Fig. 1.

Schematic illustration of the regions of interest (ROIs) of the intervertebral discs (IVD) and a color-coded T2 map. The ROI in the upper left image was placed in the nucleus pulposus. The bottom left image showed the division of IVD into five subregions from anterior to posterior (ROI 1 to 5): anterior annulus fibrosus (AAF), anterior nucleus pulposus (ANP), central nucleus pulposus (CNP), posterior nucleus pulposus (PNP), posterior annulus fibrosus (PAF). (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)