Sequential images from a single patient’s three-step clinical AC-PC protocol.A, Coronal FGRE localizer image (6/1.6; flip angle, 20°; section thickness, 7 mm; matrix, 256 × 192; FOV, 24 cm) for roll prescription. Sequential images from a single patient’s three-step clinical AC-PC protocol.A, Coronal FGRE localizer image (6/1.6; flip angle, 20°; section thickness, 7 mm; matrix, 256 × 192; FOV, 24 cm) for roll prescription. The line indicates the plane of the image in B.B, Roll-corrected axial oblique FGRE localizer image (8/1.6; flip angle, 20°; section thickness, 7 mm; matrix, 256 × 192; FOV, 24 cm) for yaw prescription. The thickest line indicates the plane of the image in C.C, Roll- and yaw-corrected double oblique T2-weighted FSE image (3816/105eff; echo train length, 16; section thickness, 4 mm; skip, 1 mm; matrix, 512 × 256; FOV, 20 cm; NEX, 2; time, 1 minute 56 seconds) for pitch prescription. The thickest line indicates the Talairach reference plane used for subsequent triple oblique axial scans. Kenneth L. Weiss et al. AJNR Am J Neuroradiol 2003;24:922-929 ©2003 by American Society of Neuroradiology