Abstract Background: Triple rule-out (TRO) computed tomography angiography (CTA) is an ECG-gated protocol that enables the simultaneous evaluation of the coronary arteries, thoracic aorta, and pulmonary arteries in a single scan. It is especially useful for patients in the emergency department with low to moderate risk of acute coronary syndrome, particularly when aortic dissection and pulmonary embolism are also considered in the differential diagnosis. Objective: This study aimed to compare two TRO protocols, fully electrocardiogram (ECG)-gated (protocol A) and partially […]