There are several different types of echocardiograms, including:   - Transthoracic echocardiogram (TTE): The most popular type of echocardiogram is a transthoracic echocardiogram, which uses a transducer to produce images of the heart through the chest wall while being applied to the patient's chest. - Transesophageal echocardiogram (TEE): To gain closer and more precise images of the heart, this test involves inserting a small, flexible tube with a transducer into the patient's esophagus. - Doppler echocardiogram: This type of echocardiogram uses sound waves to measure the speed and direction of blood flow through the heart and blood vessels. - 3D echocardiogram: This type of echocardiogram uses advanced technology to create a 3D image of the heart, which can provide more detailed information about its structure and function. - Stress echocardiogram: To assess how the heart responds to stress, this test combines an echocardiogram with physical activity or medication. - Contrast echocardiogram: This type of echocardiogram uses a contrast dye to make the heart's structures easier to observe. - Bubble echocardiogram: Heart structure is tested by injecting a saline solution with microbubbles into a vein. The bubbles travel to the heart and appear on the echocardiogram if a hole is present. - Fetal echocardiogram: This type is used to evaluate the heart of a developing fetus during pregnancy.