Areias, J.C.

disturbance doppler right flow disturbance study children aortic patient stenosi artery defect aortic arch infant group atrial outflow tract control outflow cdh infants flow disturbances obstruction heart nt-probnp level frequency echocardiography valve blood septal tract table signal dispersion control group insufficiency sample examiner time interval histogram examination catheterization pressure atrium function m-mode result detection systolic echocardiographic aortic root echo-doppler disease aorta endocardial cushion defects doppler echocardiography effect diagnosis distance velocity regurgitation atrial septal defect series effect aortic stenosis ventricle observer range investigation frequency dispersion valvular right atrial outflow laminar newborn instance lesion child pattern diaphragmatic hernia right ventricle vortex series doppler signal