Angiography department of children medical center was exploited ion November 2011 ,next  to open-heart-surgery room  which provided diagnostic and therapeutic procedures for treating cardiac diseases of children .Among most occurring diseases in this ward ,we can point out to congenital heart disease ,congestive heart failure ,hypoxia ,defects  combined with increased pulmonary blood flow ventricular septal defects ,coarctation of the aorta ,aortic stenosis or pulmonary artery defects with decreased pulmonary blood flow ,fallot tetralogy and left-open arterial channels