M.K. Sedankin1, S.G. Vesnin2, A.G. Gudkov3, K.V. Zhuravleva4, V.V. Nazarov5, S.V. Chizhikov6

1–3,5,6 Bauman Moscow State Technical University (Moscow, Russia)

4 Moscow Power Engineering Institute (Moscow, Russia)

All work in the field of creating medical thermometric devices goes in two directions: the development of intracavitary devices that measure temperature through natural cavities, and devices that measure temperature through the skin. Pathological processes are characterized by a local change in temperature, which can be registered by a microwave radiothermograph. The aim of the work is the issues of the application of microwave radiometry in dermatology, application potential assessment and determination of the direction of further research. The data of the first applications of microwave radiometry in dermatology are presented. All patients also underwent fluorescent diagnostics and dermatoscopy. Then they were operated on with a mandatory histological examination of the removed macropreparation. Thermal asymmetry was 2.2 ± 0.08 °C on the projection of melanoma, and only 0.21 ± 0.06 °C on the projection of benign neoplasms. Pronounced temperature asymmetry (2.1 ± 0.08 °C) also occurred in patients with basilioma and squamous cell skin cancer. Temperature asymmetry was detected in 68 cases of 70 examined patients with melanoma (97.1% sensitivity). A similar thermal asymmetry was noted in 98.7% of patients with basilioma and squamous cell skin cancer. At the same time, 96.7% of patients with benign skin tumors did not have thermal asymmetry, which is important for screening diagnostics.

Thus, microwave radiometry can be effectively used to identify patients with malignant skin tumors. The authors recommend using the method for screening studies with differential diagnosis of patients with benign and malignant skin tumors considering the simplicity of the method, its high information content and harmlessness for the doctor and the patient. The obvious advantage of the method is the ability to visualize the prevalence of the tumor process. For the moment it is necessary to improve medical equipment for diagnosing melanoma based on microwave radiometry. The use of new circuit solutions in microwave radiothermographs, as well as a modern element base, will significantly reduce the size of the equipment., A promising direction in dermatology is the use of a miniature single-frequency radiothermograph, which makes it possible to visualize the temperature of neoplasms of the skin and surrounding tissues and monitor the thermal activity of tissues during treatment.

Sedankin M.K., Vesnin S.G., Gudkov A.G., Zhuravleva K.V., Nazarov V.V., Chizhikov S.V. Application of microwave radiometry in dermatology. Technologies of Living Systems. 2023. V. 20. № 1. Р. 46-54. DOI: https://doi.org/10.18127/j20700997-202301-05 (In Russian)

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