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Journal of Radio Electronics Online scientific journal · eISSN 1684-1719
2020, № 8 · BIOMEDICAL RADIO ELECTRONICS

Near-field pulse microwave sounding of dynamics of subsurface structure of human living tissues at pulmonary and cardiovascular activity

L.A. Bokeria1, T.T. Kakuchaya1, E.S. 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: 10.30898/1684-1719.2020.8.5 UDC 621.371+537.87 EDN QGASGN

Abstract

Near-field measurements of the monosine signal scattered from the thorax detected variations related to the transformation of the dielectric structure of tissues in processes of pulmonary and cardiovascular activity. The method of retrieval of the depth distribution of the complex permittivity in the multilayer medium with the frequency dispersion based on solving the corresponding inverse scattering problem has been developed, and first results of its application have been obtained in the retrieval of variations of depth profiles of dielectric parameters of lung tissues as well as of related parameters of their air- and blood relative content.

  • ближнепольное СВЧ зондирование
  • обратные задачи рассеяния
  • медико-биологическая диагностика
  • near-field microwave sounding
  • inverse scattering problems
  • medical-biological diagnostics
Аннотация (на русском)

Ближнепольное импульсное СВЧ зондирование динамики подповерхностной структуры тканей тела при дыхании и сердечной деятельности

Ближнепольные измерения рассеянного от области грудной клетки моноимпульсного сигнала показали наличие вариаций, связанных с трансформацией диэлектрической структуры тканей в процессах дыхания и сердечной деятельности. Разработан метод восстановления глубинного распределения комплексной диэлектрической проницаемости в многослойной среде с частотной дисперсией, основанный на решении соответствующей обратной задачи рассеяния, и получены первые результаты восстановления вариаций глубинных профилей диэлектрических параметров ткани легких, а также обусловливающих эти вариации параметров их относительного воздухонаполнения или содержания крови.

For citation

Bokeria L.A., Kakuchaya T.T., Maksimovitch E.S., Badeev V.A., Gaikovich K.P. Near-field pulse microwave sounding of dynamics of subsurface structure of human living tissues at pulmonary and cardiovascular activity // Journal of Radio Electronics. – 2020. – No. 8. https://doi.org/10.30898/1684-1719.2020.8.5

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