3-D printing 1 3D printers 1 3D printing 1 ABS 1 Air components 1 Article 1 Atomic composition 1 Atomic composition analysis 1 Atomic compositions 1 Atomic numbers 1 Atoms 1 Biological organs 1 Dosimetry 1 Lung 1 Lung tissue 1 Monte Carlo 1 Monte Carlo Method 1 Monte Carlo method 1 Monte Carlo methods 1 PLA 1 Pattern effect 1 Photons 1 Printing, Three-Dimensional 1 Radiometry 1 Tissue 1 argon 1 biomaterial 1 carbon 1 chemical composition 1 chlorine 1