Electrical Impedance Tomography to Detect Trends in Pulmonary Oedema

Símini, Franco; Santos, Eduardo Nunes dos; Arregui, M.

doi:10.1007/978-3-319-74388-2_4

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…Bioimpedance is applied as a medical diagnostic method at the respiratory [1], cardiocirculatory [2], dermatological [3] muscular level [4] and even for the detection of some types of cancer [5].…”

Section: Introductionmentioning

confidence: 99%

Bone Fracture Detection by Electrical Bioimpedance: First Non-Invasive Measurements in Ex-Vivo Mammalian Femur

Concu

et al. 2019

Preprint

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The fracture of long bones is one of the pathologies of greater demand of systems of medical emergencies, the method used for the diagnosis, the radiology of X-rays, produces damages to the patients and to the hospitals environment. For these reasons, our group is studying the implementation of a new diagnostic technique for the detection of bone fractures by bioimpedance measurements. To simulate a limb, two phantom of bovine femurs (the one with an entire bone and the other with a sawn bone) were constructed and non-invasive Electrical Impedance Spectroscopy measurements were taken on them in order to identify differences in their respective Cole Cole diagrams. Impedance spectroscopy was performed by a frequency sweep between 1 Hz and 65 kHz at a fixed current of 1 mA. The results obtained show wide differences in the Cole Cole diagrams of both phantoms (entire and fractured bone), especially concerning the real component of the, which latter, around the bones section corresponding to that of the lesion in both femurs, was always lower in the fractured femur than the entire one. These first superficial (non-invasive) measurements correspond to the electrical impedance spectroscopy bases and these could -in turn-correspond to what occurs in mammals immediately after the fracture happens, i. e. a dramatic increase in electrical conductivity due to diffusion into the fracture site of more conductive materials such as the blood and the extravascular fluids.

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Section: Introductionmentioning

confidence: 99%

Bone Fracture Detection by Electrical Bioimpedance: First Non-Invasive Measurements in Ex-Vivo Mammalian Femur

Concu

et al. 2019

Preprint

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“…In much the same way the EKG is the result of skin measurements of internal electrical activity of the heart. The cardiologist in his/her mind reconstructs the cardiovascular function by interpreting EKG signals [6,7], EIT is used to build imaging estimates of a region confined by the electrodes. Both human anatomical and dynamic function parameters -such as pulmonary ventilation-can be quantified by EIT [3].…”

Section: Introductionmentioning

confidence: 99%

Bioimpedance and Bone Fracture Detection: A State of the Art

Dell'Osa¹,

Símini²,

Felice³

2019

Preprint

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Bioimpedance measurements are used increasingly in health applications because bioelectric parameters have been associated with anatomical and physiological properties, thus enabling to distinguish medical conditions. For bone fracture diagnostics, nevertheless, there is no established non-invasive method. Ex vivo studies and In vivo bioimpedance procedures, both invasive and non-invasive, on mammalians long bones are associated with promising results. In this work, out of a total of 568 papers, we reviewd 59 articles that mention long bone integrity by electric properties, be it Bioimpedance Analysis, Electrical Impedance Spectroscopy or Electrical Impedance Tomography. The papers are described in three sections, “Ex vivo measurements”, “In vivo invasive measurements” and “In vivo non-invasive measurements”. This review allows to establish the basics to planning the development of new technology to detect bone fracture via bioimpedance measurements.

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Electrical impedance tomography for neonatal ventilation assessment: a narrative review

Masner

Blasina

Símini

2019

J. Phys.: Conf. Ser.

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Neonatal care has improved dramatically over the last decades thanks to a better understanding of the transition to extrauterine life, especially due to the new respiration condition. A privileged technique to assess the filling of the lungs with air in a non-invasive way is Electrical Impedance Tomography (EIT), which is, therefore, also a tool to monitor ventilation. Out of 2427 papers on EIT from 1985 to 2018, 116 deal with EIT in neonatal care, with both the set and subset increasing at similar rates of 5 and 0.4 additional papers per year (0.03 and 0.05 papers per year) respectively. EIT can be used to determine Body position and Pneumothorax, to guide Endotracheal Tube Positioning and to monitor Ventilation Homogeneity. Moreover, real time EIT gives abundant evidence to develop new techniques such as Sustained Inflation, Protective Intended Ventilation, Minimal Invasive Surfactant Therapy, Less Invasive Surfactant Administration, Intubation-Surfactant-Extubation and Oro Pharyngeal Surfactant during their application to both animal models and patients. The low cost, non-invasive and easy graphic interpretation of EIT leads to the belief that it will have widespread use in Neonatal Medicine.

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Electrical Impedance Tomography to Detect Trends in Pulmonary Oedema

Cited by 5 publications

References 9 publications

Bone Fracture Detection by Electrical Bioimpedance: First Non-Invasive Measurements in Ex-Vivo Mammalian Femur

Bone Fracture Detection by Electrical Bioimpedance: First Non-Invasive Measurements in Ex-Vivo Mammalian Femur

Bioimpedance and Bone Fracture Detection: A State of the Art

Electrical impedance tomography for neonatal ventilation assessment: a narrative review

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