Fig 1. To characterize A/P spinal cord motion, midsagittal CINE images were acquired at 24 phases of the cardiac cycle. To span the length of the cord, 2 sets of overlapping data were acquired. A, Spanning the lower-cervical and upper-thoracic vertebral levels. B, Spanning the lower-thoracic and upper-lumbar vertebral levels (below the level of the conus medullaris). These sections were positioned such that there was approximately one vertebral level of overlap (denoted by the 2 horizontal white lines) between the rostral and caudal datasets, thus enabling uninterrupted characterization of motion along the cord.