Perfusion Assessment Using BOLD MRI and PBV in Endovascular Treatment of Peripheral Arterial Occlusive Disease

Inclusion Criteria: * Subject has been diagnosed as PAOD by symptom and imaging; * Subject intends to take endovascular treatment in PUMCH; * Subjects without heavy stenosis in infrapopliteal artery (stenosis\<30%), or with short length lesion(length≤5cm, stenosis≥30%); * Age \> 35 and \< 80; * Subject has been informed the study and has signed informed consent; Exclusion Criteria: * Subject with MRI contraindications or allergic to iodinated contrast medium; * Subject underwent intervention therapy or angioplasty in target vessel within the last 3 months; * Subject after stent implantation in superficial femoral artery; * Subject with severe heart dysfunction, renal dysfunction, or cancer;