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Topic highlight on Texture and color enhancement imaging in gastrointestinal diseases

World Journal of Gastroenterology 2024年第14期30卷 1934-1940页

作者： Osamu Toyoshima Toshihiro Nishizawa Keisuke Hata Department of Gastroenterology Toyoshima Endoscopy ClinicTokyo 157-0066Japan Department of Gastroenterology and Hepatology International University of Health and WelfareNarita HospitalNarita 286-8520Japan Department of Gastroenterology Nihonbashi Muromachi Mitsui Tower Midtown ClinicTokyo 103-0022Japan

Olympus Corporation developed Texture and color enhancement imaging(TXI)as a novel image-enhancing endoscopic technique.This topic highlights a series of hot-topic articles that investigated the efficacy of TXI for gastrointestinal disease identification in the clinical setting.A randomized controlled trial demonstrated improvements in the colorectal adenoma detection rate(ADR)and the mean number of adenomas per procedure(MAP)of TXI compared with those of white-light imaging(WLI)observation(58.7%vs 42.7%,adjusted relative risk 1.35,95%CI:1.17-1.56;1.36 vs 0.89,adjusted incident risk ratio 1.48,95%CI:1.22-1.80,respectively).A cross-over study also showed that the colorectal MAP and ADR in TXI were higher than those in WLI(1.5 vs 1.0,adjusted odds ratio 1.4,95%CI:1.2-1.6;58.2%vs 46.8%,1.5,1.0-2.3,respectively).A randomized controlled trial demonstrated non-inferiority of TXI to narrow-band imaging in the colorectal mean number of adenomas and sessile serrated lesions per procedure(0.29 vs 0.30,difference for non-inferiority-0.01,95%CI:-0.10 to 0.08).A cohort study found that scoring for ulcerative colitis severity using TXI could predict relapse of ulcerative colitis.A cross-sectional study found that TXI improved the gastric cancer detection rate compared to WLI(0.71%vs 0.29%).A cross-sectional study revealed that the sensitivity and accuracy for active Helicobacter pylori gastritis in TXI were higher than those of WLI(69.2%vs 52.5%and 85.3%vs 78.7%,res-pectively).In conclusion,TXI can improve gastrointestinal lesion detection and qualitative diagnosis.Therefore,further studies on the efficacy of TXI in clinical practice are required.

关键词： Endoscopy Texture and color enhancement imaging White-light imaging Narrow-band imaging colorectal neoplasm Gastric cancer Adenoma Ulcerative colitis Helicobacter infections Colonoscopy

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Improved visibility of colorectal tumor by Texture and color enhancement imaging with indigo carmine

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World Journal of Gastrointestinal Endoscopy 2023年第12期15卷 690-698页

作者： Takuma Hiramatsu Toshihiro Nishizawa Yosuke Kataoka Shuntaro Yoshida Tatsuya Matsuno Hiroya Mizutani Hideki Nakagawa Hirotoshi Ebinuma Mitsuhiro Fujishiro Osamu Toyoshima Department of Gastroenterology Graduate School of MedicineThe University of TokyoTokyo 113-8655Japan Department of Gastroenterology and Hepatology International University of Health and WelfareNarita HospitalNarita 286-8520Japan Department of Gastroenterology Toyoshima Endoscopy ClinicTokyo 157-0066Japan

BACKGROUND Accurate diagnosis and early resection of colorectal polyps are important to prevent the occurrence of colorectal cancer.However,technical factors and morphological factors of polyps itself can lead to missed diagnoses.Imageenhanced endoscopy and chromoendoscopy(CE)have been developed to facilitate an accurate diagnosis.There have been no reports on visibility using a combination of Texture and color enhancement imaging(TXI)and CE for colorectal tumors.AIM To investigate the visibility of margins and surfaces with the combination of TXI and CE for colorectal lesions.METHODS This retrospective study included patients who underwent lower gastrointestinal endoscopy at the Toyoshima Endoscopy Clinic.We extracted polyps that were resected and diagnosed as adenomas or serrated polyps(hyperplastic polyps and sessile serrated lesions)from our endoscopic database.An expert endoscopist performed the lower gastrointestinal endoscopies and observed the lesion using white light imaging(WLI),TXI,CE,and TXI+CE modalities.Indigo carmine dye was used for CE.Three expert endoscopists rated the visibility of the margin and surface patterns in four ranks,from 1 to 4.The primary outcomes were the average visibility scores for the margin and surface patterns based on the WLI,TXI,CE,and TXI+CE observations.Visibility scores between the four modalities were compared by the Kruskal-Wallis and Dunn tests.RESULTS A total of 48 patients with 81 polyps were assessed.The histological subtypes included 50 tubular adenomas,16 hyperplastic polyps,and 15 sessile serrated lesions.The visibility scores for the margins based on WLI,TXI,CE,and TXI+CE were 2.44±0.93,2.90±0.93,3.37±0.74,and 3.75±0.49,respectively.The visibility scores for the surface based on WLI,TXI,CE,and TXI+CE were 2.25±0.80,2.84±0.84,3.12±0.72,and 3.51±0.60,respectively.The visibility scores for the detection and surface on TXI were significantly lower than that on CE but higher than that on WLI(P<0.001).The visibility scores for the margin and surface on TXI+CE were si

关键词： Texture and color enhancement imaging Indigo carmine Adenoma Colonoscopy Sessile serrated lesion

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Texture and color enhancement imaging in magnifying endoscopic evaluation of colorectal adenomas

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World Journal of Gastrointestinal Endoscopy 2022年第2期14卷 96-105页

作者： Osamu Toyoshima Toshihiro Nishizawa Shuntaro Yoshida Tomoharu Yamada Nariaki Odawara Tatsuya Matsuno Miho Obata Ken Kurokawa Chie Uekura Mitsuhiro Fujishiro Gastroenterology Toyoshima Endoscopy ClinicTokyo 157-0066Japan Department of Gastroenterology and Hepatology International University of Health and WelfareNarita HospitalNarita 286-8520ChibaJapan Department of Gastroenterology Graduate School of MedicineThe University of TokyoTokyo 113-8655Japan

BACKGROUND Olympus Corporation has developed Texture and color enhancement imaging(TXI)as a novel image-enhancing endoscopic technique.AIM To investigate the effectiveness of TXI in identifying colorectal adenomas using magnifying observation.METHODS colorectal adenomas were observed by magnified endoscopy using white light imaging(WLI),TXI,narrow band imaging(NBI),and chromoendoscopy(CE).This study adopted mode 1 of TXI.Adenomas were confirmed by histological examination.TXI visibility was compared with the visibility of WLI,NBI,and CE for tumor margin,and vessel and surface patterns of the Japan NBI expert team(JNET)classification.Three expert endoscopists and three non-expert endoscopists evaluated the visibility scores,which were classified as 1,2,3,and 4.RESULTS Sixty-one consecutive adenomas were evaluated.The visibility score for tumor margin of TXI(3.47±0.79)was significantly higher than that of WLI(2.86±1.02,Pcolorectal adenomas.

关键词： Texture and color enhancement imaging Adenoma Colonoscopy Narrow band imaging Japan NBI Expert Team Olympus

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Texture and color enhancement imaging for detecting colorectal adenomas: Good, but not good enough

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World Journal of Gastrointestinal Endoscopy 2022年第7期14卷 471-473页

作者： Ying Wang Chen-Yu Sun Lowe Scott Dan-Dan Wu Xia Chen South District of Endoscopic Center The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina AMITA Health Saint Joseph Hospital Chicago ChicagoIL 60657United States College of Osteopathic Medicine Kansas City UniversityKansas CityKS 64106United States Department of Nursing The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina

Texture and color enhancement imaging(TXI)has been developed as a novel image-enhancing endoscopy.However,the effectiveness of TXI detecting adenomas is inferior to narrow band imaging.Thus,future studies will need to focus on investigating the feasibility of such combination in clinical settings in order to provide patients with more accurate diagnoses.

关键词： White light imaging Texture and color enhancement imaging Narrow band imaging colorectal adenomas

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Precision in detecting colon lesions:A key to effective screening policy but will it improve overall outcomes?

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World Journal of Gastrointestinal Endoscopy 2024年第3期16卷 102-107页

作者： Luis Ramon Rabago Maria Delgado Galan Department of Gastroenterology Hospital San RafaelMadrid 28016Spain Gastroenterology Department Hospital Severo OchoaLeganes 28914Spain

Colonoscopy is the gold standard for the screening and diagnosis of colorectal cancer,resulting in a decrease in the incidence and mortality of colon cancer.However,it has a 21%rate of missed polyps.Several strategies have been devised to increase polyp detection rates and improve their characterization and delimi-tation.These include chromoendoscopy(CE),the use of other devices such as Endo cuffs,and major advances in endoscopic equipment[high definition,magnification,narrow band imaging,i-scan,flexible spectral imaging color enhancement,Texture and color enhancement imaging(TXI),etc.].In the retrospective study by Hiramatsu et al,they compared white-light imaging with CE,TXI,and CE+TXI to determine which of these strategies allows for better definition and delimitation of polyps.They concluded that employing CE associated with TXI stands out as the most effective method to utilize.It remains to be demonstrated whether these results are extrapolatable to other types of virtual CE.Additionally,further investigation is needed in order to ascertain whether this strategy could lead to a reduction in the recurrence of excised lesions and potentially lower the occurrence of interval cancer.

关键词： Colonoscopy screening Interval colorectal cancer Post colonoscopy colorectal cancer chromoendoscopy Virtual chromoendoscopy high-definition whitelight endoscopy Texture and color enhancement imaging Indigo carmine Adenoma Sessile serrated lesion

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