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Cardiology | Cardiovascular System | Medical Anatomy | Medicine and Health Sciences


Background: Transposition of the Great Vessels (TGV) is a congenital heart defect (CHD) in which the great vessels are reversed – the aorta arises off of the right ventricle and the pulmonary trunks arises off the left ventricle. The Mustard Procedure and the Arterial Switch Operation (ASO) are two primary examples of surgical correction approaches that have been used for patients with TGV without other congenital anomalies. This project aims to present 3D visual reconstructions of these two approaches, to compare the final anatomy of the heart post-surgery, and to better understand why the ASO has been the preferred method over the Mustard procedure since 1975. Methods: Computerized tomography (CT) scans of two de-identified individuals were utilized to create 3D visual reconstructions. The first scan was a post-Mustard procedure correction and the second was a post-ASO correction, facilitated with the LeCompte Maneuver. The 3D computer reconstructions, animations, and 3D models were completed using a variety of computer programs, including image analysis software Amira, video editing software Camtasia, and object assembly software Adobe 3D toolkit. A thorough journal review was also conducted for the two surgical procedures in question. Conclusion/Significance of Project: The project demonstrated real life anatomy after two different and complicated surgical repairs and allowed for a comparison between the two. Journal review revealed that the Mustard Procedure often results in long-term complications including right ventricle failure and atrial arrhythmias. The use of 3D imaging allows for easier visualization of perhaps why these complications may occur, as the Mustard procedure results in the right ventricle abnormally becoming the main pump of the body and baffles being constructed through the atria. The benefits of 3D visualization of post-surgical congenital heart anomalies to health care professionals are vast. These techniques can aid students in learning CHDs, physicians in post-surgical treatment, and for patients in understanding their own disease.


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