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Errors and margins associated with intraobserver shift differences between kV-FM and ST-CBCT (mm)
| A-P | L-R | S-I | |
|---|---|---|---|
| ΔShiftkV-CBCT ± SD | 0.3 ± 3.8 | −1.1 ± 8.5 | −2.0 ± 3.7 |
| Mean Error (M) | 0.5 | −0.3 | −2.3 |
| Systematic Error (Σ) | 1.0 | 1.3 | 3.2 |
| Random Error (σ) | 3.4 | 2.9 | 2.2 |
| Margins | 4.8 | 5.4 | 9.5 |
A-P, anterior-posterior; kV-FM, kV orthogonal imaging with fiducial markers; L-R, left-right; S-I, superior-inferior; SD, standard deviation; ST-CBCT, soft-tissue cone beam computed tomography.
