Inclusion Criteria:  Scheduled endovascular treatment of a lesion in the SFA through placement of a bare metal or a covered stent A recently (<6 weeks) treated lesion in the SFA through placement of a bare metal or a covered stent  Exclusion Criteria:  Hypersensitivity to the active substance(s) or any of the excipients in SonoVue Right-to-left cardiac shunt Severe pulmonary hypertension (pulmonary artery pressure > 90mmHg) Uncontrolled systemic hypertension Adult respiratory distress syndrome Severe pulmonary disease (e.g. COPD GOLD 3/4, adult respiratory distress syndrome) Clinically unstable cardiac disease (recent or ongoing myocardial infarction, unstable angina at rest, recent percutaneous coronary intervention, clinically worsening cardiac symptoms, severe cardiac arrythmia's, endocarditis, etc.) Prosthetic valves Loss of renal function (GFR < 31 ml/min), end-stage renal disease End-stage liver disease Sepsis Hypercoagulable status, recent thrombosis Congestive heart failure (class III or IV) Hypersensitivity to iodinated contrast media Pregnancy