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confocal endomicroscopy

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https://www.readbyqxmd.com/read/29344572/expert-led-didactic-versus-self-directed-audiovisual-training-of-confocal-laser-endomicroscopy-in-evaluation-of-mucosal-barrier-defects
#1
Roy Huynh, Matthew Ip, Jeff Chang, Craig Haifer, Rupert W Leong
Background and study aims:  Confocal laser endomicroscopy (CLE) allows mucosal barrier defects along the intestinal epithelium to be visualized in vivo during endoscopy. Training in CLE interpretation can be achieved didactically or through self-directed learning. This study aimed to compare the effectiveness of expert-led didactic with self-directed audiovisual teaching for training inexperienced analysts on how to recognize mucosal barrier defects on endoscope-based CLE (eCLE). Materials and methods:  This randomized controlled study involved trainee analysts who were taught how to recognize mucosal barrier defects on eCLE either didactically or through an audiovisual clip...
January 2018: Endoscopy International Open
https://www.readbyqxmd.com/read/29344564/endoscopic-ultrasound-guided-needle-based-confocal-laser-endomicroscopy-in-solid-pancreatic-masses-a-prospective-validation-study
#2
John Gásdal Karstensen, Tatiana Cârţână, Codruţa Constantinescu, Silviu Dumitrașcu, Bojan Kovacevic, Pia Klausen, Hazem Hassan, Tobias Wirenfeldt Klausen, Helga Bertani, Manoop S Bhutani, Adrian Săftoiu, Peter Vilmann
Background and study aims:  Endoscopic ultrasound fine-needle aspiration (EUS-FNA) is a keystone in diagnosing and staging of pancreatic masses. Recently, a microfiber that can pass through a 19-gauge needle has been introduced for confocal laser endomicroscopy (nCLE). The aims of this study were to evaluate the diagnostic value and the reproducibility of nCLE criteria for solid malignant lesions. Patients and methods:  This prospective dual-center study included patients with pancreatic masses suspicious of malignancy referred for EUS-FNA...
January 2018: Endoscopy International Open
https://www.readbyqxmd.com/read/29340932/robotic-scanning-device-for-intraoperative-thyroid-gland-endomicroscopy
#3
Haibo Wang, Shuxin Wang, Jinhua Li, Siyang Zuo
Probe-based confocal laser endomicroscopy has a high potential to be a promising tool that can provide intraoperative high-resolution in vivo morphological imaging at cellular and subcellular levels for thyroidectomy, and allow real-time assessment of tumor margins. However, the typical images acquired with this technique cover a very small area limited by the field of view of the probe, accompanied by tissue deformation and inconsistent probe-tissue contact when operated manually. In this paper, a novel compact robotic device for large area scanning has been developed...
January 16, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29286374/optical-screening-of-novel-bacteria-specific-probes-on-ex-vivo-human-lung-tissue-by-confocal-laser-endomicroscopy
#4
Bethany Mills, Ahsan R Akram, Emma Scholefield, Mark Bradley, Kevin Dhaliwal
Improving the speed and accuracy of bacterial detection is important for patient stratification and to ensure the appropriate use of antimicrobials. To achieve this goal, the development of diagnostic techniques to recognize bacterial presence in real-time at the point-of-care is required. Optical imaging for direct identification of bacteria within the host is an attractive approach. Several attempts at chemical probe design and validation have been investigated, however none have yet been successfully translated into the clinic...
November 29, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29277482/comparison-of-narrow-band-imaging-and-confocal-laser-endomicroscopy-for-the-detection-of-neoplasia-in-barrett-s-esophagus-a-meta-analysis
#5
Yi-Quan Xiong, Shu-Juan Ma, Hao-Yue Hu, Jing Ge, Li-Zhi Zhou, Shu-Ting Huo, Min Qiu, Qing Chen
AIMS: Barrett's esophagus (BE) predisposes to the development of esophageal neoplasia, including high-grade dysplasia (HGD) and esophageal adenocarcinoma (EAC). A systematic literature review and meta-analysis were performed to assess the accuracy of within-patient comparisons of narrow band imaging (NBI) and confocal laser endomicroscopy (CLE) for diagnosis of HGD/EAC in patients with BE. METHODS: The following databases were examined up to April 2016 without language restriction: PubMed, Embase, Medline, Web of Science and the Cochrane Library...
December 22, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/29273725/functional-shift-with-maintained-regenerative-potential-following-portal-vein-ligation
#6
Tibor Kovács, Domokos Máthé, András Fülöp, Katalin Jemnitz, Attila Bátai-Konczos, Zsuzsanna Veres, György Török, Dániel Sándor Veres, Ildikó Horváth, Krisztián Szigeti, László Homolya, Attila Szijártó
Selective portal vein ligation (PVL) allows the two-stage surgical resection of primarily unresectable liver tumours by generating the atrophy and hypertrophy of portally ligated (LL) and non-ligated lobes (NLL), respectively. To evaluate critically important underlying functional alterations, present study characterised in vitro and vivo liver function in male Wistar rats (n = 106; 210-250 g) before, and 24/48/72/168/336 h after PVL. Lobe weights and volumes by magnetic resonance imaging confirmed the atrophy-hypertrophy complex...
December 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29259252/image-guided-fluorescence-endomicroscopy-from-macro-to-micro-imaging-of-radiation-induced-pulmonary-fibrosis
#7
Jessica R Perez, Norma Ybarra, Frederic Chagnon, Monica Serban, Gabriel Pare, Olivier Lesur, Jan Seuntjens, Issam El Naqa
Radiation-induced pulmonary fibrosis (RIPF) is a debilitating side effect of radiation therapy (RT) of several cancers including lung and breast cancers. Current clinical methods to assess and monitor RIPF involve diagnostic computed tomography (CT) imaging, which is restricted to anatomical macroscopic changes. Confocal laser endomicroscopy (CLE) or fluorescence endomicroscopy (FE) in combination with a fibrosis-targeted fluorescent probe allows to visualize RIPF in real-time at the microscopic level. However, a major limitation of FE imaging is the lack of anatomical localization of the endomicroscope within the lung...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29251271/can-endoscopic-ultrasound-guided-needle-based-confocal-laser-endomicroscopy-replace-fine-needle-aspiration-for-pancreatic-and-mediastinal-diseases
#8
REVIEW
Jintao Guo, Manoop S Bhutani, Marc Giovannini, Zhaoshen Li, Zhendong Jin, Aiming Yang, Guoqiang Xu, Guiqi Wang, Siyu Sun
New applications of confocal laser endomicroscopy (CLE) have been developed, such as needle-based CLE (nCLE) for pancreatic masses, pancreatic cystic tumors, and lymph nodes. nCLE is feasible during endoscopic ultrasound (EUS) examination, and preliminary results are very encouraging and suggest this technology may be used in future as a useful adjunct in cases of inconclusive EUS-guided fine-needle aspiration. The aim of this paper is to give an update in this new technology and to define its place in the diagnosis of pancreatic masses and mediastinal diseases...
November 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/29186737/the-role-of-confocal-laser-endomicroscopy-in-assessing-mucosal-healing-in-patients-with-ulcerative-proctitis
#9
Cristian Gheorghe, Gabriel Becheanu, Razvan Iacob, Bogdan Cotruta, Anca Dimitriu
No abstract text is available yet for this article.
December 2017: Endoscopy
https://www.readbyqxmd.com/read/29183138/-experimental-model-for-cardiogenic-shock-with-pericardial-tamponade
#10
Gábor Bari, Szilárd Szűcs, Dániel Érces, Melinda Ugocsai, Noémi Bozsó, Dóra Balog, Mihály Boros, Gabriella Varga
INTRODUCTION: Pericardial tamponade (PT) is a life-threatening condition, with low cardiac output. The hemodynamic consequences of PT can severely affect the circulation of all tissues, including the microcirculation of the kidneys and the intestinal mucosa. Our aim was to develop a hemodynamically stable and controllable large animal model of PT to study the consequences of cardiogenic shock. METHODS: Two groups of anesthetized vietnamese minipigs (n = 6, both groups) were used...
December 2017: Magyar Sebészet
https://www.readbyqxmd.com/read/29159273/a-health-economic-evaluation-of-needle-based-confocal-laser-endomicroscopy-for-the-diagnosis-of-pancreatic-cysts
#11
Claude Le Pen, Laurent Palazzo, Bertrand Napoléon
Background and study aims:  The low sensitivity of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA), especially for the diagnosis of serous cystadenomas (SCAs), can be associated with diagnostic uncertainty that can regularly lead to unnecessary surgical procedures. Needle-based confocal laser endomicroscopy (nCLE) used with EUS-FNA improves diagnostic accuracy, helping to reduce unnecessary surgery and patient follow-up. This study was conducted to evaluate the economic benefit of EUS-FNA + nCLE...
October 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/29129041/line-scanning-confocal-microendoscope-for-nuclear-morphometry-imaging
#12
Yubo Tang, Jennifer Carns, Rebecca R Richards-Kortum
Fiber-optic endomicroscopy is a minimally invasive method to image cellular morphology in vivo. Using a coherent fiber bundle as an image relay, it allows additional imaging optics to be placed at the distal end of the fiber outside the body. In this research, we use this approach to demonstrate a compact, low-cost line-scanning confocal fluorescence microendoscope that can be constructed for <$5000. Confocal imaging is enabled without the need for mechanical scanning by synchronizing a digital light projector with the rolling shutter of a CMOS camera...
November 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29110046/-supplementary-optical-techniques-for-the-detection-of-nonmuscle-invasive-bladder-cancer
#13
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/29108979/prediction-of-clinical-outcomes-in-crohn-s-disease-by-using-confocal-laser-endomicroscopy-results-from-a-prospective-multicenter-study
#14
Gian Eugenio Tontini, Jonas Mudter, Michael Vieth, Claudia Günther, Valentina Milani, Raja Atreya, Timo Rath, Andreas Nägel, Giorgia Hatem, Giacomo Carlo Sturniolo, Maurizio Vecchi, Markus F Neurath, Peter R Galle, Andrea Buda, Helmut Neumann
BACKGROUND & AIMS: Assessment of prognostic factors in Crohn's disease (CD) patients is of pivotal importance for early intervention and "treat-to-target" strategies. Confocal Laser Endomicroscopy (CLE) enables on demand in vivo characterization of mucosal inflammatory and architectural changes during endoscopy. We prospectively assessed the value of CLE for prediction of clinical outcome parameters in CD. METHODS: Consecutive patients with CD undergoing colonoscopy were included in a multicentre study...
November 3, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29104910/implementation-of-real-time-probe-based-confocal-laser-endomicroscopy-pcle-for-differentiation-of-colorectal-polyps-during-routine-colonoscopy
#15
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/29089571/in-vivo-near-infrared-imaging-of-erbb2-expressing-breast-tumors-with-dual-axes-confocal-endomicroscopy-using-a-targeted-peptide
#16
Zhenghong Gao, Gaoming Li, Xue Li, Juan Zhou, Xiyu Duan, Jing Chen, Bishnu P Joshi, Rork Kuick, Basma Khoury, Dafydd G Thomas, Tina Fields, Michael S Sabel, Henry D Appelman, Quan Zhou, Haijun Li, Ken Kozloff, Thomas D Wang
ErbB2 expression in early breast cancer can predict tumor aggressiveness and clinical outcomes in large patient populations. Accurate assessment with physical biopsy and conventional pathology can be limited by tumor heterogeneity. We aim to demonstrate real-time optical sectioning using a near-infrared labeled ErbB2 peptide that generates tumor-specific contrast in human xenograft breast tumors in vivo. We used IRDye800CW as the fluorophore, validated performance characteristics for specific peptide binding to cells in vitro, and investigated peak peptide uptake in tumors using photoacoustic tomography...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29067583/feasibility-of-real-time-intestinal-bloodstream-evaluation-using-probe-based-confocal-laser-endomicroscopy-in-a-porcine-intestinal-ischemia-model
#17
Tsuyoshi Takahashi, Rie Nakatsuka, Hisashi Hara, Shigeyoshi Higashi, Kouji Tanaka, Yasuhiro Miyazaki, Tomoki Makino, Yukinori Kurokawa, Makoto Yamasaki, Shuji Takiguchi, Masaki Mori, Yuichiro Doki, Kiyokazu Nakajima
BACKGROUND: Intestinal ischemia can lead to fatal complications if left unrecognized during surgery. The current techniques of intraoperative microvascular assessment remain subjective. Probe-based confocal laser endomicroscopy (pCLE) has the potential to objectively evaluate microvascular blood flow in real-time setting. The present study evaluated the technical feasibility of real-time intestinal bloodstream evaluation using pCLE in a porcine intestinal ischemia model. METHODS: Seven pigs were used...
October 24, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29054075/evaluation-of-immunological-markers-of-ovine-vaginal-irritation-implications-for-preclinical-assessment-of-non-vaccine-hiv-preventive-agents
#18
Gregg N Milligan, Gracie Vargas, Kathleen L Vincent, Yong Zhu, Nigel Bourne, Massoud Motamedi
The presence of genital inflammatory responses and a compromised vaginal epithelial barrier have been linked to an increased risk of HIV acquisition. It is important to assure that application of candidate microbicides designed to limit HIV transmission will not cause these adverse events. We previously developed high resolution in vivo imaging methodologies in sheep to assess epithelial integrity following vaginal application of a model microbicide, however characterization of genital inflammation in sheep has not been previously possible...
October 13, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29034764/indeterminate-biliary-strictures-a-simplified-approach
#19
Chencheng Xie, Khalil Aloreidi, Bhavesh Patel, Timothy Ridgway, Thavam Thambi-Pillai, Gary Timmerman, Adeel Khan, Muslim Atiq
Pre-operative evaluation of biliary strictures remains challenging. The dilemma that exists is how to balance the risk of failing to detect malignancy and the potential morbidity caused by unnecessary surgery in patients with benign etiologies. With emerging novel diagnostic modalities, this study aims to assess the efficacy of diagnostic techniques and facilitate a clinical approach to indeterminate biliary strictures. Areas covered: Conventional imaging modalities are crucial in identifying the location of a stricture and are helpful for choosing further diagnostic modalities...
February 2018: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29028105/value-of-confocal-laser-endomicroscopy-in-the-diagnosis-of-vocal-cord-lesions
#20
M Goncalves, H Iro, A Dittberner, A Agaimy, C Bohr
OBJECTIVE: The aim of this study was to assess the reliability and limitations of confocal laser endomicroscopy (CLE) for diagnosing lesions of the vocal cords and differentiating malignant from non-malignant lesions. PATIENTS AND METHODS: During microlaryngoscopy, the vocal cords were scanned by probe-based CLE (pCLE: a GastroFlex probe with the Cellvizio® laser system, Mauna Technologies, Paris, France). The video recordings were analyzed and compared with the histological results...
September 2017: European Review for Medical and Pharmacological Sciences
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