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Table 4 CTV margin changes of NSCLC patients

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 Recipe Margin through set-up errors Margin through all variation
ML AP SI ML AP SI
Stroom et al. (1999a) [26] 2∑ + 0.7σ 0.55 0.57 0.99 0.72 0.79 2.18
van Herk et al. (2000) [27] 2.5∑ + 0.7σ 0.67 0.69 1.21 0.88 0.98 2.68
Parker et al. (2002) [28] \( \sum +\sqrt{\left({\sigma}^2+{\sum}^2\right)} \) 0.50 0.52 0.90 0.66 0.75 2.06
Snoke JJ (2007) 2.5∑ + β(σ 2 + σ P 2 )1/2 − βσ P 0.60 0.64 1.09 0.82 0.93 2.57