Appropriate Color Enhancement Settings for Blue Laser Imaging Facilitates the Diagnosis of Early Gastric Cancer with High Color Contrast

Hiraoka, Yuji; Mıura, Yoshimasa; Osawa, Hiroyuki; Nomoto, Yoshie; Takahashi, Haruo; Tsunoda, Masato; Nagayama, Shiho; Ueno, Takashi; Lefor, Alan Kawarai; Yamamoto, Hironori

doi:10.5230/jgc.2021.21.e13

Cited by 8 publications

(5 citation statements)

References 23 publications

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“…A previously published visibility scoring system 19 was used (Figure 2). A score of 4 indicated excellent visibility; it was easy to recognize the delineation of target mucosa.…”

Section: Methodsmentioning

confidence: 99%

Impact of linked color imaging and blue laser imaging on the diagnosis of esophageal squamous cell carcinoma in iodine unstained areas

Tsunoda

Mıura

Osawa

et al. 2023

The Kaohsiung J of Med Scie

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The pink color sign in iodine unstained areas is useful to differentiate esophageal squamous cell carcinoma (ESCC) from other lesions. However, some ESCCs have obscure color findings which affect the ability of endoscopists to differentiate these lesions and determine the resection line. Using white light imaging (WLI), linked color imaging (LCI) and blue laser imaging (BLI), 40 early ESCCs were retrospectively evaluated using images before and after iodine staining. Visibility scores for ESCC by expert and non-expert endoscopists were compared using these three modalities and color differences measured for malignant lesions and surrounding mucosa. BLI had the highest score and color difference without iodine staining. Each determination with iodine was much higher than without iodine regardless of the modality.With iodine, ESCC mainly appeared pink, purple and green using WLI, LCI and BLI, respectively and visibility scores determined by non-experts and experts were significantly higher for LCI (both p < 0.001) and BLI (p = 0.018 and p < 0.001) than for WLI. The score with LCI was significantly higher than with BLI among non-experts (p = 0.035). With iodine, the color difference using LCI was twice that with WLI and one with BLI was significantly larger than with WLI (p < 0.001).These greater tendencies were found regardless of location, depth of cancer or intensity of pink color using WLI. In conclusion, areas of ESCC unstained by iodine were easily recognized using LCI and BLI. Visibility of these lesions is excellent even by non-expert endoscopists, suggesting that this method is useful to diagnose ESCC and determine the resection line.

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“…A previously published visibility scoring system 19 was used (Figure 2). A score of 4 indicated excellent visibility; it was easy to recognize the delineation of target mucosa.…”

Section: Methodsmentioning

confidence: 99%

Impact of linked color imaging and blue laser imaging on the diagnosis of esophageal squamous cell carcinoma in iodine unstained areas

Tsunoda

Mıura

Osawa

et al. 2023

The Kaohsiung J of Med Scie

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“…In addition, other innovative endoscopic methods were proposed for increasing the accuracy of biopsy collection [ 46 ]. Multiple recent studies underlined the utility of blue laser imaging in diagnosing gastric cancer regardless of the stage and even gastric metaplasia [ 47 , 48 , 49 , 50 , 51 ] ( Table 1 ).…”

Section: Who Should Be Tested Why and How To Choose The Testing Method?mentioning

confidence: 99%

Traditional and Modern Diagnostic Approaches in Diagnosing Pediatric Helicobacter pylori Infection

2022

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Helicobacter pylori (H. pylori) is the most common bacterial infection worldwide, is usually acquired during childhood and is related to gastric carcinogenesis during adulthood. Therefore, its early proper diagnosis and subsequent successful eradication represent the cornerstones of gastric cancer prevention. The aim of this narrative review was to assess traditional and modern diagnostic methods in terms of H. pylori diagnosis. Several invasive and non-invasive methods were described, each with its pros and cons. The invasive diagnostic methods comprise endoscopy with biopsy, rapid urease tests, histopathological exams, cultures and biopsy-based molecular tests. Among these, probably the most available, accurate and cost-effective test remains histology, albeit molecular tests definitely remain the most accurate despite their high costs. The non-invasive tests consist of urea breath tests, serology, stool antigens and non-invasive molecular tests. Urea breath tests and stool antigens are the most useful in clinical practice both for the diagnosis of H. pylori infection and for monitoring the eradication of this infection after therapy. The challenges related to accurate diagnosis lead to a choice that must be based on H. pylori virulence, environmental factors and host peculiarities.

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“…However, it's worth noting that this enhancement, to some extent, compromises the consistency between examiners. To enhance diagnostic accuracy and align with clinical requirements for consistency between examiners, it becomes imperative to improve the consistency of individual observation indices and minimize subjectivity in the evaluation process [36]. Striking the right balance in color enhancement settings is pivotal, ensuring optimal visibility without sacrificing reliability and agreement among different examiners.…”

Section: Mechanismmentioning

confidence: 99%

Linked Color Imaging in Endoscopic Diagnosis for Helicobacter pylori

Chen,

Qiao

2024

Towards the Eradication of Helicobacter Pylori Infection - Rapid Diagnosis and Precision Treatment

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Linked color imaging (LCI), distinct from the traditional red emphasis in endoscopic imaging, utilizes narrow-band light and red signal processing to enhance contrast in mucosal color. Redness and erosion triggered by inflammation are recognized as typical signs of Helicobacter pylori (HP) infection. Notably, these visual cues are readily identifiable through the LCI mode. Leveraging the LCI observation mode significantly improves the accuracy of diagnosing gastritis associated with HP, providing accurate diagnostic performance and precise localization. LCI demonstrates superior diagnostic accuracy in detecting HP infections, including their precise localization, when compared to traditional white light endoscopy. It also holds promise for enhancing the precision of sampling for HP cultures and determining antibiotic susceptibility. Integrating LCI with the Kyoto Classification of Gastritis may enhance the endoscopic diagnosis and confirmation of HP infection eradication, subsequently augmenting the capacity of gastrointestinal endoscopists and general practitioners to identify HP infections through endoscopic imagery.

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Appropriate Color Enhancement Settings for Blue Laser Imaging Facilitates the Diagnosis of Early Gastric Cancer with High Color Contrast

Cited by 8 publications

References 23 publications

Impact of linked color imaging and blue laser imaging on the diagnosis of esophageal squamous cell carcinoma in iodine unstained areas

Impact of linked color imaging and blue laser imaging on the diagnosis of esophageal squamous cell carcinoma in iodine unstained areas

Traditional and Modern Diagnostic Approaches in Diagnosing Pediatric Helicobacter pylori Infection

Linked Color Imaging in Endoscopic Diagnosis for Helicobacter pylori

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