A ventriculogram is a test done during cardiac catheterization that evaluates the main pumping chamber of your heart (left ventricle).

During a ventriculogram, your doctor injects a dye into your heart that makes the inside of your heart show up on X-ray. The images are recorded on film or on a computer.

A ventriculogram can show:

• The movement of your heart muscle as your left ventricle fills and pumps blood.
• The size of your left ventricle.
• How efficiently your left ventricle pumps blood (ejection fraction).
• How well blood flows through your heart valves (aortic and mitral valves).