时间空间相关成像联合5D Heart智能导航技术用于正常胎儿心脏超声筛查

目的 评估时间空间相关成像（STIC）联合5D Heart智能导航技术在正常胎儿心脏超声筛查中的应用价值。方法 由医师甲采用常规二维超声和STIC联合5D Heart智能导航技术对114胎正常胎儿进行心脏超声筛查，记录2种检查方法采集图像所用时间，并对相同的9个切面进行评分；1周后，医师甲再次、医师乙首次对STIC联合5D Heart智能导航技术的图像质量进行评分。比较2种检查方法对各切面显示合格率，分析同一医师和不同医师间图像质量评分的一致性。结果 2胎因胎动明显无法确定智能导航点位置而被排除。胎儿心脏容积图像和常规二维超声图像的采集时间分别为（94.76±35.21）s和（595.88±139.29）s，差异有统计学意义（P<0.001）。STIC联合5D Heart智能导航技术与常规二维超声对胎儿四腔心、五腔心、右心室流出道、三血管气管、主动脉弓、动脉导管弓切面的显示合格率差异无统计学意义（P均>0.05）；STIC联合5D Heart智能导航技术对胃泡水平腹部横切面、左心室流出道切面的显示合格率低于常规二维超声检查（P均<0.05）。不同医师间（除三血管气管和主动脉弓切面）及同一医师不同时间（除主动脉弓切面）对容积数据进行分析后各切面的评分一致性好（Kappa均>0.75）。结论 STIC联合5D Heart智能导航技术可缩短检查时间；9个胎儿心脏切面图像质量能够满足胎儿心脏超声筛查需要，用于正常胎儿心脏超声筛查的可行性和可重复性均好。

Spatiotemporal image correlation combined with 5D Heart intelligent navigation technique in normal fetal heart screening

Objective To explore the application value of spatiotemporal image correlation (STIC) combined with 5D Heart intelligent navigation echocardiography in ultrasonic screening of normal fetuses. Methods Ultrasonic screening of fetal heart was performed in 114 normal fetuses using conventional two-dimensional ultrasound and STIC combined with 5D Heart intelligent navigation technique by doctor A. The time taken for image collection using these two methods were recorded and the same nine sections were scored. One week later, image quality of STIC combined with 5D Heart was scored again by doctor A again, also by doctor B. The qualified rate of each section was compared between the two methods, and the consistency of image quality score by the same doctor and different doctors was analyzed. Results Two fetuses were excluded due to obvious fetal movement and inability to determine the position of the intelligent navigation point. The time of collection of fetal heart volume images and conventional two-dimension ultrasound images were (94.76±35.21)s and (595.88±139.29)s, respectively (P<0.001). There was no statistical difference between two examination methods in the qualification rate of the four-chamber, five-chamber, right ventricular outflow tract, three vessel and trachea, aortic-arch nor ductal-arch sections (all P>0.05). The qualification rate of the abdomen and left ventricular outflow tract sections using STIC combined with 5D Heart was lower than those using the conventional two-dimension ultrasound (both P<0.05). The score of each slice had good consistent between different doctors (except for three-vessel trachea and aotic-arch sections) and the same doctor except for aotic-arch section who analyzed the volume data at different times (all Kappa>0.75). Conclusion STIC combined with 5D-Heart intelligent navigation technique can shorten the examination time. The quality of the nine fetal heart view images can meet the needs of fetal heart ultrasonic screening, feasible and repeatable in normal fetal heart ultrasonic screening.