ArticlePhysiological measurement2015
Estimating a regional ventilation-perfusion index.
Article in Physiological measurement, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
6 citing papers in PubMed.
- Feasibility of Electric Impedance Tomography in the Assessment of Lung Perfusion and Ventilation in Congenital Pulmonary Vein Stenosis.Pediatric cardiology · 2026Article
- Electrical impedance tomography imaging of ventilation and perfusion in bronchopulmonary dysplasia.Journal of perinatology : official journal of the California Perinatal Association · 2026Article
- Use of an anatomical atlas in real-time EIT reconstructions of ventilation and pulsatile perfusion in preterm infants.Scientific reports · 2025Article
- The ACE1 Electrical Impedance Tomography System for Thoracic Imaging.IEEE transactions on instrumentation and measurement · 2019Article
- Estimating regions of air trapping from electrical impedance tomography data.Physiological measurement · 2018Article
- Evaluation of surrogate measures of pulmonary function derived from electrical impedance tomography data in children with cystic fibrosis.Physiological measurement · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
Abstract
This is a methods paper, where an approximation to the local ventilation-perfusion ratio is derived. This approximation, called the ventilation-perfusion index since it is not exactly the physiological ventilation-perfusion ratio, is calculated using conductivity reconstructions obtained using electrical impedance tomography. Since computation of the ventilation-perfusion index only requires knowledge of the internal conductivity, any conductivity reconstruction method may be used. The method is explained and results are presented using conductivities obtained from two EIT systems, one using an iterative method and the other a linearization method.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.