Optimal band imaging system can facilitate detection of changes in depressed-type early gastric cancer

Osawa, Hiroyuki; Yoshizawa, Mitsuyo; Yamamoto, Hironori; Kita, Hiroto; Satoh, Kiichi; Ohnishi, Hirohide; Nakano, Hidetoshi; Wada, Masahiro; Arashiro, Masayuki; Tsukui, Mamiko; Ido, Kenichi; Sugano, Kentaro

doi:10.1016/j.gie.2007.06.067

Cited by 71 publications

(56 citation statements)

References 23 publications

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“…Based on the various lesions, different spectral images will be selected (29), which can achieve the purpose of electronic virtual chromoendoscopy. Some researchers have used FICE to diagnose gastrointestinal lesions and received satisfactory results in the world (30)(31)(32). In this study, the best wavelength combinations that we selected were as follows: R=540 nm, G=490 nm, B=420 nm and R=550 nm, G=500 nm, B=470 nm, which could clearly show the lesions.…”

Section: Discussionmentioning

confidence: 99%

Fujinon intelligent color enhancement for the diagnosis of early esophageal squamous cell carcinoma and precancerous lesion

Shen²,

Yu³

et al. 2020

Turk J Gastroenterol

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Background/Aims: Esophageal squamous cell carcinoma is a common malignant tumor in recent years, and the key for improving the survival rate is early diagnosis and treatment. Computed virtual chromoendoscopy with the Fujinon intelligent color enhancement (FICE) system was reported to improve visualization of neoplastic and nonneoplastic lesions in gastroscopy and colonoscopy. The purpose of this study was to evaluate the value of FICE in the diagnosis of early esophageal squamous cell carcinoma and precancerous lesions. Materials and Methods: Two hundred fifty-seven patients with suspicious lesions of the esophagus were examined successively by FICE, magnifying FICE, Lugol chromoendoscopy, and magnifying Lugol chromoendoscopy in the hospital. The lesions and the intrapapillary capillary loop (IPCL, microvessels at the surface of esophageal carcinoma) were observed and compared with the pathologic diagnosis that was regarded as the golden standard. Results: The positive rates of early esophageal squamous cell carcinoma were 92.6% and 88.9% as examined by FICE and Lugol chromoendoscopy (p>0.05), and 96.3% and 92.6% as examined by magnifying FICE and magnifying Lugol chromoendoscopy (p>0.05), respectively. The magnifying FICE could observe the IPCL of the esophagus clearly. Early esophageal squamous cell carcinoma and high-grade intraepithelial neoplasia were mainly type IV and type V. Low-grade intraepithelial neoplasia and esophagitis were type II and type III, and normal esophagus was type I; however, the observation of the IPCL by magnifying Lugol chromoendoscopy was not clear. Conclusion: Fujinon intelligent color enhancement and magnifying FICE are complements to Lugol chromoendoscopy and magnifying Lugol chromoendoscopy in the diagnosis of early esophageal lesions.

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Section: Discussionmentioning

confidence: 99%

Fujinon intelligent color enhancement for the diagnosis of early esophageal squamous cell carcinoma and precancerous lesion

Shen²,

Yu³

et al. 2020

Turk J Gastroenterol

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show abstract

“…tumor surface similar to depressed type cancer ( Figure 5) [5] . In addition, the FICE system is quite useful for the detection of minute gastric cancer, even without magnification.…”

Section: C B Amentioning

confidence: 95%

“…The EG-590ZW scope can magnify endoscopic images optically up to 135-fold [5][6][7] through the use of a zoom attachment. It is easy to change wavelengths in each endoscopic procedure, because the system allows selection of a setting from up to ten possible settings.…”

Section: Instrument Specifications and Selection Of A Set Of Wavelengthsmentioning

confidence: 99%

“…It is easy to change wavelengths in each endoscopic procedure, because the system allows selection of a setting from up to ten possible settings. Osawa et al [5] and Yoshizawa et al [6,7] at the Jichi Medical University in Japan selected the best setting that enhances the demarcation lines more strongly between cancerous lesions and surrounding areas in the case of EGC without magnification. For most cases of gastric cancer, the best images were obtained with use of a specific combination of the following three wavelengths: 470 nm for blue (B), 500 nm for green (G), and 550 nm for red (R) that also produces a brighter image of various types of gastric cancers, that is, depressed, flat and elevated type.…”

Section: Instrument Specifications and Selection Of A Set Of Wavelengthsmentioning

confidence: 99%

“…Additionally, FICE provides optimal band image with the same light intensity as conventional endoscope, implying that the FICE system can display clear images even without magnification. Indeed, FICE can facilitate detection of changes in EGC without magnification and confirm accurately the diagnosis of cancer with low or half magnification [5][6][7] . Endoscopic submucosal dissection (ESD) was developed in the past 10 years as a more reliable method of endoscopic resection than endoscopic mucosal resection (EMR) [8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

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Diagnosis of extent of early gastric cancer using flexible spectral imaging color enhancement

Osawa

Yamamoto²,

Mıura³

et al. 2012

WJGE

Self Cite

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The demarcation line between the cancerous lesion and the surrounding area could be easily recognized with flexible spectral imaging color enhancement (FICE) system compared with conventional white light images. The characteristic finding of depressed-type early gastric cancer (EGC) in most cases was revealed as reddish lesions distinct from the surrounding yellowish noncancerous area without magnification. Conventional endoscopic images provide little information regarding depressed lesions located in the tangential line, but FICE produces higher color contrast of such cancers. Histological findings in depressed area with reddish color changes show a high density of glandular structure and an apparently irregular microvessel in intervening parts between crypts, resulting in the higher color contrast of FICE image between cancer and surrounding area. Some depressed cancers are shown as whitish lesion by conventional endoscopy. FICE also can produce higher color contrast between whitish cancerous lesions and surrounding atrophic mucosa. For nearly flat cancer, FICE can produce an irregular structural pattern of cancer distinct from that of the surrounding mucosa, leading to a clear demarcation. Most elevatedtype EGCs are detected easily as yellowish lesions with clearly contrasting demarcation. In some cases, a partially reddish change is accompanied on the tumor surface similar to depressed type cancer. In addition, the FICE system is quite useful for the detection of minute gastric cancer, even without magnification. These new contrasting images with the FICE system may have the potential to increase the rate of detection of gastric cancers and screen for them more effectively as well as to determine the extent of EGC.

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Video Endoscope: How Does it Work?

Barlow

2011

Practical Pediatric Gastrointestinal Endoscopy

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Optimal band imaging system can facilitate detection of changes in depressed-type early gastric cancer

Cited by 71 publications

References 23 publications

Fujinon intelligent color enhancement for the diagnosis of early esophageal squamous cell carcinoma and precancerous lesion

Fujinon intelligent color enhancement for the diagnosis of early esophageal squamous cell carcinoma and precancerous lesion

Diagnosis of extent of early gastric cancer using flexible spectral imaging color enhancement

Video Endoscope: How Does it Work?

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