How Do You Trace the Flow of Blood Through the Heart?

How Do You Trace the Flow of Blood Through the Heart?

How Do You Trace the Flow of Blood Through the Heart?

The flow of blood through the heart can be traced by injecting a dye into the arteries through a procedure known as an angiogram. Another procedure, cardiac catheterization, involves using a catheter to inject the dye. Magnetic resonance angiography or MRA, uses MRI technology.

X-ray images reveal the narrow spots or blockages in the arteries, which are highlighted by the dye. CT coronary angiograms involve injecting a contrast dye into the arteries intravenously during a computerized tomography, or CT scan. The details obtained through MRA are not as clear as those provided by cardiac catheterization. If there is a blockage that requires treatment, a mesh tube or stent is used to keep the artery open.