Erratum to: Abdom Imaging (2006) 31:507–513 DOI 10.1007/s00261-005-0183-1

This article was inadvertently published a second time under DOI: 10.1007/s00261-006-9115-y.

Official publication is under DOI: 10.1007/s00261-005-0183-1 in Abdom Imaging (2006) 31:507–513.