Technical Development of Cardiovascular Magnetic Resonance
Imaging The goal of this study is to develop advances in
cardiovascular diagnostic and treatment methods using magnetic
resonance imaging (MRI), a test that uses a strong magnetic
field and radio waves to show anatomic detail. For the scan, the
patient lies on a table in a cylinder containing a magnetic
field. He or she can communicate with a staff member at all
times during the procedure. Patients 18 years of age or older
who require 1) catheterization of the leg arteries for diagnosis
or treatment of blocked arteries, or 2) heart catheterization
for diagnosis or treatment of coronary artery disease or other
heart problems may be eligible for this study. Participants will
undergo one of the following procedures: Blood Flow Measurement
Using Standard Techniques and MRI For patients with blockage in
a leg artery, blood flow will be measured before and after
successful catheter-based treatment (angioplasty or stenting)
using standard venous occlusion pl