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Narrow band imaging

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https://www.readbyqxmd.com/read/28806820/didactic-training-vs-computer-based-self-learning-in-the-prediction-of-diminutive-colon-polyp-histology-by-trainees-a-randomized-controlled-study
#1
Taimur Khan, Birtukan Cinnor, Neil Gupta, Lindsay Hosford, Ajay Bansal, Mojtaba S Olyaee, Sachin Wani, Amit Rastogi
Background and study aim Experts can accurately predict diminutive polyp histology, but the ideal method to train nonexperts is not known. The aim of the study was to compare accuracy in diminutive polyp histology characterization using narrow-band imaging (NBI) between participants undergoing classroom didactic training vs. computer-based self-learning. Participants and methods Trainees at two institutions were randomized to classroom didactic training or computer-based self-learning. In didactic training, experienced endoscopists reviewed a presentation on NBI patterns for adenomatous and hyperplastic polyps and 40 NBI videos, along with interactive discussion...
August 14, 2017: Endoscopy
https://www.readbyqxmd.com/read/28798920/new-device-to-implement-the-adenoma-detection-rate
#2
REVIEW
Maddalena Zippi, Wandong Hong, Pietro Crispino, Giampiero Traversa
It is well-known that colonoscopy is considered the gold standard for colon cancer prevention. Although performed by experienced endoscopists, the matter remains of polyps missed during this examination. The reasons may include the size, shape and location of the lesions. Many colorectal cancer screening programs have been proposed to increase the adenoma detection rate. The substantial difference between these methods is whether the improvement in vision, particularly the detection of irregularities of the mucosa, is inside the endoscope electronic components (magnification, wide-angle vision, narrow band imaging, flexible spectral imaging colour enhancement, i-Scan) or outside the same, by the use of specific caps (EndoCuff, EndoVision, EndoRings)...
July 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/28795318/a-unified-methodology-based-on-sparse-field-level-sets-and-boosting-algorithms-for-false-positives-reduction-in-lung-nodules-detection
#3
Soudeh Saien, Hamid Abrishami Moghaddam, Mohsen Fathian
PURPOSE: This work aims to develop a unified methodology for the false positives reduction in lung nodules computer-aided detection schemes. METHODS: The 3D region of each detected nodule candidate is first reconstructed using the sparse field method for accurately segmenting the objects. This technique enhances the level set modeling by restricting the computations to a narrow band near the evolving curve. Then, a set of 2D and 3D relevant features are extracted for each segmented candidate...
August 9, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28793005/the-diagnostic-value-of-narrow-band-imaging-for-early-and-invasive-lung-cancer-a-meta-analysis
#4
Juanjuan Zhu, Wei Li, Jihong Zhou, Yuqing Chen, Chenling Zhao, Ting Zhang, Wenjia Peng, Xiaojing Wang
This study aimed to compare the ability of narrow-band imaging to detect early and invasive lung cancer with that of conventional pathological analysis and white-light bronchoscopy. We searched the PubMed, EMBASE, Sinomed, and China National Knowledge Infrastructure databases for relevant studies. Meta-disc software was used to perform data analysis, meta-regression analysis, sensitivity analysis, and heterogeneity testing, and STATA software was used to determine if publication bias was present, as well as to calculate the relative risks for the sensitivity and specificity of narrow-band imaging vs those of white-light bronchoscopy for the detection of early and invasive lung cancer...
July 2017: Clinics
https://www.readbyqxmd.com/read/28782001/effectiveness-of-computer-aided-diagnosis-of-colorectal-lesions-using-novel-software-for-magnifying-narrow-band-imaging-a-pilot-study
#5
Naoto Tamai, Yutaka Saito, Taku Sakamoto, Takeshi Nakajima, Takahisa Matsuda, Kazuki Sumiyama, Hisao Tajiri, Ryosuke Koyama, Shoji Kido
BACKGROUND AND STUDY AIMS:  Magnifying narrow-band imaging (M-NBI) enables detailed observation of microvascular architecture and can be used in endoscopic diagnosis of colorectal lesion. However, in clinical practice, differential diagnosis and estimation of invasion depth of colorectal lesions based on M-NBI findings require experience. Therefore, developing computer-aided diagnosis (CAD) for M-NBI would be beneficial for clinical practice. The aim of this study was to evaluate the effectiveness of software for CAD of colorectal lesions...
August 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28772762/structural-and-optical-properties-of-ag-nanoparticles-synthesized-by-thermal-treatment-method
#6
Leila Gharibshahi, Elias Saion, Elham Gharibshahi, Abdul Halim Shaari, Khamirul Amin Matori
The modified thermal treatment method via alternate oxygen and nitrogen flow was successfully employed to synthesize very narrow and pure Ag nanoparticles. The structural and optical properties of the obtained metal nanoparticles at different calcination temperatures between 400 and 800 °C were studied using various techniques. The FTIR and EDX confirmed the formation of Ag nanoparticles without a trace of impurities. The XRD spectra revealed that the amorphous sample at 30 °C had transformed into the cubic crystalline nanostructures at the calcination temperature of 400 °C and higher...
April 12, 2017: Materials
https://www.readbyqxmd.com/read/28769997/genomic-bayesian-functional-regression-models-with-interactions-for-predicting-wheat-grain-yield-using-hyper-spectral-image-data
#7
Abelardo Montesinos-López, Osval A Montesinos-López, Jaime Cuevas, Walter A Mata-López, Juan Burgueño, Sushismita Mondal, Julio Huerta, Ravi Singh, Enrique Autrique, Lorena González-Pérez, José Crossa
BACKGROUND: Modern agriculture uses hyperspectral cameras that provide hundreds of reflectance data at discrete narrow bands in many environments. These bands often cover the whole visible light spectrum and part of the infrared and ultraviolet light spectra. With the bands, vegetation indices are constructed for predicting agronomically important traits such as grain yield and biomass. However, since vegetation indices only use some wavelengths (referred to as bands), we propose using all bands simultaneously as predictor variables for the primary trait grain yield; results of several multi-environment maize (Aguate et al...
2017: Plant Methods
https://www.readbyqxmd.com/read/28758200/endoscopic-screening-for-synchronous-esophageal-neoplasia-among-patients-with-incident-head-and-neck-cancer-prevalence-risk-factors-and-outcomes
#8
Yao-Kuang Wang, Yun-Shiuan Chuang, Tzung-Shiun Wu, Ka-Wo Lee, Che-Wei Wu, Hsiang-Chen Wang, Chie-Tong Kuo, Chien-Hung Lee, Wen-Rei Kuo, Chung-Ho Chen, Deng-Chyang Wu, I-Chen Wu
Esophageal squamous-cell neoplasia (ESCN) is a common second primary neoplasia found in patients with head-and-neck squamous-cell carcinoma (HNSCC). This study sought to identify the risk factors for synchronous ESCN and how they influence survival in HNSCC patient. 815 incident HNSCC patients were prospectively recruited for endoscopy screening for ESCN using white-light imaging, narrow-band imaging, Lugol chromoendoscopy, and pathological confirmation. Associated lifestyle and clinicopathological data were collected...
July 30, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28750446/-modern-endoscopic-imaging-tools-for-urothelial-carcinoma-of-the-urinary-bladder
#9
M C Kriegmair, M Ritter, M S Michel, C Bolenz
Cystoscopy is the gold standard for the initial diagnosis of urothelial carcinoma in the urinary bladder (UCB). White light exhibits significant limitations in its ability to detect flat lesions or carcinoma in situ. Photodynamic Diagnosis (PDD) and Narrow Band Imaging (NBI) are established techniques which may improve the detection rates of UCB and reduce the risk of recurrence. Multiple novel tools have been developed in order to improve the diagnostic accuracy of endoscopic procedures, including Digital Contrast Enhancement Technology, Confocal Laser Endomicroscopy (CLE) and Optical Coherence Tomography (OCT)...
August 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28744763/a-case-of-colonic-stenosis-caused-by-cold-snare-polypectomy-for-the-removal-of-a-colonic-polyp
#10
Naotaka Ogasawara, Masaaki Takayama, Satoshi Ono, Shunsuke Katoh, Hirohiko Komai, Yasutaka Hijikata, Masahide Ebi, Yasushi Funaki, Makoto Sasaki, Kunio Kasugai
A 78-year-old woman with hypertension had a positive fecal immunochemical test and underwent colonoscopy, which revealed a 4 mm sessile polyp (Paris type; 0-Is) in the transverse colon. Based on low magnification colonoscopy with narrow band imaging, the polyp was Type 2 according to the NBI International Colorectal Endoscopic classification, diagnosed as an adenoma, and then resected via cold snare polypectomy (CSP). Five days after CSP, she complained of right-sided abdominal pain. Abdominal CT showed focal wall thickening of the transverse colon and focal infiltration of tissues surrounding the transverse colon...
July 25, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28732392/systematic-assessment-with-i-scan-magnification-endoscopy-and-acetic-acid-improves-dysplasia-detection-in-patients-with-barrett-s-esophagus
#11
Gideon Lipman, Raf Bisschops, Vinay Sehgal, Jacobo Ortiz-Fernández-Sordo, Rami Sweis, Jose M Esteban, Rifat Hamoudi, Matthew R Banks, Krish Ragunath, Laurence B Lovat, Rehan J Haidry
Background and study aims Enhanced endoscopic imaging with chromoendoscopy may improve dysplasia recognition in patients undergoing assessment of Barrett's esophagus (BE). This may reduce the need for random biopsies to detect more dysplasia. The aim of this study was to assess the effect of magnification endoscopy with I-SCAN (Pentax, Tokyo, Japan) and acetic acid (ACA) on dysplasia detection in BE using a novel mucosal and vascular classification system. Methods BE segments and suspicious lesions were recorded with high definition white-light and magnification endoscopy enhanced using all I-SCAN modes in combination...
July 21, 2017: Endoscopy
https://www.readbyqxmd.com/read/28731617/in-vivo-diagnosis-of-early-stage-gastric-cancer-found-after-helicobacter-pylori-eradication-using-probe-based-confocal-laser-endomicroscopy
#12
Noriyuki Horiguchi, Tomomitsu Tahara, T Hyuga Yamada, Dai Yoshida, Masaaki Okubo, Mitsuo Nagasaka, Yoshihito Nakagawa, Tomoyuki Shibata, Tetsuya Tsukamoto, Makoto Kuroda, Naoki Ohmiya
BACKGROUND AND AIM: Early-stage gastric cancer (EGC) found after Helicobacter pylori (Hp) eradication often displays non-tumorous regenerative epithelium and/or maturated tumorous epithelium overlying the cancerous tissue, which may confuse endoscopic and histologic diagnosis. Probe-based confocal laser endomicroscopy (pCLE) enables in vivo real-time optical biopsy. We compared the diagnostic yields for these EGC cases using conventional white light endoscopy (WL), magnifying endoscopy with narrow-band imaging (ME-NBI), pCLE, and endoscopic biopsy; we also compared the accuracy of the horizontal extent diagnosis between ME-NBI and pCLE...
July 21, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28728249/-application-of-narrow-band-imaging-endoscopy-in-identifying-of-extent-disease-after-chemotherapy-for-laryngeal-carcinoma
#13
J Hou, X Y Ren, K Zhu, X Y Du, N Li, M J Yang
No abstract text is available yet for this article.
July 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28728184/multi-spectral-imaging-of-circumscribed-choroidal-hemangioma-introduction
#14
Nicola Y Gan, Cheryl Zimmer, Wai-Ching Lam
BACKGROUND AND OBJECTIVE: To illustrate the features of a circumscribed choroidal hemangioma (CCH) using Annidis RHA multi-spectral imaging (MSI) technology (Annidis Corporation, Ottawa, Canada). This novel imaging technique uses non-overlapping, narrow-band LED light sources ranging from 520 nm to 940 nm to create a monochromatic series of en face fundus images and oxy/deoxyhemoglobin contrasted maps of the retina and choroid. PATIENTS AND METHODS: Annidis RHA MSI images were taken of a 67-year-old Chinese male with CCH...
July 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28725959/linked-color-imaging-improves-the-visibility-of-various-featured-colorectal-polyps-in-an-endoscopist-s-visibility-and-color-difference-value
#15
Naohisa Yoshida, Yuji Naito, Ritsu Yasuda, Takaaki Murakami, Ryohei Hirose, Kiyoshi Ogiso, Yutaka Inada, Osamu Dohi, Kazuhiro Kamada, Kazuhiko Uchiyama, Osamu Handa, Hideyuki Konishi, Rafiz Abdul Rani, Mitsuo Kishimoto, Eiichi Konishi, Yoshito Itoh
PURPOSE: Linked color imaging (LCI) by laser endoscopy is a novel narrow band light observation. In this study, we analyzed the efficacy of LCI for improving the various featured colorectal polyp's visibility utilizing a subjective endoscopist's visibility scoring and objective color difference (CD) value. METHODS: We retrospectively reviewed two pictures both with white light (WL) and LCI for 54 consecutive neoplastic polyps 2-20 mm in size. All pictures were evaluated by four endoscopists according to a published polyp visibility score from four (excellent visibility) to one (poor visibility)...
July 19, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28720472/mantle-cell-lymphoma-involving-the-esophagus-evaluated-by-magnifying-endoscopy-with-narrow-band-imaging
#16
Haruka Toyonaga, Masashi Fukushima, Tetsuro Inokuma, Yukihiro Imai
No abstract text is available yet for this article.
July 15, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28713060/a-standardized-imaging-protocol-for-the-endoscopic-prediction-of-dysplasia-within-sessile-serrated-polyps-with-video
#17
David J Tate, Mahesh Jayanna, Halim Awadie, Lobke Desomer, Ralph Lee, Stephen J Heitman, Mayenaaz Sidhu, Kathleen Goodrick, Nicholas G Burgess, Hema Mehajan, Duncan McLeod, Michael J Bourke
BACKGROUND AND AIMS: Dysplasia within sessile serrated polyps (SSPs) is difficult to detect, may be mistaken for an adenoma risking incomplete resection of the background serrated tissue, and is strongly implicated in interval cancer after colonoscopy. The use of endoscopic imaging to detect dysplasia within SSP has not been systematically studied. METHODS: Consecutively detected SSP ≥8 mm in size were evaluated using a standardized imaging protocol at a tertiary endoscopy center over 3 years...
July 13, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28712510/narrow-band-imaging-with-4k-technology-in-the-head-and-neck-preliminary-experience-and-technical-settings
#18
G Tirelli, M Piovesana, A Gatto, F Boscolo Nata
No abstract text is available yet for this article.
July 13, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28706424/new-magnifying-endoscopic-classification-for-superficial-esophageal-squamous-cell-carcinoma
#19
Su Jin Kim, Gwang Ha Kim, Moon Won Lee, Hye Kyung Jeon, Dong Hoon Baek, Bong Eun Lee, Geun Am Song
AIM: To assess the accuracy of a new magnifying endoscopy (ME) classification for predicting depth of invasion of superficial esophageal squamous cell carcinoma (SESCC). METHODS: This study included a total of 70 lesions in 69 patients with SESCC who underwent ME with narrow-band imaging (ME-NBI) before resection from August 2010 to July 2016. Accuracy of ME-NBI for predicting depth of invasion of SESCC was analyzed by using a new ME classification proposed by the Japan Esophageal Society (JES), and interobserver agreement was assessed...
June 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28706415/role-of-new-endoscopic-techniques-in-inflammatory-bowel-disease-management-has-the-change-come
#20
EDITORIAL
Loredana Goran, Lucian Negreanu, Ana Maria Negreanu
Despite significant therapeutic progress in recent years, inflammatory bowel disease (IBD), which includes Crohn's disease and ulcerative colitis, remains a challenge regarding its pathogenesis and long-term complications. New concepts have emerged in the management of this disease, such as the "treat-to-target" concept, in which mucosal healing plays a key role in the evolution of IBD, the risk of recurrence and the need for surgery. Endoscopy is essential for the assessment of mucosal inflammation and plays a pivotal role in the analysis of mucosal healing in patients with IBD...
June 28, 2017: World Journal of Gastroenterology: WJG
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