8Umeoka S,Koyama T,Togashi K,et al.Vascular dilatation in the pelvis:identification with CT and MR imaging[J].Radiographics,2004,24(1):193～208.
9Michel S J,Fried AM,Sinha S,et al.Comparison of iodixanol with iohexol for delayed pelvic venous opacification:a preliminary study of potential use for CT venography[J].AJR Am J Roentgenol,2004,183(1):123～126.
