These shapes were generated to validate a distance transform function implemented for the Python ORMIR_XCT package. Shapes generated include: solid spheres, solid cylinders, hollow spheres, hollow cylinders, and plates. All shapes have a voxel size of 1 mm^3. Image naming convention is as follows: Solid (filled) Spheres: F_SPH_OUTR_X.nii Radius of the sphere = X Solid (filled) Cylinders: F_CYL_OUTR_X_LEN_Y.nii Radius of the cylinder = X Length of the cylinder = Y Hollow Spheres: H_SPH_OUTR_X_INR_Y.nii Outer radius of the sphere = X Inner radius of the sphere = Y Hollow Cylinders: H_CYL_OUTR_X_INR_Y_LEN_Z.nii Outer radius of the cylinder = X Inner radius of the cylinder = Y Length of the cylinder = Z Plates: PLATE_WIDTH_X_LEN_Y.nii Width (i.e., thickness) of the plate = X Length of the plate = Y (plates are all squares)