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| Application of real-time Bi-plane technique for the visualization of fetal interventricular septum |
| WANG Yu, SUN Xue |
| Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang 110004, China |
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Abstract Objective: To explore the feasibility and application value of real-time Bi-plane technique for the visualization of fetal interventricular septum(IVS). Methods: Using real-time Bi-plane technique to observe fetal IVS in 150 normal fetuses and 29 abnormal fetuses(including 21 cases of isolated VSD and 8 cases of AVSD). The fetal intact IVS can be demonstrated by displaying the apical four-chamber view or the bottom of four-chamber view, then putting the reference line across the IVS when using real-time Bi-plane technique. The integrity of IVS was then assessed. In addition, fetal cardiac volumes were acquired and analyzed by STIC technique to obtain the reconstructed image of IVS in all the normal and abnormal fetuses. Results: Compared with STIC modality, the Bi-plane technique showed a significantly higher visualization rate of IVS for the normal(98.7% vs. 83.3%, P<0.01) and abnormal fetuses (96.6% vs. 79.3%, P<0.01). At the same time, the time needed to obtain the plane for IVS of the Bi-plane technique was significantly shorter than STIC modality((15.5±5.8) s vs. (58.1±13.3) s, P<0.01). Conclusion: Real-time Bi-plane technique is a simple and time-saving method for the real-time assessment of the fetal intact IVS, which can be used as an important auxiliary examination of conventional two-dimensional fetal echocardiography and thus has important clinical value.
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Received: 08 November 2019
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2020, Vol. 31 
