This article [J. Med. Imag. 2(3), 033502 (2015)] was originally published online on 11 September 2015 with an error on p. 3. At the bottom of the left column, the formula $\sigma =135\mathrm{keV}$ has been replaced by $\sigma =1.35\mathrm{keV}$.

On p. 8, Fig. 8 is wrong due to the miscalculated Hounsfield unit for these bin images. The correct figure is reproduced below.

Fig. 8

Reconstructed bin images of energy bin 1, bin 5, and bin 8. (a) are the bin images reconstructed from the raw projection data that are normalized by flat fielding using an air scan. (b) are the bin images reconstructed from the projection data that are processed with the inhomogeneity compensation method. All images are normalized to HU measured in the water insert.

This article was corrected online on 14 October 2016.