Results: Major arteries traveling in Zones 1-4 according to Moro et al.'s evaluation method were found in 5 cases (11%) in L1/2, 3 cases (7%) in L2/3, 2 cases (4%) in L3/4, and 5 cases (11%) in L4/5. Major veins were found in 6 cases (13%) in L1/2, 16 cases (35%) in L2/3, 37 (80%) in L3, 37 (80%) in L1/2, 16 (35%) in L2/3, 39 (85%) in L3/4, and 39 (85%) in L4/5. Longitudinal disk traversal of the lumbar artery branch was present in 1 case (2%) in L3/4 and 15 (33%) in L4/5. Venous malformations were found in (a) 0 (0%), (b) 4 (9%), and (c) 3 (7%) patients, respectively.