Detection of local lung air content by electrical impedance tomography compared with electron beam CT.

@article{Frerichs2002DetectionOL,
  title={Detection of local lung air content by electrical impedance tomography compared with electron beam CT.},
  author={In{\'e}z Frerichs and Jose Hinz and Peter Herrmann and Gerald Weisser and G{\"u}nter Hahn and Taras Dudykevych and Michael Quintel and Gerhard Hellige},
  journal={Journal of applied physiology},
  year={2002},
  volume={93 2},
  pages={
          660-6
        }
}
The aim of the study was to validate the ability of electrical impedance tomography (EIT) to detect local changes in air content, resulting from modified ventilator settings, by comparing EIT findings with electron beam computed tomography (EBCT) scans obtained under identical steady-state conditions. The experiments were carried out on six anesthetized supine pigs ventilated with five tidal volumes (VT) at three positive end-expiratory pressure (PEEP) levels. The lung air content changes were… 
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Electrical impedance tomography for lung ventilation monitoring of the dog.
TLDR
The results show that EIT is a reliable method for evaluating the ventilation of dogs in a clinical setting and the accuracy of EIT might be improved by using a mesh corresponding to the different thoracic shapes of the dogs.
Assessment of Changes in Distribution of Lung Perfusion by Electrical Impedance Tomography
TLDR
The results indicate that redistribution of regional lung perfusion can be assessed by EIT during one-lung ventilation, and the performance of EIT in detecting changes in lung perfusions in even smaller lung regions remains to be established.
Electrical impedance tomography compared to positron emission tomography for the measurement of regional lung ventilation: an experimental study
TLDR
Regional lung ventilation and volume were accurately measured with EIT in healthy and injured lungs and validated by simultaneous PET imaging in injured and non-injured lungs.
Quantification of ventilation distribution in regional lung injury by electrical impedance tomography and xenon computed tomography.
TLDR
This study shows that EIT is able to reliably discern even small ventilation changes on sub-lobar level through a comparison with xenon-multidetector-row computed tomography (XeCT) in an animal model of sub- lobar lung injury.
Evaluation of an electrical impedance tomography-based global inhomogeneity index for pulmonary ventilation distribution
TLDR
The GI index quantifies the gas distribution in the lung with a single number and reveals good interpatient comparability.
Comparison of distribution of lung aeration measured with EIT and CT in spontaneously breathing, awake patients1.
TLDR
Lung area estimation from CT and EIT differs significantly, most probably because of the fundamental difference in image generation.
Assessing effects of PEEP and global expiratory lung volume on regional electrical impedance tomography
TLDR
Tidal and end-expiratory changes in pulmonary impedance reflect corresponding changes in lung volume, but the increasing underestimation with increasing lung volume should be taken into account in the analysis of EIT data.
Unilateral empyema impacts the assessment of regional lung ventilation by electrical impedance tomography.
TLDR
The results indicate that the presence of empyema may affect the quantitative evaluation of regional lung ventilation by EIT.
Center of Ventilation—Methods of Calculation Using Electrical Impedance Tomography and the Influence of Image Segmentation
TLDR
There might be statistically significant differences between the values obtained using different methods for calculation of CoV, and both investigated algorithms are relatively insensitive to the image segmentation.
Electrical impedance tomography measured at two thoracic levels can visualize the ventilation distribution changes at the bedside during a decremental positive end-expiratory lung pressure trial
TLDR
At the bedside, EIT measured at two thoracic levels showed different behavior between the caudal and cranial lung levels during a decremental PEEP trial, indicating that there is probably no single optimal PEEP level for all lung regions.
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