Fig. 5From: Ventilation and perfusion MRI at a 0.35 T MR-Linac: feasibility and reproducibility studyExemplary ventilation-(Vw) and perfusion-weighted (Qw) maps. The unnormalized V- and Q-maps for the normal (NB 2) and the first irregular breathing scan (IB, deep breathing) exemplarily presented for the aorta slice of Volunteer 4. The heart and large vessels were excluded from the segmentation of the Vw-maps. The maps were Gaussian filtered and logarithmically plottedBack to article page