Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40658-021-00396-1/MediaObjects/40658_2021_396_Fig4_HTML.png)
Influences of intensity gradient strenght (first row) and lung volumes (second row) on DicePE coefficients according to the segmentation methods. Using the RelDiff method with a − 50% threshold, there was no significant influence of the gradient strength and low influence of lung