Erratum to: J Digit Imaging (2011) 24:999–1009

DOI 10.1007/s10278-011-9376-z

The author inadvertently omitted the following reference from the article:

Preprocesado y registro de imágenes médicas portal con radiografías reconstruidas digitalmente / Portal Medical Images Preprocessing and Registration with Digitally Reconstructed Radiographies. Available at http://repositorio.bib.upct.es/dspace/handle/10317/1838. Accessed May 2010.

The originally omitted reference corresponds to a preliminary work of the article published in Journal of Digital Imaging.