2Keogan MT,Edelman RR.Technologic advances in abdominal MR imaging.Radiology,2001,220(2):310-320.
3Kreft B,Stunk H,Flaeke S,et al.Detection of thrombosis in the portal venous system:comparison of contrast-enhanced MR angiography with intraarterial digital subtraction angiography.Radiology,2000,216(11):86-92.