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Infrared Imaging

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https://www.readbyqxmd.com/read/28549104/near-infrared-image-guided-lymphatic-mapping-in-minimally-invasive-oesophagectomy-of-distal-oesophageal-cancer
#1
Olli Helminen, Johanna Mrena, Eero Sihvo
OBJECTIVES: We aimed to assess the potential of near-infrared (NIR) imaging during minimally invasive oesophagectomy in patients with distal oesophageal cancer for detection of nodal metastases inside and outside the standard en bloc surgical field. METHODS: We enrolled 6 patients diagnosed with distal oesophageal cancer for intraoperative lymphatic mapping with NIR imaging. Indocyanine green dye was injected endoscopically in 8 corners of the primary tumour at the start of the operation...
May 26, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28548048/reliable-passivation-of-black-phosphorus-by-thin-hybrid-coating
#2
Sampath Gamage, Alireza Fali, Neda Aghamiri, Lingming Yang, Pei-De Ye, Yohannes Abate
Black phosphorus (BP) possesses several extraordinary physical properties, which include in-plane anisotropy, thickness dependent direct bandgap and high carrier mobility. These physical properties make BP highly desirable from the point of view of fundamental science and modern optoelectronics applications. The excitement about this material has always been accompanied by unreserved skepticism due to its extraordinary degradation under ambient conditions. Here we show ambient degradation of exfoliated BP can be effectively suppressed using thin layer of hybrid MOCVD coating of BN followed by ALD coating of Al2O3...
May 26, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28546809/comparison-of-brain-activation-during-motor-imagery-and-motor-movement-using-fnirs
#3
Alyssa M Batula, Jesse A Mark, Youngmoo E Kim, Hasan Ayaz
Motor-activity-related mental tasks are widely adopted for brain-computer interfaces (BCIs) as they are a natural extension of movement intention, requiring no training to evoke brain activity. The ideal BCI aims to eliminate neuromuscular movement, making motor imagery tasks, or imagined actions with no muscle movement, good candidates. This study explores cortical activation differences between motor imagery and motor execution for both upper and lower limbs using functional near-infrared spectroscopy (fNIRS)...
2017: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/28546207/jupiter-s-magnetosphere-and-aurorae-observed-by-the-juno-spacecraft-during-its-first-polar-orbits
#4
J E P Connerney, A Adriani, F Allegrini, F Bagenal, S J Bolton, B Bonfond, S W H Cowley, J-C Gerard, G R Gladstone, D Grodent, G Hospodarsky, J L Jorgensen, W S Kurth, S M Levin, B Mauk, D J McComas, A Mura, C Paranicas, E J Smith, R M Thorne, P Valek, J Waite
The Juno spacecraft acquired direct observations of the jovian magnetosphere and auroral emissions from a vantage point above the poles. Juno's capture orbit spanned the jovian magnetosphere from bow shock to the planet, providing magnetic field, charged particle, and wave phenomena context for Juno's passage over the poles and traverse of Jupiter's hazardous inner radiation belts. Juno's energetic particle and plasma detectors measured electrons precipitating in the polar regions, exciting intense aurorae, observed simultaneously by the ultraviolet and infrared imaging spectrographs...
May 26, 2017: Science
https://www.readbyqxmd.com/read/28546206/jupiter-s-interior-and-deep-atmosphere-the-initial-pole-to-pole-passes-with-the-juno-spacecraft
#5
S J Bolton, A Adriani, V Adumitroaie, M Allison, J Anderson, S Atreya, J Bloxham, S Brown, J E P Connerney, E DeJong, W Folkner, D Gautier, D Grassi, S Gulkis, T Guillot, C Hansen, W B Hubbard, L Iess, A Ingersoll, M Janssen, J Jorgensen, Y Kaspi, S M Levin, C Li, J Lunine, Y Miguel, A Mura, G Orton, T Owen, M Ravine, E Smith, P Steffes, E Stone, D Stevenson, R Thorne, J Waite, D Durante, R W Ebert, T K Greathouse, V Hue, M Parisi, J R Szalay, R Wilson
On 27 August 2016, the Juno spacecraft acquired science observations of Jupiter, passing less than 5000 kilometers above the equatorial cloud tops. Images of Jupiter's poles show a chaotic scene, unlike Saturn's poles. Microwave sounding reveals weather features at pressures deeper than 100 bars, dominated by an ammonia-rich, narrow low-latitude plume resembling a deeper, wider version of Earth's Hadley cell. Near-infrared mapping reveals the relative humidity within prominent downwelling regions. Juno's measured gravity field differs substantially from the last available estimate and is one order of magnitude more precise...
May 26, 2017: Science
https://www.readbyqxmd.com/read/28545365/role-of-infrared-spectroscopy-and-imaging-in-cancer-diagnosis
#6
Saroj Kumar, Alagiri Srinivasan, Fredrik Nikolajeff
FTIR imaging has been used to diagnose and differentiate the molecular differences between normal and diseased tissues. The differences correspond to the distribution and structure of lipids, proteins, nucleic acids as well as other metabolites. These differences depended on the type and the grade of cancer. The sensitivity of chemotherapy drugs on individual specific was also discussed. Here, we emphasize that FTIR spectroscopy and imaging can be considered as a promising technique and will find its place on the detection of this dreadful disease because of high sensitivity, accuracy and inexpensive technique...
May 23, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28542311/18f-fdg-pet-ct-based-early-treatment-response-evaluation-of-nanoparticle-assisted-photothermal-cancer-therapy
#7
Kamilla Norregaard, Jesper T Jørgensen, Marina Simón, Fredrik Melander, Lotte K Kristensen, Pól M Bendix, Thomas L Andresen, Lene B Oddershede, Andreas Kjaer
Within the field of nanoparticle-assisted photothermal cancer therapy, focus has mostly been on developing novel heat-generating nanoparticles with the right optical and dimensional properties. Comparison and evaluation of their performance in tumor-bearing animals are commonly assessed by changes in tumor volume; however, this is usually a late-occurring event. This study implements 2-deoxy-2-[F-18]fluoro-D-glucose positron emission tomography imaging to perform early evaluation of the treatment outcome of photothermal therapy...
2017: PloS One
https://www.readbyqxmd.com/read/28541897/capacitive-micro-machined-ultrasound-transducers-for-interstitial-high-intensity-ultrasound-therapies
#8
W Apoutou N'Djin, Bjoern Gerold, Jeremy Vion, Michael Canney, An Nguyen-Dinh, Alexandre Carpentier, Jean-Yves Chapelon
Capacitive Micro-machined Ultrasound Transducers (CMUTs) exhibit several potential advantages over conventional piezo technologies for use in therapeutic ultrasound devices, including: ease of miniaturization and integration with electronics, broad bandwidth (>several MHz), and compatibility with magnetic resonance imaging (MRI). In this work, the electro-acoustic performance of CMUTs designed for interstitial high intensity contact ultrasound (HICU) applications was evaluated and the feasibility of generating ultrasound-induced heating and thermal destruction of biological tissues was studied...
May 24, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28541202/linear-support-tensor-machine-with-lsk-channels-pedestrian-detection-in-thermal-infrared-images
#9
Sujoy Kumar Biswas, Peyman Milanfar
Pedestrian detection in thermal infrared images poses unique challenges because of the low resolution and noisy nature of the image. Here we propose a mid-level attribute in the form of the multidimensional template, or tensor, using Local Steering Kernel (LSK) as low-level descriptors for detecting pedestrians in far infrared images. LSK is specifically designed to deal with intrinsic image noise and pixel level uncertainty by capturing local image geometry succinctly instead of collecting local orientation statistics (e...
May 18, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28540184/detection-of-intramyocardially-injected-dir-labeled-mesenchymal-stem-cells-by-optical-and-optoacoustic-tomography
#10
Markus T Berninger, Pouyan Mohajerani, Moritz Wildgruber, Nicolas Beziere, Melanie A Kimm, Xiaopeng Ma, Bernhard Haller, Megan J Fleming, Stephan Vogt, Martina Anton, Andreas B Imhoff, Vasilis Ntziachristos, Reinhard Meier, Tobias D Henning
The distribution of intramyocardially injected rabbit MSCs, labeled with the near-infrared dye 1,1'-dioctadecyl-3,3,3',3'-tetramethylindotricarbo-cyanine-iodide (DiR) using hybrid Fluorescence Molecular Tomography-X-ray Computed Tomography (FMT-XCT) and Multispectral Optoacoustic Tomography (MSOT) imaging technologies, was investigated. Viability and induction of apoptosis of DiR labeled MSCs were assessed by XTT- and Caspase-3/-7-testing in vitro. 2 × 10(6), 2 × 10(5) and 2 × 10(4) MSCs labeled with 5 and 10 μg DiR/ml were injected into fresh frozen rabbit hearts...
June 2017: Photoacoustics
https://www.readbyqxmd.com/read/28538654/a-monitoring-system-for-laying-hens-that-uses-a-detection-sensor-based-on-infrared-technology-and-image-pattern-recognition
#11
Mauro Zaninelli, Veronica Redaelli, Fabio Luzi, Valentino Bontempo, Vittorio Dell'Orto, Giovanni Savoini
In Italy, organic egg production farms use free-range housing systems with a big outdoor area and a flock of no more than 500 hens. With additional devices and/or farming procedures, the whole flock could be forced to stay in the outdoor area for a limited time of the day. As a consequence, ozone treatments of housing areas could be performed in order to reduce the levels of atmospheric ammonia and bacterial load without risks, due by its toxicity, both for hens and workers. However, an automatic monitoring system, and a sensor able to detect the presence of animals, would be necessary...
May 24, 2017: Sensors
https://www.readbyqxmd.com/read/28536738/selective-targeted-delivery-of-doxorubicin-via-conjugating-to-anti-cd24-antibody-results-in-enhanced-antitumor-potency-for-hepatocellular-carcinoma-both-in-vitro-and-in-vivo
#12
Zhaoxiong Ma, Hua He, Fumou Sun, Yao Xu, Xuequn Huang, Yuexing Ma, Hong Zhao, Yang Wang, Min Wang, Juan Zhang
PURPOSE: Antibody-drug conjugates (ADCs) represent a promising therapeutic approach for clinical application. Cluster of differentiation 24 (CD24) is over-expressed in several human malignancies, especially in hepatocellular carcinoma (HCC). We aimed to develop a new class of CD24-targeted ADCs for HCC. METHODS: DOX was conjugated with G7mAb by a heterobifunctional cross-linker GMBS (N-[gamma-maleimido butyryloxy] succinimide ester) and further analyzed using HPLC...
May 23, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28536662/identification-of-abnormal-biliary-anatomy-utilizing-real-time-near-infrared-cholangiography-a-report-of-two-cases
#13
Joseph Bozzay, Diego Vicente, Elliot M Jessie, Carlos J Rodriguez
Biliary duct anomalies are commonly encountered during laparoscopic cholecystectomy. Advancements in the field of surgery allow for enhanced intraoperative detection of these abnormalities. Fluorophore injection and near-infrared (NIR) imaging can provide real-time intraoperative anatomic feedback without intraoperative delays and ionizing radiation. This report details two cases where the PINPOINT Endoscopic Fluorescence Imaging System (NOVADAQ, Ontario, Canada) was used to identify anomalies of the biliary tree and guide operative decision-making...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28536487/current-status-and-challenges-in-sentinel-node-navigation-surgery-for-early-gastric-cancer
#14
Bang Wool Eom, Young-Il Kim, Hong Man Yoon, Soo-Jeong Cho, Jong Yeul Lee, Chan Gyoo Kim, Soo Jin Kim, Ji Yoon Rho, Seok Ki Kim, Myeong-Cherl Kook, Young-Woo Kim, Keun Won Ryu
Although a number of feasibility studies for sentinel node (SN) concepts in gastric cancer have been conducted since 2000, there remains a debate regarding detailed detection techniques and oncological safety. Two important multicenter phase II clinical trials were performed in Japan that used different methods and reached different conclusions; one confirmed acceptable results with a false-negative rate of 7%, and the other showed an unacceptably high false-negative rate of 46.4%. The Sentinel Node Oriented Tailored Approach (SENORITA) trial is a multicenter randomized controlled phase III trial being performed in Korea...
April 2017: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/28534816/roi-based-on-board-compression-for-hyperspectral-remote-sensing-images-on-gpu
#15
Rossella Giordano, Pietro Guccione
In recent years, hyperspectral sensors for Earth remote sensing have become very popular. Such systems are able to provide the user with images having both spectral and spatial information. The current hyperspectral spaceborne sensors are able to capture large areas with increased spatial and spectral resolution. For this reason, the volume of acquired data needs to be reduced on board in order to avoid a low orbital duty cycle due to limited storage space. Recently, literature has focused the attention on efficient ways for on-board data compression...
May 19, 2017: Sensors
https://www.readbyqxmd.com/read/28534298/formulation-and-in-vitro-characterization-of-bioactive-mesoporous-silica-with-doxorubicin-and-metronidazole-intended-for-bone-treatment-and-regeneration
#16
Katarzyna Czarnobaj, Magdalena Prokopowicz, Wiesław Sawicki
The purpose of this study was to evaluate the surface mineralization activity and in vitro drug behavior potential of two forms of mesoporous silica: powder and granulate. Ordered mesoporous SiO2 powder was synthesized by surfactant-assisted sol-gel process using tetraethoxysilane as a silica precursor and hexadecyltrimethylammonium bromide as the structure-directing agent. The granulate was prepared using silica powder and ethyl cellulose as a binding agent. Metronidazole (MT)-an anti-inflammatory substance and doxorubicin hydrochloride (ChD)-an anti-cancer drug were chosen as drug models for delivery studies...
May 22, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28532118/facile-synthesis-of-polymeric-fluorescent-organic-nanoparticles-based-on-the-self-polymerization-of-dopamine-for-biological-imaging
#17
Yingge Shi, Ruming Jiang, Meiying Liu, Lihua Fu, Guangjian Zeng, Qing Wan, Liucheng Mao, Fengjie Deng, Xiaoyong Zhang, Yen Wei
Polymeric fluorescent organic nanoparticles (polymer-FONs) have raised considerable research attention for biomedical applications owing to their advantages as compared with fluorescent inorganic nanoparticles and small organic molecules. In this study, we presented an efficient, facile and environment-friendly strategy to produce polymer-FONs, which relied on the self-polymerization of dopamine and polyethyleneimine (PEI) in rather mild conditions. To obtain the final polymer-FONs, aldehyde group-containing copolymers (named as poly(UA-co-PEGMA)) were synthesized by reversible addition-fragmentation chain-transfer polymerization using polyethylene glycol methyl ether methacrylate (PEGMA) and 1-undecen-10-al (UA) as monomers...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532043/microarc-oxidation-discharge-types-and-bio-properties-of-the-coating-synthesized-on-zirconium
#18
Sezgin Cengiz, Yunus Azakli, Mehmet Tarakci, Lia Stanciu, Yucel Gencer
This study is an attempt for gaining a better understanding on relationship between microarc oxidation (MAO) coating discharge types and bioactivity of an oxide-based coating synthesized on a Zr substrate. The discharge types and the coating growth mechanism were identified by the examination of the real cross-section image of the coating microstructure. The coating was conducted by using MAO in an electrolyte containing Na2SiO3, Ca(CH3COO)2 and C3H7Na2O6P, for different durations of 2.5, 5, 15, and 30mins...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532029/surfactin-loaded-polyvinyl-alcohol-pva-nanofibers-alters-adhesion-of-listeria-monocytogenes-to-polystyrene
#19
J J Ahire, D D Robertson, A J van Reenen, L M T Dicks
Surfactin-loaded polyvinyl alcohol (PVA) nanofibers were spun using gravity electrospinning. Scanning electron microscopy (SEM) images showed that nanofibers spun with surfactin are free from bead formation and uniform in diameter. The average nanofiber diameters were decreased (273±39nm, 259±39nm and 217±33nm) with increasing levels of surfactin (0.5, 1.0 and 1.5%, w/v) into PVA (10%, w/v). The 10% (w/v) PVA had average fiber diameter of 303±33nm. Atomic force microscopy (AFM) analysis showed that fibers spun with surfactin are not smooth as PVA fibers...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531282/near-infrared-spectroscopy-derived-lipid-core-burden-index-predicts-adverse-cardiovascular-outcome-in-patients-with-coronary-artery-disease-during-long-term-follow-up
#20
Anne-Sophie Schuurman, Maxime Vroegindewey, Isabella Kardys, Rohit M Oemrawsingh, Jin M Cheng, Sanneke de Boer, Hector M Garcia-Garcia, Robert-Jan van Geuns, Evelyn S Regar, Joost Daemen, Nicolas M van Mieghem, Patrick W Serruys, Eric Boersma, K Martijn Akkerhuis
Aims: Near-infrared spectroscopy (NIRS) is able to quantify cholesterol within coronary arteries by the lipid core burden index (LCBI). We studied the prognostic value of NIRS-derived LCBI in patients with coronary artery disease (CAD) for adverse cardiac outcome during long-term follow-up. Methods and results: During 2009-2013, NIRS was performed in a non-culprit artery of 275 patients undergoing coronary angiography for acute coronary syndrome (ACS) or stable angina...
May 20, 2017: European Heart Journal
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