Interventional Infrared Thermal Diagnostics in Medicine and Physiology

Vainer, Boris G.; Rzhanov, A. V.

doi:10.21611/qirt.2012.340

Cited by 4 publications

(6 citation statements)

References 15 publications

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“…Similar to that shown in [1], a radically different systemic vascular reaction to short-term local occlusion in one of the limbs -from full synchronism to complete indifference -was recorded among the examined individuals. Supporting examples are given in figure 3.…”

Section: Integrated Approach To Thermal Imaging-based Medical Diagnossupporting

confidence: 77%

“…Recent researches have proved that modern computerized FPA-based infrared cameras make it possible in medicine and physiology to implement an up-to-date method called interventional infrared thermal diagnostics [1]. It provides an opportunity to increase the reliability of the results obtained from infrared thermography (IRT) examination in humans.…”

Section: Integrated Approach To Thermal Imaging-based Medical Diagnosmentioning

confidence: 99%

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Infrared thermography-based integrated approach aimed at objective evaluation of systemic vascular reactivity in humans

Vainer¹,

Морозов²

2014

Proceedings of the 2014 International Conference on Quantitative InfraRed Thermography

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Standard thermal imaging-based diagnostics as applied to neurologyThermal imaging has long been in use as a prospective diagnostic method in medicine. Infrared cameras are often involved in the diagnostic process to pick up valuable information about blood flow intensity in the peripheral vessels. Infrared thermography-based data allow receiving additional information about the state of microcirculation in tissues in various pathological cases. In practice, the method is applicable to many areas of medicine by virtue of its noninvasiveness and lack of contraindications. In particular, this is especially true to neurology and acute cerebral circulatory disorders. Diagnostic data obtained with the use of thermal imaging allow the physician to examine a functioning of the circulatory system in details and individualize for each patient a personalized treatment program for his rehabilitation after stroke. Infrared thermography, as applied to medicine, is capable of bringing invaluable information about human organism, and this information cannot be performed using any different diagnostic methods. We confirmed this fact for the umpteenth time by the ordinary study of patients suffered by typical aftereffects of the stroke.The well-known dangerous outcomes of a stroke are paralysis and paresis of the extremities. In these cases, a comprehensive standard rehabilitation program does not always lead to improvement. We have developed and tested the non-standard method of complex examination of patients affected by ischemic stroke. The method is based on the simultaneous use of the FPA-based thermal imaging and some additional medical diagnostic means. Our main aim in this work was to assess objectively the results of treatment and rehabilitation of a patient affected by stroke on the base of examination of his microcirculation status in the affected limbs. An integrated approach to the assessment of microcirculatory disorders during rehabilitation after stroke provides an opportunity for a short-time (15-20 minutes) intensive investigation in order to identify the true physiological status of the patient's organism, to determine the level of vascular reactivity and give an objective prognosis on the disease in question.Using the created diagnostic complex we examined 69 patients. The remoteness of their stroke coming varied from 1 month to 5 years with the rehabilitation course term up to 1 month and multiplicity of courses -1-4 per year. After rehabilitation courses, positive dynamics in the neurological status of the patients undergone medical examination using a standard routine procedure occurred in 94% of individuals -64 persons (figure 1a). Improvement of microcirculation in the paretic limbs, according to infrared plethysmography (figure 1b), was registered in 75% (52 patients). Positive dynamics according to laser flowmetry (figure 1c) in the form of improved microcirculation and vessel filling was observed in 70% (50 patients). According to electroneuromyography (in the form of a rise of M-wave) the improvement ...

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Section: Integrated Approach To Thermal Imaging-based Medical Diagnossupporting

confidence: 77%

Section: Integrated Approach To Thermal Imaging-based Medical Diagnosmentioning

confidence: 99%

Infrared thermography-based integrated approach aimed at objective evaluation of systemic vascular reactivity in humans

Vainer¹,

Морозов²

2014

Proceedings of the 2014 International Conference on Quantitative InfraRed Thermography

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“…The crossclamping of the rat's limb or tail vessels served as another kind of external impact to the organism. Similar intervention was previously put to the test in humans using the crossclamping of their shoulder vessels [1,3,4]. Unlike typical systemic reaction in wakeful humans, the reaction in narcotized rats was not too manifesting (figures 8 and 9).…”

mentioning

confidence: 70%

“…Electrocardiogram (ECG) recording was realized using hardware and software system "Veda Puls" manufactured by LLC Biokvant (Novosibirsk, Russia). Sampling frequency of the ECG was 500 Hz.Narcotized laboratory rats were placed into the special box (figure 1) designed for IRT-based investigation of small animals and described in [1]. The use of this box helped us to avoid many bothering artefacts typical of highprecision thermal studies.…”

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confidence: 99%

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Infrared thermography as applied to the studies of cardiovascular system in rats

Vainer¹,

Баранов²,

Vergunov³

2014

Proceedings of the 2014 International Conference on Quantitative InfraRed Thermography

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Fig. 1. A special shielding box equipped with mechanical support for infrared camera and universal rotating table for small laboratory animals. The infrared camera (TKVr-IFP/SVIT) is shown in the off (horizontal) position.Interventional FPA-based infrared thermography (IRT) [1] is applied to the investigation of transient cardiovascular reactions and blood flow change emerging in response to external mechanical and/or thermal impacts in laboratory albino rats. Synchronously with the infrared camera TKVr-IFP/SVIT, the technique enabling measurements of cardiac R-R intervals and heart rate variability [2] was applied as an alternative control method accompanying thermal imaging. Electrocardiogram (ECG) recording was realized using hardware and software system "Veda Puls" manufactured by LLC Biokvant (Novosibirsk, Russia). Sampling frequency of the ECG was 500 Hz.Narcotized laboratory rats were placed into the special box (figure 1) designed for IRT-based investigation of small animals and described in [1]. The use of this box helped us to avoid many bothering artefacts typical of highprecision thermal studies. Photograph (figure 2) and thermograms (figure 3) provide an insight into the typical setting accompanying the study. They demonstrate a rat undergoing the interventional IRT-based examination. We proposed and successfully tested the use of thermoelectric (Peltier) cooler as a convenient tool appropriate for a lot of physiological applications where a local heating or cooling of outer parts of an animal or human body is necessary.Local and systemic cardiovascular manifestations in rats were investigated in details. Vascular reactions were monitored during and after local and/or whole body heating, local cooling, crossclamping of the main vessels of a paw and creating artificial ischemia in the rat tail.Owing to quantitative FPA-based IRT, we were fortunate to disclose several intriguing physiological phenomena in rats. First of all, it was revealed that, even in the rat's calm sleeping condition, its blood supply exhibits activity which is not always definitely explainable. Figure 4 demonstrates temporal alterations in the temperature of different parts of the

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Infrared Thermography-based Biophotonics: Integrated Diagnostic Technique for Systemic Reaction Monitoring

Vainer

Морозов

2017

Physics Procedia

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Interventional Infrared Thermal Diagnostics in Medicine and Physiology

Abstract: Up-to-date trend in biomedical infrared thermography is illustrated, discussed and called interventional biomedical infrared thermography. New experimental results obtained with the use of FPA-based infrared camera and applicable to human physiology are presented.

Cited by 4 publications

References 15 publications

Infrared thermography-based integrated approach aimed at objective evaluation of systemic vascular reactivity in humans

Infrared thermography-based integrated approach aimed at objective evaluation of systemic vascular reactivity in humans

Infrared thermography as applied to the studies of cardiovascular system in rats

Infrared Thermography-based Biophotonics: Integrated Diagnostic Technique for Systemic Reaction Monitoring

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