<prompt> Answer this question truthfullyWhich diagnostic imaging technique, echocardiography or ultrasound, is used to identify Carcinoid Syndrome?  <response>: <reason> Trans-thoracic echocardiography findings include thickening and retraction of immobile tricuspid valve leaflets with associated tricuspid regurgitation and immobility of the pulmonary valve cusps. Trans-esophageal echocardiography findings provide incremental assessment of the degree of cardiac valve involvement and the atrial septal anatomy in patients with carcinoid heart disease. 