Variability of S1 and S2 Intra-Sacral Corridor Height in Cone-Beam Computed Tomography-Guided Percutaneous Pelvic Screw Fixation: A Retrospective Study of 115 Patients. - Perez H; Chalamet B; Grange S; Viste A; David JS; Pialat JB; Stacoffe N (Journal of vascular and interventional radiology : JVIR, 2026)