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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2008 Sep 1;72(1):210–219. doi: 10.1016/j.ijrobp.2008.05.008

Table 2.

Absolute Euclidean surface-to-surface distance ± one standard deviation (mm) for head-and-neck cases

Contours from Scratch (mm)
 Modified Contours (mm)
Patient number L Parotid R Parotid L Parotid R Parotid CTV
1 0.8 ± 0.2 1.0 ± 0.1 0.0 ± 0.0 0.0 ± 0.0 0.3 ± 0.2
2 1.2 ± 0.2 1.1 ± 0.2 0.0 ± 0.0 0.0 ± 0.0 0.4 ± 0.2
3 1.4 ± 0.5 1.7 ± 0.2 0.0 ± 0.0 0.0 ± 0.0 0.4 ± 0.2
4 1.5 ± 0.2 1.0 ± 0.2 0.0 ± 0.0 0.0 ± 0.0 0.6 ± 0.2
5 1.2 ± 0.3 1.3 ± 0.4 0.1 ± 0.1 0.0 ± 0.1 0.1 ± 0.1
6 1.3 ± 0.3 0.9 ± 0.1 0.1 ± 0.1 0.2 ± 0.1 0.8 ± 0.5
7 2.0 ± 0.6 2.0 ± 1.3 0.0 ± 0.0 0.1 ± 0.1 0.1 ± 0.1
8 1.3 ± 0.2 1.3 ± 0.4 0.1 ± 0.1 0.2 ± 0.1 0.3 ± 0.1
Average 1.3 ± 0.3 1.3 ± 0.4 0.0 ± 0.0 0.1 ± 0.1 0.4 ± 0.2

Abbreviations L = left; R = right; CTV = clinical target volume