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https://www.readbyqxmd.com/read/28226765/generation-of-3d-thermal-models-for-dentistry-applications
#1
Mauren Abreu de Souza, Andriy Guilherme Krefer, Gustavo Benvenutti Borba, Gustavo J Vizinoni E Silva, Ana Paula G O Franco, Humberto Remigio Gamba, Mauren Abreu de Souza, Andriy Guilherme Krefer, Gustavo Benvenutti Borba, Gustavo J Vizinoni E Silva, Ana Paula G O Franco, Humberto Remigio Gamba, Gustavo Benvenutti Borba, Andriy Guilherme Krefer, Ana Paula G O Franco, Mauren Abreu de Souza, Humberto Remigio Gamba, Gustavo J Vizinoni E Silva
There are a variety of medical imaging modalities available, although each modality focus into different aspects, for example: anatomical, physiological or geometrical information. This paper presents a new imaging modality (3D THERMO-SCAN) that combines anatomical computer tomography (CT) imaging slices, together with 2D infrared thermography images and 3D scanned shaped models of the area under study. Therefore, it is presented the 3D reconstructions involving a case study of a volunteer with bruxism. Some characteristics of bruxism are the hyperactivity of the chewing muscles, which changes the dynamics of microcirculation, also changing the correspondent skin's temperature...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226761/multisensor-data-fusion-for-enhanced-respiratory-rate-estimation-in-thermal-videos
#2
Carina B Pereira, Xinchi Yu, Vladimir Blazek, Boudewijn Venema, Steffen Leonhardt, Carina B Pereira, Xinchi Yu, Vladimir Blazek, Boudewijn Venema, Steffen Leonhardt, Xinchi Yu, Vladimir Blazek, Carina B Pereira, Boudewijn Venema, Steffen Leonhardt
Scientific studies have demonstrated that an atypical respiratory rate (RR) is frequently one of the earliest and major indicators of physiological distress. However, it is also described in the literature as "the neglected vital parameter", mainly due to shortcomings of clinical available monitoring techniques, which require attachment of sensors to the patient's body. The current paper introduces a novel approach that uses multisensor data fusion for an enhanced RR estimation in thermal videos. It considers not only the temperature variation around nostrils and mouth, but the upward and downward movement of both shoulders...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226681/thermal-analysis-of-multiple-antenna-excited-breast-model-for-breast-cancer-detection
#3
Yinan Li, Babak Fahimi, Yinan Li, Babak Fahimi, Babak Fahimi, Yinan Li
Infrared thermography (IRT), or thermal imaging has long been proposed as a novel method in early detection of breast cancer. Most of the work done was through the detection of abnormal hotspot, or asymmetries in a thermal texture map. However, the surface temperature may not appear symmetric even for a healthy breast because of variations in blood supply and individual differences. In this paper, a method that is independent of the aforementioned symmetry is proposed. The breast under detection is initially excited by a group of patch antennas...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28210555/breast-reconstruction-with-absorbable-mesh-sling-dynamic-infrared-thermography-of-skin-envelope
#4
Yoko Hashimoto, Naoki Watanabe, Takeshi Yuasa, Yoshinori Suzuki, Hiroshi Saisho
BACKGROUND: To immediate reconstruct ptosis breasts, we used polyglactin (Vicryl; Ethicon Inc., Somerville, NJ, USA) mesh as an inferolateral sling. However, Vicryl mesh is absorbable and losing function as a supporting structure. We doubt about the stability of the blood supply to the inferior part of the flap when it is in direct contact with inner implant. In this study, we examine the complications and the safety of the skin flap of this absorbable mesh sling (AMS) procedure. METHODS: The outcomes of 80 cases were examined, and the 1-year safety record of 40 cases was assessed...
February 2017: Gland Surgery
https://www.readbyqxmd.com/read/28207315/diagnosis-of-lumbosacral-diskospondylosis-in-a-bucking-bull-assisted-by-high-definition-thermal-and-nuclear-scintigraphic-imaging
#5
Marc Caldwell, Thomas Passler, Ram C Purohit, David Pascoe, Dwight F Wolfe
CASE DESCRIPTION An 8-year-old Brahman-cross bull was evaluated for left hind limb lameness of 2 months' duration. The lameness was first noticed during a rodeo bucking performance, immediately after the bull appeared to land inappropriately on the affected limb. CLINICAL FINDINGS Physical examination findings revealed left hind limb lameness, ataxia, and left-sided epaxial muscle atrophy. Palpation per rectum along the lumbar portion of the vertebral column revealed evidence of exostosis of the ventral aspect...
March 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28198742/a-reliability-study-using-a-long-wave-infrared-thermography-device-to-identify-relative-tissue-temperature-variations-of-the-body-surface-and-underlying-tissue
#6
Diane K Langemo, James G Spahn
OBJECTIVE: This study assesses the ability of the Scout (WoundVision LLC, Indianapolis, Indiana), an FDA-approved visual and thermal imaging device and software analysis tool, to provide clinicians with a reliable and reproducible way to incorporate long-wave infrared thermography and relative temperature differential into clinical wound assessment by consistently identifying control areas against which to measure wound temperature. METHODS: This laboratory-based study utilized 3 adult wound care professionals experienced in control area selection...
March 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28158005/design-and-fabrication-of-si-hdpe-hybrid-fresnel-lenses-for-infrared-imaging-systems
#7
Ahmad Rosli Abdul Manaf, Tsunetoshi Sugiyama, Jiwang Yan
In this work, novel hybrid Fresnel lenses for infrared (IR) optical applications were designed and fabricated. The Fresnel structures were replicated from an ultraprecision diamond-turned aluminum mold to an extremely thin layer (tens of microns) of high-density polyethylene polymer, which was directly bonded onto a flat single-crystal silicon wafer by press molding without using adhesives. Night mode imaging results showed that the fabricated lenses were able to visualize objects in dark fields with acceptable image quality...
January 23, 2017: Optics Express
https://www.readbyqxmd.com/read/28155011/photobiomodulation-laser-and-pulsed-electrical-field-increase-the-viability-of-the-musculocutaneous-flap-in-diabetic-rats
#8
Gabriella de Paula Marcondes Ferreira Leite, Lais Mara Siqueira das Neves, Carlos Alberto Silva, Rinaldo Roberto de Jesus Guirro, Thamires Rodrigues de Souza, Ana Karina de Souza, Sérgio Britto Garcia, Elaine Caldeira de Oliveira Guirro
The purpose of this study is to investigate the effect of pulsed electrical field (PEF) and photobiomodulation laser (PBM) on the viability of the TRAM flap in diabetic rats. Fifty Wistar rats were divided into five homogeneous groups: Group 1-control; Group 2-diabetics; Group 3-diabetics + PEF; Group 4-diabetic + laser 660 nm, 10 J/cm(2), 0.27 J; Group 5-diabetic + laser 660 nm, 140 J/cm(2), 3.9 J. The percentage of necrotic area was evaluated using software Image J®. The peripheral circulation of the flap was evaluated by infrared thermography FLIR T450sc (FLIR® Systems-Oregon USA)...
February 2, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28144561/graphene-polymer-coating-for-the-realization-of-strain-sensors
#9
Carmela Bonavolontà, Carla Aramo, Massimo Valentino, Giampiero Pepe, Sergio De Nicola, Gianfranco Carotenuto, Angela Longo, Mariano Palomba, Simone Boccardi, Carosena Meola
In this work we present a novel route to produce a graphene-based film on a polymer substrate. A transparent graphite colloidal suspension was applied to a slat of poly(methyl methacrylate) (PMMA). The good adhesion to the PMMA surface, combined with the shear stress, allows a uniform and continuous spreading of the graphite nanocrystals, resulting in a very uniform graphene multilayer coating on the substrate surface. The fabrication process is simple and yields thin coatings characterized by high optical transparency and large electrical piezoresitivity...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28139738/ionic-thermoelectric-gating-organic-transistors
#10
Dan Zhao, Simone Fabiano, Magnus Berggren, Xavier Crispin
Temperature is one of the most important environmental stimuli to record and amplify. While traditional thermoelectric materials are attractive for temperature/heat flow sensing applications, their sensitivity is limited by their low Seebeck coefficient (∼100 μV K(-1)). Here we take advantage of the large ionic thermoelectric Seebeck coefficient found in polymer electrolytes (∼10,000 μV K(-1)) to introduce the concept of ionic thermoelectric gating a low-voltage organic transistor. The temperature sensing amplification of such ionic thermoelectric-gated devices is thousands of times superior to that of a single thermoelectric leg in traditional thermopiles...
January 31, 2017: Nature Communications
https://www.readbyqxmd.com/read/28117637/use-of-fecal-glucocorticoid-and-salivary-cortisol-concentrations-as-a-measure-of-well-being-of-new-york-city-carriage-horses
#11
Sarah Mercer-Bowyer, David C Kersey, Joseph J Bertone
OBJECTIVE To use noninvasive approaches to assess stress in New York City (NYC) carriage horses during the course of their daily routine to determine whether use of these horses affected their well-being. DESIGN Prospective case control study. ANIMALS 13 (5 mares and 8 geldings) stabled working NYC carriage horses and 5 pastured (nonworking) NYC carriage horses (1 mare and 4 geldings). PROCEDURES Samples for determination of fecal glucocorticoid and salivary cortisol concentrations were collected on 3 successive days from 10, 8, and 9 working carriage horses during rest (time 1), preparation for work (time 2), and return to the stable (time 3) and at 1 hour after work (time 4)...
February 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28113498/a-method-for-accurate-modeling-of-baw-filters-at-high-power-levels
#12
Andreas Tag, Vikrant Chauhan, Christian Huck, Bernhard Bader, Dominik Karolewski, Maximilian Pitschi, Robert Weigel, Amelie Hagelauer
A novel approach for multiphysics modeling of BAW filters is presented allowing accurate and at the same time efficient modeling of BAW filters at high power levels. The approach takes the different types of losses and their spatial distribution into account in order to provide the required input for thermal simulation. The temperature distribution determined by thermal simulation is used to modify the geometry and the layer stack of each single resonator of the filter. In this way the required input for modeling of electromagnetic and acoustic behavior at high power level is generated...
October 4, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28110313/framework-for-2d-3d-image-fusion-of-infrared-thermography-with-preoperative-mri
#13
Nico Hoffmann, Florian Weidner, Peter Urban, Tobias Meyer, Christian Schnabel, Yordan Radev, Gabriele Schackert, Uwe Petersohn, Edmund Koch, Stefan Gumhold, Gerald Steiner, Matthias Kirsch
Multimodal medical image fusion combines information of one or more images in order to improve the diagnostic value. While previous applications mainly focus on merging images from computed tomography, magnetic resonance imaging (MRI), ultrasonic and single-photon emission computed tomography, we propose a novel approach for the registration and fusion of preoperative 3D MRI with intraoperative 2D infrared thermography. Image-guided neurosurgeries are based on neuronavigation systems, which further allow us track the position and orientation of arbitrary cameras...
January 23, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28099162/thermography-based-blood-flow-imaging-in-human-skin-of-the-hands-and-feet-a-spectral-filtering-approach
#14
A A Sagaidachnyi, A V Fomin, D A Usanov, A V Skripal
The determination of the relationship between skin blood flow and skin temperature dynamics is the main problem in thermography-based blood flow imaging. Oscillations in skin blood flow are the source of thermal waves propagating from micro-vessels toward the skin's surface, as assumed in this study. This hypothesis allows us to use equations for the attenuation and dispersion of thermal waves for converting the temperature signal into the blood flow signal, and vice versa. We developed a spectral filtering approach (SFA), which is a new technique for thermography-based blood flow imaging...
January 18, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28096610/investigation-of-body-and-udder-skin-surface-temperature-differentials-as-an-early-indicator-of-mastitis-in-holstein-friesian-crossbred-cows-using-digital-infrared-thermography-technique
#15
M Sathiyabarathi, S Jeyakumar, A Manimaran, Heartwin A Pushpadass, M Sivaram, K P Ramesha, D N Das, Mukund A Kataktalware, G Jayaprakash, Tapas Kumar Patbandha
AIM: The objective of this study was to investigate the ability of infrared thermography (IRT) technique and its interrelationship with conventional mastitis indicators for the early detection of mastitis in Holstein Friesian (HF) crossbred cows. MATERIALS AND METHODS: A total of 76 quarters of lactating HF crossbred (Bos indicus × Bos taurus) cows (n=19) were monitored for body temperature (i.e., eye temperature) and udder skin surface temperature (USST) before milking using forward-looking infrared (FLIR) i5 camera...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28093314/remote-sensing-of-multiple-vital-signs-using-a-cmos-camera-equipped-infrared-thermography-system-and-its-clinical-application-in-rapidly-screening-patients-with-suspected-infectious-diseases
#16
Guanghao Sun, Yosuke Nakayama, Sumiyakhand Dagdanpurev, Shigeto Abe, Hidekazu Nishimura, Tetsuo Kirimoto, Takemi Matsui
BACKGROUND: Infrared thermography (IRT) is used to screen febrile passengers at international airports, but it suffers from low sensitivity. This study explored the application of a combined visible and thermal image processing approach that uses a CMOS camera equipped with IRT to remotely sense multiple vital signs and screen patients with suspected infectious diseases. METHODS: An IRT system that produced visible and thermal images was used for image acquisition...
February 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28062180/determination-of-cryothermal-injury-thresholds-in-tissues-impacted-by-cardiac-cryoablation
#17
Ryan P Goff, Stephen G Quallich, Robert A Buechler, John C Bischof, Paul A Iaizzo
Despite widespread clinical use of cryoablation, there remain questions regarding dosing and treatment times which may affect efficacy and collateral injury. Dosing and treatment times are directly related to the degree of cooling necessary for effective lesion formation. Human and swine atrial, ventricular, and lung tissues were ablated using two cryoablation systems with concurrent infrared thermography. Post freeze-thaw samples were cultured and stained to differentiate viable and non-viable tissue. Matlab code correlated viability staining to applied freeze-thaw thermal cycles, to determine injury thresholds...
January 3, 2017: Cryobiology
https://www.readbyqxmd.com/read/28032564/wearing-lead-aprons-in-surgical-operating-rooms-ergonomic-injuries-evidenced-by-infrared-thermography
#18
Dominique Alexandre, Marc Prieto, Fabien Beaumont, Redha Taiar, Guillaume Polidori
BACKGROUND: The purpose of this study is to quantify the impact of the weight of radiation protection lead aprons on the discomfort and the fatigue of the medical staff within an operating room of interventional gastroenterology. To quantify this fatigue, we analyzed variations of the physiological parameters, including heart rate, blood pressure, and cutaneous temperature; we compared two situations: the first within the classic endoscopy department (without apron) and the second within the operating room with apron...
November 2, 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/28032379/changes-in-cardiovascular-performance-biochemistry-gastric-motility-and-muscle-temperature-induced-by-acute-exercise-on-a-treadmill-in-healthy-military-dogs
#19
R W Queiroz, V L Silva, D R Rocha, D S Costa, S H N Turco, M T B Silva, A A Santos, M B L Oliveira, A S R Pereira, R C Palheta-Junior
Changes in physiological parameters that are induced by acute exercise on a treadmill in healthy military dogs have not been thoroughly investigated, especially with regard to age. This study investigated the effects of acute exercise on a treadmill on cardiovascular function, biochemical parameters and gastric antral motility in military dogs. Thermography was used to assess variations in superficial hindlimb muscle temperature. Nine healthy dogs were distributed into three groups according to their age (Group I: 25 ± 7 months; Group II: 51 ± 12 months; Group III: 95 ± 10 months) and sequentially subjected to running exercise on a treadmill for 12 min (3...
December 29, 2016: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28010815/an-assessment-of-skin-temperature-gradients-in-a-tropical-primate-using-infrared-thermography-and-subcutaneous-implants
#20
Cynthia L Thompson, Caleb Scheidel, Kenneth E Glander, Susan H Williams, Christopher J Vinyard
Infrared thermography has become a useful tool to assess surface temperatures of animals for thermoregulatory research. However, surface temperatures are an endpoint along the body's core-shell temperature gradient. Skin and fur are the peripheral tissues most exposed to ambient thermal conditions and are known to serve as thermosensors that initiate thermoregulatory responses. Yet relatively little is known about how surface temperatures of wild mammals measured by infrared thermography relate to subcutaneous temperatures...
January 2017: Journal of Thermal Biology
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