conversion from DenseBrainVolume to arrayconversion from SparseBrainVolume
to array
conversion from SparseBrainVolume to numeric
conversion from BrainVolume to LogicalBrainVolume
conversion from DenseBrainVolume to LogicalBrainVolume
conversion from ClusteredBrainVolume to LogicalBrainVolume
conversion from BrainVolume to array