Two-plane EIT may improve lung ventilation mapping in horses
A new Equine Veterinary Journal study reports that using thoracic electrical impedance tomography, or EIT, with two planes of electrodes gives a more vertically uniform picture of ventilation in horses than the standard one-plane setup. The work, by Nicole Studer and colleagues, combined computational modeling with in vivo testing in 20 horses and found the two-plane configuration improved representation of peripheral lung fields, addressing a known limitation of conventional single-plane EIT, which produces a two-dimensional image from a lens-shaped slice of thorax. Broader veterinary EIT guidance has already flagged two-plane imaging as an important development because it captures a greater craniocaudal volume of tissue and can support reconstruction into multiple slices or 3-D views. (pubmed.ncbi.nlm.nih.gov)
Why it matters: For equine clinicians and researchers, the study points to a way of getting lung-function information that may better reflect the anatomy of the whole thorax, especially in peripheral and caudal regions that matter in conditions such as equine asthma, anesthesia-related atelectasis, and exercise-associated respiratory disease. EIT is attractive because it is non-invasive, radiation-free, and portable, but interpretation depends heavily on electrode placement and reconstruction methods; the 2022 veterinary consensus statement specifically called for standardized reporting of system details, electrode number, and plane position so results can be compared across studies. A more anatomically representative setup could improve confidence in serial monitoring, research endpoints, and eventually bedside decision-making, though adoption will still depend on validation in horses with clinical lung disease. (frontiersin.org)
What to watch: The next step is whether two-plane EIT moves from validation work in healthy or sedated horses into larger studies in clinical respiratory cases, and whether manufacturers and research groups standardize protocols enough for broader field use. (pubmed.ncbi.nlm.nih.gov)