Classification of Barrett's epithelium by magnifying endoscopy

Endo, Takao; Awakawa, Teruhito; Takahashi, Hiroaki; Arimura, Yoshiaki; Itoh, Fumio; Yamashita, Kentaro; Sasaki, Shinsai; Yamamoto, Hiroyuki; Tang, Xiufen; Imai, Kohzoh

doi:10.1067/mge.2002.123420

Cited by 190 publications

(137 citation statements)

References 21 publications

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“…Mucosal surface patterns have been widely investigated to detect regions of dysplasia in BE using several endoscopic imaging techniques including chromoendoscopy [14], narrow band imaging (NBI) [41], and confocal laser endomicroscopy (CLE) [42]. Although studies from expert imaging centers showed promising results with high dysplasia detection accuracy [43], data establishing widespread utility is still lacking.…”

Section: Discussionmentioning

confidence: 99%

“…Volumetric en face OCT imaging enables rapid examination of mucosal surface patterns similar to conventional white light endoscopy (WLE) which are known markers of GI neoplasms [14] but with the ability to visualize sub-surface features [11,15]. However, limited imaging speed and instabilities in conventional proximal actuation scanning make images vulnerable to motion artifacts and nonuniform rotational distortion (NURD).…”

Section: Introductionmentioning

confidence: 99%

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Circumferential optical coherence tomography angiography imaging of the swine esophagus using a micromotor balloon catheter

Lee

Ahsen

Liang

et al. 2016

Biomed. Opt. Express

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Abstract:We demonstrate a micromotor balloon imaging catheter for ultrahigh speed endoscopic optical coherence tomography (OCT) which provides wide area, circumferential structural and angiographic imaging of the esophagus without contrast agents. Using a 1310 nm MEMS tunable wavelength swept VCSEL light source, the system has a 1.2 MHz A-scan rate and ~8.5 µm axial resolution in tissue. The micromotor balloon catheter enables circumferential imaging of the esophagus at 240 frames per second (fps) with a ~30 µm (FWHM) spot size. Volumetric imaging is achieved by proximal pullback of the micromotor assembly within the balloon at 1.5 mm/sec. Volumetric data consisting of 4200 circumferential images of 5,000 A-scans each over a 2.6 cm length, covering a ~13 cm 2 area is acquired in <18 seconds. A non-rigid image registration algorithm is used to suppress motion artifacts from non-uniform rotational distortion (NURD), cardiac motion or respiration. En face OCT images at various depths can be generated. OCT angiography (OCTA) is computed using intensity decorrelation between sequential pairs of circumferential scans and enables three-dimensional visualization of vasculature. Wide area volumetric OCT and OCTA imaging of the swine esophagus in vivo is demonstrated.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Circumferential optical coherence tomography angiography imaging of the swine esophagus using a micromotor balloon catheter

Lee

Ahsen

Liang

et al. 2016

Biomed. Opt. Express

View full text Add to dashboard Cite

show abstract

“…37 Endo and colleagues characterised the pit pattern of BE using magnification endoscopy and MB staining and found that IM was detected in patients who exhibited a tubular/villous pattern in their BE segment. 38 Similarly, Sharma's group found 97% of their cohort of patients with a ridged/ villous pattern on magnification chromoendoscopy using IC had IM and 100% with an irregular and distorted pattern exhibited HGD. 27 Fortun et al reported that enhanced magnification endoscopy with acetic acid allows clear visualisation of the epithelial pit patterns within BE, and targeted biopsy resulted in a high yield of IM and dysplasia.…”

Section: Potential Strategies To Enhance Surveillance 1) Advance Imagmentioning

confidence: 95%

Barrett's Esophagus: Diagnosis, Screening, Surveillance, and Controversies

Singh

Ragunath²,

Jankowski

2007

Gut Liver

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“…Endoscopic surveillance for BE may already be required in some Asian countries, including Japan, and some investigators have reported surveying methods for SSBE with special endoscopic techniques such as chromoendoscopy or image-enhanced endoscopy. [12][13][14][15] A reliable diagnosis of BE depends on the accurate endoscopic recognition of the key anatomic landmarks for the esophagogastric junction (EGJ) and squamocolumnar junction (SCJ). The precise localization of the EGJ is much more difficult than the endoscopic identification of the SCJ.…”

Section: Introductionmentioning

confidence: 99%

Endoscopic Definition of Esophagogastric Junction for Diagnosis of Barrett's Esophagus: Importance of Systematic Education and Training

Ishimura

Amano

Kinoshita

2009

Digestive Endoscopy

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The diagnosis of Barrett's esophagus (BE) requires an accurate recognition of the columnar-lined esophagus at endoscopy. However, a universally accepted standardized endoscopic grading system of BE was lacking prior to the development of the Prague 'circumferential and maximal' criteria. In this system, the landmark for the esophagogastric junction (EGJ) is the proximal end of the gastric folds, not the distal end of the palisade vessels, which are used to endoscopically identify the EGJ in Japan. Although the circumferential and maximal criteria are clinically relevant, an important shortcoming of this system may be failure to identify short-segment BE, a lesion that is found frequently in the Japanese. To compare the diagnostic yield for BE when using the palisade vessels versus gastric folds as a landmark for the EGJ, we evaluated interobserver diagnostic concordance. The endoscopic identification of the EGJ using both landmarks resulted in unacceptably low kappa coefficients of reliability. However, there was a statistically significant improvement after the participants were thoroughly trained in identification of the EGJ during the endoscopic study. Although it remains controversial which landmark is better for the endoscopic diagnosis of BE, it is important to systematically educate and train endoscopists in order to improve diagnostic consistency in patients with BE.

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Classification of Barrett's epithelium by magnifying endoscopy

Cited by 190 publications

References 21 publications

Circumferential optical coherence tomography angiography imaging of the swine esophagus using a micromotor balloon catheter

Circumferential optical coherence tomography angiography imaging of the swine esophagus using a micromotor balloon catheter

Barrett's Esophagus: Diagnosis, Screening, Surveillance, and Controversies

Endoscopic Definition of Esophagogastric Junction for Diagnosis of Barrett's Esophagus: Importance of Systematic Education and Training

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