Fig 1.
High-spatial-resolution slab printed using a three-dimensional (3D) printer.
Fig 2.
Low-contrast detectability slab.
Fig 3.
Slab with a 3D grid with equal spacing.
Fig 4.
Computed tomography (CT) simulator module: A. high-spatial-resolution slab; B. low-contrast detectability slab; C. water-filled uniformity slab.
Fig 5.
Magnetic resonance imaging module connected to a piezoelectric motor.
Fig 6.
Inserting the ion chamber in the centre cavity for dose verification.
Fig 7.
Image quality module.
Fig 8.
CT image of the high-spatial-resolution slab.
Fig 9.
CT image of the low-contrast detectability slab.
Fig 10.
CT image of the water-filled uniformity slab.
Table 1.
Summary of the measured CT number using the water-filled uniformity slab.
Fig 11.
CT image of the wax-filled uniformity slab.
Table 2.
Summary of measured CT number using the wax-filled uniformity slab.
Fig 12.
CT image of the silicone-filled uniformity slab.
Table 3.
Summary of measured CT number using the silicone-filled uniformity slab.
Fig 13.
Cone-beam computed tomography (CBCT) images of the water-filled uniformity slab.
Table 4.
Analysis of the uniformity slab filled with different materials.
Fig 14.
CBCT images of the high-spatial-resolution slab.
Fig 15.
CBCT images of the low-contrast detectability slab.