I think that the current code for processing labels should be fixed.

[Crispy13]

According to "https://www.med.upenn.edu/sbia/brats2018/tasks.html":

The TC describes the bulk of the tumor, which is what is typically resected. The TC entails the ET, as well as the necrotic (fluid-filled) and the non-enhancing (solid) parts of the tumor. The appearance of the necrotic (NCR) and the non-enhancing (NET) tumor core is typically hypo-intense in T1-Gd when compared to T1. The WT describes the complete extent of the disease, as it entails the TC and the peritumoral edema (ED), which is typically depicted by hyper-intense signal in FLAIR.

So i think that the current code for processing labels should be fixed. For example, tumor core label should consist of both 1 and 4.