scholarly journals The Use of Thermal Imaging in the Evaluation of Temperature Effects of Radiotherapy in Patients after Mastectomy—First Study

Sensors ◽  
2021 ◽  
Vol 21 (21) ◽  
pp. 7068
Author(s):  
Agnieszka Baic ◽  
Dominika Plaza ◽  
Barbara Lange ◽  
Marta Reudelsdorf-Ullmann ◽  
Łukasz Michalecki ◽  
...  
Keyword(s):  
Skin Temperature ◽  
Thermal Imaging ◽  
Temperature Effects ◽  
Treatment Temperature ◽  
Advanced Stage ◽  
Temperature Changes ◽  
Imaging Camera ◽  
Temperature Parameter ◽  
Quantitative Analyses ◽  
The Relationship

The aim of the study was to evaluate the temperature parameter of the breast area in patients undergoing radiotherapy at various intervals. The relationship between temperature changes on the patient’s skin and the time after the end of radiotherapy was studied. Measurements with a thermal imaging camera were performed in a group of twelve volunteers. Six of them were healthy women who did not have thermal asymmetry between the breasts, whereas six were diagnosed with breast cancer and underwent mastectomy due to the advanced stage of the disease. The patients were qualified for radiation therapy. Thermographic examinations were performed before treatment, two months later and then six months after the end of the treatment. Temperature differences between the healthy breasts and the treated areas were assessed. Additionally, the correlation between a patient’s skin temperature changes and the time after the end of radiotherapy was analyzed. The highest skin temperature increase (1.47 °C) was observed 6 months after the end of RT compared to the measurement before treatment. It seems that thermovision may bring a new tool for quantitative analyses of the temperature effects of radiotherapy.

Validity of a Tympanic Thermometer and Thermal Imaging Camera for Measuring Core and Skin Temperature during Exercise in the Heat

2019 ◽  
Vol 24 (1) ◽  
pp. 49-55
Author(s):  
Stephen P. Fenemor ◽  
Nicholas D. Gill ◽  
Stacy T. Sims ◽  
C. Martyn Beaven ◽  
Matthew W. Driller
Keyword(s):  
Skin Temperature ◽  
Thermal Imaging ◽  
Thermal Imaging Camera ◽  
Imaging Camera

scholarly journals Infrared Thermal Imaging for Evaluation of Clubfoot After the Ponseti Casting Method—An Exploratory Study

2021 ◽  
Vol 9 ◽  
Author(s):  
Balasankar Ganesan ◽  
Joanne Yip ◽  
Ameersing Luximon ◽  
Paul J. Gibbons ◽  
Alison Chivers ◽  
...  
Keyword(s):  
Skin Temperature ◽  
Infrared Thermography ◽  
Thermal Imaging ◽  
Lateral Side ◽  
Thermal Images ◽  
Temperature Changes ◽  
Surgical Methods ◽  
Before And After ◽  
Significant Temperature ◽  
Casting Pressure

Background: Conservative treatment, Ponseti method, has been considered as a standard method to correct the clubfoot deformity among Orthopedic society. Although the result of conservative methods have been reported with higher success rates than surgical methods, many more problems have been reported due to improper casting, casting pressure or bracing discomfort. Nowadays, infrared thermography (IRT) is widely used as a diagnostic tool to assess musculoskeletal disorders or injuries by detecting temperature abnormalities. Similarly, the foot skin temperature evaluation can be added along with the current subjective evaluation to predict if there is any casting pressure, excessive manipulation, or overcorrections of the foot, and other bracing pressure-related complications.Purpose: The main purpose of this study was to explore the foot skin temperature changes before and after using of manipulation and weekly castings.Methods: This is an explorative study design. Infrared Thermography (IRT), E33 FLIR thermal imaging camera model, was used to collect the thermal images of the clubfoot before and after casting intervention. A total of 120 thermal images (Medial region of the foot–24, Lateral side of the foot–24, Dorsal side of the foot−24, Plantar side of the foot−24, and Heel area of the foot–24) were collected from the selected regions of the clubfoot.Results: The results of univariate statistical analysis showed that significant temperature changes in some regions of the foot after casting, especially, at the 2nd (M = 32.05°C, SD = 0.77, p = 0.05), 3rd (M = 31.61, SD = 1.11; 95% CI: 31.27–31.96; p = 0.00), and 6th week of evaluation on the lateral side of the foot (M = 31.15°C, SD = 1.59; 95% CI: 30.75–31.54, p = 0.000). There was no significant temperature changes throughout the weekly casting in the medial side of the foot. In the heel side of the foot, significant temperature changes were noticed after the third and fourth weeks of casting.Conclusion: This study found that a decreased foot skin temperature on the dorsal and lateral side of the foot at the 6th week of thermography evaluation. The finding of this study suggest that the infrared thermography (IRT) might be useful as an adjunct assessment tool to evaluate the thermophysiological changes, which can be used to predict the complications caused by improper casting, over manipulative or stretching and casting-pressure related complications.

scholarly journals Heating Characteristics of Film Prepared with Polymer Composites Containing Graphite

2018 ◽  
Author(s):  
Seojin Kim ◽  
Weontae Oh ◽  
Jong-Seong Bae ◽  
Jeong Hyun Yeum ◽  
Jaehyung Park ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Chemical Structure ◽  
Heating Temperature ◽  
Infrared Thermal Imaging ◽  
Dc Voltage ◽  
Copper Electrodes ◽  
Physical Chemical ◽  
Imaging Camera ◽  
Pet Film ◽  
The Relationship

Heating films were prepared by using poly(methyl methacrylate) and polybutadiene composites containing graphite. The heating film was prepared by casting the as-made polymer composite on PET film. Copper electrodes were attached to both ends of the as-prepared film, and the heating characteristics of the film was analyzed while applying DC voltage. The electrical conductivity and the heating temperature of the heating films depended on the size, the structure, the content and the dispersion characteristics of the graphite in the composite. The electrical resistance of the heating film was controlled to adjust the heating temperature of the film. The relationship between the physical/chemical structure and the heating characteristics of the composite film was studied by measuring the heating temperature as functions of film thickness and resistance by using an infrared thermal imaging camera. The lower the film resistance, the higher the heating temperature of the film. The surface temperature was uniform throughout the film.

The Thermal Colour and the Emissivity of Printed Pigments on Knitted Fabrics for Application in Diurnal Thermal Camouflage Garments

2019 ◽  
Vol 812 ◽  
pp. 127-133
Author(s):  
Catarina Pimenta ◽  
Carla Morais ◽  
Raul Fangueiro
Keyword(s):  
Skin Temperature ◽  
Thermal Imaging ◽  
Outdoor Environment ◽  
Thermal Manikin ◽  
Climatic Chamber ◽  
Thermal Tests ◽  
Knitted Fabrics ◽  
Thermal Imaging Camera ◽  
Thermal Images ◽  
Imaging Camera

This work compares thermal colour and emissivity of different pigments printed on to two types of jersey knitted fabrics (cotton and polyester). In order to analyze and differentiate the thermal colours of the knitted fabrics samples, diurnal and nocturnal thermal images of a female body were captured in an outdoor environment using a thermal imaging camera. Five pigments (white, black, yellow, magenta and cyan blue) were analyzed in a conditioned environment, simulating atmospheric (diurnal/nocturnal) and skin temperature, using a climatic chamber, a thermal manikin and a thermal imaging camera. The thermal tests allowed identifying the thermal colour of the printed pigments for application in the diurnal thermal camouflage garments.

Synchronized slow-amplitude modulations in the electromyograms of shivering muscles

1989 ◽  
Vol 66 (5) ◽  
pp. 2358-2363 ◽  
Author(s):  
D. J. Israel ◽  
R. S. Pozos
Keyword(s):  
Skin Temperature ◽  
Flow Rate ◽  
Visual Analysis ◽  
Human Subjects ◽  
Muscular Activity ◽  
Emg Activity ◽  
Temperature Changes ◽  
Relationship Of ◽  
The Relationship ◽  
Pearson Correlations

The electromyograms (EMG) of shivering human subjects exposed to 0 degrees C air in an environmental chamber were analyzed to detect slow-amplitude modulations (SAMs, less than 1 Hz) in the EMGs of widely separated muscles and to study the relationship of these SAMs to respiration rate and skin temperature. Distinct amplitude modulations were observed in the raw EMGs during shivering. The peaks in EMG activity occurred simultaneously in the majority of the monitored muscles in all subjects. Pearson correlations between the average rectified EMGs of 93% of the muscles were significant (P less than 0.05). Visual analysis of the EMG and respiration signals indicated that the peaks in muscular activity occurred 6–12 times/min, whereas respiration ranged from 10 to 23 cycles/min. For all subjects respiration was at a higher frequency than amplitude modulation in the EMG. Comparison of EMG records with expiratory flow rate traces in shivering subjects indicated no one-to-one correlation between the occurrence of respiration and EMG amplitude modulations. Respiratory flow rate and average rectified EMG showed significant correlation in only 33% of the cases. In addition, skin temperature changes could not be correlated with the SAMS.

scholarly journals The Effect of Acupuncture to SP6 on Skin Temperature Changes of SP6 and SP10: An Observation of “Deqi”

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jia-Min Yang ◽  
Xiao-Yu Shen ◽  
Ling Zhang ◽  
Song-Xi Shen ◽  
Dan-Dan Qi ◽  
...  
Keyword(s):  
Skin Temperature ◽  
Saline Control ◽  
Control Group ◽  
Group Model ◽  
Model Group ◽  
Saline Control Group ◽  
Temperature Changes ◽  
Group A ◽  
Group B ◽  
The Relationship

Background. Deqi sensation is a complex but an important component for acupuncture effect. In this study, we tried to observe the relationship between Deqi and skin temperature changes and whether there was some relativity between Deqi and needle stimulations on cold congealing and dysmenorrhea rat model. Thirty-two female Sprague Dawley (SD) rats were randomly divided into four groups (Saline Control Group, Model Group, Group A with strong stimulation, and Group B with small stimulation). Group A and Group B were performed with different stimulations. We found that, compared with saline control group, model group, and Group B, Group A showed that the skin temperature changes on right acupoint SP6 and SP10 increased significantly at 5 min–10 min interval. The skin temperature changes on left SP6 decreased at instant–5 min interval. The skin temperature changes on right SP10 decreased significantly at instant–5 min interval and 10 min–20 min interval. Thermogenic action along Spleen Meridian of Foot Greater Yin was manifested as simultaneous skin temperature increase on right SP6 and SP10 at 5 min–10 min interval after needling SP6, which was helpful to illustrate the relationship between the characteristic of Deqi and needle stimulations.

scholarly journals Vector Analysis of Electrical Networks for Temperature Measurement of MOS Power Transistors

2021 ◽  
Vol 25 (4) ◽  
pp. 83-87
Author(s):  
Błażej Torzyk ◽  
Bogusław Więcek
Keyword(s):  
Thermal Imaging ◽  
Network Capacity ◽  
Network Analyzer ◽  
Electrical Networks ◽  
Scattering Parameters ◽  
Temperature Changes ◽  
Mos Transistor ◽  
Power Transistors ◽  
Imaging Camera ◽  
Influence Of Temperature On

The article presents the concept of using VNA (Vector Network Analyzer) to measure the temperature of the MOS transistor junction. The method assumes that the scattering parameters of the network consisting of the transistor depend on the temperature. The tests confirmed the influence of temperature on the S11 parameter and the input network capacity during ambient temperature changes in the range of 35–70 °C. Measurements were made for the gate-source (G-S) input of the system. The measurements were carried-out with the transistor in the ON/OFF states. In order to validate the measurements, the temperature of the tested element was recorded with the MWIR Cedip-Titanium thermal imaging camera.

A mechanism for minimizing temperature effects on repetitive firing frequency

1978 ◽  
Vol 234 (5) ◽  
pp. C155-C161 ◽  
Author(s):  
L. D. Partridge ◽  
J. A. Connor
Keyword(s):  
Temperature Effects ◽  
Potassium Current ◽  
Firing Frequency ◽  
Repetitive Firing ◽  
Molluscan Neurons ◽  
Temperature Changes ◽  
Stimulus Current ◽  
Conductance Changes ◽  
Time Courses ◽  
The Relationship

The magnitudes and time courses of conductance changes in molluscan neurons show marked temperature dependence. Interestingly, though, the relationship between repetitive firing frequency and stimulus current is not greatly affected by moderated temperature changes (6-8 degrees C). The transient potassium current, IA, is largely reponsible for the interspike voltage trajectory, hence, repetitive interval, in molluscan neurons. It is shown in this study that temperature dependencies of the rate constants and magnitude of the IA system are balanced in such a way that the observed temperature insensitivity of the repetitive response is predicted.

scholarly journals Heating Characteristics of Films Prepared with Polymer-Graphite Composites

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Seojin Kim ◽  
Weontae Oh ◽  
Jong-Seong Bae ◽  
Seong Baek Yang ◽  
Jeong Hyun Yeum ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Chemical Structure ◽  
Heating Temperature ◽  
Infrared Thermal Imaging ◽  
Copper Electrodes ◽  
Physical Chemical ◽  
Imaging Camera ◽  
Pet Film ◽  
Graphite Composites ◽  
The Relationship

Heating films were prepared by using poly(methyl methacrylate) and polybutadiene composites containing graphite. The heating film was prepared by casting the as-made polymer composite on the PET film. Copper electrodes were attached to both ends of the as-prepared film, and the heating characteristics of the film were analyzed while applying the DC voltage. The electrical conductivity and the heating temperature of the heating films depended on the size, the structure, the content, and the dispersion characteristics of the graphite in the composite. The electrical resistance of the heating film was controlled to adjust the heating temperature of the film. The relationship between the physical/chemical structure and the heating characteristics of the composite film was studied by measuring the heating temperature as functions of film thickness and resistance by using an infrared thermal imaging camera. The lower the film resistance, the higher the heating temperature of the film. The surface temperature was uniform throughout the film.

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