探讨新型智能产前超声技术（SF）技术包括标准切面自动识别与获取（SFDA）技术和生长参数自动测量（SFM）技术的临床使用价值。

使用SF技术和传统超声技术对2018年8月至2019年1月南方医科大学附属深圳妇幼保健院妊娠16~41周正常连续单胎1005例进行丘脑水平横切面（A）、上腹部水平横切面（B）和股骨长轴切面（C）3个标准切面的识别与获取，测量双顶径（BPD）、头围（HC）、腹围（AC）和股骨长（FL）4个生长参数。另选择60例胎儿进行2种技术观察者内和观察者间重复性测量分析；运用Wilcoxon带符号秩检验比较2种技术进行切面识别与获取以及参数测量所需的时间；使用组内相关系数评价传统超声与SF技术测量的一致性，并评价SF技术切面获取及生长参数测量的准确率。

与传统超声技术相比，SF技术测量的重复性更好。使用SF与传统技术测量4个生长参数的组内相关系数分别为0.998、0.995、0.998、0.998。通过判定，使用SF技术识别与获取标准切面A、B和C成功率分别为98.00%、99.10%和99.60%，测量BPD、HC、AC和FL成功率分别为100%、100%、99.60%和100%。无论是同时进行切面自动识别、获取与参数测量，还是单独进行参数测量时，SF技术明显比传统技术用时短[21.26（5.24）s vs 52.24（14.90）s；2.78（0.66）s vs 35.70（8.25）s]，差异均具有统计学意义（Z=-27.366、-27.352，P均<0.001）。

SF技术可自动化、智能化识别、获取胎儿超声3个标准切面，并对4个生长参数进行自动化测量，该技术在切面识别与获取的成功率和生长参数自动测量的准确性高，并可极大地减少标准切面获取及测量的时间，是一项智能、精准、高效的产前超声检查技术。

To evaluate the clinical value of smart fetus (SF) technique, which includes smart fetus distinguishment and acquirement (SFDA) technique and smart fetus measurement (SFM) technique.

One thousand and five normal single fetuses between 16 and 41 weeks were selected at Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University from August 2018 to January 2019. The standard sections, including transverse section of the thalamus (A), transverse section of the abdomen (B), and longitudinal section of the femur (C) were obtained and growth parameters, including biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL) were measured by the SF and traditional technique, separately. Sixty fetuses were selected and measured for intra- and inter-observer repeatability analyses. Wilcoxon signed rank test was used to compare the time required for section and parameter acquirement; intraclass correlation coefficients were calculated to evaluate the agreement between the two techniques, and the accuracy of SF technique for section acquisition and growth parameter measurement was evaluated.

Compared with traditiond technique, the SF had a better intra- and inter-observer agreements. The intraclass correlation coefficients of the four growth parameters were 0.998, 0.995, 0.998, and 0.998, separately. According to the expert judgement, the successful rates of sections A, B, and C acquirement by SFDA technique were 98.0%, 99.1%, and 99.6%, separately, and the accuracy for BPD, HC, AC, and FL measurement was 100%, 100%, 99.5%, and 100%, separately. The times required to obtain sections and parameters or just make the measurements by SF were both shorter than those by the traditional technique [21.26 (5.24) s vs 52.24 (14.90) s, Z=-27.366, P<0.001; 2.78 (0.66) s vs 35.70 (8.25) s, Z=-27.352, P<0.001].

SF technique is an automatic and intelligent technique for fetal standard section acquirement and growth parameter measurement, having a very high successful rate for standard sections acquirement and extremely high accuracy for fetal growth parameter measurement. Furthermore, it can greatly reduce the amount of time required for prenatal ultrasound examination, representing an efficient and reliable technique in prenatal ultrasound examination.