Figure 1

Ventricular septal defect. A: A long-axis image of the left ventricular outflow tract which was obtained by transthoracic echocardiography when the transducer was placed in the fourth right intercostal space. Ao – aorta, VSD – ventricular septal defect, RV – right ventricle, LV – left ventricle. B: A transverse view at the level of the aorta and left atrium, which was obtained by transthoracic color Doppler echocardiography when the transducer was placed in the third right intercostal space. The ventricular septal defect in which blood flows from the left ventricle into the right ventricle is seen as a multicolored shunt. Ao – aorta, LA – left atrium. C: A multicolored long axis image of the shunt jet caused by the turbulent blood flow through VSD which was obtained by continuous-wave Doppler echocardiography when the transducer was placed in the fourth right intercostal space. The maximum velocity through the VSD was 6.72 m/sec. RV – right ventricle, LV – left ventricle. D: A long-axis image of the left ventricular outflow tract which was obtained by transthoracic color Doppler echocardiography when the transducer was placed in the fourth right intercostal space. Ao – aorta, RV – right ventricle.