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Narrow band imaging

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https://www.readbyqxmd.com/read/28104480/the-effect-of-spatial-resolution-and-filtering-on-mapping-cardiac-fibrillation
#1
Benjamin King, Andreu Porta-Sánchez, Stéphane Massé, Nima Zamiri, Krishanand Balasundaram, Marjan Kusha, Nicholas Jackson, Shouvik Haldar, Karthikeyan Umapathy, Kumaraswamy Nanthakumar
BACKGROUND: Endocardial mapping tools use variable inter-electrode resolution whilst body surface mapping tools use narrow band pass filtering (BPF) to map fibrillatory mechanisms established by high resolution optical imaging. OBJECTIVES: To study the effect of resolution and BPF on the underlying mechanism being mapped. METHODS: Hearts from 14 healthy New Zealand white rabbits were Langendorff perfused. We studied the effect of spatial resolution and BPF on the location and characterization of rotors, by comparing phase singularities (PS) detected by high resolution un-filtered optical maps (OM), of fibrillating myocardium with decimated and filtered maps with simulated electrode spacing of 2, 5 and 8mm...
January 16, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28104024/-the-differential-diagnosis-of-narrow-band-imaging-for-the-leukoplakia-lesion-on-the-vocal-cord
#2
X G Ni
No abstract text is available yet for this article.
January 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/28086818/narrow-band-imaging-versus-lugol-chromoendoscopy-to-diagnose-squamous-cell-carcinoma-of-the-esophagus-a-systematic-review-and-meta-analysis
#3
Flavio Hiroshi Ananias Morita, Wanderley Marques Bernardo, Edson Ide, Rodrigo Silva Paula Rocha, Julio Cesar Martins Aquino, Mauricio Kazuyoshi Minata, Kendi Yamazaki, Sergio Barbosa Marques, Paulo Sakai, Eduardo Guimarães Hourneaux de Moura
BACKGROUND: In the early stage esophageal cancer, changes in the mucosa are subtle and pass unnoticed in endoscopic examinations using white light. To increase sensitivity, chromoscopy with Lugol's solution has been used. Technological advancements have led to the emergence of virtual methods of endoscopic chromoscopy, including narrow band imaging (NBI). NBI enhances the relief of the mucosa and the underlying vascular pattern, providing greater convenience without the risks inherent to the use of vital dye...
January 13, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28068703/tunnel-and-clip-endoscopic-submucosal-dissection-of-a-pharyngeal-superficial-squamous-cell-carcinoma-detected-with-narrow-band-imaging
#4
Jérémie Jacques, Jérôme Rivory, Vincent Lépilliez, Leslie Rinaldi, Jean-Christophe Saurin, Thierry Ponchon, Mathieu Pioche
No abstract text is available yet for this article.
February 2017: Endoscopy
https://www.readbyqxmd.com/read/28066614/the-role-of-bronchoscopy-in-the-diagnosis-of-early-lung-cancer-a-review
#5
REVIEW
Marco Andolfi, Rossella Potenza, Rosanna Capozzi, Valeria Liparulo, Francesco Puma, Kazuhiro Yasufuku
Lung cancer is the leading cause of cancer-related deaths worldwide with an overall 5-year survival rate of 17% after diagnoses. Indeed many patients tend to have a very poor prognosis, due to being diagnosed at an advanced stage. Conversely patients who are diagnosed at an early stage have a 5-year survival >70%, indicating that early detection of lung cancer is crucial to improve survival. Although flexible bronchoscopy is a relatively non-invasive procedure for patients suspected of having lung cancer, only 29% of carcinoma in situ (CIS) and 69% of microinvasive tumors were detectable using white light bronchoscopy (WLB) alone...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28066600/white-light-autofluorescence-and-narrow-band-imaging-bronchoscopy-for-diagnosing-airway-pre-cancerous-and-early-cancer-lesions-a-systematic-review-and-meta-analysis
#6
Jianrong Zhang, Jieyu Wu, Yujing Yang, Hua Liao, Zhiheng Xu, Lindsey Tristine Hamblin, Long Jiang, Lieven Depypere, Keng Leong Ang, Jiaxi He, Ziyan Liang, Jun Huang, Jingpei Li, Qihua He, Wenhua Liang, Jianxing He
BACKGROUND: We aimed to summarize the diagnostic accuracy of white light bronchoscopy (WLB) and advanced techniques for airway pre-cancerous lesions and early cancer, such as autofluorescence bronchoscopy (AFB), AFB combined with WLB (AFB + WLB) and narrow-band imaging (NBI) bronchoscopy. METHODS: We searched for eligible studies in seven electronic databases from their date of inception to Mar 20, 2015. In eligible studies, detected lesions should be confirmed by histopathology...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28053649/predicting-grain-yield-using-canopy-hyperspectral-reflectance-in-wheat-breeding-data
#7
Osval A Montesinos-López, Abelardo Montesinos-López, José Crossa, Gustavo de Los Campos, Gregorio Alvarado, Mondal Suchismita, Jessica Rutkoski, Lorena González-Pérez, Juan Burgueño
BACKGROUND: Modern agriculture uses hyperspectral cameras to obtain hundreds of reflectance data measured at discrete narrow bands to cover the whole visible light spectrum and part of the infrared and ultraviolet light spectra, depending on the camera. This information is used to construct vegetation indices (VI) (e.g., green normalized difference vegetation index or GNDVI, simple ratio or SRa, etc.) which are used for the prediction of primary traits (e.g., biomass). However, these indices only use some bands and are cultivar-specific; therefore they lose considerable information and are not robust for all cultivars...
2017: Plant Methods
https://www.readbyqxmd.com/read/28052402/electron-spin-resonance-studies-on-deuterated-nitroxyl-spin-probes-used-in-overhauser-enhanced-magnetic-resonance-imaging
#8
D David Jebaraj, Hideo Utsumi, A Milton Franklin Benial
The Electron Spin Resonance studies were carried out for 2 mM concentration of (14) N and (15) N -labeled 3-carbamoyl-2,2,5,5-tetramethyl-pyrrolidine-1-oxyl, 3-carboxy-2,2,5,5-tetramethyl-pyrrolidine-1-oxyl, 3-methoxycarbonyl-2,2,5,5-tetramethyl-pyrrolidine-1-oxyl and their deuterated nitroxyl radicals using X-band Electron Spin Resonance spectrometer. The ESR Line shape analysis was carried out. The Electron Spin Resonance parameters such as, linewidth, Lorentzian component, signal intensity ratio, rotational correlation time, hyperfine coupling constant and g-factor were estimated...
January 4, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28045267/perfect-thermal-emission-by-nanoscale-transmission-line-resonators
#9
Baoan Liu, Wei Gong, Bowen Yu, Pengfei Li, Sheng Shen
Thermal radiation with a narrow-band emission spectrum is of great importance in a variety of applications such as infrared sensing, thermophotovoltaics, radiation cooling and thermal circuits. Although resonant nanophotonic structures such as metamaterials and nanocavities have been demonstrated to achieve the narrow-band thermal emission, maximizing their radiation power towards perfect emission still remains challenging. Here, based on our recently developed Quasi-Normal Mode theory, we prove that thermal emission from a nanoscale transmission line resonator can always be maximized by tuning the waveguiding loss of the resonator or bending the structure...
January 3, 2017: Nano Letters
https://www.readbyqxmd.com/read/28042388/evidence-based-review-of-the-impact-of-image-enhanced-endoscopy-in-the-diagnosis-of-gastric-disorders
#10
REVIEW
Ikram Hussain, Tiing Leong Ang
Gastric cancer is the third most common cause of cancer-related death. Advanced stages of gastric cancers generally have grim prognosis. But, good prognosis can be achieved if such cancers are detected, diagnosed and resected at early stages. However, early gastric cancers and its precursors often produce only subtle mucosal changes and therefore quite commonly remain elusive at the conventional examination with white light endoscopy. Image-enhanced endoscopy makes mucosal lesions more conspicuous and can therefore potentially yield earlier and more accurate diagnoses...
December 16, 2016: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28036221/einstein-podolsky-rosen-entanglement-of-narrow-band-photons-from-cold-atoms
#11
Jong-Chan Lee, Kwang-Kyoon Park, Tian-Ming Zhao, Yoon-Ho Kim
Einstein-Podolsky-Rosen (EPR) entanglement introduced in 1935 deals with two particles that are entangled in their positions and momenta. Here we report the first experimental demonstration of EPR position-momentum entanglement of narrow-band photon pairs generated from cold atoms. By using two-photon quantum ghost imaging and ghost interference, we demonstrate explicitly that the narrow-band photon pairs violate the separability criterion, confirming EPR entanglement. We further demonstrate continuous variable EPR steering for positions and momenta of the two photons...
December 16, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/28028382/fice-vs-narrow-band-imaging-for-in-vivo-histologic-diagnosis-of-polyps
#12
Cevher Akarsu, Nuri Alper Sahbaz, Ahmet Cem Dural, Mustafa Gokhan Unsal, Osman Kones, Ali Kocatas, Ilkay Halicioglu, Halil Alis
BACKGROUND AND OBJECTIVES: Gastrointestinal cancers are the most frequently occurring cancers worldwide. Diagnosis and removal of polyps during screening endoscopy decreases the prevalence of colon cancer and cancer-related mortality, and it is considered to be the gold standard in gastrointestinal system cancer prevention. Technological innovations in endoscopy have led to revolutionary developments in many areas. Flexible spectral imaging color enhancement (FICE) and narrow-band imaging (NBI) are forms of digital chromoendoscopy and enhance the endoscopic images without the need for a dye...
October 2016: JSLS: Journal of the Society of Laparoendoscopic Surgeons
https://www.readbyqxmd.com/read/28005872/flat-top-bandpass-filters-enabled-by-cascaded-resonant-gratings
#13
Yeong Hwan Ko, Robert Magnusson
Narrow bandpass filters are applied in laser systems, imaging, telecommunications, and astronomy. Traditionally implemented with thin-film stacks, there is recent interest in alternative means incorporating photonic resonance effects. Here, we demonstrate a new approach to bandpass filters that engages the guided-mode resonance effect working with a cavity-based Fabry-Perot resonance to flatten and steepen the pass band. Both of these resonance mechanisms are native to simple resonant bandpass filters placed in a cascade...
October 15, 2016: Optics Letters
https://www.readbyqxmd.com/read/28005009/computer-aided-classification-of-gastrointestinal-lesions-in-regular-colonoscopy
#14
Pablo Mesejo, Daniel Pizarro, Armand Abergel, Olivier Rouquette, Sylvain Beorchia, Laurent Poincloux, Adrien Bartoli
We have developed a technique to study how good computers can be at diagnosing gastrointestinal lesions from regular (white light and narrow banded) colonoscopic videos compared to two levels of clinical knowledge (expert and beginner). Our technique includes a novel tissue classification approach which may save clinician's time by avoiding chromoendoscopy, a time-consuming staining procedure using indigo carmine. Our technique also discriminates the severity of individual lesions in patients with many polyps, so that the gastroenterologist can directly focus on those requiring polypectomy...
September 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28002507/narrow-band-imaging-endoscopy-for-detection-of-precancerous-lesions-of-upper-gastrointestinal-tract
#15
Dan Nicolae Florescu, Elena Tatiana Ivan, Adriana Mihaela Ciocâlteu, Ioana Andreea Gheonea, Diana Rodica Tudoraşcu, Tudorel Ciurea, Dan IonuŢ Gheonea
Gastric cancer (GC) is an important health problem despite the advances in surgery and chemotherapy and although the incidence is decreasing, GC is still considered the second most common cause of deceases produced by cancer. Survival rates in gastric cancer are low, mainly because most patients are often diagnosed in late stages. The current interest in the diagnostic of GC is the detection of early gastric cancer. Advances in high-resolution endoscopic techniques such as narrow band imaging (NBI) allow the detection of early precancerous lesions like polyps or metaplastic mucosa...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27998304/foveolar-gastric-metaplasia-presenting-as-a-duodenal-tumor-with-an-atypical-appearance-a-case-report
#16
Takahiro Abe, Masayuki Kato, Shuzo Kohno, Sigeharu Hamatani, Yosuke Kawahara, Kimio Isshi, Koji Matsuda, Kazuki Sumiyama
BACKGROUND: Foveolar gastric metaplasia of the duodenum is a frequent but not as yet considered correlate of endoscopically detected duodenal polyps. The majority of foveolar gastric metaplasias associated with polyps presented a typical benign endoscopic appearance and they were diagnosed by biopsy. Here we report a case of a surgical-resected foveolar gastric metaplasia manifesting as a duodenal tumor with an atypical appearance. CASE PRESENTATION: An asymptomatic 56-year-old Asian man who presented with a foveolar gastric metaplasia of atypical appearance and had previously undergone esophagogastroduodenoscopy was referred to our hospital...
December 20, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27997741/advances-in-pleuroscopy
#17
REVIEW
Stavros Anevlavis, Marios E Froudarakis
OBJECTIVES: To describe the technique of pleuroscopy, its clinical uses such as diagnosis of exudative pleural effusion, treatment of pleural infection, treatment of pneumothorax and diagnosis and pleurodesis of malignant pleural mesothelioma. Also to describe the newer techniques developed such as minothoracoscopy, semirigid thoracoscopy, narrow band imaging pleuroscopy, infrared pleuroscopy, autofluorescence pleuroscopy. DATA SOURCE: We searched the pubmed the last decade for publications with the key words pleuroscopy, medical thoracoscopy, pneumothorax and pleuroscopy, malignant pleural mesothelioma, minothoracoscopy, semirigid thoracoscopy, autofluorescence pleuroscopy...
December 20, 2016: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/27995189/evaluation-of-microvascular-findings-of-deeply-invasive-colorectal-cancer-by-endocytoscopy-with-narrow-band-imaging
#18
Hiroki Nakamura, Shin-Ei Kudo, Masashi Misawa, Shinichi Kataoka, Kunihiko Wakamura, Takemasa Hayashi, Toyoki Kudo, Yuichi Mori, Kenichi Takeda, Katsuro Ichimasa, Hideyuki Miyachi, Atushi Katagiri, Fumio Ishida, Haruhiro Inoue
: Background and study aims: Magnifying narrow-band imaging (NBI) is useful for examination of colorectal lesions, and endocytoscopy (EC) allows diagnostic evaluation of structural atypia, nuclear atypia, and vascular structures of colorectal tumors. The aim of this study was to examine surface microvessels in deep invasive colorectal cancer using EC with a new NBI video processor system. Patients and methods: We retrospectively assessed 132 colorectal neoplastic lesions: 81 adenomas, 18 intramucosal cancers, 4 submucosal slightly invasive cancers, and 29 submucosal deep invasive cancers...
December 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27978892/-role-of-narrow-band-imaging-endoscopy-in-the-subglottic-hemangioma
#19
Y Xin, S W Ma, J Chen
No abstract text is available yet for this article.
December 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/27977882/helicobacter-pylori-negative-early-gastric-adenocarcinoma-with-complete-intestinal-mucus-phenotype-mimicking-verrucous-gastritis
#20
Shunsuke Yoshii, Yoshito Hayashi, Tetsuo Takehara
Helicobacter pylori (H. pylori)-negative gastric cancer was reported to be very rare but may increase owing to the reduction of H. pylori infection (1-3) . Here, we report a case of differentiated-type adenocarcinoma arising from H. pylori-negative gastric pyloric mucosa, which could be diagnosed using magnifying endoscopy with narrow band imaging (NBI-ME). This article is protected by copyright. All rights reserved.
December 15, 2016: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
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