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Table 2 Dice similarity coefficient of GTVCONV and GTVMAR for each pair and all four observers

From: Impact of metal artifact reduction algorithm on gross tumor volume delineation in tonsillar cancer: reducing the interobserver variation

Observer

GTVCONV (Mean ± SD)

Range

GTVMAR (Mean ± SD)

Range

A and B

0.71 ± 0.10

0.50–0.82

0.75 ± 0.10

0.49–0.84

A and C

0.76 ± 0.10

0.53–0.89

0.80 ± 0.10

0.63–0.87

A and D

0.75 ± 0.10

0.50–0.86

0.81 ± 0.10

0.48–0.89

B and C

0.71 ± 0.10

0.52–0.84

0.73 ± 0.10

0.51–0.87

B and D

0.75 ± 0.11

0.43–0.87

0.76 ± 0.11

0.47–0.87

C and D

0.76 ± 0.10

0.51–0.86

0.80 ± 0.10

0.58–0.91

All observers

0.74 ± 0.10

0.43–0.89

0.77 ± 0.10

0.47–0.91

  1. GTVCONV gross tumor volume delineated based on conventional CT images, SD standard deviation, GTVMAR gross tumor volume delineated based on the combination of conventional and metal artifact reduction CT images