関連する実験動画

Updated: Jan 29, 2026

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Published on: September 6, 2024

電気インピーダンスイメージングを用いた骨の気孔率測定法

Miguel-Ángel San-Pablo-Juárez¹, Maria-Montserrat Oropeza-Saucedo², Eduardo Morales-Sánchez³

¹CICATA Querétaro, Instituto Politécnico Nacional, Cerro Blanco No. 141, Colonia Colinas del Cimatario, Mexico City, CDMX, 07738, MEXICO.

Physiological measurement

|January 27, 2026

要旨

Objective:

This paper describes a new method for measuring human bone density based on the measurement of bone electrical conductivity using the well-known technique: Electrical Impedance Tomography (EIT).

Approach:

The hypothesis is that bone electrical conductivity is directly related to bone mineral density. The proposed method consists of measuring the EIT, and then obtaining the conductivity values of the bones, and take this value to associate this one to a level of porosity. A model of skin, muscle, and bone was developed using computer simulation to vary the porosity in bones and obtain an inverse model in the form of an equation to measure three levels of porosity.

Main Results:

The behavior of different porosity levels was simulated, and impedance tomography was applied; it is shown that electrical conductivity varies according to bone porosity. A relationship was subsequently obtained between the measurement of conductivity and bone density, creating a new non-invasive method for possible application to early detection of osteoporosis.

Significance:

This is a novel, non-invasive method for possible application on the early detection of osteoporosis at three different levels of bone porosity.

キーワード:

骨密度骨の電気密度電気伝導率骨粗鬆症

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