The aim of this study was to find the relationship between active dynamic thermography (ADT) with cold excitation and burn depth. This new modality of evaluation of burns seems to be an attractive proposal for quantitative classification, allowing proper choice of burn wound treatment: conservative or surgical, especially compared with static thermography. The work was an in vivo experiment on domestic pigs, and a small number of patients were also diagnosed as part of the study. Statistical analysis showed a high correlation between the ADT synthetic parameter--thermal time constant, τ--and the classification of burn wounds that were predicted to heal within 3 weeks and so were treated conservatively and those that were predicted to not heal within 3 weeks and so were surgically treated. The results of the study show an accuracy of 60.7% for clinical evaluation, 69.6% for static thermography, 83.0% for ADT, and 84.0% for histopathologic assessment. The authors have concluded that the ADT method with cold excitation is suitable for the qualitative and quantitative assessment of burn depth.

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Statistical properties of Trichel pulses with AC voltages are studied, measuring simultaneously the frequency distributions of the apparent charge q and of the light intensity qL. The occurrence of quasi-Trichel pulses and negative streamers, in addition to regular Trichel pulses, is observed. It is established that, along with the normal conditions necessary for the occurrence of regular Trichel pulses, a sufficiently intense Malter emission of electrons is essential. If this intensity is insufficient quasi-Trichel pulses appear and if there is no emission negative streamers appear. The above types of partial discharge differ in certain properties, namely the range of values of q; the values of the ratio q/qL; the stability of the pulses with time and the spread of the times of occurrence on the negative half-cycle of the applied voltage.

-Use of the dynamic thermography for assessment of burns is discussed. Animal in-vivo experiments are presentedsets of burns were inflicted on the backs of eight domestic pigs. Thermographic measurements of burns with different depth of affected tissue (from the first to the third-degree burns) are correlated with histopathologic analysis of lesions. The results show that dynamic thermography might be advice as a simple, non-invasive and non-stressed for patients diagnostic tool. [4,5] were investigated, but none of these techniques is widely accepted in clinical practice.We asked [6] if dynamic thermography might be used as an objective, quantitative method for investigation of burns. The preliminary results were very promising therefore we made extended studies basing on in-vivo experiments on domestic pigs in controlled conditions with full histopathologic and bacteriologic investigations. Some results are presented here.The aim of the current study is twofold: a) to develop a reliable mathematical model of skin burns; b) to improve measurement procedures of active thermography and calibrate the measurement set-up for proper classification of burn injures according to the proposed model. The method is basing on measurable, objective tissue properties as thermal conductivity or thermal capacitance. Values of these parameters are related to physiological state of skin and subdermal tissues, its vascularity, pliability and maturation. II. METHODOLOGY A. Conditions of the experimentEight young boars weighting 20 -30 kg were used in experiments. The animals were observed and treated against pain or discomfort during the period of 5 days of investigation according to procedures accepted by the local Committee of Ethics and Good Practice. The pigs were maintained under a surgical plane of anaesthesia in conditioned environment of 24 0 C. The back skin was clipped before creation of burns. Aluminium bar (2.5 cm by 2.5 cm and 150 gram weight) and copper roll (diameter d = 4cm and 300 gram weight) were used as applicators for creating burn injury. 11 paired sets of burns were inflicted on the back skin of a pig using aluminium (5 pairs) and copper (6 pairs) bars preheated in hot water to 80 0 C, 90 0 C, 100 0 C and then applied to pig's back for a period of 10, 20 or 30s (see for details Table I). Each pair was representing different conditions of injury giving a set of controlled burn depths. The distribution of burn fields on a pig is shown in Fig. 1. The total body surface area of burns in each pig was approximately 4 %. In the shaded fields temperature was measured 2 mm under the skin during application of metal bars using miniature Pt-100 probe. Also, changes of the temperature of aluminium and copper bars were recorded using Pt-100 sensors (see schematic placement of sensors in Fig. 2). The full-thickness skin biopsies were collected (for all fields 1a -11a and for the healthy skin), taken INVESTIGATION OF SKIN BURNS BASING ON ACTIVE THERMOGRAPHY Abstract Subject Terms Report Classification unclassifie...