ObjectiveTo explore the three dimensional ultrasound imaging feature and its clinical significance of uterine cavity forms after cesarean. MethodsTwo hundreds and seventy eight women were divided into two groups according to their delivery types: caesarean section group or natural childbirth group.Their endometrial cavity shape was observed, and intrauterine diameters were measured by using good coronal three dimensional ultrasound imaging. Comparison between the two groups was made. ResultsThere was significantly different percentage between the two groups of objects morphological changes: 45 cases of the uterine cavity of cesarean section group were of narrow triangular shape or irregular shape uterus, accounting for 32.6%, while only 10 cases in natural childbirth group, accounting for 7.1%. Cesarean group uterine cavity diameter (2.78±0.56 cm) was significantly less than the natu ral delivery group (3.07±0.72cm), and cesarean section group uterine cavity longitudinal diameter (5.17±0.83cm) was greater than the natural delivery group (4.53±0.77 cm), (allP＜0.05). Difference in the cervix diameter between the two groups was not statistically significant (P＞0.05). ConclusionsThe long, narrow shape of the uterus and irregular uterine morphological changes after cesarean are significantly more than after natural childbirth. Dimensional ultrasound imaging can accurately reflect the characteristics of uterine cavity morphological changes after cesarean, provide graphic information for clinical use, and guide clinical practice.

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