Erratum to: Abdom Imaging (2006) 31:549–554 DOI 10.1007/s00261-005-0251-6

This article was inadvertently published a second time under DOI: 10.1007/s00261-006-9024-0.

Official publication is under DOI: 10.1007/s00261-005-0251-6 appearing in Abdom Imaging (2006) 31:549–554.