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Narrow band imaging

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https://www.readbyqxmd.com/read/29158935/synchronous-hpv-related-cancer-of-bilateral-tonsils-detected-using-transoral-endoscopic-examination-with-narrow-band-imaging
#1
Fukuko Shimizu, Kenji Okami, Koji Ebisumoto, Daisuke Maki, Akihiro Sakai, Go Ogura, Naoya Nakamura, Masahiro Iida
Background: The incidence of human papillomavirus- (HPV-) related oropharyngeal squamous cell carcinoma (OPSCC) has been rapidly increasing worldwide. HPV is reported in approximately 50% cases of OPSCC in Japan. However, there are few reports of synchronous bilateral HPV-positive tonsillar carcinoma, and, in almost all those cases, carcinoma was detected using positron emission tomography/computed tomography and/or bilateral tonsillectomy. Methods and Results: We report the case of a 63-year-old male with bilateral tonsillar carcinoma detected using transoral endoscopic examination with narrow-band imaging (NBI)...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/29150027/tailored-resections-in-oral-and-oropharyngeal-cancer-using-narrow-band-imaging
#2
Giancarlo Tirelli, Marco Piovesana, Alberto Vito Marcuzzo, Annalisa Gatto, Matteo Biasotto, Rossana Bussani, Lorenzo Zandonà, Fabiola Giudici, Francesca Boscolo Nata
PURPOSE: In a previous pilot study we observed that intra-operative narrow-band imaging (NBI) helps achieve clear superficial resection margins. The aim of this study was to verify if the use of intra-operative NBI can help to obtain tailored resections and if it is influenced by the lesion site, aspects not investigated in our previous study. MATERIALS AND METHODS: The resection margins of 39 oral and 22 oropharyngeal squamous cell carcinomas were first set at 1...
November 10, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/29141288/-application-of-stroboscopy-and-narrow-band-imaging-endoscopy-in-the-diagnosis-of-vocal-cord-leukoplakia
#3
J Li, W Xu, L Y Cheng
Objective: To investigate the value of stroboscopy and narrow band imaging (NBI)endoscopy in the diagnosis of vocal cord leukoplakia. Methods: Two hundred and forty-six patients with vocal cord leukoplakia who underwent laryngeal microsurgery and diagnosed by histopathology were recruited between August 2014 and July 2016 in this retrospective study. The diagnostic accuracy of stroboscopy and narrow band imaging endoscopy in the diagnosis of vocal cord leukoplakia was compared. SPSS21.0 software was used to analyze the data...
November 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/29138887/-developments-in-dysphagia-diagnostics-presentation-of-an-interdisciplinary-concept
#4
REVIEW
C Pflug, T Flügel, J C Nienstedt
Demographic developments and medical progress will cause the already high prevalence of swallowing disorders to increase further in the future. With the same number of specialists and economic resources, it is necessary to improve the efficiency of dysphagia diagnostics and continue to offer patients a treatment concept tailored to their needs. Manifold and often co-existing causes of dysphagia require interdisciplinary cooperation in this area. Endoscopic swallowing diagnostics play a prominent role in dysphagia diagnostics and should always contain thorough endoscopy of the upper aerodigestive tract-the domain of the ENT specialist and phoniatrician...
November 14, 2017: HNO
https://www.readbyqxmd.com/read/29123273/in-vivo-imaging-of-the-microvasculature-of-the-soft-tissue-margins-of-osteonecrotic-jaw-lesions
#5
P Bastos, V Patel, F Festy, N Hosny, R J Cook
Introduction Given the increasing incidence of medication-related jaw osteonecrosis, and recognition of the mucosal blood supply's importance, we have developed a non-invasive Real Time Optical Vascular Imaging (RTOVI) instrument. Imaging the red blood cells within the sub-mucosal capillary networks demonstrates the microcirculatory anatomy. We report a small trial, demonstrating the technique's viability, examining mucosal microcirculatory changes adjacent to osteonecrotic lesions.Aims Imaging the microvasculature of soft tissue margins of patients' exposed necrotic bone lesions in situ was intended to provide unique observational as well as quantitative data, using an image analysis routine, based on ImageJ software...
November 10, 2017: British Dental Journal
https://www.readbyqxmd.com/read/29110046/-supplementary-optical-techniques-for-the-detection-of-nonmuscle-invasive-bladder-cancer
#6
REVIEW
S Aeishen, Y Dawood, S Papadoukakis, M Horstmann
White light cystoscopy (WL) is the gold standard for the detection of bladder cancer. It can be performed using a rigid or flexible urethrocystoscope. With the more recent introduction of high definition (HD) techniques, WL cystoscopy has been decisively improved. Supplementary optical techniques are also used to improve the detection of bladder cancer. Among these are photodynamic diagnosis (PDD), narrow-band imaging (NBI), S‑technologies of IMAGE1 S, optical coherence tomography (OCT), confocal laser endomicroscopy (CLE), and Raman spectroscopy...
November 6, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/29109052/magnetic-resonance-imaging-with-rf-encoding-on-curved-natural-slices
#7
Gordon E Sarty, Logi Vidarsson
While the idea of using spatial encoding fields (SEM) for image formation has been proven, conventional wisdom still holds that a magnetic resonance imaging (MRI) system begins with a highly uniform magnetic field. In particular, radio frequency (RF) encoding MRIs designed and tested to date have largely used uniform magnetic fields. Here we demonstrate magnetic resonance imaging in a magnetic field with a built-in gradient that gives non-planar slices - curved surfaces - when the nuclear spins are excited with narrow band RF pulses...
November 4, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29106761/a-case-of-diminutive-duodenal-deep-submucosal-invasive-adenocarcinoma-resected-by-endoscopic-mucosal-resection
#8
Naoki Yorita, Yoji Sanomura, Shinji Tanaka
A 50-year-old man underwent esophagogastroduodenoscopy, which revealed a tiny duodenal polypoid tumor 4 mm in diameter in the descending part of the duodenum. The tumor had no depressive area. Narrow-band imaging magnifying endoscopic findings revealed regular surface and vessel patterns. This article is protected by copyright. All rights reserved.
November 6, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/29106657/posterior-upper-rib-excision-for-neurogenic-thoracic-outlet-syndrome-feasibility-and-early-outcomes
#9
Kamran Aghayev, Ozcan Ciklatekerlio
BACKGROUND: There are several surgical treatment options for neurogenic thoracic outlet syndrome (n-TOS). However, the first rib has been shown to be the common denominator of all TOS forms and the degree of its resection has been shown to correlate with the long-term success. OBJECTIVE: To demonstrate the feasibility of posterior upper rib excision (PURE) and report early outcomes. METHODS: Nine patients presented with signs and symptoms of n-TOS...
July 6, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29104910/implementation-of-real-time-probe-based-confocal-laser-endomicroscopy-pcle-for-differentiation-of-colorectal-polyps-during-routine-colonoscopy
#10
Tim D G Belderbos, Martijn G H van Oijen, Leon M G Moons, Peter D Siersema
Background and aims:  Probe-based confocal laser endomicroscopy (pCLE) is used to differentiate between neoplastic and non-neoplastic colorectal polyps during colonoscopy. We aimed to assess the accuracy of two endoscopists starting to use real-time pCLE for differentiation of colorectal polyps and to determine the negative predictive value (NPV) for neoplasia in polyps ≤ 5 mm. Methods:  Patients undergoing colonoscopy in a tertiary hospital were included in this prospective trial...
November 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/29100292/diagnosis-of-nonexophytic-nasopharyngeal-lesion-with-endoscopy-guided-core-needle-biopsy-after-narrow-band-imaging
#11
Min Li, Shenhong Qu, Yangda Qin, Jinlong Lu, Shuilian Yu, Guiping Lan, Jingjin Wen, Yong Yang, Yongfeng Si
Background: Due to the obstruction of the surrounding structures or stiff mucosa, the primary and recurrent nonexophytic nasopharyngeal carcinoma (NE-NPC) patients are difficult to be diagnosed histologically by traditional forceps biopsy. Results: All the 15 cases had adequate biopsy for histological diagnosis. There were 5 cases of primary and 7 cases of recurrent NE-NPC, and 3 cases of inflammatory lesion. The histopathological diagnosis was consistent with the follow-up visit...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29099730/benign-vocal-fold-lesions-update-on-nomenclature-cause-diagnosis-and-treatment
#12
Matthew R Naunheim, Thomas L Carroll
PURPOSE OF REVIEW: The management of benign vocal fold lesions (BVFLs) continues to evolve. This article will review the recent literature surrounding the nomenclature, cause, diagnosis, and treatment of BVFLs, including polyps, nodules, cysts, and reactive lesions. RECENT FINDINGS: The taxonomy of vocal fold lesions has been refined, and it serves as a common descriptive language for diagnosis, treatment algorithms, and reporting of outcomes. Though these lesions are known to be the result of phonotrauma, investigation into inflammatory mediators, apoptosis, and laryngopharyngeal reflux provide further elucidation of their underlying pathophysiology...
December 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/29092212/hyper-selective-plasmonic-color-filters
#13
Dagny Fleischman, Luke A Sweatlock, Hirotaka Murakami, Harry Atwater
The subwavelength mode volumes of plasmonic filters are well matched to the small size of state-of-the-art active pixels in CMOS image sensor arrays used in portable electronic devices. Typical plasmonic filters exhibit broad (> 100 nm) transmission bandwidths suitable for RBG or CMYK color filtering. Dramatically reducing the peak width of filter transmission spectra would allow for the realization of CMOS image sensors with multi- and hyperspectral imaging capabilities. We find that the design of 5 layer metal-insulator-metal-insulator-metal structures gives rise to multi-mode interference phenomena that suppress spurious transmission features and give rise to single transmission bands as narrow as 17 nm...
October 30, 2017: Optics Express
https://www.readbyqxmd.com/read/29081806/pancreatic-tuberculosis-with-vascular-involvement-and-peritoneal-dissemination-in-a-young-man
#14
Meng Zhu, Ning Zhang, Wei Tao, Zhitao Wang, Shuixiang He
Pancreatic tuberculosis (TB) is an extremely rare form of extrapulmonary tuberculosis even in endemic areas that masquerades as a mass or inflammation because of lack of typical clinical manifestations and radiologic features and therefore usually misdiagnosed as a pancreatic malignancy or pancreatitis. Here we present a 23-year-old young man with pancreatic tuberculosis mimicking pancreatic head carcinoma A man who suffered from upper abdominal pain and nausea for half a month was admitted to our hospital...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/29080491/global-optimal-hybrid-geometric-active-contour-for-automated-lung-segmentation-on-ct-images
#15
Weihang Zhang, Xue Wang, Pengbo Zhang, Junfeng Chen
Lung segmentation on thoracic CT images plays an important role in early detection, diagnosis and 3D visualization of lung cancer. The segmentation accuracy, stability, and efficiency of serial CT scans have a significant impact on the performance of computer-aided detection. This paper proposes a global optimal hybrid geometric active contour model for automated lung segmentation on CT images. Firstly, the combination of global region and edge information leads to high segmentation accuracy in lung regions with weak boundaries or narrow bands...
October 12, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29080146/use-of-narrow-band-imaging-and-4k-technology-in-otology-and-neuro-otology-preliminary-experience-and-feasibility-study
#16
Henry Zhang, Phui Yee Wong, Tiarnan Magos, Jabin Thaj, Gaurav Kumar
The advent of the endoscope has facilitated otological surgery in recent years. Advances in optical technology have led to the development of high definition visualisation, such as 4K magnification. Narrow band imaging (NBI) has been shown to improve visualisation of tissue based on varying degrees of vascularity. This is a feasibility study, the first of its kind, aiming to investigate the appearances of middle ear anatomy and pathology (tympanic membrane, tympanosclerosis, cholesteatoma, granulation, endolymphatic sac hydrops, otosclerosis) under the NBI filter, using a high definition 4K endoscope...
October 27, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29070477/-endoscopic-analysis-of-early-esophageal-cancer-and-precancerous-lesions-in-kazakh-patients
#17
Juan Xu, Zhi-Gang Gao, Lei Wang
OBJECTIVE: To explore the value of endoscopic narrow-band imaging in the diagnosis of early-stage esophageal cancer and precancerous lesions in Kazakh patients. METHODS: A total of 106 Kazakh patients with esophageal mucosa lesions diagnosed by routine endoscopy in our hospital from January 2014 to July 2016 were enrolled in this analysis with 30 randomly selected patients with normal endoscopic findings of the esophageal mucosa as the control group. The morphological changes of papillary capillary loop (IPCL) of the esophageal epithelium in the two groups were observed by narrow-band imaging magnifying endoscopy...
October 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/29066576/real-time-differentiation-of-adenomatous-and-hyperplastic-diminutive-colorectal-polyps-during-analysis-of-unaltered-videos-of-standard-colonoscopy-using-a-deep-learning-model
#18
Michael F Byrne, Nicolas Chapados, Florian Soudan, Clemens Oertel, Milagros Linares Pérez, Raymond Kelly, Nadeem Iqbal, Florent Chandelier, Douglas K Rex
BACKGROUND: In general, academic but not community endoscopists have demonstrated adequate endoscopic differentiation accuracy to make the 'resect and discard' paradigm for diminutive colorectal polyps workable. Computer analysis of video could potentially eliminate the obstacle of interobserver variability in endoscopic polyp interpretation and enable widespread acceptance of 'resect and discard'. STUDY DESIGN AND METHODS: We developed an artificial intelligence (AI) model for real-time assessment of endoscopic video images of colorectal polyps...
October 24, 2017: Gut
https://www.readbyqxmd.com/read/29065467/adaptive-microwave-staring-correlated-imaging-for-targets-appearing-in-discrete-clusters
#19
Chao Tian, Zheng Jiang, Weidong Chen, Dongjin Wang
Microwave staring correlated imaging (MSCI) can achieve ultra-high resolution in real aperture staring radar imaging using the correlated imaging process (CIP) under all-weather and all-day circumstances. The CIP must combine the received echo signal with the temporal-spatial stochastic radiation field. However, a precondition of the CIP is that the continuous imaging region must be discretized to a fine grid, and the measurement matrix should be accurately computed, which makes the imaging process highly complex when the MSCI system observes a wide area...
October 21, 2017: Sensors
https://www.readbyqxmd.com/read/29051335/coronary-capillary-blood-flow-in-a-rat-model-of-congestive-heart-failure
#20
Heather J Kagan, Varujan D Belekdanian, Jiqiu Chen, Peter Backeris, Nadjib Hammoudi, Irene C Turnbull, Kevin D Costa, Roger J Hajjar
The aim of this study is to explore the role of abnormal coronary microvasculature morphology and hemodynamics in the development of congestive heart failure (CHF). METHODS: CHF was induced in rats by aortic banding, followed by ischemia/reperfusion and later aortic debanding. Polymerized casts of coronary vasculature were imaged under a Scanning Electron Microscope (SEM). Matrix Laboratory (MATLAB) software was used to calculate Capillary Structure Index (CSI), a measure of structural alignment also called Mean Vector Length (MVL), for 93 SEM images of coronary capillaries (CSI→ 1 perfect linearity, CSI→ 0 circular disarray)...
October 19, 2017: Journal of Applied Physiology
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