Erratum to: Abdom Imaging (2006) 31:514–520 DOI 10.1007/s00261-005-0218-7

This article was inadvertently published a second time under DOI: 10.1007/s00261-006-9117-9.

Official publication is under DOI: 10.1007/s00261-005-0218-7 in Abdom Imaging (2006) 31:514–520.