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(a) 3D magnetic resonance image presented as a tri-planar cross-section, with over-imposed ventricles (red) and tumor (blue) segmentations. (b) 3-D patient-specific meshless discretization. The integration points are indicated as (+) and interpolating nodes — as (⚫) for the brain parenchyma, (⚫) for the ventricles, and (⚫) for the tumor. Regular hexahedral background integration grid was used [14].
