Used to evaluate wall motion and structural abnormalities. 
No preparation required. 
This test takes 30 minutes to complete.

With Contrast:  This helps visualize the myocardium in sub-optimal studies.  Patient will have an IV and receive an injection of contrast agent.  This test takes 45 minutes to complete.

Saline Bubbles:  This helps in assessing septal defects.  No preparation required.  This test takes 45 minutes to complete.