Magnetic Resonance Imaging to Detect Blood Vessel Inflammation in Patients Undergoing Peripheral Balloon Angioplasty
This study will examine the use of magnetic resonance imaging (MRI) in detecting blood vessel inflammation. The results of this study may later be applied to diagnosing inflammation of arteries in patients with atherosclerosis, predicting disease progression in these patients, and guiding therapy.
Patients with peripheral artery disease (for example, blockage of a leg artery) undergoing balloon angioplasty at Suburban Hospital in Bethesda, Maryland, may be eligible to participate in this study. Because this procedure, which opens blocked arteries, can cause inflammation in the vessel wall, it affords an opportunity for studying MRI detection of such inflammation.
Study candidates will be screened with a medical history and physical examination. Participants will have a MRI scan and blood drawn at Suburban Hospital before the angioplasty and again either 1 to 3 days or 2 weeks after the procedure. Before the MRI scan is begun, a catheter (a thin plastic tube) is inserted in an arm vein and 90 milliliters (about 3 ounces) of blood is drawn. The patient then lies on a table that slides into the MRI scanner-a large donut-shaped machine with a magnetic field. A flexible, padded sensor called an MRI coil is placed over the area to be imaged; this device is used to improve the quality of the pictures. During the scan a contrast material called gadolinium is injected through the catheter. Gadolinium brightens the image of the blood vessels. The procedure lasts up to 2 hours.
Peripheral Vascular Disease
Procedure: Magnetic resonance imaging
|Study Design:||Primary Purpose: Treatment|
|Official Title:||MRI Detection of Vascular Inflammation in Patients Undergoing Peripheral Angioplasty|
|Study Start Date:||January 2000|
|Estimated Study Completion Date:||January 2002|
Please refer to this study by its ClinicalTrials.gov identifier: NCT00004549
|United States, Maryland|
|National Heart, Lung and Blood Institute (NHLBI)|
|Bethesda, Maryland, United States, 20892|