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Fig. 2 —Schematic double oblique multiplanar reformation at coronal level of spinal cord in 36-year-old woman shows course of artery of Adamkiewicz and its feeding arteries with locations of diametric and contrast-to-noise evaluations (1). All evaluated posterior branches of feeding and neighboring segments were evaluated 5 mm distal to vascular bifurcation of intercostal or lumbar artery (2). Radiculomedullary artery was uniformly evaluated while passing through neuroforamen; great anterior radiculomedullary artery was assessed in a base segment (3) characterized by horizontal orientation of vascular cross section and in a hairpin segment (4) delineated by a vertical vascular cross section. Measurements in anterior spinal artery were performed 5 mm below hairpin junction (5).