Table 2. Statistical values of DMA between reconstructed markers and the corresponding numerical model.
| Variable | Standard CT | Dual energy CT | Cone-beam CT |
|---|---|---|---|
| Max deviation (+) | 1.57±0.30 | 1.98±0.61 | 1.18±0.32 |
| Max deviation (–) | −0.39±0.17 | −0.44±0.22 | −0.47±0.27 |
| Mean (+) | 0.62±0.11 | 0.78±0.20 | 0.39±0.08 |
| Mean (–) | −0.12±0.05 | −0.14±0.06 | −0.11±0.07 |
| SD | 0.37±0.09 | 0.59±0.22 | 0.36±0.18 |
| RMS | 0.68±0.13 | 0.88±0.21 | 0.46±0.11 |
Values (mean ± standard deviation over the six markers) are all in millimetres. CT, computed tomography; DMA, distance map analysis; SD, standard deviation; RMS, root mean square.