Table 1.
The characteristics of the Polyjet and digital light projection (DLP) 3D printers.
Fig 1.
Diagram of the workflow framework that we followed for producing 3D printed spine-shaped phantom from CT data.
Fig 2.
(a) Acrylic body phantom (b) 3D printed spine phantom generated by the DLP technique (left) and the Polyjet technique (right) fixed to a cylindrical phantom with carrageenan (c) Top view of the developed 3D printed spine quality assurance (QA) phantom, which consists of five slabs (d) Front view of the developed 3D printed spine QA phantom
Fig 3.
The result of image fusion.
Table 2.
The mean and standard deviation of the HU values from the spine body for the different 3D printing techniques and for the different patient ages.
Table 3.
Summary of the dosimetric results for the planning target volume (PTV) and organs at risk (OAR) for treatment planning using two different 3D printed phantom image sets.
Fig 4.
Dose volume histogram for the planning target volume (PTV) and organs at risk (OAR) from 3D printed spine phantom sets (solid line for digital light projection (DLP) printed phantom, and dotted line for Polyjet printed phantom) from spine stereotactic body radiation therapy (SBRT) treatment plans.