Turning of write-behind solves it. -- Marc Geerlings Application Manager Research Department of Radiology Maastricht University Medical Center P.O. Box: 5800, 6202 AZ Maastricht, The Netherlands P. Debyelaan 25 6229 HX, Maastricht Room: 0.C1.037 Tel. + 31 43 ? 387 49 50 Fax. + 31 43 ? 387 69 09 email: m.geerlings at mumc.nl m.geerlings at maastrichtuniversity.nl