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Ohno A, Miyamoto N, Kaji R, Shirakawa T, Watanabe M, Sumi R, Jinbo Y, Kusuhara M, Miyoshi J, Hisamatsu T. The influence of color vision deficiency on vessel visibility during colorectal endoscopic submucosal dissection and the potential advantage of red dichromatic imaging to achieve color vision barrier-free. DEN OPEN 2025; 5:e410. [PMID: 39035636 PMCID: PMC11258462 DOI: 10.1002/deo2.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 06/27/2024] [Accepted: 06/30/2024] [Indexed: 07/23/2024]
Abstract
Objectives Although color information is important in gastrointestinal endoscopy, there are limited studies on how endoscopic images are viewed by people with color vision deficiency. We aimed to investigate the differences in the visibility of blood vessels during endoscopic submucosal dissection (ESD) among people with different color vision characteristics and to examine the effect of red dichromatic imaging (RDI) on blood vessel visibility. Methods Seventy-seven pairs of endoscopic images of white light imaging (WLI) and RDI of the same site were obtained during colorectal ESD. The original images were set as type C (WLI-C and RDI-C), a common color vision. These images were computationally converted to simulate images perceived by people with color vision deficiency protanope (Type P) or deutanope (Type D) and denoted as WLI-P and RDI-P or WLI-D and RDI-D. Blood vessels and background submucosa that needed to be identified during ESD were selected in each image, and the color differences between these two objects were measured using the color difference (ΔE 00) to assess the visibility of blood vessels. Results ΔE 00 between a blood vessel and the submucosa was greater under RDI (RDI-C/P/D: 24.05 ± 0.64/22.85 ± 0.66/22.61 ± 0.64) than under WLI (WLI-C/P/D: 22.26 ± 0.60/5.19 ± 0.30/8.62 ± 0.42), regardless of color vision characteristics. This improvement was more pronounced in Type P and Type D and approached Type C in RDI. Conclusions Color vision characteristics affect the visibility of blood vessels during ESD, and RDI improves blood vessel visibility regardless of color vision characteristics.
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Affiliation(s)
- Akiko Ohno
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
| | - Naohiko Miyamoto
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
| | - Ryosuke Kaji
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
| | - Takahiro Shirakawa
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
| | - Moegi Watanabe
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
| | - Ryutaro Sumi
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
| | - Yoko Jinbo
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
| | - Mitsunori Kusuhara
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
- Endoscopy DivisionNational Cancer Center HospitalTokyoJapan
| | - Jun Miyoshi
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
| | - Tadakazu Hisamatsu
- Department of Gastroenterology and HepatologyKyorin University School of MedicineTokyoJapan
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Zhang Y, Sheng C, Fan Z, Liu Y, Liu X, Duan H, Dai H, Lyu Z, Yang L, Song F, Song F, Huang Y, Chen K. Risk-stratified screening and colorectal cancer incidence and mortality: A retrospective study from the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial. Prev Med 2024; 187:108117. [PMID: 39178994 DOI: 10.1016/j.ypmed.2024.108117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 08/19/2024] [Accepted: 08/20/2024] [Indexed: 08/26/2024]
Abstract
OBJECTIVE To determine whether risk stratification can optimize the benefits of flexible sigmoidoscopy (FSG) screening. METHODS The Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial was conducted from 1993 to 2001 in the United States. A colorectal cancer (CRC) risk stratification tool was developed in the control arm (n = 64,207) from the PLCO cohort and validated in the UK Biobank (n = 270,726). PLCO participants (n = 130,021) were classified into low-, medium-, and high-risk groups. Cumulative incidence and mortality were estimated using the Kaplan-Meier method. Cox proportional hazards models were used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for the associations between screening and CRC incidence and mortality. RESULTS The CRC risk stratification tool was based on age, gender, body mass index, smoking status, family history of CRC, diabetes, regular use of aspirin, and CRC screening history. Compared with the control arm, FSG screening was significantly associated with a reduction in mortality in both the medium-risk (HR = 0.76, 95% CI = 0.63-0.92) and high-risk groups (0.58, 0.46-0.73), but not in the low-risk group (0.85, 0.61-1.19). FSG screening also reduced distal CRC incidence and mortality in the medium-risk and high-risk groups. Furthermore, it was associated with a reduction in incidence (0.74, 0.59-0.92) and mortality (0.59, 0.40-0.87) of proximal colon cancer in the high-risk group. CONCLUSIONS FSG screening yielded more benefits for the high-risk group than for the low-risk and medium-risk groups, supporting the development of a risk-stratified CRC screening strategy.
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Affiliation(s)
- Yu Zhang
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Chao Sheng
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Zeyu Fan
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Ya Liu
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Xiaomin Liu
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Hongyuan Duan
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Hongji Dai
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Zhangyan Lyu
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Lei Yang
- Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing Office for Cancer Prevention and Control, Peking University Cancer Hospital & Institute, 100142 Beijing, China
| | - Fangfang Song
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Fengju Song
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China
| | - Yubei Huang
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China.
| | - Kexin Chen
- Department of Epidemiology and Biostatistics, Key Laboratory of Molecular Cancer Epidemiology, Key Laboratory of Prevention and Control of Human Major Diseases, Ministry of Education, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin Medical University, 300060 Tianjin, China.
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Luo Q, Luo J, Luan Z, Xu K, Tian L, Zhang K, Peng X, Yuan M, Zheng C, Shu Z, Zhang Y, Tan S, Dan R, Mequanint K, Fan C, Xing M, Yang S. Blue Laser Triggered Hemostatic Peptide Hydrogel for Gastrointestinal Bleeding Treatment. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2405290. [PMID: 39011814 DOI: 10.1002/adma.202405290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 06/16/2024] [Indexed: 07/17/2024]
Abstract
In an emergency, nonvariceal upper gastrointestinal bleeding (NVUGIB), endoscopic hemostasis is considered the gold standard intervention. However, current endoscopic hemostasis is very challenging to manage bleeding in large-diameter or deep lesions highly prone to rebleeding risk. Herein, a novel hemostatic peptide hydrogel (HPH) is reported, consisting of a self-assembly peptide sequence CFLIVIGSIIVPGDGVPGDG (PFV) and gelatin methacryloyl (GelMA), which can be triggered by blue laser endoscopy (BLE) for nonvariceal upper gastrointestinal bleeding treatment without recurring bleeding concerns. Upon contact with GelMA solution, PFV immediately fibrillates into β-sheet nanofiber and solvent-induced self-assembly to form HPH gel. HPH nanofiber networks induced ultrafast coagulation by enveloping blood cells and activating platelets and coagulation factors even to the blood with coagulopathy. Besides its remarkable hemostatic performance in artery and liver injury models, HPH achieves instant bleeding management in porcine NVUGIB models within 60 s by preventing the rebleeding risk. This work demonstrates an extraordinary hemostatic agent for NVUGIB intervention by BLE for the first time, broadening potential application scenarios, including patients with coagulopathy and promising clinical prospects.
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Affiliation(s)
- Qiang Luo
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Jie Luo
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Zhaohui Luan
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Kaige Xu
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, R3T 2N2, Manitoba, Canada
| | - Lixing Tian
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Kebin Zhang
- Clinical Medical Research Center, Xinqiao Hospital, No.183, Xinqiao Street, Chongqing, 400037, China
| | - Xue Peng
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Mengxue Yuan
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Chuanhao Zheng
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Zhenzhen Shu
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Yuchen Zhang
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Shali Tan
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Ruijue Dan
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Kibret Mequanint
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, N6A 5B9, Canada
| | - Chaoqiang Fan
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
| | - Malcolm Xing
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, R3T 2N2, Manitoba, Canada
| | - Shiming Yang
- Department of Gastroenterology, Xinqiao Hospital, No. 183, Xinqiao Street, Chongqing, 400037, China
- Chongqing Municipality Clinical Research Center for Gastroenterology, Chongqing, 400037, China
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Al Maliki H, Monahan KJ. The diagnostic yield of colonoscopic surveillance following resection of early age onset colorectal cancer. United European Gastroenterol J 2024; 12:469-476. [PMID: 38170450 PMCID: PMC11091789 DOI: 10.1002/ueg2.12516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/20/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND The primary benefit of post-colorectal cancer (CRC) colonoscopic surveillance is to detect and remove premalignant lesions to prevent metachronous CRC. Current guidelines for long-term colonoscopic surveillance post early age onset CRC (EOCRC) resection are based on limited evidence. The aims of this study were to assess the diagnostic yield of colonoscopic surveillance post-EOCRC resection and identify molecular and clinicopathological risk factors associated with advanced neoplasia. METHODOLOGY A retrospective cohort study of prospectively collected data was conducted at St Mark's hospital, London, United Kingdom, for patients diagnosed with EOCRC who underwent at least one episode of post-CRC colonoscopic surveillance between 1978 and 2022. We collected clinicopathological data including tumour molecular status and neoplasia detection rates. RESULTS In total, 908 colonoscopic surveillance procedures were performed in 195 patients over 2581.3 person-years of follow-up. The diagnostic yields of metachronous CRC, advanced adenomas and non-advanced adenomas were 1.76%, 3.41% and 22.69% respectively. Sixteen patients (8.21%) developed metachronous CRC, and the majority (87.5%) were detected more than 3 years post index EOCRC diagnosis. Detection of advanced neoplasia was significantly higher in EOCRC patients with Lynch syndrome (26.15%) compared with those in whom Lynch syndrome was excluded (13.13%) (OR, 2.343; 95% CI, 1.014-5.256; p = 0.0349). CONCLUSIONS During colonoscopic surveillance post-EOCRC resection, the long-term risk of developing metachronous advanced neoplasia remains high in the context of Lynch syndrome, but this trend is not as clearly evident when Lynch syndrome has been excluded.
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Affiliation(s)
- Husam Al Maliki
- Department of Surgery and CancerImperial College LondonLondonUK
| | - Kevin J. Monahan
- Department of Surgery and CancerImperial College LondonLondonUK
- Centre for Familial Intestinal CancerSt Mark's HospitalLondonUK
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Lu YB, Lu SC, Li FD, Le PH, Zhang KH, Sun ZZ, Huang YN, Weng YC, Chen WT, Fu YW, Qian JB, Hu B, Xu H, Chiu CT, Xu QW, Gong W. Artificial intelligence-aided diagnostic imaging: A state-of-the-art technique in precancerous screening. J Gastroenterol Hepatol 2024; 39:544-551. [PMID: 38059883 DOI: 10.1111/jgh.16429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/03/2023] [Accepted: 11/09/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND AND AIM Chromoendoscopy with the use of indigo carmine (IC) dye is a crucial endoscopic technique to identify gastrointestinal neoplasms. However, its performance is limited by the endoscopist's skill, and no standards are available for lesion identification. Thus, we developed an artificial intelligence (AI) model to replace chromoendoscopy. METHODS This pilot study assessed the feasibility of our novel AI model in the conversion of white-light images (WLI) into virtual IC-dyed images based on a generative adversarial network. The predictions of our AI model were evaluated against the assessments of five endoscopic experts who were blinded to the purpose of this study with a staining quality rating from 1 (unacceptable) to 4 (excellent). RESULTS The AI model successfully transformed the WLI of polyps with different morphologies and different types of lesions in the gastrointestinal tract into virtual IC-dyed images. The quality ratings of the real IC-dyed and AI images did not significantly differ concerning surface structure (AI vs IC: 3.08 vs 3.00), lesion border (3.04 vs 2.98), and overall contrast (3.14 vs 3.02) from 10 sets of images (10 AI images and 10 real IC-dyed images). Although the score depended significantly on the evaluator, the staining methods (AI or real IC) and evaluators had no significant interaction (P > 0.05) with each other. CONCLUSION Our results demonstrated the feasibility of employing AI model's virtual IC staining, increasing the possibility of being employed in daily practice. This novel technology may facilitate gastrointestinal lesion identification in the future.
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Affiliation(s)
- Yang-Bor Lu
- Department of Digestive Disease, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
- Endoscopy Center, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
| | - Si-Cun Lu
- Departmemt of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
- The Third School of Clinical Medicine, Southern Medical University, Shenzhen, China
| | - Fu-Dong Li
- Department of Gastroenterology and Endoscopy Center, First Hospital of Jilin University, Jilin, China
| | - Puo-Hsien Le
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
| | - Kai-Hua Zhang
- School of Computer, Nanjing University of Information Science and Technology, Nanjing, China
| | - Zi-Zheng Sun
- School of Computer, Nanjing University of Information Science and Technology, Nanjing, China
| | - Yung-Ning Huang
- Department of Digestive Disease, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
- Endoscopy Center, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
| | - Yu-Chieh Weng
- Department of Digestive Disease, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
- Endoscopy Center, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
| | - Wei-Ting Chen
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
| | - Yi-Wei Fu
- Department of Gastroenterology, Affiliated Taizhou People's Hospital of Nanjing Medical University, Nanjing, China
| | - Jun-Bo Qian
- Department of Gastroenterology, The Second Hospital affiliated to Nantong University, Nantong, China
| | - Bin Hu
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Xu
- Department of Gastroenterology and Endoscopy Center, First Hospital of Jilin University, Jilin, China
| | - Cheng-Tang Chiu
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
| | - Qin-Wei Xu
- Endoscopy Center, Department of Gastroenterology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Wei Gong
- Departmemt of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
- The Third School of Clinical Medicine, Southern Medical University, Shenzhen, China
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Hsu WF, Chiu HM. Optimization of colonoscopy quality: Comprehensive review of the literature and future perspectives. Dig Endosc 2023; 35:822-834. [PMID: 37381701 DOI: 10.1111/den.14627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 06/27/2023] [Indexed: 06/30/2023]
Abstract
Colonoscopy is crucial in preventing colorectal cancer (CRC) and reducing associated mortality. This comprehensive review examines the importance of high-quality colonoscopy and associated quality indicators, including bowel preparation, cecal intubation rate, withdrawal time, adenoma detection rate (ADR), complete resection, specimen retrieval, complication rates, and patient satisfaction, while also discussing other ADR-related metrics. Additionally, the review draws attention to often overlooked quality aspects, such as nonpolypoid lesion detection, as well as insertion and withdrawal skills. Moreover, it explores the potential of artificial intelligence in enhancing colonoscopy quality and highlights specific considerations for organized screening programs. The review also emphasizes the implications of organized screening programs and the need for continuous quality improvement. A high-quality colonoscopy is crucial for preventing postcolonoscopy CRC- and CRC-related deaths. Health-care professionals must develop a thorough understanding of colonoscopy quality components, including technical quality, patient safety, and patient experience. By prioritizing ongoing evaluation and refinement of these quality indicators, health-care providers can contribute to improved patient outcomes and develop more effective CRC screening programs.
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Affiliation(s)
- Wen-Feng Hsu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Han-Mo Chiu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
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Mizukami K, Fushimi E, Sagami R, Abe T, Sato T, Terashi S, Fukuda M, Nishikiori H, Nagai T, Kodama M, Murakami K. Usefulness of AI-Equipped Endoscopy for Detecting Colorectal Adenoma during Colonoscopy Screening: Confirm That Colon Neoplasm Finely Can Be Identified by AI without Overlooking Study (Confidential Study). J Clin Med 2023; 12:6332. [PMID: 37834976 PMCID: PMC10573595 DOI: 10.3390/jcm12196332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/28/2023] [Accepted: 09/30/2023] [Indexed: 10/15/2023] Open
Abstract
In the present prospective case series study, we investigated the lesion-detection ability of an AI-equipped colonoscopy as an addition to colonoscopy (CS) screening. Participants were 100 patients aged ≥20 years who had not undergone CS at the study site in the last 3 years and passed the exclusion criteria. CS procedures were conducted using conventional white light imaging and computer-aided detection (CADe). Adenoma detection rate (ADR; number of individuals with at least one adenoma detected) was compared between the conventional group and the CADe group. Of the 170 lesions identified, the ADR of the CADe group was significantly higher than the ADR of the conventional group (69% vs. 61%, p = 0.008). For the expert endoscopists, although ADR did not differ significantly, the mean number of detected adenomas per procedure (MAP) was significantly higher in the CADe group than in the conventional group (1.7 vs. 1.45, p = 0.034). For non-expert endoscopists, ADR and MAP were significantly higher in the CADe group than in the conventional group (ADR 69.5% vs. 56.6%, p = 0.016; MAP 1.66 vs. 1.11, p < 0.001). These results indicate that the CADe function in CS screening has a positive effect on adenoma detection, especially for non-experts.
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Affiliation(s)
- Kazuhiro Mizukami
- Department of Gastroenterology, Faculty of Medicine, Oita University, 1-1, Idaigaoka, Hasama, Yufu, Oita 879-5593, Japan
| | - Erina Fushimi
- Department of Gastroenterology, Faculty of Medicine, Oita University, 1-1, Idaigaoka, Hasama, Yufu, Oita 879-5593, Japan
| | - Ryota Sagami
- Department of Gastroenterology, Oita San-ai Medical Center, 1213 Ichi, Oita 870-1151, Japan
| | - Takashi Abe
- Department of Gastroenterology, Oita Koseiren Tsurumi Hospital, 4333, Tsurumi, Beppu, Oita 874-8585, Japan
| | - Takao Sato
- Department of Gastroenterology, Oita San-ai Medical Center, 1213 Ichi, Oita 870-1151, Japan
| | - Shohei Terashi
- Department of Gastroenterology, Oita Koseiren Tsurumi Hospital, 4333, Tsurumi, Beppu, Oita 874-8585, Japan
| | - Masahide Fukuda
- Department of Gastroenterology, Faculty of Medicine, Oita University, 1-1, Idaigaoka, Hasama, Yufu, Oita 879-5593, Japan
| | - Hidefumi Nishikiori
- Department of Gastroenterology, Oita San-ai Medical Center, 1213 Ichi, Oita 870-1151, Japan
| | - Takayuki Nagai
- Department of Gastroenterology, Oita Koseiren Tsurumi Hospital, 4333, Tsurumi, Beppu, Oita 874-8585, Japan
| | - Masaaki Kodama
- Department of Advanced Medical Sciences, Faculty of Medicine, Oita University, 1-1, Idaigaoka, Hasama, Yufu, Oita 879-5593, Japan
| | - Kazunari Murakami
- Department of Gastroenterology, Faculty of Medicine, Oita University, 1-1, Idaigaoka, Hasama, Yufu, Oita 879-5593, Japan
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Li J, Chen K, Wei Y, Zhang D, Wang Y, Hou X, Wu R, Peng K, Li L, Huang C, Wang Y, Xun L, Liu F. Colorectal sessile serrated lesion detection using linked-color imaging versus narrow-band imaging: a parallel randomized controlled trial. Endoscopy 2023; 55:546-554. [PMID: 36482165 DOI: 10.1055/a-1995-2685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
BACKGROUND Previous studies have reported the effectiveness of narrow-band imaging (NBI) and linked-color imaging (LCI) in improving the detection of colorectal neoplasms. There has however been no direct comparison between LCI and NBI in the detection of colorectal sessile serrated lesions (SSLs). The present study aimed to compare the effectiveness of LCI and NBI in detecting colorectal SSLs. METHODS A prospective, parallel, randomized controlled trial was conducted. The participants were randomly assigned to the LCI or NBI arms. The primary end point was the SSL detection rate (SDR). RESULTS 406 patients were involved; 204 in the LCI arm and 202 in the NBI arm. The total polyp detection rate, adenoma detection rate, and SDR were 54.2 %, 38.7 %, and 10.8%, respectively. The SDR was not significantly different between the LCI and NBI arms (12.3 % vs. 9.4 %; P = 0.36). The differences in the detection rate and the per-patient number of polyps, adenomas, diminutive lesions, and flat lesions between LCI and NBI also were not statistically significant. Multivariate analysis showed that LCI and NBI were not independent factors associated with SDR, whereas Boston Bowel Preparation Scale score (odds ratio [OR] 1.35, 95 %CI 1.03-1.76; P = 0.03), withdrawal time (OR 1.13, 95 %CI 1.00-1.26; P = 0.04), and operator experience (OR 3.73, 95 %CI 1.67-8.32; P = 0.001) were independent factors associated with SDR. CONCLUSIONS LCI and NBI are comparable for SSL detection, as well as for the detection of polyps and adenomas.
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Affiliation(s)
- Jun Li
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Department of Gastroenterology, Shanghai Tenth People's Hospital Chongming Branch, Shanghai, China
| | - Kan Chen
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yunlei Wei
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Di Zhang
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuxin Wang
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaojia Hou
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ruijin Wu
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Kangsheng Peng
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lei Li
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chao Huang
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yilong Wang
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Linjuan Xun
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Feng Liu
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Department of Gastroenterology, Shanghai Tenth People's Hospital Chongming Branch, Shanghai, China
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9
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Li J, Zhang D, Wei Y, Chen K, Wu R, Peng K, Hou X, Li L, Huang C, Wang Y, Xun L, Xu H, Wang J, Chen Z, Shen M, Liu F. Colorectal Sessile Serrated Lesion Detection Using Linked Color Imaging: A Multicenter, Parallel Randomized Controlled Trial. Clin Gastroenterol Hepatol 2023; 21:328-336.e2. [PMID: 35390509 DOI: 10.1016/j.cgh.2022.03.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Linked color imaging (LCI) is a novel technology that improves the color differences between colorectal lesions and the surrounding mucosa. The present study aims to compare the detection of colorectal sessile serrated lesions (SSL) using LCI with white light imaging (WLI). METHOD A large-scale, multicenter, parallel prospective randomized controlled trial was conducted in 4 hospitals in China. The participants were randomly assigned to the LCI group and WLI group. The primary endpoint was the SSL detection rate (SDR). RESULTS A total of 884 patients were involved in the intention-to-treat analysis, with 441 patients in the LCI group and 443 patients in the WLI group. The total polyp detection rate, adenoma detection rate, and SDR were 51.8%, 35.7%, and 8.6%, respectively. The SDR was significantly higher in the LCI group than in the WLI group (11.3% vs 5.9%, P = .004). Furthermore, LCI significantly increased the number of polyps and adenomas detected per patient, when compared with WLI (P < .05). In addition, there was higher detection rate of diminutive and flat lesions in the LCI group (P < .05). Multivariate analysis revealed that LCI is an independent factor associated with SDR (hazard ratio, 1.990; 95% confidence interval, 1.203-3.293; P = .007), along with withdrawal time (hazard ratio, 1.157; 95% confidence interval, 1.060-1.263; P = .001) and operator experience (hazard ratio, 1.850; 95% confidence interval, 1.045-3.273; P = .035). CONCLUSIONS LCI is significantly superior to WLI for SSL detection, and may improve polyp and adenoma detection. LCI can be recommended as an appropriate method for routine inspection during colonoscopy (http://www.chictr.org.cn number, ChiCTR2000035705).
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Affiliation(s)
- Jun Li
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Di Zhang
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yunlei Wei
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Kan Chen
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ruijin Wu
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Kangsheng Peng
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaojia Hou
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lei Li
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chao Huang
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuxin Wang
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Linjuan Xun
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hongwei Xu
- Department of Gastroenterology, Kunshan Hospital of Traditional Chinese Medicine, Kunshan Affiliated Hospital of Yangzhou University, Kunshan, China
| | - Jianhua Wang
- Department of Gastroenterology, The First People's Hospital of Kunshan, Kunshan, China
| | - Zhirong Chen
- Department of Gastroenterology, Suzhou Municipal Hospital (Eastern), Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, China
| | - Ming Shen
- Department of Gastroenterology, Jiangyin Hospital of Traditional Chinese Medicine, Jiangyin Hospital Affiliated to Nanjing University of Chinese Medicine, Nanjing, China
| | - Feng Liu
- Digestive Endoscopy Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
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10
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Nachmani R, Nidal I, Robinson D, Yassin M, Abookasis D. Segmentation of polyps based on pyramid vision transformers and residual block for real-time endoscopy imaging. J Pathol Inform 2023; 14:100197. [PMID: 36844703 PMCID: PMC9945716 DOI: 10.1016/j.jpi.2023.100197] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/22/2023] [Accepted: 01/22/2023] [Indexed: 01/27/2023] Open
Abstract
Polyp segmentation is an important task in early identification of colon polyps for prevention of colorectal cancer. Numerous methods of machine learning have been utilized in an attempt to solve this task with varying levels of success. A successful polyp segmentation method which is both accurate and fast could make a huge impact on colonoscopy exams, aiding in real-time detection, as well as enabling faster and cheaper offline analysis. Thus, recent studies have worked to produce networks that are more accurate and faster than the previous generation of networks (e.g., NanoNet). Here, we propose ResPVT architecture for polyp segmentation. This platform uses transformers as a backbone and far surpasses all previous networks not only in accuracy but also with a much higher frame rate which may drastically reduce costs in both real time and offline analysis and enable the widespread application of this technology.
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Affiliation(s)
- Roi Nachmani
- Department of Electrical and Electronics Engineering, Ariel University, Ariel 407000, Israel
| | - Issa Nidal
- Department of Surgery, Hasharon Hospital, Rabin Medical Center, affiliated with Tel Aviv, University School of Medicine, Petah Tikva, Israel
| | - Dror Robinson
- Department of Orthopedics, Hasharon Hospital, Rabin Medical Center, affiliated with Tel Aviv, University School of Medicine, Petah Tikva, Israel
| | - Mustafa Yassin
- Department of Orthopedics, Hasharon Hospital, Rabin Medical Center, affiliated with Tel Aviv, University School of Medicine, Petah Tikva, Israel
| | - David Abookasis
- Department of Electrical and Electronics Engineering, Ariel University, Ariel 407000, Israel
- Ariel Photonics Center, Ariel University, Ariel 407000, Israel
- Corresponding author.
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11
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Hong J, Wang Y, Deng J, Qi M, Zuo W, Hao Y, Wang A, Tu Y, Xu S, Zhou X, Zhou X, Li G, Zhu L, Shu X, Zhu Y, Lv N, Chen Y. Potential Factors Predicting Histopathologically Upgrade Discrepancies between Endoscopic Forceps Biopsy of the Colorectal Low-Grade Intraepithelial Neoplasia and Endoscopic Resection Specimens. BIOMED RESEARCH INTERNATIONAL 2022; 2022:1915458. [PMID: 35707387 PMCID: PMC9192244 DOI: 10.1155/2022/1915458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 05/21/2022] [Indexed: 12/24/2022]
Abstract
Background It was gradually accepted that endoscopic fragment biopsy (EFB) diagnosis cannot accurately guarantee the absence of higher-grade neoplasms within the lesion of the digestive tract. There are no well-established predictors for histopathologically upgrade discrepancies between EFB diagnosing colorectal low-grade intraepithelial neoplasia (LGIN) and endoscopic resection (ER) specimens. Methods A total of 918 colorectal LGINs was histopathologically diagnosed by EFB, including 162 cases with upgrade discrepancy and 756 concordant cases. We compared clinicopathological data of EFB and ER specimens between these two groups. Multivariate analysis was performed to identify predictors for this upgrade histopathology. Results The predominant upgrade discrepancy of LGINs diagnosed by EFB was upgrades to high-grade dysplasia (114/918, 12.4%), followed by upgrades to intramucosal carcinoma (33/918, 3.6%), submucosal adenocarcinoma (10/918, 1.1%), and advanced adenocarcinoma (5/918, 0.5%). NSAID history (OR 4.83; 95% CI, 2.27-10.27; p < 0.001), insufficient EFB number (OR 2.99; 95% CI, 1.91-4.68; p < 0.001), maximum diameter ≥ 1.0 cm (OR 6.18; 95% CI, 1.32-28.99; p = 0.021), lobulated shape (OR 2.68; 95% CI, 1.65-4.36; p < 0.001), erythema (OR 2.42; 95% CI, 1.50-3.91; p < 0.001), erosion (OR 7.12; 95% CI, 3.91-12.94; p < 0.001), surface unevenness (OR 2.31; 95% CI, 1.33-4.01; p = 0.003), and distal location of the target adenoma (OR 3.29; 95% CI, 1.68-6.41; p < 0.001) were associated with the histologically upgrade discrepancies. Conclusion NSAID history, insufficient EFB number, adenoma size and location, and abnormal macroscopic patterns are potential predictors for upgrade histopathology of LGINs diagnosed by EFBs. The standardization of EFB number and advanced imaging techniques could minimize the risk of neglecting the potential of this upgrade histopathology.
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Affiliation(s)
- Junbo Hong
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Yining Wang
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jiangshan Deng
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Miao Qi
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Wei Zuo
- Department of Respiratory Medicine, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Yuanzheng Hao
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Anjiang Wang
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Yi Tu
- Department of Pathology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Shan Xu
- Department of Pathology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Xiaodong Zhou
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xiaojiang Zhou
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Guohua Li
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Liang Zhu
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xu Shu
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Yin Zhu
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Nonghua Lv
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Youxiang Chen
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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12
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Li W, Fan J, Li Y, Hao P, Lin Y, Fu T, Ai D, Song H, Yang J. Endoscopy image enhancement method by generalized imaging defect models based adversarial training. Phys Med Biol 2022; 67. [DOI: 10.1088/1361-6560/ac6724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 04/13/2022] [Indexed: 11/12/2022]
Abstract
Abstract
Objective. Smoke, uneven lighting, and color deviation are common issues in endoscopic surgery, which have increased the risk of surgery and even lead to failure. Approach. In this study, we present a new physics model driven semi-supervised learning framework for high-quality pixel-wise endoscopic image enhancement, which is generalizable for smoke removal, light adjustment, and color correction. To improve the authenticity of the generated images, and thereby improve the network performance, we integrated specific physical imaging defect models with the CycleGAN framework. No ground-truth data in pairs are required. In addition, we propose a transfer learning framework to address the data scarcity in several endoscope enhancement tasks and improve the network performance. Main results. Qualitative and quantitative studies reveal that the proposed network outperforms the state-of-the-art image enhancement methods. In particular, the proposed method performs much better than the original CycleGAN, for example, the structural similarity improved from 0.7925 to 0.8648, feature similarity for color images from 0.8917 to 0.9283, and quaternion structural similarity from 0.8097 to 0.8800 in the smoke removal task. Experimental results of the proposed transfer learning method also reveal its superior performance when trained with small datasets of target tasks. Significance. Experimental results on endoscopic images prove the effectiveness of the proposed network in smoke removal, light adjustment, and color correction, showing excellent clinical usefulness.
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13
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Colorectal Cancer Surveillance in Patients with Inflammatory Bowel Diseases: Chromoendoscopy or Non-Chromoendoscopy, That Is the Question. J Clin Med 2022; 11:jcm11030509. [PMID: 35159961 PMCID: PMC8836765 DOI: 10.3390/jcm11030509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 01/03/2022] [Accepted: 01/17/2022] [Indexed: 12/07/2022] Open
Abstract
Subjects affected by ulcerative colitis and Crohn’s disease with colonic localization have an increased risk of colorectal cancer (CRC). Surveillance colonoscopy is recommended by international guidelines as it can detect early-stage CRC. Based on previous evidence, in 2015 the Surveillance for Colorectal Endoscopic Neoplasia Detection and Management in Inflammatory Bowel Disease Patients International Consensus indicated dye chromoendoscopy (DCE) as the most effective technique for detecting dysplasia. However, advances in endoscopic technology such as high-definition colonoscopes and dye-less virtual chromoendoscopy (VCE) may change future practice. In this review, we summarize the available evidence on CRC surveillance in IBD, focusing on the emerging role of high-definition white light endoscopy (HD-WLE) and VCE over the standard DCE, and the current role of random biopsies.
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14
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Saito Y, Kodashima S, Matsuda T, Matsuda K, Fujishiro M, Tanaka K, Kobayashi K, Katada C, Horimatsu T, Muto M, Ohtsuka K, Oda I, Kato M, Kida M, Hoteya S, Yamamoto H, Ryozawa S, Iwakiri R, Kutsumi H, Kato M, Haruma K, Fujimoto K, Iishi H, Ogata H, Uemura N, Kaminishi M, Tajiri H, Inoue H. Current status of diagnostic and therapeutic colonoscopy in Japan: The Japan Endoscopic Database Project. Dig Endosc 2022; 34:144-152. [PMID: 33774877 DOI: 10.1111/den.13980] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 03/23/2021] [Indexed: 12/28/2022]
Abstract
OBJECTIVES The Japan Endoscopy Database Project was initiated to develop the world's largest endoscopy data repository. This study describes the first phase of the colonoscopy project in Japan. METHODS Data were aggregated offline by integrating information from the endoscopy database software from January 2015 through March 2017. The study population included all patients who underwent colonoscopy at eight centers. RESULTS A total of 31,395 patients who underwent 38,497 colonoscopy procedures were registered. The majority of procedures were performed for screening (n = 14,156), followed by fecal immunochemical test positivity (n = 3960), abdominal symptoms (n = 3864), post-colorectal surgery surveillance (n = 3431), post-endoscopic treatment surveillance (n = 3757), thorough pre-treatment examination (n = 2822), and therapeutic purposes (n = 6507). In the screening group, advanced cancers, early cancers, and adenomas were diagnosed endoscopically in 2.1%, 1.3%, and 28.7% of cases, respectively, while in the fecal immunochemical test-positive group, they were diagnosed in 2.5%, 1.9%, and 41.6% of cases, respectively. The incidence of complications was 0.177% and 0.152% in the screening and fecal immunochemical test-positive groups, respectively. The therapeutic procedures included 1446 cold forceps polypectomy procedures, 4770 cold snare polypectomy procedures, 368 hot biopsies, 2998 hot snare polypectomy procedures, 9775 endoscopic or piecemeal endoscopic mucosal resections, and 1660 endoscopic submucosal dissections. A total of 173 procedure-related complications (0.82%) occurred in 21,017 therapeutic procedures performed in 15,744 patients. CONCLUSIONS The first phase of the Japan Endoscopy Database Project established the proportions of the diagnostic and therapeutic colonoscopy procedures, and complication rates in real-world settings.
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Affiliation(s)
- Yutaka Saito
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan.,JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Shinya Kodashima
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Takahisa Matsuda
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Koji Matsuda
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan.,JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Mitsuhiro Fujishiro
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan.,JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Kiyohito Tanaka
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan.,JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Kiyonori Kobayashi
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Chikatoshi Katada
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Takahiro Horimatsu
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Manabu Muto
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Kazuo Ohtsuka
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Ichiro Oda
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Masayuki Kato
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Mitsuhiro Kida
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Shu Hoteya
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Hironori Yamamoto
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Shomei Ryozawa
- MSED-J (Minimal Standard Endoscopic Database) Creation Subcommittee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Ryuichi Iwakiri
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Hiromu Kutsumi
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Mototsugu Kato
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Ken Haruma
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Kazuma Fujimoto
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Hiroyasu Iishi
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Haruhiko Ogata
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Naomi Uemura
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Michio Kaminishi
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Hisao Tajiri
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
| | - Haruhiro Inoue
- JED (Japan Endoscopy Database) Project Committee, Japan Gastroenterological Endoscopy Society, Tokyo, Japan
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15
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Wang JZ, Zhang Y, Guo Q. Thoughts on factors related to colonoscopy quality. Shijie Huaren Xiaohua Zazhi 2021; 29:977-983. [DOI: 10.11569/wcjd.v29.i17.977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
With the increase in health consciousness and the prevalence of early gastrointestinal cancer screening, the number of diagnosed cases of colorectal polyps and adenomas in the Chinese general population has substantially increased. However, the overall adenoma detection rate (ADR) in China remains lower than the global standard of 30%. High quality colonoscopy is pivotal for increasing the ADR and reducing the risk of interval colon cancer. A few factors are related to the quality of colonoscopy, including preoperative evaluation of examinees, bowel preparation, techniques for intubation, use of image enhancement endoscopy, withdraw time, and prevention of adverse events.
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Affiliation(s)
- Jing-Zhai Wang
- Department of Gastroenterology, The First People's Hospital of Yunnan Province, Kunming 650032, Yunnan Province, China,Yunnan Provincial Clinical Medicine Center of GI Endoscopy, Kunming 650032, Yunnan Province, China
| | - Yu Zhang
- Department of Gastroenterology, The First People's Hospital of Yunnan Province, Kunming 650032, Yunnan Province, China,Yunnan Provincial Clinical Medicine Center of GI Endoscopy, Kunming 650032, Yunnan Province, China
| | - Qiang Guo
- Department of Gastroenterology, The First People's Hospital of Yunnan Province, Kunming 650032, Yunnan Province, China,Yunnan Provincial Clinical Medicine Center of GI Endoscopy, Kunming 650032, Yunnan Province, China
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16
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Jha D, Smedsrud PH, Johansen D, de Lange T, Johansen HD, Halvorsen P, Riegler MA. A Comprehensive Study on Colorectal Polyp Segmentation With ResUNet++, Conditional Random Field and Test-Time Augmentation. IEEE J Biomed Health Inform 2021; 25:2029-2040. [PMID: 33400658 DOI: 10.1109/jbhi.2021.3049304] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Colonoscopy is considered the gold standard for detection of colorectal cancer and its precursors. Existing examination methods are, however, hampered by high overall miss-rate, and many abnormalities are left undetected. Computer-Aided Diagnosis systems based on advanced machine learning algorithms are touted as a game-changer that can identify regions in the colon overlooked by the physicians during endoscopic examinations, and help detect and characterize lesions. In previous work, we have proposed the ResUNet++ architecture and demonstrated that it produces more efficient results compared with its counterparts U-Net and ResUNet. In this paper, we demonstrate that further improvements to the overall prediction performance of the ResUNet++ architecture can be achieved by using Conditional Random Field (CRF) and Test-Time Augmentation (TTA). We have performed extensive evaluations and validated the improvements using six publicly available datasets: Kvasir-SEG, CVC-ClinicDB, CVC-ColonDB, ETIS-Larib Polyp DB, ASU-Mayo Clinic Colonoscopy Video Database, and CVC-VideoClinicDB. Moreover, we compare our proposed architecture and resulting model with other state-of-the-art methods. To explore the generalization capability of ResUNet++ on different publicly available polyp datasets, so that it could be used in a real-world setting, we performed an extensive cross-dataset evaluation. The experimental results show that applying CRF and TTA improves the performance on various polyp segmentation datasets both on the same dataset and cross-dataset. To check the model's performance on difficult to detect polyps, we selected, with the help of an expert gastroenterologist, 196 sessile or flat polyps that are less than ten millimeters in size. This additional data has been made available as a subset of Kvasir-SEG. Our approaches showed good results for flat or sessile and smaller polyps, which are known to be one of the major reasons for high polyp miss-rates. This is one of the significant strengths of our work and indicates that our methods should be investigated further for use in clinical practice.
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17
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Matsuda T, Fujii T, Sano Y, Kudo SE, Oda Y, Hotta K, Shimoda T, Saito Y, Kobayashi N, Sekiguchi M, Konishi K, Ikematsu H, Iishi H, Takeuchi Y, Igarashi M, Kobayashi K, Sada M, Yamaguchi Y, Hasuda K, Shinohara T, Ishikawa H, Murakami Y, Taniguchi H, Fujimori T, Ajioka Y, Yoshida S. Randomised comparison of postpolypectomy surveillance intervals following a two-round baseline colonoscopy: the Japan Polyp Study Workgroup. Gut 2020; 70:gutjnl-2020-321996. [PMID: 33139269 PMCID: PMC8292600 DOI: 10.1136/gutjnl-2020-321996] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 09/13/2020] [Accepted: 09/20/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To assess whether follow-up colonoscopy after polypectomy at 3 years only, or at 1 and 3 years would effectively detect advanced neoplasia (AN), including nonpolypoid colorectal neoplasms (NP-CRNs). DESIGN A prospective multicentre randomised controlled trial was conducted in 11 Japanese institutions. The enrolled participants underwent a two-round baseline colonoscopy (interval: 1 year) to remove all neoplastic lesions. Subsequently, they were randomly assigned to undergo follow-up colonoscopy at 1 and 3 years (2-examination group) or at 3 years only (1-examination group). The incidence of AN, defined as lesions with low-grade dysplasia ≥10 mm, high-grade dysplasia or invasive cancer, at follow-up colonoscopy was evaluated. RESULTS A total of 3926 patients were enrolled in this study. The mean age was 57.3 (range: 40-69) years, and 2440 (62%) were male. Of these, 2166 patients were assigned to two groups (2-examination: 1087, 1-examination: 1079). Overall, we detected 29 AN in 28 patients at follow-up colonoscopy in both groups. On per-protocol analysis (701 in 2-examination vs 763 in 1-examination group), the incidence of AN was similar between the two groups (1.7% vs 2.1%, p=0.599). The results of the non-inferiority test were significant (p=0.017 in per-protocol, p=0.001 in intention-to-treat analysis). NP-CRNs composed of dominantly of the detected AN (62%, 18/29), and most of them were classified into laterally spreading tumour non-granular type (83%, 15/18). CONCLUSION After a two-round baseline colonoscopy, follow-up colonoscopy at 3 years detected AN, including NP-CRNs, as effectively as follow-up colonoscopies performed after 1 and 3 years.
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Affiliation(s)
- Takahisa Matsuda
- Cancer Screening Center, National Cancer Center Hospital, Tokyo, Japan
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | | | - Yasushi Sano
- Gastrointestinal Center and Institute of Minimally Invasive Endoscopic Care (iMEC), Sano Hospital, Kobe, Hyogo, Japan
| | - Shin-Ei Kudo
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - Yasushi Oda
- Oda GI Endoscopy and Gastroenterology Clinic, Kumamoto, Japan
| | - Kinichi Hotta
- Division of Endoscopy, Shizuoka Cancer Center, Sunto-gun, Shizuoka, Japan
| | - Tadakazu Shimoda
- Division of Pathology, Shizuoka Cancer Center, Sunto-gun, Shizuoka, Japan
| | - Yutaka Saito
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | - Nozomu Kobayashi
- Department of Gastroenterology, Tochigi Cancer Center, Utsunomiya, Tochigi, Japan
| | - Masau Sekiguchi
- Cancer Screening Center, National Cancer Center Hospital, Tokyo, Japan
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | - Kazuo Konishi
- Division of Gastroenterology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Hiroyasu Iishi
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Yoji Takeuchi
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Masahiro Igarashi
- Department of Gastroenterology, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Kiyonori Kobayashi
- Department of Gastroenterology, Kitasato University East Hospital, Sagamihara, Kanagawa, Japan
| | - Miwa Sada
- Department of Gastroenterology, Kitasato University East Hospital, Sagamihara, Kanagawa, Japan
| | - Yuichiro Yamaguchi
- Division of Endoscopy, Shizuoka Cancer Center, Sunto-gun, Shizuoka, Japan
| | - Kiwamu Hasuda
- Hattori GI Endoscopy and Gastroenterology Clinic, Kumamoto, Japan
| | - Tomoaki Shinohara
- Department of Gastroenterology, Saku Central Hospital Advanced Care Center, Saku, Nagano, Japan
| | - Hideki Ishikawa
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | - Hirokazu Taniguchi
- Pathology and Clinical Laboratory Division, JR Tokyo General Hospital, Tokyo, Japan
| | | | - Yoichi Ajioka
- Division of Molecular and Diagnostic Pathology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Chu Y, Zhang J, Wang P, Li T, Jiang S, Zhao Q, Liu F, Gao X, Qiao X, Wang X, Song Z, Liang H, Yue J, Linghu E. Will purposely seeking detect more colorectal polyps than routine performing during colonoscopy? Medicine (Baltimore) 2020; 99:e22738. [PMID: 33080734 PMCID: PMC7572006 DOI: 10.1097/md.0000000000022738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND & GOALS We observed that the number of colorectal polyps found intraoperatively was often higher than that encountered preoperatively during elective colonoscopic polypectomy. To evaluate whether more polyps can be detected when they are purposely sought than when they are routinely examined during colonoscopy. MATERIALS AND METHODS Patients undergoing colonoscopy were randomized into groups A and B. Before colonoscopy was performed, endoscopists were instructed to seek polyps for group A purposely but not for group B. Polypectomy was electively completed. In groups A and B, the cases of elective polypectomy were named groups AR and BR, including groups AR-1 and BR-1, during the first colonoscopy and groups AR-2 and BR-2 during the second colonoscopy for polypectomy, respectively. The following data were calculated: the number of polyps detected (NPD) and the polyp detection rate (PDR) in all cases and the number of polyps missed (NPM) and partial polyp miss rate (PPMR) in the cases of colorectal polyps. RESULTS A total of 419 cases were included in group A, 421 in group B, 43 in group AR, and 35 in group BR. No significant differences in PDR were found between groups A and B and in PPMR between groups AR-1 and BR-1 (P > .05), although PPMR in group AR-1 was higher than in group AR-2 (P < .05), similar results were found in PPMR between groups BR-1 and BR-2 (P < .05). CONCLUSION Purposely seeking for colorectal polyps did not result in more polyps detected compared with routine colonoscopy.
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Affiliation(s)
- Yanliu Chu
- Department of Hepatology and Gastroenterology, Chinese PLA General Hospital, Beijing
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Juan Zhang
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Ping Wang
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Tian Li
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Shuyi Jiang
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Qinfu Zhao
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Feng Liu
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Xiaozhong Gao
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Xiuli Qiao
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Xiaofeng Wang
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Zhenhe Song
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Heye Liang
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Jing Yue
- Department of Gastroenterology, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong Province, China
| | - Enqiang Linghu
- Department of Hepatology and Gastroenterology, Chinese PLA General Hospital, Beijing
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19
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Tseng CW, Leung FW, Hsieha YH. Impact of new techniques on adenoma detection rate based on meta-analysis data. Tzu Chi Med J 2020; 32:131-136. [PMID: 32269944 PMCID: PMC7137362 DOI: 10.4103/tcmj.tcmj_148_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/25/2019] [Accepted: 09/16/2019] [Indexed: 11/28/2022] Open
Abstract
The high incidence of colorectal cancer and the occurrence of interval cancers after screening colonoscopy support the need to develop methods to increase adenoma detection rate (ADR). This review focuses on the importance of ADR and the impact of new techniques on ADR based on meta-analysis data. The low-cost interventions (such as water-aided colonoscopy, second observation, and dynamic position change) were effective in increasing ADR. So were enhanced imaging techniques and add-on devices. Increase with higher cost interventions such as newer scopes is uncertain. Water exchange (WE) has the highest ADR compared with water immersion, air insufflation, and carbon dioxide insufflation. Second observation with forward or retroflexed views improved the right colon ADR. Add-on devices result in only modest improvement in ADR, of particular help in low performing endoscopists. The second-generation narrow-band imaging (NBI) provided a two-fold brighter image than the previous system. The improvement in ADR with NBI required the “best” quality bowel preparation. New endoscopic techniques incur various additional costs, nil for WE, small for tip attachments but large for the newer scopes. In conclusion, one or more of the above methods to improve ADR may be applicable in Taiwan. A comparison of these approaches to determine which is the most cost-effective is warranted.
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Affiliation(s)
- Chih-Wei Tseng
- Division of Gastroenterology, Department of Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Felix W Leung
- Department of Medicine, Sepulveda Ambulatory Care Center, Veterans Affairs Greater Los Angeles Healthcare System, North Hill, CA, USA.,David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Yu-Hsi Hsieha
- Division of Gastroenterology, Department of Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
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Facciorusso A, Triantafyllou K, Murad MH, Prokop LJ, Tziatzios G, Muscatiello N, Singh S. Compared Abilities of Endoscopic Techniques to Increase Colon Adenoma Detection Rates: A Network Meta-analysis. Clin Gastroenterol Hepatol 2019; 17:2439-2454.e25. [PMID: 30529731 DOI: 10.1016/j.cgh.2018.11.058] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/22/2018] [Accepted: 11/29/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Adenoma detection rate (ADR) is a quality metric for colorectal cancer screening. We performed a systematic review and network meta-analysis to assess the overall and comparative efficacies of different endoscopic techniques in adenoma detection. METHODS We performed a systematic review of published articles and abstracts, through March 15, 2018, to identify randomized controlled trials of adults undergoing colonoscopy that compared the efficacy of different devices in detection of adenomas. Our final analysis included 74 2-arm trials that comprised 44948 patients. These studies compared efficacies of add-on devices (cap, endocuff, endo-rings, G-EYE), enhanced imaging techniques (chromoendoscopy, narrow-band imaging, flexible spectral imaging color enhancement, blue laser imaging), new scopes (full-spectrum endoscopy, extra-wide-angle-view colonoscopy, dual focus), and low-cost optimizing existing resources (water-aided colonoscopy, second observer, dynamic position change), alone or in combination with high-definition colonoscopy or each other. Primary outcome was increase in ADR. We performed pairwise and network meta-analyses, and appraised quality of evidence using GRADE. RESULTS Low-cost optimizing existing resources (odds ratio [OR], 1.29; 95% CI,1.17-1.43), enhanced imaging techniques (OR,1.21; 95% CI, 1.09-1.35), and add-on devices (OR,1.18; 95% CI, 1.07-1.29) were associated with a moderate increase in ADR compared with high-definition colonoscopy; there was low to moderate confidence in estimates. Use of newer scopes was not associated with significant increases in ADR compared with high-definition colonoscopy (OR, 0.98; 95% CI, 0.79-1.21). In our comparative efficacy analysis, no specific technology for increasing ADR was superior to others. We did not find significant differences between technologies in detection of advanced ADR, polyp detection rate, or mean number of adenomas/patient. CONCLUSIONS In a network meta-analysis of published trials, we found that low-cost optimization of existing resources to be as effective as enhanced endoscopic imaging, or add-on devices, in increasing ADR during high-definition colonoscopy.
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Affiliation(s)
- Antonio Facciorusso
- Gastroenterology Unit, Department of Medical Sciences, University of Foggia, Foggia, Italy.
| | - Konstantinos Triantafyllou
- Hepatogastroenterology Unit, Second Department of Internal Medicine - Propaedeutic, Research Institute and Diabetes Center, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Mohammad Hassan Murad
- Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota
| | - Larry J Prokop
- Department of Library Services, Mayo Clinic, Rochester, Minnesota
| | - Georgios Tziatzios
- Hepatogastroenterology Unit, Second Department of Internal Medicine - Propaedeutic, Research Institute and Diabetes Center, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Nicola Muscatiello
- Gastroenterology Unit, Department of Medical Sciences, University of Foggia, Foggia, Italy
| | - Siddharth Singh
- Division of Gastroenterology and Biomedical Informatics, University of California San Diego, La Jolla, California; Division of Biomedical Informatics, University of California San Diego, La Jolla, California
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21
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Kanmura S, Hamamoto H, Tanaka A, Arima S, Sasaki F, Tanoue S, Nasu Y, Hashimoto S, Higashi M, Ido A. Diagnostic utility of linked color imaging in the evaluation of colonic mucosal inflammation in ulcerative colitis: a pilot study. Endosc Int Open 2019; 7:E937-E943. [PMID: 31367672 PMCID: PMC6656553 DOI: 10.1055/a-0810-0398] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 11/08/2018] [Indexed: 01/16/2023] Open
Abstract
Background and aims Recent studies recommend histological mucosal healing of intestinal tissue as a treatment goal in ulcerative colitis (UC). Linked-color imaging (LCI) is a new endoscopy system that enhances the color differences of the gastrointestinal mucosa. We investigated the efficacy of LCI in the evaluation of intestinal activity, including the histological activity in UC. Method A total of 21 UC patients who were evaluated by the LASEREO system (FUJIFILM Co., Tokyo, Japan) were enrolled from August to December in 2016. All of the target points were observed by conventional white-light imaging (WLI) and LCI and biopsied from the region of interest in each view. We quantified the color tones of 73 biopsied points on WLI and LCI using the L*a*b* color value (WLI-L, WLI-a, WLI-b, and LCI-L, LCI-a, LCI-b). We then investigated the relationships among the L*a*b* color values, endoscopic findings, and histological healing. Results The average LCI-a and LCI-b values of patients with high mucosal activity disease were significantly higher than in those with mucosal healing ( P < 0.01), and only LCI-a was significantly correlated with the score for histological healing. With regard to the other color values (LCI-L and all WLI values), there were no statistically significant differences in terms of average color value and correlation between patients with high mucosal activity and those with mucosal healing. In addition, the difference in the average color values with LCI and WLI was 7.1 and 3.1, respectively. Conclusion LCI is more useful than WLI for the visualization and evaluation of mucosal inflammation in UC.
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Affiliation(s)
- Shuji Kanmura
- Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Hitomi Hamamoto
- Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Akihito Tanaka
- Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Shiho Arima
- Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Fumisato Sasaki
- Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Shiroh Tanoue
- Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Yuichiro Nasu
- Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Shinichi Hashimoto
- Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Michiyo Higashi
- Department of Pathology, Field of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Akio Ido
- Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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22
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Zhou C, Ye H, Hu J, Shi X, Hua S, Yue J, Xu Z, Yang G. Automated Counting of Rice Panicle by Applying Deep Learning Model to Images from Unmanned Aerial Vehicle Platform. SENSORS 2019; 19:s19143106. [PMID: 31337086 PMCID: PMC6679257 DOI: 10.3390/s19143106] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/08/2019] [Accepted: 07/11/2019] [Indexed: 12/03/2022]
Abstract
The number of panicles per unit area is a common indicator of rice yield and is of great significance to yield estimation, breeding, and phenotype analysis. Traditional counting methods have various drawbacks, such as long delay times and high subjectivity, and they are easily perturbed by noise. To improve the accuracy of rice detection and counting in the field, we developed and implemented a panicle detection and counting system that is based on improved region-based fully convolutional networks, and we use the system to automate rice-phenotype measurements. The field experiments were conducted in target areas to train and test the system and used a rotor light unmanned aerial vehicle equipped with a high-definition RGB camera to collect images. The trained model achieved a precision of 0.868 on a held-out test set, which demonstrates the feasibility of this approach. The algorithm can deal with the irregular edge of the rice panicle, the significantly different appearance between the different varieties and growing periods, the interference due to color overlapping between panicle and leaves, and the variations in illumination intensity and shading effects in the field. The result is more accurate and efficient recognition of rice-panicles, which facilitates rice breeding. Overall, the approach of training deep learning models on increasingly large and publicly available image datasets presents a clear path toward smartphone-assisted crop disease diagnosis on a global scale.
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Affiliation(s)
- Chengquan Zhou
- Institute of Agricultural Equipment, Zhejiang Academy of Agricultural Sciences (ZAAS), Hangzhou 310000, China
| | - Hongbao Ye
- Institute of Agricultural Equipment, Zhejiang Academy of Agricultural Sciences (ZAAS), Hangzhou 310000, China
| | - Jun Hu
- Institute of Agricultural Equipment, Zhejiang Academy of Agricultural Sciences (ZAAS), Hangzhou 310000, China
| | - Xiaoyan Shi
- Institute of Agricultural Equipment, Zhejiang Academy of Agricultural Sciences (ZAAS), Hangzhou 310000, China
| | - Shan Hua
- Institute of Agricultural Equipment, Zhejiang Academy of Agricultural Sciences (ZAAS), Hangzhou 310000, China
| | - Jibo Yue
- Key Laboratory of Quantitative Remote Sensing in Agriculture of Ministry of Agriculture P. R. China, Beijing Research Center for Information Technology in Agriculture, Beijing 100089, China
- Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 100089, China
| | - Zhifu Xu
- Institute of Agricultural Equipment, Zhejiang Academy of Agricultural Sciences (ZAAS), Hangzhou 310000, China.
| | - Guijun Yang
- Key Laboratory of Quantitative Remote Sensing in Agriculture of Ministry of Agriculture P. R. China, Beijing Research Center for Information Technology in Agriculture, Beijing 100089, China.
- Key Laboratory of Agri-informatics, Ministry of Agriculture, Beijing 100089, China.
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23
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Li L, Ou Y, Yue H, Sun H, Chen P, Liu S, He F, Peng Q, Deng S. Comparison of the detection of colorectal lesions in different endoscopic modalities: A network meta-analysis and systematic review. Exp Ther Med 2019; 18:154-162. [PMID: 31258649 DOI: 10.3892/etm.2019.7535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 10/19/2018] [Indexed: 12/11/2022] Open
Abstract
A colonoscopy is considered to be the standard diagnostic test used to detect early colorectal lesions. Detection rates are expected to improve with optimised visualisation. A systematic review and network meta-analysis was conducted to evaluate detection efficiency in several colonoscopic modalities. Relevant articles were identified in searches of the PubMed, EMBASE and Cochrane Library databases. The modalities, comprising of standard-definition white light (SDWL), high-definition white light (HDWL), narrow-band imaging (NBI), autofluorescence imaging (AFI), PENTAX image enhanced technology (i-SCAN), Fuji Intelligent Color Enhancement (FICE), dye-based chromoendoscopy and novel image enhanced systems, including blue laser imaging (BLI) and linked color imaging (LCI), were compared to identify the most efficient modalities that could be used to detect colorectal lesions. Odds ratios (ORs) and mean differences (MDs) with 95% confidence intervals (CIs) were calculated. As a result, 40 studies fulfilled the inclusion criteria. Overall, in the network meta-analyses, NBI (OR, 1.29; 95% CI, 1.04-1.58), FICE (OR, 1.39; 95% CI, 1.11-1.77), chromoendoscopy (OR, 1.53; 95% CI, 1.22-1.93) and AFI (OR, 1.81; 95% CI, 1.07-2.87) were significantly better compared with SDWL at identifying adenoma in patients, and chromoendoscopy also proved significantly superior to HDWL (OR, 1.30; 95% CI, 1.06-1.60). In pairwise analyses, it was demonstrated that chromoendoscopy was significantly superior to HDWL at detecting the number of polyps (MD, -1.11; 95% CI, -1.46, -0.76) and flat lesions (MD, -0.30; 95% CI, -0.49, -0.10) per subject. Additionally, FICE detected a significantly greater number of subjects with polyps (OR, 0.78; 95% CI, 0.64-0.96) and NBI was significantly better at detecting the number of subjects with flat lesions (OR, 0.77; 95% CI, 0.60-0.99) compared with HDWL. Based on the meta-analysis, NBI, FICE and AFI were significantly better compared with SDWL at detecting patients with adenoma. Additionally, chromoendoscopy was significantly better than SDWL and HDWL at detecting the number of colorectal adenoma, however additional studies are needed to confirm these findings.
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Affiliation(s)
- Lifu Li
- Department of Gastroenterology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Yinghua Ou
- Department of Gastroenterology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Hui Yue
- Department of Gastroenterology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Hong Sun
- Department of Gastroenterology, Nanfang Hospital, Guangzhou, Guangdong 510000, P.R. China
| | - Peisheng Chen
- Department of Gastroenterology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Suying Liu
- Department of Gastroenterology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Fengjian He
- Department of Gastroenterology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Qianqian Peng
- Department of Gastroenterology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Sanhua Deng
- Department of Gastroenterology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
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Chiu PWY, Yip HC, Xia XF, Chan SM, Ng EKW, Lau JYW. How I do it: Flexible 3-D endoscope for endoscopic submucosal dissection. Dig Endosc 2019; 31:323-328. [PMID: 30550632 DOI: 10.1111/den.13315] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 12/07/2018] [Indexed: 12/16/2022]
Abstract
Endoscopic submucosal dissection (ESD) is technically challenging as a result of a lack of depth perception. The present article investigated the 3-D endoscope for carrying out ESD and translated the technique from bench to clinical use. In a preclinical porcine experiment, ESD using a 3-D endoscope was compared between an experienced and a novice endoscopist. All ESD were completed without perforation. Median operative time per surface area was significantly lower for the experienced endoscopist than for the novice (197.9 s/cm2 vs 434.7 s/cm2 ; P = 0.05). The second part was a prospective clinical experience to evaluate use of the 3-D endoscope for carrying out ESD. Ten patients received ESD using the 3-D endoscope. Four patients had gastric ESD, two had duodenal ESD and four had sigmoid and rectal ESD. There were no complications, whereas ESD failed in one patient who had gastric neoplasia at anastomosis. Mean operative time was 99.4 min, and operative time per surface area resection was 391 s/cm2 . The operating endoscopist did not complain of motion sickness, whereas the assistants had some dizziness upon prolonged ESD procedure. This study showed that carrying out ESD was safe and effective using a 3-D endoscope with an excellent 3-D view enhancing depth perception. Future study should be conducted to compare 3-D against 2-D endoscopes for ESD.
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Affiliation(s)
- Philip W Y Chiu
- Division of Upper GI and Metabolic Surgery, Department of Surgery, Institute of Digestive Disease, Chow Yuk Ho Technology Center for Innovative Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Hon Chi Yip
- Division of Upper GI and Metabolic Surgery, Department of Surgery, Institute of Digestive Disease, Chow Yuk Ho Technology Center for Innovative Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Xian Feng Xia
- Division of Upper GI and Metabolic Surgery, Department of Surgery, Institute of Digestive Disease, Chow Yuk Ho Technology Center for Innovative Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Shannon M Chan
- Division of Upper GI and Metabolic Surgery, Department of Surgery, Institute of Digestive Disease, Chow Yuk Ho Technology Center for Innovative Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Enders K W Ng
- Division of Upper GI and Metabolic Surgery, Department of Surgery, Institute of Digestive Disease, Chow Yuk Ho Technology Center for Innovative Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - James Y W Lau
- Division of Upper GI and Metabolic Surgery, Department of Surgery, Institute of Digestive Disease, Chow Yuk Ho Technology Center for Innovative Medicine, The Chinese University of Hong Kong, Hong Kong, China
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25
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Yoshida N, Inoue K, Yasuda R, Hirose R, Dohi O, Naito Y, Murakami T, Inada Y, Ogiso K, Morinaga Y, Kishimoto M, Rani RA, Itoh Y. An Additional 30-s Observation of the Right-Sided Colon with Narrow Band Imaging Decreases Missed Polyps: A Pilot Study. Dig Dis Sci 2018; 63:3457-3464. [PMID: 30232637 DOI: 10.1007/s10620-018-5275-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/04/2018] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Previous narrow-band imaging (NBI) was dark and reported not to be useful for polyp detection. In this study, we analyzed the efficacy of an additional 30-s observation of the right-sided colon with the recent bright high-resolution NBI. METHODS We enrolled patients undergoing colonoscopy from February 2015 to May 2017 in two institutions. All procedures were performed with the latest system (EVIS LUCERA ELITE, Olympus). The cecum and ascending colon were first observed with white light imaging (WLI) in both the NBI and WLI group. Then, the colonoscope was re-inserted, and the cecum and ascending colon were observed for an additional 30 s. In this second observation, NBI was performed for the first 130 patients in the NBI group and WLI for the next 130 in the WLI group. The number of adenoma and sessile serrated polyps (ASPs) in the second observation were examined in both groups. According to our initial pilot study, the sample size was estimated at 126. RESULTS In the first observation, the number of ASPs was 72 in the NBI group and 72 in the WLI group (p = 1.0). In the second observation, the number of ASPs was 23 in the NBI group and 10 in the WLI group (p = 0.02). The polyp and adenoma detection rates in the second observation were 16.2% and 12.3% in the NBI group and 7.7% (p = 0.03) and 6.2% (p = 0.09) in the WLI group. CONCLUSIONS The additional 30-s observation with recent NBI decreased missed polyps in the right-sided colon.
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Affiliation(s)
- Naohisa Yoshida
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan.
| | - Ken Inoue
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Ritsu Yasuda
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Ryohei Hirose
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Osamu Dohi
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Yuji Naito
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Takaaki Murakami
- Department of Gastroenterology, JCHO Kyoto Kuramaguchi Medical Center, Kyoto, Japan
| | - Yutaka Inada
- Department of Gastroenterology, Fukuchiyama City Hospital, Kyoto, Japan
| | - Kiyoshi Ogiso
- Department of Gastroenterology, Osaka General Hospital of West Japan Railway Company, Osaka, Japan
| | - Yukiko Morinaga
- Department of Surgical Pathology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Mitsuo Kishimoto
- Department of Surgical Pathology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Rafiz Abdul Rani
- Gastroenterology Unit, Faculty of Medicine, Universiti Teknologi MARA, Selangor, Malaysia
| | - Yoshito Itoh
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
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Pinsky PF, Loberg M, Senore C, Wooldrage K, Atkin W, Bretthauer M, Cross AJ, Hoff G, Holme O, Kalager M, Segnan N, Schoen RE. Number of Adenomas Removed and Colorectal Cancers Prevented in Randomized Trials of Flexible Sigmoidoscopy Screening. Gastroenterology 2018; 155:1059-1068.e2. [PMID: 29935150 DOI: 10.1053/j.gastro.2018.06.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 05/29/2018] [Accepted: 06/14/2018] [Indexed: 12/23/2022]
Abstract
BACKGROUND & AIMS Screening for colorectal cancer (CRC) with sigmoidoscopy reduces CRC incidence by detecting and removing adenomas. The number needed to screen is a measure of screening efficiency, but is not directly associated with adenoma removal. We propose the following 2 new metrics for quantifying the relationship between adenoma removal and CRC prevented: number of adenomas needed to remove (NNR) and adenoma dwell time avoided (DTA). METHODS We collected data from 4 randomized trials of sigmoidoscopy screening (1 in the United States and 3 in Europe) to assess NNR and DTA. For each trial, NNR was computed as the number of adenomas removed from subjects in the intervention group, divided by the number of CRCs prevented. DTA was computed similarly but taking into account the timing of adenoma removal. Combined results across trials were assessed using standard meta-analytic techniques. RESULTS The estimated NNR for the PLCO (Prostate, Lung, Colorectal and Ovarian) trial was 74 (95% confidence interval [CI], 56-110), for the NORCCAP (Norwegian Colorectal Cancer Prevention) trial was 71 (95% CI, 44-174), for the SCORE (Screening for Colon Rectum) trial was 27 (95% CI, 14-135), and for the UKFSST (UK Flexible Sigmoidoscopy Screening Trial) was 36 (95% CI, 28-52). The combined estimate (meta-analysis) of NNR was 52 (95% CI, 36-93) assuming heterogeneity (P for heterogeneity = .014). DTA estimates among trials ranged from 278 to 730 years, with a combined estimate of 500 (95% CI, 344-833) years assuming heterogeneity (P for heterogeneity = .035), or 2 CRC cases prevented per 1000 adenoma dwell years avoided. The combined estimates of NNR and DTA restricted to advanced adenomas were 13 (95% CI, 9-22) and 122 (95% CI, 90-190) years, respectively. CONCLUSIONS We collected data from 4 randomized trials of sigmoidoscopy screening for CRC to develop metrics of endoscopic efficiency, NNR and DTA, which are directly linked to adenoma detection and removal. They can be used to compare screening among endoscopic modalities and to more precisely measure adenoma to carcinoma transition rates.
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Affiliation(s)
- Paul F Pinsky
- Division of Cancer Prevention, National Cancer Institute, Bethesda, Maryland.
| | | | | | | | | | - Michael Bretthauer
- University of Oslo, Oslo, Norway; Frontier Science Foundation, Boston, Massachusetts
| | | | | | - Oyvind Holme
- University of Oslo, Oslo, Norway; Sorlandet Hospital, Kristiansand, Norway
| | | | | | - Robert E Schoen
- Department of Medicine and Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania
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27
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Castaneda D, Popov VB, Verheyen E, Wander P, Gross SA. New technologies improve adenoma detection rate, adenoma miss rate, and polyp detection rate: a systematic review and meta-analysis. Gastrointest Endosc 2018; 88:209-222.e11. [PMID: 29614263 DOI: 10.1016/j.gie.2018.03.022] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 03/25/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS The need to increase the adenoma detection rate (ADR) for colorectal cancer screening has ushered in devices that mechanically or optically improve conventional colonoscopy. Recently, new technology devices (NTDs) have become available. We aimed to compare the ADR, polyp detection rate (PDR), and adenoma miss rate (AMR) between NTDs and conventional colonoscopy and between mechanical and optical NTDs. METHODS MEDLINE and Embase databases were searched from inception through September 2017 for articles or abstracts reporting ADR, PDR, and AMR with NTDs. Randomized controlled trials and case-control studies with >10 subjects were included. Primary outcomes included ADR, PDR, and AMR odds ratio (OR) between conventional colonoscopy and NTDs. Secondary outcomes included cecal intubation rates, adverse events, cecal intubation time, and total colonoscopy time. RESULTS From 141 citations, 45 studies with 20,887 subjects were eligible for ≥1 analyses. Overall, the ORs for ADR (1.35; 95% confidence interval [CI] 1.24-1.47; P < .01) and PDR (1.51; 95% CI, 1.37-1.67; P < .01) were higher with NTDs. Higher ADR (OR, 1.52 vs 1.25; P = .035) and PDR (OR, 1.63 vs 1.10; P ≤ .01) were observed with mechanical NTDs. The overall AMR with NTDs was lower compared with conventional colonoscopy (OR, .19; 95% CI, .14-.26; P < .01). Mechanical NTDs had lower AMRs compared with optical NTDs (OR, .10 vs .33; P < .01). No differences in cecal intubation rates, cecal intubation time, or total colonoscopy time were found. CONCLUSIONS Newer endoscopic technologies are an effective option to improve ADR and PDR and decrease AMR, particularly with mechanical NTDs. No differences in operability and safety were found.
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Affiliation(s)
- Daniel Castaneda
- Department of Medicine, Mount Sinai St. Luke's-West Hospitals, Icahn School of Medicine, New York, New York, USA
| | - Violeta B Popov
- Division of Gastroenterology, New York VA Harbor Healthcare, NYU School of Medicine, New York, New York, USA
| | - Elijah Verheyen
- Department of Medicine, Mount Sinai St. Luke's-West Hospitals, Icahn School of Medicine, New York, New York, USA
| | - Praneet Wander
- Department of Gastroenterology, Northshore Long Island Jewish Hospital, New York, New York, USA
| | - Seth A Gross
- Clinical Care and Quality, Division of Gastroenterology, NYU Langone Health, NYU School of Medicine, New York, New York, USA
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28
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Lubner MG, Menias CO, Johnson RJ, Gaballah AH, Shaaban A, Elsayes KM. Villous Gastrointestinal Tumors: Multimodality Imaging with Histopathologic Correlation. Radiographics 2018; 38:1370-1384. [PMID: 30059275 DOI: 10.1148/rg.2018170159] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Villous lesions are advanced adenomas that manifest most commonly in the colon; however, they can develop throughout the gastrointestinal tract. The duodenum is the most common small-bowel site of these lesions. Although in most cases these are isolated lesions that occur sporadically, patients with certain specific colorectal cancer syndromes, including familial adenomatous polyposis and hereditary nonpolyposis colorectal cancer, may develop multiple advanced adenomas. Villous lesions are important because although they are histologically benign, they may harbor dysplasia and have potential for malignancy. These characteristics make them a primary target for colorectal cancer screening with optical and virtual colonoscopy. However, these lesions can also be symptomatic and detected at diagnostic imaging when patients present for examination. They have characteristic features at a variety of imaging examinations, including barium fluoroscopy, CT, MRI, and endoscopic US. It is important for radiologists to be aware of these lesions, their potential morphologies, and their typical appearances at multimodality imaging. Although villous tumors can be detected at imaging and confirmed with biopsy, owing to limitations in identifying dysplasia and foci of malignancy with the above modalities alone and the potential for malignancy, referral for surgical resection of these lesions ultimately is required. ©RSNA, 2018.
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Affiliation(s)
- Meghan G Lubner
- From the Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Sciences Center, 600 Highland Ave, Madison, WI 53792 (M.G.L.); Department of Radiology, Mayo Clinic Arizona, Phoenix, Ariz (C.O.M.); Department of Diagnostic and Interventional Imaging, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Tex (R.J.J.); Department of Radiology, University of Missouri Healthcare, Columbia, Mo (A.H.G.); Department of Radiology, Health Sciences Center, University of Utah, Salt Lake City, Utah (A.S.); and Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, Tex (K.M.E.)
| | - Christine O Menias
- From the Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Sciences Center, 600 Highland Ave, Madison, WI 53792 (M.G.L.); Department of Radiology, Mayo Clinic Arizona, Phoenix, Ariz (C.O.M.); Department of Diagnostic and Interventional Imaging, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Tex (R.J.J.); Department of Radiology, University of Missouri Healthcare, Columbia, Mo (A.H.G.); Department of Radiology, Health Sciences Center, University of Utah, Salt Lake City, Utah (A.S.); and Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, Tex (K.M.E.)
| | - Rashad J Johnson
- From the Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Sciences Center, 600 Highland Ave, Madison, WI 53792 (M.G.L.); Department of Radiology, Mayo Clinic Arizona, Phoenix, Ariz (C.O.M.); Department of Diagnostic and Interventional Imaging, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Tex (R.J.J.); Department of Radiology, University of Missouri Healthcare, Columbia, Mo (A.H.G.); Department of Radiology, Health Sciences Center, University of Utah, Salt Lake City, Utah (A.S.); and Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, Tex (K.M.E.)
| | - Ayman H Gaballah
- From the Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Sciences Center, 600 Highland Ave, Madison, WI 53792 (M.G.L.); Department of Radiology, Mayo Clinic Arizona, Phoenix, Ariz (C.O.M.); Department of Diagnostic and Interventional Imaging, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Tex (R.J.J.); Department of Radiology, University of Missouri Healthcare, Columbia, Mo (A.H.G.); Department of Radiology, Health Sciences Center, University of Utah, Salt Lake City, Utah (A.S.); and Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, Tex (K.M.E.)
| | - Akram Shaaban
- From the Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Sciences Center, 600 Highland Ave, Madison, WI 53792 (M.G.L.); Department of Radiology, Mayo Clinic Arizona, Phoenix, Ariz (C.O.M.); Department of Diagnostic and Interventional Imaging, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Tex (R.J.J.); Department of Radiology, University of Missouri Healthcare, Columbia, Mo (A.H.G.); Department of Radiology, Health Sciences Center, University of Utah, Salt Lake City, Utah (A.S.); and Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, Tex (K.M.E.)
| | - Khaled M Elsayes
- From the Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Sciences Center, 600 Highland Ave, Madison, WI 53792 (M.G.L.); Department of Radiology, Mayo Clinic Arizona, Phoenix, Ariz (C.O.M.); Department of Diagnostic and Interventional Imaging, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Tex (R.J.J.); Department of Radiology, University of Missouri Healthcare, Columbia, Mo (A.H.G.); Department of Radiology, Health Sciences Center, University of Utah, Salt Lake City, Utah (A.S.); and Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, Tex (K.M.E.)
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Dual-modality endoscopic probe for tissue surface shape reconstruction and hyperspectral imaging enabled by deep neural networks. Med Image Anal 2018; 48:162-176. [PMID: 29933116 DOI: 10.1016/j.media.2018.06.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 05/09/2018] [Accepted: 06/07/2018] [Indexed: 02/01/2023]
Abstract
Surgical guidance and decision making could be improved with accurate and real-time measurement of intra-operative data including shape and spectral information of the tissue surface. In this work, a dual-modality endoscopic system has been proposed to enable tissue surface shape reconstruction and hyperspectral imaging (HSI). This system centers around a probe comprised of an incoherent fiber bundle, whose fiber arrangement is different at the two ends, and miniature imaging optics. For 3D reconstruction with structured light (SL), a light pattern formed of randomly distributed spots with different colors is projected onto the tissue surface, creating artificial texture. Pattern decoding with a Convolutional Neural Network (CNN) model and a customized feature descriptor enables real-time 3D surface reconstruction at approximately 12 frames per second (FPS). In HSI mode, spatially sparse hyperspectral signals from the tissue surface can be captured with a slit hyperspectral imager in a single snapshot. A CNN based super-resolution model, namely "super-spectral-resolution" network (SSRNet), has also been developed to estimate pixel-level dense hypercubes from the endoscope cameras standard RGB images and the sparse hyperspectral signals, at approximately 2 FPS. The probe, with a 2.1 mm diameter, enables the system to be used with endoscope working channels. Furthermore, since data acquisition in both modes can be accomplished in one snapshot, operation of this system in clinical applications is minimally affected by tissue surface movement and deformation. The whole apparatus has been validated on phantoms and tissue (ex vivo and in vivo), while initial measurements on patients during laryngeal surgery show its potential in real-world clinical applications.
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Oka S, Tanaka S, Sano Y, Saitoh Y, Shimoda R, Tajiri H. Advanced diagnostic endoscopy in the lower gastrointestinal tract: A review of JGES core sessions. Dig Endosc 2018; 30:192-197. [PMID: 29055071 DOI: 10.1111/den.12977] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 10/16/2017] [Indexed: 12/20/2022]
Abstract
At each of the 89th to the 92nd congresses of the Japan Gastroenterological Endoscopy Society, a series of featured discussion sessions concerning advanced diagnostic endoscopy in the lower gastrointestinal tract were presented. In total, 45 lectures were presented in this subject area. It was shown that, in recent years, several convenient and less invasive colonoscopic modalities have been developed. This review article summarizes these core sessions and the efficacy of the techniques discussed.
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Affiliation(s)
- Shiro Oka
- Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan
| | - Shinji Tanaka
- Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan
| | - Yasushi Sano
- Gastrointestinal Center & Institute of Minimally-invasive Endoscopic Care (iMEC), Sano Hospital, Hyogo, Japan
| | - Yusuke Saitoh
- Digestive Disease Center, Asahikawa City Hospital, Asahikawa, Japan
| | - Ryo Shimoda
- Department of Internal Medicine and Gastrointestinal Endoscopy, Saga Medical School, Saga, Japan
| | - Hisao Tajiri
- Department of Innovative Interventional Endoscopy Research, The Jikei University School of Medicine, Tokyo, Japan
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