From:  Radiologic sustainability in cardiology: risks, awareness, and clinical implications

 The median radiation dose for common pediatric cardiology examinations (modified from [6]).

ProcedureEffective dose (mSv)Equivalent CXRs
Closure of atrial septal defect00
Patent ductus arteriosus closure1.365
Aortic valvuloplasty1.365
Myocardial biopsy1.890
Ventricular septal defect closure2.3115
Pulmonary hypertension1.365
Aortic coarctation stenting1.995
Right ventricular outflow tract stent2.7135

CXRs: chest X-rays.