Figure 1.

Example of a 3D input multi-parametric Magnetic Resonance Imaging scan from the International Brain Tumor Segmentation (BraTS) challenge. From left to right all four input modalities are illustrated, including native T1-weighted (T1), T1 post-contrast (T1Gd), native T2-weighted (T2), and T2 Fluid Attenuated Inversion Recovery (T2-FLAIR), followed by the ground truth expert annotation of all three tumor sub-regions, provided as part of the BraTS dataset. From top to bottom three views (i.e., Axial, Coronal, Sagittal) of these 3D volumes are depicted to showcase the 3-dimensional nature of these scans.