Table 3.
Comparison of tiger vertebral microarchitectural parameters obtained with different CT scanners, matrix numbers, and slice thicknesses ex vivo
| Group | |||||||
|---|---|---|---|---|---|---|---|
| T1 | T2 | T3 | T4 | T5 | T6 | T7 | |
| CT scanner | CRCT | UHRCT | UHRCT | UHRCT | UHRCT | UHRCT | Micro-CT |
| Matrix number | 512 | 512 | 512 | 1024 | 1024 | 2048 | 2048 |
| Slice thickness (mm) | 0.5 | 0.5 | 0.25 | 0.5 | 0.25 | 0.25 | 0.06 |
| vBMD (mg/cm3) | 20.8 ± 8.6 | 37.7 ± 10.9 | 42.9 ± 12.5 | 46.2 ± 12.2 | 51.4 ± 12.4 | 63.5 ± 13.7 | 199.6 ± 25.5 |
| BV/TV (%) | 13.8 ± 6.2 | 20.2 ± 5.7 | 23.1 ± 5.7 | 24.5 ± 5.7 | 26.5 ± 5.2 | 29.5 ± 4.9 | 79.2 ± 6.7 |
| Tb.Th (μm) | 312.8 ± 58.8 | 208.1 ± 28.8 | 217.1 ± 21.7 | 196.3 ± 27.2 | 204.6 ± 22.3 | 200 ± 19.9 | 420 ± 56.6 |
| Tb.N (l/mm) | 0.47 ± 0.26 | 0.98 ± 0.27 | 1.06 ± 0.22 | 1.26 ± 0.3 | 1.3 ± 0.22 | 1.48 ± 0.23 | 1.91 ± 0.24 |
| Tb.Sp (μm) | 2671 ± 2040 | 892 ± 380 | 768 ± 253 | 637 ± 210 | 586 ± 146 | 489 ± 109 | 111 ± 40 |
| ConnD (l/mm3) | 0.02 ± 0.01 | 0.16 ± 0.07 | 0.31 ± 0.14 | 0.29 ± 0.14 | 0.52 ± 0.17 | 0.74 ± 0.17 | 1.36 ± 0.46 |
Data are means ± standard deviations
T1–T7 Tiger vertebra groups 1–7, CRCT Conventional resolution computed tomography, UHRCT Ultra-high-resolution computed tomography, vBMD Volumetric bone mineral density, BV/TV Trabecular bone volume fraction, Tb.Th Trabecular thickness, Tb.N Trabecular number, Tb.Sp Trabecular separation, ConnD Connectivity density