Correction to: European Journal of Nuclear Medicine and Molecular Imaging

https://doi.org/10.1007/s00259-017-3899-6

The formulae for Dice and Jaccard indices used to assess volumes concordance should read as follows:

$$ {\displaystyle \begin{array}{l} Dice\kern0.5em index=\frac{2\times \left({VOI}_{\mathbf{1}}\cap {VOI}_{\mathbf{2}}\right)}{VOI_{\mathbf{1}}+{VOI}_{\mathbf{2}}}\\ {} Jaccard\kern0.5em index=\frac{VOI_{\mathbf{1}}\cap {VOI}_{\mathbf{2}}}{VOI_{\mathbf{1}}\cup {VOI}_{\mathbf{2}}}\end{array}} $$

Where ∩ and ∪ represent the intersection and the union of two VOIs, respectively.

The original article has been corrected.