Split-Ring Resonator Sensor Penetration Depth Assessment Using In Vivo Microwave Reflectivity and Ultrasound Measurements for Lower Extremity Trauma Rehabilitation

Sensors
Syaiful Redzwan Mohd ShahRobin Augustine

Abstract

In recent research, microwave sensors have been used to follow up the recovery of lower extremity trauma patients. This is done mainly by monitoring the changes of dielectric properties of lower limb tissues such as skin, fat, muscle, and bone. As part of the characterization of the microwave sensor, it is crucial to assess the signal penetration in in vivo tissues. This work presents a new approach for investigating the penetration depth of planar microwave sensors based on the Split-Ring Resonator in the in vivo context of the femoral area. This approach is based on the optimization of a 3D simulation model using the platform of CST Microwave Studio and consisting of a sensor of the considered type and a multilayered material representing the femoral area. The geometry of the layered material is built based on information from ultrasound images and includes mainly the thicknesses of skin, fat, and muscle tissues. The optimization target is the measured S11 parameters at the sensor connector and the fitting parameters are the permittivity of each layer of the material. Four positions in the femoral area (two at distal and two at thigh) in four volunteers are considered for the in vivo study. The penetration depths are finally ...Continue Reading

References

Mar 1, 1996·The American Journal of Clinical Nutrition·R N BaumgartnerP J Garry
Nov 1, 1996·Physics in Medicine and Biology·C GabrielE Corthout
Apr 9, 2008·IEEE Transactions on Bio-medical Engineering·Johanna PetterssonMagnus Borga
Nov 25, 2011·Archives of Orthopaedic and Trauma Surgery·Ellen M B P ReulingErnst L F B Raaymakers
Nov 17, 2015·IEEE Transactions on Microwave Theory and Techniques·Heungjae ChoiAdrian Porch
Jan 1, 2014·IEEE Journal of Translational Engineering in Health and Medicine·Elias OdelstadRobin Augustine
Jun 28, 2016·IEEE Transactions on Microwave Theory and Techniques·Paul M MeaneyTapani Lahtinen
Sep 5, 2017·Healthcare Technology Letters·Noor Badariah AsanRobin Augustine

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Citations

Mar 20, 2020·Healthcare Technology Letters·Mauricio David PerezRobin Augustine
Aug 29, 2021·Sensors·Viktor MattssonRobin Augustine

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Software Mentioned

CST
Computer Simulation Technology ( CST Studio
SIMULIA

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