CT
Axial C+ arterial phase
Coronal C+ arterial phase
Sagittal C+ arterial phase
- Anterior position of the pulmonary artery relative to the aorta indicating prior arterial switch procedure.
- There is asymmetric narrowing of the right main pulmonary artery compared to the left.
- The right ventricle is diminished in size relative to the left ventricle.
- There are numerous large (>2mm) right-sided aorto-pulmonary collateral arteries arising from: right subclavian artery (origin not in field of view), right internal mammary artery, left common carotid artery, right internal mammary artery, right coronary artery, left circumflex coronary artery, and right inferior phrenic artery (origin not in field of view). In addition, there are numerous small (<1mm) and medium (1-2mm) collateral arteries arising from vertebral and intercostal arteries, as well as likely the right superior epigastric artery.
- Two Amplatzer vascular plugs are present in the prevertebral region at and slightly above the level of the aortic arch from prior collateral embolization.