Transesophageal Echocardiography (TEE) is an advanced diagnostic method used for the detailed evaluation of various conditions related to heart health. Its primary applications include: investigating the presence of blood clots or infections in the heart; evaluating the functionality of prosthetic heart valves; diagnosing ruptures of the main artery (aorta); examining congenital or acquired heart defects; determining the degree of heart valve insufficiency; assessing the success rates of surgical interventions such as heart valve operations or repairs for heart defects; and monitoring the diagnosis and treatment processes of congenital heart diseases.