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目的评价B-flow显像联合时间-空间相关成像技术(STIC)在诊断胎儿先天性心脏病中的应用价值。方法选择56例正常胎儿和28例先天性心脏病胎儿,先在二维超声胎儿心脏模式下进行常规扫查,然后进行B-flow显像STIC数据采集,用表面模式对采集的容积图像进行四维重建。结果 53(53/56)例正常胎儿及28(28/28)例先天性心脏病胎儿在B-flow显像方式下进行STIC采集,成功地采集到合格的容积图像,四维重建的容积图像能清楚显示心血管正常或异常的空间位置关系,其中主、肺动脉等大血管的“数字铸型”、3～4条肺静脉同时显示等是二维超声无法观察到的。结论 B-flow-STIC技术能清楚显示胎儿心脏与大血管的空间位置关系,并可获取二维超声心动图所无法提供的某些胎儿心脏解剖及病理特点的信息。
Objective To evaluate the value of B-flow imaging combined with time-space-related imaging (STIC) in the diagnosis of fetal congenital heart disease. Methods Fifty-six normal fetuses and 28 congenital heart disease fetuses were selected. First of all, routine scanning was performed in two-dimensional ultrasound fetal heart model. Then STIC data were collected by B-flow imaging. Four-dimensional reconstruction. Results Fifty-three (53/56) normal fetuses and 28 (28/28) fetuses with congenital heart disease underwent STIC acquisition under the B-flow imaging modality. The qualified volumetric images were successfully collected. The volume images of four-dimensional reconstruction Clearly shows the normal or abnormal location of the cardiovascular system. Among them, “digital casting” of major vessels such as the main and pulmonary arteries, and simultaneous display of 3-4 pulmonary veins are two-dimensional ultrasound can not be observed. Conclusion The B-flow-STIC technique can clearly show the spatial relationship between the fetal heart and the large blood vessels, and can obtain some anatomical and pathological features of fetal heart that can not be provided by two-dimensional echocardiography.