Study on sex differences and potential clinical value of three-dimensional computerized tomography pelvimetry in rectal cancer patients

Figure 1 Localization diagram of each positioning point during three-dimensional pelvic measurement. A: Localization diagram of the highest point of the pubic symphysis during three-dimensional (3D) pelvic measurement (left); positioning of the corresponding measurement point at the intersection of two axis lines on the transverse, sagittal, and coronal planes (right); B: Localization diagram of the midpoint of the anterior edge of the sacral promontory during 3D pelvic measurement (left); positioning of the corresponding measurement point at the intersection of two axis lines on the transverse, sagittal, and coronal planes (right); C: Localization diagram of the maximum distance between the left and right iliopectineal line during 3D pelvic measurement (left); positioning of the corresponding measurement point at the intersection of two axis lines on the transverse, sagittal, and coronal planes (right); D: Localization diagram of the tip of the coccyx during 3D pelvic measurement (left); positioning of the corresponding measurement point at the intersection of two axis lines on the transverse, sagittal, and coronal planes (right); E: Localization diagram of the ischial spine during 3D pelvic measurement (left); positioning of the corresponding measurement point at the intersection of two axis lines on the transverse, sagittal, and coronal planes (right); F: Localization diagram of the ischial tuberosity during 3D pelvic measurement (left); positioning of the corresponding measurement point at the intersection of two axis lines on the transverse, sagittal, and coronal planes (right).