Table 2.

Specific definitions of measurement parameters

Parameter	Description
Maximum transverse diameter of the tumor	The maximum diameter line in the left and right directions of the tumor
Maximum anteroposterior diameter of the tumor	The maximum diameter of the anterior and posterior direction of the tumor
Ischia spine spacing	The straight-line distance between the bilateral the sciatic spine
Ischial tuberosity spacing	The straight-line distance between the bilateral ischial tuberosity
Anterioposterior diameter of pelvic inlet	The straight-line distance from the middle superior margin of the symphysis pubis to the middle anterior margin of the sacral promontory