal of gastric cancer 2021, 21(3), , pp.246-257
Main Authors: Sugita, Tomomi, Suzuki, Sho, Ichijima, Ryoji, Ogura, Kanako, Kusano, Chika, Ikehara, Hisatomo, Gotoda, Takuji, Moriyama, Mitsuhiko
Format: Article
Language:English
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일반외과학
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Summary:It is unclear whether high-definition (HD) imaging improves visibility and diagnostic ability in early gastric cancer (EGC) compared with standard-definition (SD) imaging. We aimed to compare the diagnostic performance and visibility scores of HD and SD ultraslim endoscopes in EGC. We used HD and SD ultraslim endoscopes to obtain 60 images with similar compositions of gastric environments. Of the 60 images, 30 showed EGC (15 images for each modality) and 30 showed no EGC (15 images for each modality). Seventeen endoscopists evaluated the presence and location of the lesions in each image. Diagnostic ability was compared between modalities. The color difference between a lesion and the surrounding mucosa (ΔE) was measured and compared between the modalities. The ability of HD to detect EGC was significantly higher than that of SD (accuracy: 80.8% vs. 71.6%, P=0.017; sensitivity: 94.9% vs. 76.5%, P
ISSN:2093-582X
2093-5641
DOI:10.5230/jgc.2021.21.e23