Comparative diagnosis of venous occlusive diseases of lower extremity through multi-slice CT angiography and DSA

Objective: To assess the clinical application value of multi-slice CT angiography(MSCTA) in the diagnosis of venous occlusive diseases of lower extremity. Methods: Thirty-two suspected patients with venous occlusive diseases of lower extremity underwent 16-slice MSCTA and DSA simultaneously. The MSCTA technique and its diagnostic value were analyzed with clinical data. Results: Thirty-two cases of suspected lower extremity venous occlusive diseases were diagnosed by MSCTA, including 19 cases of iliac vein compression syndrome (left iliac vein in 16 cases, right iliac vein 3 cases). Nine cases of deep vein thrombosis (2 on left side, 5 on right and another 2 bilaterally). The left external iliac vein was compressed by a cyst in left inguinal region in one case and another case showed simple varicosis of superficial veins of the left lower limb. The results were similar demonstrated by DSA and MSCTA in above thirty cases. The right femoral and popliteal venous dilatations were diagnosed by MSCTA in one case and no abnormality in the other. The two cases were found to be valvular functional defect of deep veins of lower limb by DSA. Conclusion: MSCTA possesses rather high application value in the diagnosis of venous occlusive diseases of lower extremity. (authors)