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Dependence of the error in measuring brightness temperature for different values of the antenna VSWR on attenuator loss
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This paper presents a new circuit of the miniature microwave radiometer for wearable devices, which can be used to monitor the core body temperature (CBT) of internal human tissues continuously 24/7. The measurement results of the proposed device, as opposed to the known miniature wearable radiometers, remain unchanged when the impedance of the exa...
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... RTM-01-RES [Moscow, Russia, and Bolton, UK; http://www.resltd.ru/eng/rtm/ (accessed on 19 January 2023)] (Figure 1) is the commercially available instrument used in most of the studies; however, technical modifications, including different types of sensors and antennas, have been reported, as well as the design of newer devices, such as portable ones [14,22,23,28,29,[40][41][42][43]. The RTM-01-RES microwave computer-based system detects the temperature of internal tissues at microwave frequencies, with an accuracy of ±0.2 • C within seconds. ...
The ability of microwave radiometry (MWR) to detect with high accuracy in-depth temperature changes in human tissues is under investigation in various medical fields. The need for non-invasive, easily accessible imaging biomarkers for the diagnosis and monitoring of inflammatory arthritis provides the background for this application in order to detect the local temperature increase due to the inflammatory process by placing the appropriate MWR sensor on the skin over the joint. Indeed, a number of studies reviewed herein have reported interesting results, suggesting that MWR is useful for the differential diagnosis of arthritis as well as for the assessment of clinical and subclinical inflammation at the individual large or small joint level and the patient level. MWR showed higher agreement with musculoskeletal ultrasound, used as a reference, than with clinical examination in rheumatoid arthritis (RA), while it also appeared useful for the assessment of back pain and sacroiliitis. Further studies with a larger number of patients are warranted to confirm these findings, taking into account the current limitations of the available MWR devices. This may lead to the production of easily accessible and inexpensive MWR devices that will provide a powerful impetus for personalized medicine.
... Article [36] presented information on the fi rst commercial single-channel radiometer developed under the leadership of S. G. Vesnin, one of the authors of this article. Report [37] presented a miniature version of the radiometer. The parameters of the miniature microwave radiometer characterizing measurement accuracy are no worse than those of stationary devices, while size and weight are hundreds of times lower. ...
Due to the COVID-19 epidemic, the challenge of introducing methods for investigating patients reducing or eliminating the probability of infection of medical staff is currently relevant. This article provides an analytical review of new technological approaches to organizing the work of medical personnel in carrying out auscultation of patients with COVID-19. The development and approval of such technologies is shown to have started around the world. The ubiquitous and large-scale introduction of these methods into medical practice therefore seems expedient.
The principles of radiothermograph construction and an algorithm for automated monitoring of the extent of mismatch at the interface between the antenna and biological object media in the process of radiothermometric measurements are considered. The results of implementing this algorithm in the development of a five-channel dualfrequency medical radiothermograph are presented. Further research tasks aimed at improving the noise immunity of multichannel multifrequency radiothermographs are formulated.
An automated system for filtering blood transfusion media through special filters, monitoring and logging the filtration parameters, and processing filtration protocols is presented. The system can be used in blood banks and blood transfusion stations and departments.
