Optimized Double-Regional Filtering Algorithm on MRI Three-Dimensional Reconstructed Images for the Evaluation of Effects of Delivery on the Pelvis of Primiparas

Table 2

Grading of POP.

Grade	Standard
0	All indicator points above or below the PCL line were <1 cm
I	The position of any indicator point of the anterior, middle, and posterior pelvic cavity was 1 ∼ 3 cm lower than the PCL line
II	The position of any indicator point of the anterior, middle, and posterior pelvic cavity was 3 ∼ 6 cm lower than the PCL line
III	The position of any indicator point of the anterior, middle, and posterior pelvic cavity was ≥6 cm lower than the PCL line