Infrared thermal imaging camera to measure low temperature thermal fields.

To measure low-temperature thermal fields, we have developed a single-element cooled thermal imaging camera for a spectral range of 8-14 μm with an internal shutter for radiometric calibration. To improve the accuracy of measuring the temperature of cold objects, we used a shutter with a combined emissivity as an internal reference source of radiation at the input of the device optical unit. With this aim a small mirror was fixed in the center on its surface covered black, thereby ensuring an efficient reflection of radiation in a wide spectral range of wavelengths.

Infrared thermal imaging controls freezing and warming in skin cryoablation.

The purpose of this study was to assess the possibilities of intraoperative control of the current parameters of frozen biological tissues in the cryoablation area, including the instant location of primary necrosis isotherm, based on the dynamics of thermal fields on skin surface. Cryoablation of skin was performed in 30 rats with exposure durations of 0.5, 1 and 2 min.

Morphological assessment of wound healing after cryodestruction of skin using an aqueous colloidal solution of C60 fullerenes.

Objective: The aim is to assess the morphological state of a cold skin wound in an experiment, using an aqueous colloidal solution of C60 fullerenes.

Patients And Methods: Materials and methods: An experimental study was conducted in 30 six-month-old male rats divided into three groups, 10 individuals in each group: group I included rats that did not undergo any manipulations; group II was represented by rats which underwent a cold wound simulation on the lateral thigh surface; group III was represented by rats who had a simulated cold wound followed by introduction of an aqueous colloidal solution of C60 fullerenes at a dose of 0.1 mg/kg for 5 days into the abdominal cavity, starting from the cryodamage day.

Morphological features of a cold skin wound under the influence of an extract of cryopreserved skin fragments of piglets (experimental study).

Objective: The aim of the study is to identify in an experiment the effect of an extract of cryopreserved fragments of piglets on the morphological state of a cold skin wound.

Patients And Methods: Materials and methods: Hairless six-month-old male rats were used in the study. They were divided into III groups: group I included 10 rats that had not been manipulated; group II was represented by 10 rats with cold wounds on the lateral surface of the thigh; group III was represented by 10 rats that were with a cold wound, followed by the injection of an extract of cryopreserved skin fragments of piglets into the abdominal cavity at a dose of 50 μg per 100 g of animal body weight (peptide concentration 100 μg/ml) once a day for 5 days from the time of wound modeling.