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infrared thermography

Chunhe Yang, Gan Li, Xiaojun Zhang, Xianhong Gu
The objectives of the research reported in this Research Communication were to compare the variation of hind quarter skin surface temperature pre- and post- milking in dairy cows and to determine the optimal time to capture images by infrared thermography for improving the sensitivity and specificity of mastitis detection in dairy cows. Hind quarter infrared images of 102 Holstein dairy cows were captured from the caudal view by an infrared camera pre-milking and post-milking. The udder skin surface temperature was measured with the help of the image processing software...
May 2018: Journal of Dairy Research
Nadine Hochhausen, Carina Barbosa Pereira, Steffen Leonhardt, Rolf Rossaint, Michael Czaplik
The post-anesthesia care unit (PACU) is the central hub for recovery after surgery, especially when the surgery is performed under general anesthesia. Aside from clinical aspects, respiratory impairment is one of the major causes of morbidity and affected recovery in the PACU and should therefore be monitored. In previous studies, infrared thermography was applied to assess the breathing rate (BR) of healthy volunteers. Here, the transferability of published methods for postoperative patients in the PACU was examined...
May 18, 2018: Sensors
Stéphane Derruau, Yohann Renard, Hervé Pron, Redha Taiar, Ellie Abdi, Guillaume Polidori, Sandrine Lorimier
Hidradenitis suppurativa (HS) is a chronic, inflammatory, and recurrent skin disease. Surgical excision of wounds appears to be the only curative treatment for the prevention of recurrence of moderate to severe stages. Magnetic resonance imaging (MRI) is a standard reference examination for the detection of HS peri-anal inflammatory fistula. In this case study, the use of real-time medical infrared thermography, in combination with MRI as appropriate imaging, is proposed. The aim is to assist surgeons in the pre- and peri-surgical management of severe perianal hidradenitis suppurativa with the intent to ensure that all diseased lesions were removed during surgery and therefore to limit recurrence...
May 12, 2018: Photodiagnosis and Photodynamic Therapy
Carina Barbosa Pereira, Michael Czaplik, Vladimir Blazek, Steffen Leonhardt, Daniel Teichmann
Heart rate (HR) and respiratory rate (RR) are important parameters for patient assessment. However, current measurement techniques require attachment of sensors to the patient’s body, often leading to discomfort, stress and even pain. A new algorithm is presented for monitoring both HR and RR using thermal imaging. The cyclical ejection of blood flow from the heart to the head (through carotid arteries and thoracic aorta) leads to periodic movements of the head; these vertical movements are used to assess HR...
May 13, 2018: Sensors
Peter Vaupel, Helmut Piazena, Werner Müller, Markus Notter
Thermography-controlled, water-filtered infrared-A (wIRA) is a novel, effective and approved heating technique listed in the ESHO quality assurance guidelines for superficial hyperthermia clinical trials (2017). In order to assess the special features and the potential of wIRA-hyperthermia (wIRA-HT), detailed and updated information about its physical and photobiological background is presented. wIRA allows for (a) application of high irradiances without skin pain and acute grade 2-4 skin toxicities, (b) prolonged, therapeutically relevant exposure times using high irradiances (150-200 mW/cm2 ) and (c) faster and deeper heat extension within tissues...
May 10, 2018: International Journal of Hyperthermia
Runze Tang, Tonglai Zhang, Yongpeng Chen, Hao Liang, Bingyang Li, Zunning Zhou
Effective shielding area is a crucial indicator for the evaluation of the infrared smoke-obscuring effectiveness on the battlefield. The conventional methods for assessing the shielding area of the smoke screen are time-consuming and labor intensive, in addition to lacking precision. Therefore, an efficient and convincing technique for testing the effective shielding area of the smoke screen has great potential benefits in the smoke screen applications in the field trial. In this study, a thermal infrared sensor with a mid-wavelength infrared (MWIR) range of 3 to 5 μm was first used to capture the target scene images through clear as well as obscuring smoke, at regular intervals...
May 6, 2018: Sensors
Hélène Chotard, Stephanos Ioannou, Marina Davila-Ross
Facial thermography has enabled researchers to noninvasively and continuously measure the changes of a range of emotional states in humans. The present work used this novel technology to study the effect of positive and negative emotions in nonhuman primates by focusing on four facial areas (the peri-orbital area, the nose bridge, the nose tip, and the upper lip). Monkeys and apes were examined for positive emotions (during interactions with toys and during tickling) and for negative emotions (during food delay and teasing)...
May 1, 2018: American Journal of Primatology
Alexander Melnikov, Liangjie Chen, Diego Ramirez Venegas, Koneswaran Sivagurunathan, Qiming Sun, Andreas Mandelis, Ignacio Rojas Rodriguez
Single-Frequency Thermal Wave Radar Imaging (SF-TWRI) was introduced and used to obtain quantitative thickness images of coatings on an aluminum block and on polyetherketone, and to image blind subsurface holes in a steel block. In SF-TWR, the starting and ending frequencies of a linear frequency modulation sweep are chosen to coincide. Using the highest available camera frame rate, SF-TWRI leads to a higher number of sampled points along the modulation waveform than conventional lock-in thermography imaging because it is not limited by conventional undersampling at high frequencies due to camera frame-rate limitations...
April 2018: Review of Scientific Instruments
Yi-Chun Lin, Siobhan Mullan, David C J Main
Lameness is one of the most serious economic and welfare issues in the dairy industry. Early detection of lameness can be difficult, but provision of early treatment is crucial. Previous studies have used infrared thermography to show that increased foot temperature (FT) is associated with lameness and foot lesions. However, poor accuracy has limited the management application potential. This study analysed ambient-temperature (AT)-adjusted foot-surface temperatures and temperature differences between the hind feet of individual cows to enhance lameness detection...
April 29, 2018: Veterinary Medicine and Science
Paula F Zermoglio, Marcela K Castelo, Claudio R Lazzari
The increase in body temperature over that of the environment has been frequently reported in insects, in particular in relation with flight activity. Scarab beetles of the genus Cyclocephala living in tropical areas are known to exploit the heat produced by thermogenic plants, also producing heat by endothermy. Here, we report the first case of endothermy in a species of this genus living in a temperate region, Cyclocephala signaticollis. We characterised the phenomenon in this beetle using infrared thermography and exposing them to different thermal conditions...
April 20, 2018: Journal of Insect Physiology
R O Moe, J Bohlin, A Flø, G Vasdal, H Erlandsen, E Guneriussen, E C Sjökvist, S M Stubsjøen
Footpad dermatitis is a condition that causes lesions on the plantar surface of the footpads in growing turkeys. Potential inflammatory processes and pain associated with increasing severity of footpad dermatitis raise animal welfare concerns. This study investigated whether the temperature of the plantar surface of the foot (the footpads and the entire plantar foot including interdigital membranes) assessed with infrared thermography reflects severity of mild footpad dermatitis as assessed with a Visual Analogue Scale in 80 turkey toms at 10 weeks of age...
April 17, 2018: Poultry Science
Natália C M Silva, Hirlaine A Castro, Leonardo C Carvalho, Érika C L Chaves, Ludmila O Ruela, Denise H Iunes
Objective: The purpose of this study was to evaluate the intraexaminer and interexaminer reliability of image assessment of infrared thermography of the plantar surface of people with diabetes mellitus. Methods: Fifty-one participants with diabetes were included. The interexaminer reliability (test) consisted of measuring the temperature of the plantar surface by 2 evaluators who separately performed the analysis of thermographic images. The intraexaminer reliability (retest) consisted of the revaluation of the images by a single evaluator 10 days after the first analysis...
March 2018: Journal of Chiropractic Medicine
Boris G Vainer
A search for robust noninvasive methods permitting to discern the respiration subtle peculiarities in mammals is a topical issue. A novel approach called "sorption-enhanced infrared thermography" (SEIRT), helping to solve this problem, is described. Its benefits spring from the integration of the infrared thermography (IRT) and chemical physics (phase transition heat release/absorption) within a single method. The SEIRT opportunities were verified in the investigation of 42 humans, 49 rats and 4 minipigs whose breathing waveforms were revealed to the last detail...
April 4, 2018: Annals of Biomedical Engineering
Jonathan P Robson, Pavlo Kokhanenko, Jean K Marshall, Anthony R Phillips, Jan van der Linden
Tissue perfusion during surgery is important in reducing surgical site infections and promoting healing. This study aimed to determine if insufflation of the open abdomen with heated, humidified (HH) carbon dioxide (CO2) increased visceral tissue perfusion and core body temperature during open abdominal surgery in a rodent model. Using two different rodent models of open abdominal surgery, visceral perfusion and core temperature were measured. Visceral perfusion was investigated using a repeated measures crossover experiment with rodents receiving the same sequence of two alternating treatments: exposure to ambient air (no insufflation) and insufflation with HH CO2...
2018: PloS One
David Rodriguez Sanz, Marta Elena Losa Iglesias, Ricardo Becerro de Bengoa Vallejo, Patricia Palomo Lopez, Hector Beltran Alacreu, Cesar Calvo Lobo, Emmanuel Navarro Flores, Daniel Lopez Lopez
OBJECTIVES: To check how a thermal-IR camera can check skin temperature in Gastrocnemius-soleus Equinus condition and Non-Gastrocnemius-Soleus condition in youth soccer players and thus detect association between the extensibility of the triceps-surae (with Gastrocnemius-Soleus Equinus and Non-Gastrocnemius-Soleus Equinus) and the muscle temperature pattern. DESIGN: A Cross Sectional Study Secundary level of care. METHODS: Sample from an elite soccer academy in Madrid (Spain) 35 healthy male subjects (youth soccer-players) age 12...
March 30, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
Fábio Marcon Alfieri, Linamara Rizzo Battistella
BACKGROUND: Thermography is a safe, painless, and efficient method for checking the temperature of the skin. OBJECTIVE: Was to assess the pattern of skin temperature of healthy men, as well as to verify the reproducibility of the method. METHODS: This cross-sectional observational study was conducted with 30 men evaluated by thermography in two moments by using an infrared camera (FLIR +T650SC®). The skin temperature of 24 regions of interest (ROI) was measured...
March 16, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
Jan Maerten Smit, Vera L Negenborn, Sanne M Jansen, Mariëlle E H Jaspers, Ralph de Vries, Martijn W Heymans, Hay A H Winters, Ton G van Leeuwen, Margriet G Mullender, Nicole M A Krekel
BACKGROUND: Free flap survival relies on adequate tissue perfusion. We aim to give an overview of the available literature of all objective methods to intraoperatively assess free flap tissue perfusion, and the effects on (partial) flap loss. METHODS: A systematic review and meta-analysis according to the PRISMA guidelines was performed (PubMed, Cochrane Library, Embase) regarding English language articles. Meta-analyses were performed by pooling means and slopes using random-effect models...
March 25, 2018: Microsurgery
C Magalhaes, R Vardasca, J Mendes
BACKGROUND: Infrared thermal imaging captures the infrared radiation emitted by the skin surface. The thermograms contain valuable information, since the temperature distribution can be used to characterize physiological anomalies. Thus, the use of infrared thermal imaging (IRT) has been studied as a possible medical tool to aid in the diagnosis of skin oncological lesions. The aim of this review is to assess the current state of the applications of IRT in skin neoplasm identification and characterization...
March 25, 2018: Skin Research and Technology
Melissa N Hempstead, Joseph R Waas, Mairi Stewart, Vanessa M Cave, Mhairi A Sutherland
We evaluated alternatives to cautery disbudding of goat kids using physiological measures of immediate and longer-term pain. Fifty Saanen doe kids were randomly assigned to 1 of 5 treatments (n = 10/treatment): (1) cautery disbudding (CAUT), (2) caustic paste disbudding (CASP), (3) liquid nitrogen disbudding (CRYO), (4) clove oil injected into the horn bud (CLOV), or (5) sham disbudding (SHAM). Serum cortisol and haptoglobin concentrations were measured from blood samples collected immediately before treatment (baseline) and at 15, 30, 60, and 120 min and then again at 6 and 24 h post-treatment...
March 21, 2018: Journal of Dairy Science
Shih-Jie Lin, Fu-Chun Chang, Tsan-Wen Huang, Kuo-Ti Peng, Hsin Nung Shih, Mel S Lee
The risk of surgical site infections (SSIs) after total knee arthroplasty (TKA) can never be eliminated. Antimicrobial sutures containing triclosan have been used to decrease SSIs, but whether triclosan-coated sutures are effective with TKA is unclear. Between 2011 and 2012, 102 patients randomly assigned to a triclosan or a control group were prospectively assessed. The incidence of SSI within 3 months of surgery, length of hospital stay, pain scale, functional scores, wound condition, and serum inflammatory markers during hospitalization and within 3 months postoperatively were compared...
2018: BioMed Research International
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