Fig. 4
From: Quantifying the reduction of respiratory motion by mechanical ventilation with MRI for radiotherapy
Diaphragm position variation in consecutive Deep Inspiration Breath-holds (DIBH). A Boxplots of inter-quartile ranges (IQR) of the diaphragm displacements of MRI1, MRI2 and both MRI sessions pooled. Diaphragm displacement variation did not significantly differ between MRI sessions MRI1 and MRI2. Boxes: median value and lower and higher quartiles, whiskers: lowest and highest data point within 1.5 times the inter-quartile range, ‘x’ denotes the mean value. B Diaphragm displacements with respect to the median DIBH diaphragm position during five consecutive DIBHs in two MRI sessions (MRI1 and MRI2) per volunteer. Note that for V11 in MRI2, six DIBH scans were available and analyzed