Fig. 2
From: Segmentation of vestibular schwannoma from MRI, an open annotated dataset and baseline algorithm
Comparison of the two contour discretization approaches. Both binary tumour labelmaps are obtained from original contours drawn on T1 slices overlaid on the (non-coinciding) T2 image slices of subject 182. Blue contours are the result of direct discretization in the T2 space from the original T1-aligned contours saved in the JSON files. Green labelmaps are the result of discretisation of the interpolated T2-slice-aligned contours saved in the RTSS.dcm files. In this worst-case example, the discretization of the interpolated contours results in a binary labelmap that misses the first and last slice compared to the labelmap obtained from the original contours. Intermediate slices are hardly affected by the interpolation and discretization strategy.
