Magnetic Resonance Imaging to Detect Blood Vessel Inflammation in Patients Undergoing Peripheral Balloon Angioplasty

This study has been completed.
Sponsor:
Information provided by:
National Institutes of Health Clinical Center (CC)
ClinicalTrials.gov Identifier:
NCT00004549
First received: February 3, 2000
Last updated: March 3, 2008
Last verified: January 2002

February 3, 2000
March 3, 2008
January 2000
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Complete list of historical versions of study NCT00004549 on ClinicalTrials.gov Archive Site
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Magnetic Resonance Imaging to Detect Blood Vessel Inflammation in Patients Undergoing Peripheral Balloon Angioplasty
MRI Detection of Vascular Inflammation in Patients Undergoing Peripheral 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.

In this pilot study high resolution Magnetic Resonance Imaging (MRI) will be used to study 20 patients scheduled to undergo peripheral angioplasty in order to determine the MRI characteristics of acute and chronic vascular inflammation. The vascular territories to be angioplastied will be imaged in 20 patients with peripheral vascular disease prior to angioplasty. Patients will then be randomly assigned for imaging at 24-72 hours (10 patients) or imaging at 2-4 weeks (10 patients) post-angioplasty. Analysis will focus on paired comparisons between pre- and post-angioplasty data within each group. This study should provide data that can be applied to other research protocols designed to image inflammation associated with vascular injury and atherosclerosis.

Interventional
Phase 1
Endpoint Classification: Safety Study
Primary Purpose: Treatment
  • Atherosclerosis
  • Peripheral Vascular Disease
Procedure: Magnetic resonance imaging
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
20
January 2002
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Must have clinically significant peripheral arterial disease and be referred from their physician for peripheral vascular angioplasty in the Suburban Hospital Radiology department.

Must be capable of giving informed consent.

Must be at least 18 years of age.

Must not have a history of severe claustrophobia.

Must not have a history of involuntary motion disorder.

Must not have a serum creatinine level greater than 2.0 mg/dL.

Must not have cardiac pacemaker or implantable defibrillator, aneurysm clip, neural stimulator (e.g. TENS-Unit), any type of ear implant, or metal in the eye (e.g. from machining).

Must not have systemic inflammatory disorder (e.g. systemic lupus erythematosus, rheumatoid arthritis, polyarteritis nodosa, Reiter's Syndrome).

Must not have the placement of a metal stent in the region to be imaged at the time of angioplasty.

Both
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No
Contact information is only displayed when the study is recruiting subjects
United States
 
NCT00004549
000065, 00-H-0065
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National Heart, Lung, and Blood Institute (NHLBI)
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National Institutes of Health Clinical Center (CC)
January 2002

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP