From: 4DCT and CBCT based PTV margin in Stereotactic Body Radiotherapy(SBRT) of non-small cell lung tumor adhered to chest wall or diaphragm
Author
Region
Recipe
Stroom et al.(1999a) [26]
PTV
2∑ + 0.7σ
Van Herk et al.(2000) [27]
2.5∑ + 0.7σ
Parker et al. (2002) [28]
\( \sum +\sqrt{\left({\sigma}^2+{\sum}^2\right)} \)
Snoke JJ (2007)
2.5∑ + β(σ 2 + σ 2 P )1/2 − βσ P