To acquire sufficient information, the images were recorded at 60 frames per second. We captured images of a full cardiac cycle through the correlation of two consecutive QRS complexes on an electrocardiogram.
Image analysis was performed using recorded and separately stored raw data. The software used to analyze the data was Siemens Syngo® US Workplace (Siemens Medical Solutions USA, Inc., Malvern, PA, USA).
Through the analysis of data obtained on VVI, we obtained the peak systolic velocity, strain, strain rate (SR), and longitudinal displacement values. The “home view” RV image was divided into six different areas: right ventricular inlet, midinlet, apex-inlet, apex-outlet, midoutlet, and right ventricular outlet. The change in these parameters before and after the procedure was compared (Figure 2 ).
To minimize inter- and intra- observer variation, images were obtained by a specialist interventionist (J.Y.C.), whereas the images were analyzed by another well-trained pediatric cardiologist (N.K.K) via the manual subendocardial border tracing method, a total of three times. The mean values were recorded for analysis in the present study.
Image analysis was performed using recorded and separately stored raw data. The software used to analyze the data was Siemens Syngo® US Workplace (Siemens Medical Solutions USA, Inc., Malvern, PA, USA).
Through the analysis of data obtained on VVI, we obtained the peak systolic velocity, strain, strain rate (SR), and longitudinal displacement values. The “home view” RV image was divided into six different areas: right ventricular inlet, midinlet, apex-inlet, apex-outlet, midoutlet, and right ventricular outlet. The change in these parameters before and after the procedure was compared (
To minimize inter- and intra- observer variation, images were obtained by a specialist interventionist (J.Y.C.), whereas the images were analyzed by another well-trained pediatric cardiologist (N.K.K) via the manual subendocardial border tracing method, a total of three times. The mean values were recorded for analysis in the present study.