Fig. 2
From: Feasibility of the dynamic EIT technique for non-invasive monitoring of V/Q: a preliminary study
EIT data acquisition in the supine position. (A) Corresponding change curves of global boundary voltage (GBV) and photoplethysmographic volumetric tracings (PPG) for lung ventilation and lung perfusion; (B) Changes in GBV, PPG during three consecutive heartbeat cycles at end-expiration during breath-hold; (C) Delineation of regions of interest, where red boxes indicate cardiac regions and blue boxes indicate pulmonary regions.
