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Heart Disease (Expert Forum)
angiogram
Answered by
Cleveland Clinic - Heart
Cleveland - OH
This forum is for questions and support regarding heart issues such as: Angina, Angioplasty, Arrhythmia, Bypass Surgery, Cardiomyopathy, Coronary Artery Disease, Defibrillator, Heart Attack, Heart Disease, High Blood Pressure, Mitral Valve Prolapse, Pacemaker, PAD, Stenosis, Stress Tests.
Doctor's Answer
by Cleveland Clinic, May 09, 2008 08:48PM
, May 09, 2008 08:48PM
Iodine in contrast agents is a very heavy element and causes the x ray beams which are sent through your body during a heart catheterization, to be deflected away from the camera. That is why the blood vessels are dark, ie they are opacified with contrast and conduct radiation worse than the surrounding tissue. That is the general principle.
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The iodine changes the color of the veins - allowing a specialist to examine any corrupt or damages areas.