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Calculated PTV margin based on Van Herk formula (2.5 SD of systematic error +0.7 SD of random error)
| Right-left (mm) | Superior-inferior (mm) | Anterior-posterior (mm) | |
|---|---|---|---|
| pHART7 and 8 30 patients (VMAT) | 2.55 | 3.16 | 3.86 |
| pHART6 25 patients (IMRT) | 2.29 | 3.16 | 4.57 |
| Previous Study* (7Gy per fraction) IMRT | 1.40 | 4.40 | 5.20 |
*H. Quon et al. Clinical Oncology, Vol. 24, pp. 640-645, 2012.
