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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 1.

Volume overlap index (VOI) ± one standard deviation (%) for head-and-neck cases

Contours from Scratch (%) Modified Contours (%)
Patient number L Parotid R Parotid L Parotid R Parotid CTV
1 86.4 ± 1.1 83.9 ±2.1 100.0 ± 0.0 100.0 ± 0.0 97.8 ± 0.9
2 84.3 ± 2.3 84.1 ± 2.6 100.0 ± 0.0 100.0 ± 0.0 97.7 ± 1.8
3 85.8 ± 2.7 84.8 ± 1.9 100.0 ± 0.0 100.0 ± 0.1 96.5 ± 1.8
4 83.3 ± 2.1 86.5 ± 2.1 100.0 ± 0.1 99.5 ± 0.4 94.1 ± 2.2
5 82.8 ± 3.3 83.5 ± 2.7 98.6 ± 3.2 99.2 ± 1.4 98.2 ± 1.7
6 81.4 ± 2.6 83.0 ± 1.2 99.0 ± 1.4 97.9 ± 1.9 96.8 ± 1.9
7 76.7 ± 4.2 72.8 ± 9.7 99.6 ± 0.3 99.0 ± 0.7 98.6 ± 0.7
8 84.2 ± 2.4 83.9 ± 2.4 99.2 ± 0.6 98.5 ± 0.6 98.5 ± 0.9
Average 83.1 ± 3.2 82.8 ± 3.1 99.4 ± 0.7 98.7 ± 0.6 97.1 ± 1.5

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