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Narrow band imaging

Keisuke Kawasaki, Yasuko Fujita, Noriyuki Uesugi, Tamotsu Sugai, Takayuki Matsumoto
No abstract text is available yet for this article.
March 2018: Journal of Gastrointestinal and Liver Diseases: JGLD
Xiu-Xiu Zhang, Yi-Zhen Song, Fang Fang, Zhi-Yong Wu
On-site rapid monitoring of nitrite as an assessment indicator of the environment, food, and physiological systems has drawn extensive attention. Here, electrokinetic stacking (ES) was combined with colorimetric reaction on a paper-based device (PAD) to achieve colorless nitrite detection with smartphone. In this paper, nitrite was stacked on the paper fluidic channel as a narrow band by electrokinetic stacking. Then, Griess reagent was introduced to visualize the stacking band. Under optimal conditions, the sensitivity of nitrite was 160-fold increased within 5 min...
March 19, 2018: Analytical and Bioanalytical Chemistry
Chenzhou Wu, John Gleysteen, Nutte Tarn Teraphongphom, Yi Li, Eben Rosenthal
Head and neck cancers become a severe threat to human's health nowadays and represent the sixth most common cancer worldwide. Surgery remains the first-line choice for head and neck cancer patients. Limited resectable tissue mass and complicated anatomy structures in the head and neck region put the surgeons in a dilemma between the extensive resection and a better quality of life for the patients. Early diagnosis and treatment of the pre-malignancies, as well as real-time in vivo detection of surgical margins during en bloc resection, could be leveraged to minimize the resection of normal tissues...
March 18, 2018: International Journal of Oral Science
Hanna Klimza, Joanna Jackowska, Cesare Piazza, Jacek Banaszewski, Malgorzata Wierzbicka
INTRODUCTION: Trans-oral laser microsurgery is an established technique for the treatment of early and moderately advanced laryngeal cancer. OBJECTIVE: The authors intend to test the usefulness of narrow-band imaging in the intraoperative assessment of the larynx mucosa in terms of specifying surgical margins. METHODS: Forty-four consecutive T1-T2 glottic cancers treated with trans-oral laser microsurgery Type I-VI cordectomy were presented...
March 1, 2018: Brazilian Journal of Otorhinolaryngology
Sara Moccia, Gabriele O Vanone, Elena De Momi, Andrea Laborai, Luca Guastini, Giorgio Peretti, Leonardo S Mattos
BACKGROUND AND OBJECTIVE: Early-stage diagnosis of laryngeal cancer is of primary importance to reduce patient morbidity. Narrow-band imaging (NBI) endoscopy is commonly used for screening purposes, reducing the risks linked to a biopsy but at the cost of some drawbacks, such as large amount of data to review to make the diagnosis. The purpose of this paper is to present a strategy to perform automatic selection of informative endoscopic video frames, which can reduce the amount of data to process and potentially increase diagnosis performance...
May 2018: Computer Methods and Programs in Biomedicine
Yusuke Horiuchi, Junko Fujisaki, Noriko Yamamoto, Shoichi Yoshimizu, Akiyoshi Ishiyama, Toshiyuki Yoshio, Toshiaki Hirasawa, Yorimasa Yamamoto, Masatsugu Nagahama, Hiroshi Takahashi, Tomohiro Tsuchida
BACKGROUND: It is unknown how the accuracy rate of diagnostic demarcation of undifferentiated-type early gastric cancers (UD-type EGCs) differs between patients uninfected with Helicobacter pylori (H. pylori) and patients with and without H. pylori eradication. This study assessed and compared the diagnostic accuracy rate in the H. pylori-uninfected group and the non-H. pylori eradication and H. pylori eradication groups. METHODS: Subjects were 81 patients with 81 lesions who underwent endoscopic submucosal dissection between January 2010 and January 2015...
March 13, 2018: Gastric Cancer
Y C Hao, C L Xiao, K Liu, Y Q Liu, L L Ma
Objective: To investigate application value of narrow-band imaging (NBI) flexible ureteroscopy in the diagnosis, treatment and follow-up of upper urinary tract transitional carcinomas (UTUC). Methods: From June 2015 to June 2017, 16 patients of UTUC were treated by flexible ureteroscopy with white light (WLI) and NBI at Department of Urology, Peking University Third Hospital , including 10 females and 6 males. The age of patients ranged from 43 to 84 years (average 68.9 years). There were 54 cases, including 16 cases with first-suspicion of cancer, and 38 cases with known of UTUC as follow-up...
March 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
Heetaek Oh, Gwang Ha Kim, Moon Won Lee, Hye Kyung Jeon, Dong Hoon Baek, Bong Eun Lee
Background and study aims:  Heterotopic pancreas is a common subepithelial lesion in the stomach. However, its histological diagnosis is difficult when tissue samples are obtained with a conventional biopsy forceps. This study aimed to describe the magnifying endoscopy with narrow-band imaging (ME-NBI) features of gastric heterotopic pancreas. Patients and methods:  We retrospectively analyzed a database of all patients who underwent endoscopic ultrasonography (EUS) at Pusan National University Hospital from January 2010 to December 2010...
March 2018: Endoscopy International Open
Francisco Javier García-Alonso, Isabel Manzano Santamaría, Antonio Guardiola Arévalo, Rubén Pique Becerra, Amanda Leandro Barros, Noelia de Sande Rivera, Guillermo Moreno Casas, Silvia Arribas Terradillos, Álvaro Llerena Riofrío, Cristian Aitor Escolano Peco, Emma Alguacil Rodríguez, Fernando Bermejo
BACKGROUND AND AIMS: Accurate optical diagnosis of diminutive polyps would allow implementing a resect and discard strategy. We evaluated the learning curve of a single training session followed by self-education in subjects with no endoscopic experience. METHODS: Learning curves were evaluated in 38 subjects employing learning curve-cumulative summation (LC-CUSUM) tests, with each participant attending one training session regarding narrow band imaging and optical diagnosis and then individually assessing 100 lesions, receiving feedback after each diagnosis...
March 9, 2018: Digestive Diseases and Sciences
Donato Girolamo, Huan-Yu Chang, Fuh-Gwo Yuan
A fully non-contact laser-based nondestructive inspection (NDI) system is developed to detect and visualize damage in structures. The study focuses on the size quantification and characterization of a barely visible impact damage (BVID) in a honeycomb composite panel. The hardware consists of a Q-switched Nd:YAG pulse laser that probes the panel by generating broadband guided waves via thermo-elastic expansion. The laser, in combination with a set of galvano-mirrors is used to raster scan over a two-dimensional surface covering the damaged region of an impacted quasi-isotropic [60/0/-60]s honeycomb composite panel...
February 16, 2018: Ultrasonics
Seung Bin Kim, Sung Goo Yoon, Jonghyun Tae, Jae Yoon Kim, Ji Sung Shim, Sung Gu Kang, Jun Cheon, Jeong Gu Lee, Je Jong Kim, Seok Ho Kang
Purpose: The purpose of this study was to evaluate the efficacy of narrow-band imaging (NBI) as a diagnostic tool for detecting bladder tumors during cystoscopy compared with white light cystoscopy (WLC). Materials and Methods: From December 2013 to June 2017, a randomized prospective study was conducted on 198 patients underwent transurethral resection of bladder tumor by a single surgeon. The patients were divided into two groups according to diagnostic method...
March 2018: Investigative and Clinical Urology
Wei Gai, Xi-Feng Jin, Ronglian Du, Ling Li, Tong-Hai Chai
OBJECTIVE: The aim of this study is to evaluate the efficacy of narrow-band imaging (NBI) in the detecting early esophageal cancer and precancerous lesions and to investigate the risk factors for its occurrence. METHODS: The esophagus was examined with ordinary endoscopy, NBI, and iodine staining. All the lesions were confirmed by histopathologically as the gold standard; NBI and intrapapillary capillary scale (IPCL) scale were compared with pathologic diagnosis...
March 8, 2018: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
Naohisa Yoshida, Yuji Naito, Takaaki Murakami, Kiyoshi Ogiso, Ryohei Hirose, Yutaka Inada, Mitsuo Kishimoto, Rafiz Abdul Rani, Yoshito Itoh
Cold snare polypectomy (CSP) should be performed for benign lesions, though an accurate diagnosis is sometimes difficult with only white light observation. Irregular findings by narrow-band imaging (NBI) are useful for differentiating malignant lesions from benign lesions, and cases with this finding are not expected for CSP. We present a diminutive T1 cancer resected by CSP as a reflection case. A 68-year-old man underwent colonoscopy for surveillance after polypectomy. A reddish polyp 4 mm in size was detected at the rectum...
January 2018: Case Reports in Gastroenterology
Yuki Kanno, Naoki Furuya, Mariko Okamoto, Akira Noguchi, Takeo Inoue, Masamichi Mineshita
We report the case of a 68-year-old male non-smoker suffering from shortness of breath for 1 year. He was referred to our institution for a definitive diagnosis. Both chest X-ray and computed tomography scans showed bilateral hydrothorax with no pleural thickening. We performed flexi-rigid thoracoscopic pleural biopsy on the right side with a single port under local anaesthesia. Multiple white nodules were seen in parietal and visceral pleura, and these nodules were small and flat under white light. Narrow-band imaging demonstrated pathognostic findings on parietal pleura...
April 2018: Respirology Case Reports
Yugo Iwaya, Catherine J Streutker, Norman Marcon
No abstract text is available yet for this article.
February 26, 2018: Gastrointestinal Endoscopy
Fan Zhou, Liucheng Wu, Mingwei Huang, Qinwen Jin, Yuzhou Qin, Jiansi Chen
BACKGROUND: Previous clinical trials have demonstrated the diagnostic accuracy of magnifying narrow-band (ME-NBI) for gastric cancerous lesions, but the results are inconsistent. The purpose of this meta-analysis is to investigate the accuracy of ME-NBI in distinguishing between cancerous and noncancerous gastric lesions. METHODS: Systematic literature searches were conducted until October 2016 in PubMed, Embase by 2 independent reviewers. Meta-analysis was performed to calculate the pooled sensitivity, specificity...
March 2018: Medicine (Baltimore)
C S Farah
PURPOSE: Overall local recurrence of oral squamous cell carcinoma (OSCC) is estimated at 20%. Incomplete primary tumour excision contributes to localised postsurgical recurrence of OSCC. The purpose of this study was to report on patient outcomes following resection of OSCC using Narrow Band Imaging (NBI). MATERIALS AND METHODS: Patients with OSCC requiring resection were visualised under conventional white light (WL) then NBI using an Olympus NBI ENF-VQ nasendoscope with CLV-180 light source and processor (Olympus Medical Systems, Tokyo, Japan)...
March 2018: Oral Diseases
Eric L Crowell, Laura Baker, Alice Z Chuang, Robert M Feldman, Nicholas P Bell, Patricia Chévez-Barrios, Lauren S Blieden
PURPOSE: To identify the presence or absence of 3 identifiable landmarks: trabecular meshwork (TM), Schlemm's canal (SC), and a novel landmark termed the band of extracanalicular limbal lamina (BELL), which is a landmark adjacent to SC visible on anterior segment (AS) OCT. These landmarks also were analyzed pathologically to identify all 3 landmarks. DESIGN: Retrospective review. PARTICIPANTS: One eye per participant from prior institutional review board-approved studies in which AS OCT imaging was performed...
February 21, 2018: Ophthalmology
Koji Mita, Kohei Kobatake, Shinya Ohara, Masao Kato
The aim of this study was to reveal the clinical benefits of transurethral resection (TUR) under narrow band imaging (NBI-TUR) for non-muscle-invasive bladder cancer (NMIBC) compared with conventional white light imaging TUR (WLI-TUR). The subjects were 172 patients with NMIBC who were followed for more than 1 year after undergoing TUR with no additional postoperative treatment. In the WLI-TUR group (n=101), lesions that were detected as positive after systematic intravesical observation under WLI were resected completely under WLI...
January 2018: Hinyokika Kiyo. Acta Urologica Japonica
S Sobrino-Cossío, J M Abdo Francis, F Emura, E S Galvis-García, M L Márquez Rocha, G Mateos-Pérez, C B González-Sánchez, N Uedo
INTRODUCTION AND OBJECTIVE: Atrophy and intestinal metaplasia are early phenotypic markers in gastric carcinogenesis. White light endoscopy does not allow direct biopsy of intestinal metaplasia due to a lack of contrast of the mucosa. Narrow-band imaging is known to enhance the visibility of intestinal metaplasia, to reduce sampling error, and to increase the diagnostic yield of endoscopy for intestinal metaplasia in Asian patients. The aim of our study was to validate the diagnostic performance of narrow-band imaging using 1...
February 12, 2018: Revista de Gastroenterología de México
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