Human Body Communication In-Vivo Measurement Using Different Test Equipment

A noninvasive and radiation free technique for in-vivo measurement of the volume of organs or fluids in the human body is necessary for many clinical applications. Focused Impedance Method (FIM) is a novel technique of electrical impedance measurements which has enhanced sensitivity in a localized region. FIM can sense the change in transfer impedance of an organ within a reasonable depth of the human body using surface electrodes, minimizing contributions from its neighbouring regions. This of course assumes that the impedance properties of the embedded object are different from that of its surrounding tissues. This paper presents a new method for the determination of the volume of an organ within body using dual electrode separations of a concentric 4-electrode FIM configuration. In order to develop this formalism simulated FIM measurements using surface electrodes on a cubic volume conductor with embedded spherical objects were performed using a Finite Element (FE) based simulation software, COMSOL Multiphysics®. For the present methodology, the conductivity of the object with respect to its surroundings and its depth need to be known. The former is obtainable through some primary invasive or in vivo measurements while the latter may be approximated using anatomy. Experimental results on a phantom made up of a cubic tank filled with saline showed that the proposed method can be used to determine the volume of embedded objects to an accuracy of about 5% which is adequate for most physiological measurements. The technique may also find use in geology, oceanography and industry.Bangladesh Journal of Medical Physics Vol.7 No.1 2014 24-33

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Complementary in-vivo measurements for human body communication

2017 5th International Conference on Electrical Engineering - Boumerdes (ICEE-B) ◽

10.1109/icee-b.2017.8192153 ◽

2017 ◽

Author(s):

Fouad Maamir ◽

Smail Tedjini ◽

Rachida Touhami ◽

Mohamed Guiatni

Keyword(s):

Human Body ◽

In Vivo Measurements ◽

Human Body Communication

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Development of the Biomechanical Technologies for the Modeling of Major Segments of the Human Body: Linking the Past with the Present

Biology ◽

10.3390/biology9110399 ◽

2020 ◽

Vol 9 (11) ◽

pp. 399

Author(s):

Antonio Cicchella

Keyword(s):

Human Body ◽

Center Of Mass ◽

White Men ◽

Body Segments ◽

In Vivo Measurement ◽

Advantages And Disadvantages ◽

Direct Measurements ◽

Classical Studies ◽

Historical Examination

The knowledge of human body proportions and segmental properties of limbs, head and trunk is of fundamental importance in biomechanical research. Given that many methods are employed, it is important to know which ones are currently available, which data on human body masses, lengths, center of mass (COM) location, weights and moment of inertia (MOI) are available and which methods are most suitable for specific research purposes. Graphical, optical, x-ray and derived techniques, MRI, laser, thermography, has been employed for in-vivo measurement, while direct measurements involve cadaveric studies with dissection and various methods of acquiring shape and size of body segments. The present review examines the literature concerning human body segments’ properties for biomechanical purposes starting with a historical examination. It emerges that data obtained in studies on cadaveric specimens are still accurate in comparison to more recent technologies, whilst technological tools currently available are manifolds, each one with proper advantages and disadvantages. Classical studies were focused mainly on white men, while in recent years, the available data on body segments have been extended to children, women, and other races. Additionally, data on special populations (obese, pregnant women) are starting to appear in the scientific literature.

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