Contrast Ultrasound in the Surveillance of Endovascular Abdominal Aortic Aneurysm Repair

Contrast Ultrasound in the Surveillance of Endovascular Abdominal Aortic Aneurysm Repair

The purpose of this study is to support the suspected expectation that Contrast enhanced Ultrasound (CUS) detects all endoleaks that have been detected by Computed Tomography (CT), and also find a number of leaks missed by CT.

The investigators' primary goal is to detect no difference between CT and CUS and provide evidence that CUS is a possible alternative to CT.

Inclusion Criteria:

• All patients who underwent EVAR at The Ottawa Hospital and currently under post-EVAR surveillance at The Ottawa Hospital.

Exclusion Criteria:

• Unable to consent for injection of contrast
• Unable to acquire IV access
• Right-to-left, bi-directional, or transient right-to-left cardiac shunts
• Severe pulmonary disease
• Previous hypersensitivity to DEFINITY® or its components
• Unable to be followed as a outpatient by the Vascular Diagnostic Center