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This is a multi-center, prospective registry of patients with intermediate coronary lesions defined as a stenosis of 40-80% by angiography. Approximately 300 patients will be enrolled into the study at sites in the United States and Europe. There will be no follow up beyond hospital discharge in this study. A sub-group of 30 patients will undergo Adenosine MRI. The investigators hypothesize that Intravascular Ultrasound Radiofrequency (IVUS RF) anatomical criteria, such as minimal luminal area, plaque burden and virtual histology plaque type, can predict physiological ischemia by Fractional Flow Reserve (FFR).
Patients undergoing cardiac catheterization must meet clinical inclusion and exclusion criteria and sign an informed consent. At the time of catheterization the patients will be further analyzed for eligibility using angiographic inclusion and exclusion criteria. Patients who fulfilled the clinical and angiographic criteria will undergo further imaging evaluation using an IVUS RF catheter (Volcano Therapeutics) and FFR wire (Radi or Volcano). The decision for treatment of any lesion will be at the operator's discretion. For patients enrolled at Washington Hospital Center and do not undergo percutaneous coronary intervention, an assessment with non invasive perfusion adenosine MRI also be performed.
Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Diagnostic
Coronary Artery Disease
FFR and IVUS RF, FFR and IVUS RF and MRI
Not yet recruiting
Published on BioPortfolio: 2014-08-27T03:12:32-0400
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