- block_20
- block_minus_sphere
- crystal_ring_100
- crystal_ring_8
- cylinder_5x20
- hollow_sphere
- iec_body_profile
- mini_nema
- nema_iec
- nested_cylinders_5
- pet_scanner_crystals_only
- pet_scanner_full
- scale_variance_test
- scanner_plus_voxelgrid
- scanner_simplified
- sphere_10
- swiss_cheese
- two_cylinders
- voxelgrid_cubes