Advances in upper gastrointestinal endoscopy

Graham, David; Banks, Matthew

doi:10.12688/f1000research.6961.1

Cited by 9 publications

(3 citation statements)

References 30 publications

(38 reference statements)

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“…Gastrointestinal endoscopy has incomparable advantages over other diagnostic examinations like ultrasound and radiological images 24 . The development of LCI may be a new milestone in the history of endoscopy, which could guarantee relatively high diagnostic efficiency and accuracy by modulating the color of the imaging.…”

Section: Discussionmentioning

confidence: 99%

Linked color imaging application for improving the endoscopic diagnosis accuracy: a pilot study

Sun

Dong

et al. 2016

Sci Rep

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Endoscopy has been widely used in diagnosing gastrointestinal mucosal lesions. However, there are still lack of objective endoscopic criteria. Linked color imaging (LCI) is newly developed endoscopic technique which enhances color contrast. Thus, we investigated the clinical application of LCI and further analyzed pixel brightness for RGB color model. All the lesions were observed by white light endoscopy (WLE), LCI and blue laser imaging (BLI). Matlab software was used to calculate pixel brightness for red (R), green (G) and blue color (B). Of the endoscopic images for lesions, LCI had significantly higher R compared with BLI but higher G compared with WLE (all P < 0.05). R/(G + B) was significantly different among 3 techniques and qualified as a composite LCI marker. Our correlation analysis of endoscopic diagnosis with pathology revealed that LCI was quite consistent with pathological diagnosis (P = 0.000) and the color could predict certain kinds of lesions. ROC curve demonstrated at the cutoff of R/(G+B) = 0.646, the area under curve was 0.646, and the sensitivity and specificity was 0.514 and 0.773. Taken together, LCI could improve efficiency and accuracy of diagnosing gastrointestinal mucosal lesions and benefit target biopsy. R/(G + B) based on pixel brightness may be introduced as a objective criterion for evaluating endoscopic images.

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Section: Discussionmentioning

confidence: 99%

Linked color imaging application for improving the endoscopic diagnosis accuracy: a pilot study

Sun

Dong

et al. 2016

Sci Rep

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“…In addition, guidelines recommend using chromoendoscopy, which implies spraying a dye (methylene blue or indigo carmine) to enhance the features of the mucosa suspicious of dysplasia and facilitate recognition [37]. In recent years, the introduction of higher resolution endoscopes (HD) coupled with HD monitors (with a vertical resolution of 1080 pixels), provided sharper images [38] (Figure 1). The improvement in resolution allowed for better visualization of areas of suspected dysplasia and an easier targeting of biopsies [39].…”

Section: Surveillance Evolutionmentioning

confidence: 99%

Evolution and New Horizons of Endoscopy in Inflammatory Bowel Diseases

Parigi

Mastrorocco

Rio

et al. 2022

JCM

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Endoscopy is the mainstay of inflammatory bowel disease (IBD) evaluation and the pillar of colorectal cancer surveillance. Endoscopic equipment, both hardware and software, are advancing at an incredible pace. Virtual chromoendoscopy is now widely available, allowing the detection of subtle inflammatory changes, thus reducing the gap between endoscopic and histologic assessment. The progress in the field of artificial intelligence (AI) has been remarkable, and numerous applications are now in an advanced stage of development. Computer-aided diagnosis (CAD) systems are likely to reshape most of the evaluations that are now prerogative of human endoscopists. Furthermore, sophisticated tools such as endocytoscopy and probe-based confocal laser endomicroscopy (pCLE) are enhancing our assessment of inflammation and dysplasia. Finally, pCLE combined with molecular labeling could pave the way to a new paradigm of personalized medicine. This review aims to summarize the main changes that occurred in the field of IBD endoscopy and to explore the most promising novelties.

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“…Graham and Banks found specialist upper gastrointestinal endoscopists using i-scan could detect dysplasia within a Barrett's segment with 75% sensitivity. 7) We applied the i-scan-enhanced endoscopy (Pentax DE-FINA EPK-3000 Video Processors, with Pentax VNLJ10) with stroboscopy in patients with VC leukoplakia. We provided imaging of the lesions obtained using both WLE and iscan-enhanced endoscopy.…”

Section: Introductionmentioning

confidence: 99%

The Value of I-Scan Image-Enhanced Endoscopy in the Diagnosis of Vocal Cord Leukoplakia

Lee¹,

Eun²,

Park³

2018

J Korean Soc Laryngol Phoniatr Logop

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Background and Objectives：Detection of vascular abnormalities in vocal cord (VC) leukoplakia is important for the diagnosis of neoplastic change of the mucosa. The aim of this study was to investigate the value of i-scan in the differential diagnosis of VC leukoplakia based on visualization of abnormal vascular features. Material and Methods：Fifty-two patients with leukoplakia were enrolled in the study. Images of their larynx obtained using conventional white light endoscopy and an i-scan-enhanced endoscopy (Pentax DEFINA EPK-3000 Video Processors, with Pentax VNLJ10) were reviewed. The microvascular features of the lesions and vascular changes were analyzed and the results were compared with the histopathologic diagnosis. Results：Among the 52 leukoplakia patients, 7 (13.5%) patients had squamous hyperplasia, 10 (19.3%) mild dysplasia, 2 (3.8%) moderate dysplasia, 14 (26.9%) severe dysplasia, 4 (7.7%) carcinoma in situ, and 15 (28.8%) invasive squamous cell carcinoma on histopathologic examination. Using i-scan-enhanced endoscopy, abnormal vascular change with neoplastic neoangiogenesis was detected in most cases of malignant VC lesion [severe dysplasia : 9/14 (64.3%), carcinoma in situ: 2/4 (50.0%), and invasive squamous cell carcinoma : 11/15 (73.4%)]. Conclusion：i-scan-enhanced endoscopy is a useful optical technique for the diagnosis of VC leukoplakia. Our results suggest that i-scan may be a promising diagnostic tool in the early detection of laryngeal cancer.

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Advances in upper gastrointestinal endoscopy

Cited by 9 publications

References 30 publications

Linked color imaging application for improving the endoscopic diagnosis accuracy: a pilot study

Linked color imaging application for improving the endoscopic diagnosis accuracy: a pilot study

Evolution and New Horizons of Endoscopy in Inflammatory Bowel Diseases

The Value of I-Scan Image-Enhanced Endoscopy in the Diagnosis of Vocal Cord Leukoplakia

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