scholarly journals Ventilation inhomogeneity in obstructive lung diseases measured by electrical impedance tomography: a simulation study

2017 ◽  
Vol 32 (4) ◽  
pp. 753-761 ◽  
Author(s):  
B. Schullcke ◽  
S. Krueger-Ziolek ◽  
B. Gong ◽  
R. A. Jörres ◽  
U. Mueller-Lisse ◽  
...  
Keyword(s):  
Electrical Impedance Tomography ◽  
Simulation Study ◽  
Lung Diseases ◽  
Electrical Impedance ◽  
Impedance Tomography ◽  
Obstructive Lung Diseases ◽  
Ventilation Inhomogeneity

scholarly journals A simulation study on the ventilation inhomogeneity measured with Electrical Impedance Tomography

2017 ◽  
Vol 50 (1) ◽  
pp. 8781-8785 ◽  
Author(s):  
B. Schullcke ◽  
S. Krueger-Ziolek ◽  
B. Gong ◽  
K. Moeller
Keyword(s):  
Electrical Impedance Tomography ◽  
Simulation Study ◽  
Electrical Impedance ◽  
Impedance Tomography ◽  
Ventilation Inhomogeneity

Regional air trapping in acute exacerbation of obstructive lung diseases measured with electrical impedance tomography: a feasibility study

2020 ◽  
Vol 86 (2) ◽  
Author(s):  
Zhanqi Zhao ◽  
Mei-Yun Chang ◽  
Inéz Frerichs ◽  
Jia-Hao Zhang ◽  
Hou-Tai Chang ◽  
...  
Keyword(s):  
Acute Exacerbation ◽  
Electrical Impedance Tomography ◽  
Feasibility Study ◽  
Lung Diseases ◽  
Electrical Impedance ◽  
Air Trapping ◽  
Impedance Tomography ◽  
Obstructive Lung Diseases

scholarly journals Reconstruction of conductivity change in lung lobes utilizing electrical impedance tomography

2017 ◽  
Vol 3 (2) ◽  
pp. 513-516 ◽  
Author(s):  
Benjamin Schullcke ◽  
Bo Gong ◽  
Sabine Krueger-Ziolek ◽  
Knut Moeller
Keyword(s):  
Image Reconstruction ◽  
Electrical Impedance Tomography ◽  
Lung Diseases ◽  
Electrical Impedance ◽  
Patient Specific ◽  
Impedance Tomography ◽  
Reconstruction Process ◽  
Obstructive Lung Diseases ◽  
Conductivity Change ◽  
Lung Lobes

AbstractElectrical Impedance Tomography (EIT) is a novel medical imaging technology which is expected to give valuable information for the treatment of mechanically ventilated patients as well as for patients with obstructive lung diseases. In lung-EIT electrodes are attached around the thorax to inject small alternating currents and to measure resulting voltages. These voltages depend on the internal conductivity distribution and thus on the amount of air in the lungs. Based on the measured voltages, image reconstruction algorithms are employed to generate tomographic images reflecting the regional ventilation of the lungs. However, the ill-posedness of the reconstruction problem leads to reconstructed images that are severely blurred compared to morphological imaging technologies, such as X-ray computed tomography or Magnetic Resonance Imaging. Thus, a correct identification of the particular ventilation in anatomically assignable units, e.g. lung-lobes, is often hindered. In this study a 3D-FEM model of a human thorax has been used to simulate electrode voltages at different lung conditions. Two electrode planes with 16 electrodes at each layer have been used and different amount of emphysema and mucus plugging was simulated with different severity in the lung lobes. Patient specific morphological information about the lung lobes is used in the image reconstruction process. It is shown that this kind of prior information leads to better reconstructions of the conductivity change in particular lung lobes than in classical image reconstruction approaches, where the anatomy of the patients’ lungs is not considered. Thus, the described approach has the potential to open new and promising applications for EIT. It might be used for diagnosis and disease monitoring for patients with obstructive lung diseases but also in other applications, e.g. during the placement of endobronchial valves in patients with severe emphysema.

scholarly journals Ventilation inhomogeneity in patients with cystic fibrosis measured by electrical impedance tomography

2012 ◽  
Vol 57 (SI-1 Track-L) ◽  
Author(s):  
Zhanqi Zhao ◽  
Rainald Fischer ◽  
Ullrich Müller-Lisse ◽  
Knut Moeller
Keyword(s):  
Cystic Fibrosis ◽  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Impedance Tomography ◽  
Ventilation Inhomogeneity

Magnetic Resonance Driven Electrical Impedance Tomography: A Simulation Study

2011 ◽  
Vol 30 (3) ◽  
pp. 828-837 ◽  
Author(s):  
Michiro Negishi ◽  
Tangji Tong ◽  
R. Todd Constable
Keyword(s):  
Magnetic Resonance ◽  
Electrical Impedance Tomography ◽  
Simulation Study ◽  
Electrical Impedance ◽  
Impedance Tomography

scholarly journals A narrative review of electrical impedance tomography in lung diseases with flow limitation and hyperinflation: methodologies and applications

2020 ◽  
Vol 8 (24) ◽  
pp. 1688-1688
Author(s):  
Ling Sang ◽  
Zhanqi Zhao ◽  
Zhimin Lin ◽  
Xiaoqing Liu ◽  
Nanshan Zhong ◽  
...  
Keyword(s):  
Electrical Impedance Tomography ◽  
Lung Diseases ◽  
Electrical Impedance ◽  
Narrative Review ◽  
Flow Limitation ◽  
Impedance Tomography

A lung area estimation method for analysis of ventilation inhomogeneity based on electrical impedance tomography

2010 ◽  
Vol 18 (2) ◽  
pp. 171-182 ◽  
Author(s):  
Zhanqi Zhao ◽  
Daniel Steinmann ◽  
Danijela Müller-Zivkovic ◽  
Jörg Martin ◽  
Inéz Frerichs ◽  
...  
Keyword(s):  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Estimation Method ◽  
Impedance Tomography ◽  
Area Estimation ◽  
Ventilation Inhomogeneity ◽  
Lung Area
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