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Journal of Radio Electronics Online scientific journal · eISSN 1684-1719
2021, № 8 · BIOMEDICAL RADIO ELECTRONICS

Dynamic near-field microwave diagnostics of lungs

L.A. Bokeria1, T.T. Kakuchaya1, A.M. Kuular1, Y. Maksimovitch2, V.A. Badeev2, K.P. Gaikovich3

1 A.N. Bakulev National Medical Research Center of Cardiovascular Surgery, Rublevskoe shosse, Russia
2 Institute of Applied Physics NAN of Belarus, Minsk, Belarus
3 Institute for Physics of Microstructures RAS, Nizhnii Novgorod, Russia
Full text (PDF) DOI: 10.30898/1684-1719.2021.8.16 UDC 621.371+537.87 EDN BIQFZS

Abstract

Results of theoretical and experimental studies of the method of the near-field microwave tomography of the thorax are presented. Integral equations of inverse tomography problem of 3D blood- and air content inhomogeneities by data of multisensory measurements are obtained. Methods of air and blood content profiling in processes of breathing and heart activity by data of bistatic measurements of the scattered signal are proposed and solving algorithms of inverse problems are studied in the numerical simulation. Multifrequency and pulse measurements of scattered signals are carried out in processes of cardiorespiratory activity. By data of bistatic measurements of scattered signals parameters from the thorax, profiling relative air- and blood content profiles has been realized. Application possibilities of the method in the biomedical diagnostics are considered.

  • near-field microwave sounding
  • inverse scattering problems
  • medical-biological diagnostics
  • tomography of lungs
Аннотация (на русском)

Динамическая ближнепольная СВЧ диагностика легких

Представлены результаты теоретических и экспериментальных исследований метода ближнепольной СВЧ томографии грудной клетки. Получены интегральные уравнения обратных задач томографии трехмерных неоднородностей кровесодержания и воздухонаполнения легких по данным многосенсорных измерений. Предложены методы и исследованы в численном моделировании алгоритмы решения обратных задач профилирования воздухонаполнения и кровесодержания легких в процессах дыхания и работы сердца по однопозиционным бистатическим измерениям рассеянного сигнала. Выполнены многочастотные и импульсные измерения динамики рассеянных сигналов в процессах дыхания и сердечной деятельности. По данным бистатических измерений параметров рассеянного от области грудной клетки сигнала было выполнено профилирование относительного воздухонаполнения и кровесодержания легких. Рассмотрены возможные применения метода в медико-биологической диагностике.

For citation

Bokeria L.A., Kakuchaya T.T., Kuular A.M., Maksimovitch Y., Badeev V.A., Gaikovich K.P. Dynamic near-field microwave diagnostics of lungs // Journal of Radio Electronics. – 2021. – No. 8. https://doi.org/10.30898/1684-1719.2021.8.16

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