MR TRICKS technique application in lower extremity venous diseases of Klippel-Trenaunay syndrome / 实用放射学杂志

ABSTRACT

Objective To explore the clinical value of magnetic resonance time-resolved imaging of contrast kinetics (MR-TRICKS)in the assessment of lower extremity venous lesions in Klippel-Trenaunay syndrome (KTS).Methods Image data of 20 patients (total 21 affected limbs)diagnosed with KTS in our hospital were analyzed retrospectively.All patients underwent MR-TRICKS angiography and ascending phlebography of the lower extremities.The images acquired by these two methods were graded and compared.Kappa test was used to examine the consistency between the results of two inspection methods.Results The image quality of MR-TRICKS angiography and ascending phlebography graded on excellent proportion were 85.71％(18/21)and 80.95％(17/21)for the deep veins,95.24％(20/21)and 90.48％(19/21)for the superficial veins,and 90.48％(19/21)and 85.71％(18/21) for venous malformation,respectively.MR-TRICKS demonstrated that the deep veins were normal in 61.90％ (13/21),hypogenetic in 25.57％(7/21),atretic in 4.86％(1/21).Superficial vein diseases including varicosis of the great saphenous vein accounted for 25.57％(6/21), varicosis of the small saphenous vein accounted for 14.29％ (3/21 ),while marginal veins in venous malformation accounted for 100％ (21/21).Ascending phlebography of the lower limbs showed that the deep veins were normal in 57.14％(12/21)and dysplasia in 39.10％(8/21),while the other results were consistent with those of TRICKS.Consistency between results from the two methods were excellent (Kappa >0.75).Conclusion MR-TRICKS can accurately describe the angioarchitecture of the lower extremity vena in patients with KTS,and has an important clinical value in providing support for the assessment and treatment of KTS.