Editing Tetralogy of Fallot (section)

=== Echocardiogram ===
Congenital heart defects are now diagnosed with [[echocardiography]], which is quick, involves no radiation, is very specific, and can be done prenatally.<ref>{{Cite web|title=Congenital Heart Defects {{!}} National Heart, Lung, and Blood Institute (NHLBI)|url=https://www.nhlbi.nih.gov/health-topics/congenital-heart-defects#Signs,-Symptoms,-and-Complications|access-date=2019-02-01|website=www.nhlbi.nih.gov|archive-date=2018-10-22|archive-url=https://web.archive.org/web/20181022221210/https://www.nhlbi.nih.gov/health-topics/congenital-heart-defects#Signs,-Symptoms,-and-Complications|url-status=live}}</ref>

[[Echocardiography]] establishes the presence of TOF by demonstrating a VSD, RVH, and aortic override. Many patients are diagnosed prenatally. Color Doppler (type of echocardiography) measures the degree of pulmonary stenosis. Additionally, close monitoring of the ductus arteriosus is done in the neonatal period to ensure that there is adequate blood flow through the pulmonary valve.<ref name="Francois_2016" /><ref name="Abdulla_20112" />{{rp|171–172}}

In certain cases, coronary artery anatomy cannot be clearly viewed using echocardiogram. In this case, cardiac catheterization can be done.<ref name="Munoz_2010" />{{rp|37, 201}}