Blue Laser Imaging, Blue Light Imaging, and Linked Color Imaging for the Detection and Characterization of Colorectal Tumors

Yoshida, Naohisa; Dohi, Osamu; Inoue, Ken; Yasuda, Ritsu; Murakami, Takaaki; Hirose, Ryohei; Naito, Yuji; Inada, Yutaka; Ogiso, Kiyoshi; Morinaga, Yukiko; Kishimoto, Mitsuo; Rani, Rafiz Abdul; Itoh, Yoshito

doi:10.5009/gnl18276

Cited by 55 publications

(50 citation statements)

References 28 publications

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“…Regarding findings of NBI or BLI, SSL was diagnosed based on the presence of either crypts opening and dilated vessels, according to previous reports. 9,11 Lesions showing irregular vessel pattern were excluded due to the possibility of dysplasia. Among all lesions, the detail location and the distance from the anal verge were recorded at CSP for follow-up colonoscopy.…”

Section: Methodsmentioning

confidence: 99%

“…2,6,7 Operators have to differentiate benign lesions from cancerous lesions by white light image (WLI) and magnifying narrow-band imaging (NBI) or blue laser imaging (BLI). 2,8,9 Additionally, our previous study showed that the rate of local recurrence after CSP for polyps !10 mm was higher than that for polyps <10 mm. 10 Thus, CSP is not regularly recommended for neoplastic lesions !10 mm.…”

Section: Introductionmentioning

confidence: 98%

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Cold snare polypectomy for large sessile serrated lesions is safe but follow‐up is needed: a single‐centre retrospective study

et al. 2021

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Background and aim Cold snare polypectomy (CSP) is growing in popularity due to its safety and convenience. Its indication is benign tumours such as adenoma and sessile serrated lesions (SSLs) <10 mm in size. CSP for SSLs ≥10 mm in size has not been well examined. In this study, we aimed the feasibility of this treatment regarding therapeutic results and local recurrence. Methods This was a single-centre retrospective cohort study. We reviewed SSLs with or without dysplasia of 10–20 mm that were resected by CSP from 2014 to 2020. All tumours were diagnosed endoscopically as SSLs without dysplasia before CSP with the help of magnifying narrow band imaging or blue laser imaging. We analysed the lesion characteristics, en bloc resection, histopathological diagnosis, adverse events and local recurrence. We analysed risk factors for recurrence, comparing recurrent lesions to non-recurrent lesions. We also compared risk factors for lesions 10–14 mm in size to those for lesions 15–20 mm in size. Results We analysed 160 lesions in 100 patients ( Mage± SD=67.7±10.1 years). The polyp size ( M± SD) was 11.8±2.8 mm, and the en bloc resection rate was 60.0% (96 cases). The rates of massive perioperative haemorrhage, postoperative haemorrhage and perforation were 1.3%, 0% and 0%, respectively. Regarding histopathological diagnosis, two (1.2%) cases showed SSLs with high-grade dysplasia. The recurrence rate in 101 lesions with a median follow-up period of 18 months (interquartile range 12–24 months) was 5.0%. There were no significant risk factors such as tumour size, location, morphology and so on in terms of recurrence. All recurrent cases could be resected by repeat CSP. The recurrence rates of lesions 10–14 mm in size and 15–20 mm in size were 4.7% and 6.3%, respectively ( p=0.713). Conclusion CSP of SSLs ≥10 mm in size according to magnifying endoscopic diagnosis was safe and promising, but the rate of recurrence was slightly high, meaning that close follow-up is required.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Cold snare polypectomy for large sessile serrated lesions is safe but follow‐up is needed: a single‐centre retrospective study

et al. 2021

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“…Multi‐laser imaging endoscopic system (Fujifilm Co., Tokyo, Japan) enables BLI, BLI‐bright, and LCI via narrow‐band light observation with a light source comprising two lasers with wavelengths of 410 and 450 nm …”

Section: Iee For Diagnosis Of Kyoto Classification Of Gastritismentioning

confidence: 99%

“…Multi-laser imaging endoscopic system (Fujifilm Co., Tokyo, Japan) enables BLI, BLI-bright, and LCI via narrow-band light observation with a light source comprising two lasers with wavelengths of 410 and 450 nm. 49,50 Blue laser imaging is a high-intensity contrast imaging that allows superior visualization of microvascular and microsurface patterns similar to NBI. BLI-bright is a brighter BLI to illuminate a wide lumen.…”

Section: Bli and Lcimentioning

confidence: 99%

Can image‐enhanced endoscopy improve the diagnosis of Kyoto classification of gastritis in the clinical setting?

Dohi

Majima

Naito

et al. 2019

Digestive Endoscopy

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Endoscopic diagnosis of Helicobacter pylori (H. pylori) infection, the most common cause of gastric cancer, is very important to clarify high-risk patients of gastric cancer for reducing morbidity and mortality of gastric cancer. Recently, the Kyoto classification of gastritis was developed based on the endoscopic characteristics of H. pylori infection-associated gastritis for clarifying H. pylori infection status and evaluating risk factors of gastric cancer. Recently, magnifying endoscopy with narrow-band imaging (NBI) has reported benefits of the accuracy and reproducibility of endoscopic diagnosis for H. pylori-related premalignant lesions. In addition to NBI, various types of image-enhanced endoscopies (IEEs) are available including autofluorescence imaging, blue laser imaging, and linked color imaging. This review focuses on understanding the clinical applications and the corresponding evidences shown to improve the diagnosis of gastritis based on Kyoto classification using currently available advanced technologies of IEEs.

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“…BLI intensifies the blue light emission in the range of 410 nm, which enhances the visualization of the vessels and the mucosa. Alternatively, LCI accentuates color contrast by decreasing the intensity of blue-light and emphasizing red-light, providing better delineation and detection of lesions and inflammation [13,14].…”

Section: Introductionmentioning

confidence: 99%

A CNN CADx System for Multimodal Classification of Colorectal Polyps Combining WL, BLI, and LCI Modalities

Fonollà¹,

Zander

Schreuder

et al. 2020

Applied Sciences

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Colorectal polyps are critical indicators of colorectal cancer (CRC). Blue Laser Imaging and Linked Color Imaging are two modalities that allow improved visualization of the colon. In conjunction with the Blue Laser Imaging (BLI) Adenoma Serrated International Classification (BASIC) classification, endoscopists are capable of distinguishing benign and pre-malignant polyps. Despite these advancements, this classification still prevails a high misclassification rate for pre-malignant colorectal polyps. This work proposes a computer aided diagnosis (CADx) system that exploits the additional information contained in two novel imaging modalities, enabling more informative decision-making during colonoscopy. We train and benchmark six commonly used CNN architectures and compare the results with 19 endoscopists that employed the standard clinical classification model (BASIC). The proposed CADx system for classifying colorectal polyps achieves an area under the curve (AUC) of 0.97. Furthermore, we incorporate visual explanatory information together with a probability score, jointly computed from White Light, Blue Laser Imaging, and Linked Color Imaging. Our CADx system for automatic polyp malignancy classification facilitates future advances towards patient safety and may reduce time-consuming and costly histology assessment.

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Blue Laser Imaging, Blue Light Imaging, and Linked Color Imaging for the Detection and Characterization of Colorectal Tumors

Cited by 55 publications

References 28 publications

Cold snare polypectomy for large sessile serrated lesions is safe but follow‐up is needed: a single‐centre retrospective study

Cold snare polypectomy for large sessile serrated lesions is safe but follow‐up is needed: a single‐centre retrospective study

Can image‐enhanced endoscopy improve the diagnosis of Kyoto classification of gastritis in the clinical setting?

A CNN CADx System for Multimodal Classification of Colorectal Polyps Combining WL, BLI, and LCI Modalities

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