Table 3. Reproducibility of compartmental vBMD and compartmental tissue volume.
| Parameters | CVRMS (%) | Absolute precision errors |
|---|---|---|
| Compartmental vBMD | ||
| Mean integral femur vBMD | 0.89 | 2.200 mg/cm3 |
| Mean integral head vBMD | 0.96 | 2.217 mg/cm3 |
| Mean integral neck vBMD | 1.27 | 3.626 mg/cm3 |
| Mean integral trochanter vBMD | 0.96 | 2.416 mg/cm3 |
| Mean trabecular bone neck and trochanter vBMD | 1.34 | 1.171 mg/cm3 |
| Mean cortical bone neck and trochanter vBMD | 1.04 | 6.941 mg/cm3 |
| Mean trabecular bone neck vBMD | 1.66 | 1.528 mg/cm3 |
| Mean cortical bone neck vBMD | 1.33 | 8.911 mg/cm3 |
| Mean trabecular bone trochanter vBMD | 1.30 | 1.135 mg/cm3 |
| Mean cortical bone trochanter vBMD | 1.02 | 6.810 mg/cm3 |
| Compartmental tissue volume | ||
| Integral femur volume | 0.20 | 277.865 mm3 |
| Integral neck and trochanter volume | 0.27 | 230.849 mm3 |
| Cortical neck and trochanter volume | 0.98 | 181.303 mm3 |
| Integral neck volume | 0.44 | 65.389 mm3 |
| Cortical neck volume | 1.82 | 63.078 mm3 |
| Integral trochanter volume | 0.26 | 188.549 mm3 |
| Cortical trochanter volume | 1.05 | 159.000 mm3 |
CVRMS, root mean square coefficients of variation; vBMD, volumetric bone mineral density. N=22 scan-rescan pairs with repositioning (all from site C; 8 pairs from manufacturer A, 14 pairs from manufacturer B).