Fig. 4
Image smoothness (S) determination. Left shows the sagittal reconstruction of the 3D volume of bin6 of volunteer 11. Right shows the relative position of the diaphragm border with respect to the first slice (open circles) together with the corresponding parabola fit. Residual errors are shown as vertical lines. a shows a good S (= R2adj averaged over all respiratory bins) of 0.91 reconstructed with the Min95 binning strategy, b shows the Phase binning strategy with a poor S of 0.64