To evaluate the application value of fetal heart echocardiography intelligent navigation (5D Heart) in the display of key diagnostic elements in five rapid screening fetal echocardiographic views.

Three hundred and eighty-four 3D volume datasets of 220 normal singleton fetuses in the second and third trimesters were acquired. After processing the datasets using 5D Heart, five rapid screening views were acquired, and 21 key diagnostic elements of the five cardiac diagnostic sections were graded. The 2 test was used to compare the difference in the key diagnostics elements of the five rapid screening views between 5D heart and the traditional technique. Pearson correlation was used to compare the detection rate of key diagnostic elements between 5D Heart technique and traditional two-dimensional echocardiography in normal fetuses and fetuses with congenital heart disease. The rank sum test was used to detect the consistency and reliability of the results.

A total of 384 fetal volume datasets were obtained from 220 fetuses, of whom 317 heart volume datasets were available for analysis, with a success rate of 82.6%. There was no difference in the key diagnostic elements of the five rapid screening views between 5D heart and the traditional technique (χ²=5.17, P=0.27). Compared with the abnormal fetal heart group (89.6%), the detection rate of diagnostic elements in the normal fetal heart group was 85.2% (r=0.94, P=0.02). No significant differences were found when comparing the grading results of one observer in different periods of time, the grading results between two experienced doctors, or the grading results among the experienced doctor and one relatively inexperienced doctor (P>0.05).

Fetal cardiac ultrasound intelligent navigation technique has high reliability and repeatability in obtaining fetal rapid screening views and displaying fetal elemental diagnostic information. It has tremendous potential in standardized data collection and analysis of cardiac diagnostic sections in fetuses with congenial heart disease, as well as in training and teaching, remote medical consultation, and screening in primary hospitals.