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Some heart problems occurs only during exercise. Ultrasound images of your heart are taken before and after exercise.
When sound waves bounce off blood cells moving through your heart and blood vessels, they change pitch. This is called Doppler signals. Doppler signal is used to measure the speed and direction of the blood flow in your heart.
Types of Echocardiogram
A flexible tube containing a transducer is guided down your throat and into your esophagus. The transducer can obtain detailed images of your heart.
A sonographer spreads gel on your chest and then presses a transducer against your skin, aiming an ultrasound beam through your chest to your heart. The transducer records the sound wave echoes as they reflect off internal structures. A computer converts the echoes into moving images on a monitor.