Materials and methods: 54 Percutaneous Transluminal Popliteal Venography (PTPV) were done in 45 patients, functions of 195 pairs of venous valvular in superficial and popliteal venous were evaluated.
材料与方法：45例患者，54条下肢经穿造影，共检测股浅—静脉中195对瓣膜的4种功能（正常、轻度、中度、重度损害）。
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