Table 1.

The five feature subsets in Gradient3D.

Feature name	Modality	Cube size
GM	Flair, T1, T1c, T2	–
rMean	Flair, T1, T1c, T2	3, 5, 7
rVar	Flair, T1, T1c, T2	3, 5, 7
seqMean	all modalities	3, 5, 7
seqVar	all modalities	3, 5, 7