High-resolution, three-dimensional magnetic resonance imaging axial load dynamic study improves diagnostics of the lumbar spine in clinical practice

Figure 2 Transverse magnetic resonance imaging. A: Recumbent T2-weighted images. The rootlets occupy the whole of the dural sac (arrow), but they can still be individualized; B: Spinal stenosis with a reduction in the dural sac size after axial loading. No rootlets can be recognized, but some cerebrospinal fluid is still present, giving a grainy appearance to the sac (arrow).