Fig. 2From: Comparison of two devices for respiratory impedance measurement using a forced oscillation technique: basic study using phantom modelsPercentage ratio of resistance values measured with the impulse oscillometry system (IOS) and MostGraph (MG) devices. IOS, MG-pulse, and MG-noise values are compared to the estimated values of standard resistance. a Resistance of 0.196 kPa s/l. b Resistance of 0.402 kPa s/l. c Resistance of 0.951 kPa s/l. Plotted data are the mean values of three measurementsBack to article page