Prediction of Scar Myometrium Thickness and Previous Cesarean Scar Defect Using the Three-Dimensional Vaginal Ultrasound

Table 1

Measurement methods of each data of PCSD.

Parameter	Measurement methods
Width	Maximum distance between left and right diameter lines of anechoic zone on 3D longitudinal section of uterus
Height	Maximum vertical distance between upper and lower diameter lines of anechoic zone on longitudinal section of uterus 3D image
Depth	The maximum distance from the tip of anechoic zone to the base on the transverse section of transvaginal two-dimensional image
The remaining myometrium thickness in the thinnest location	Minimum distance from the top of anechoic zone on longitudinal section to the serosal layer on horizontal plane