Table 4.
Radiographic and physical properties of 3D printed test objects containing 60% CaCO3 and various amounts of SrCO3 powder
| SrCO3 percent by mass of clear resin | Density [g/cm3] | Average measured HU (SD) |
|---|---|---|
| 0.0 | 1.46 | 751 (22) |
| 5.0 | 1.49 | 992 (39) |
| 7.5 | 1.52 | 1136 (39) |
| 10.0 | 1.53 | 1260 (48) |
| 12.5 | 1.55 | 1421 (60) |
| 15.0 | 1.57 | 1531 (70) |
| 17.5 | 1.57 | 1631 (75) |
| 20.0 | 1.59 | 1721 (80) |
| 22.5 | 1.60 | 1805 (89) |
| 25.0 | 1.61 | 1918 (98) |
CaCO3, calcium carbonate; SrCO3, strontium carbonate; HU, Hounsfield unit; SD, standard deviation.
HUs were measured using a clinical CT scanner (Somatom Definition Edge, Siemens) with 0.75 mm slice thickness, 120 kV tube potential, 350 mAs, reconstructed with B40s medium kernel.