Fig. 1. Axial view of the cauda equina. Magnetic resonance images (T2 weighted, spin echo, TR 2,000/TE 100 ms) at the L3–L4 level in the same subject were obtained in the supine position (  A ), the left lateral decubitus position without fully flexed leg (  B ), and the left lateral decubitus position with fully flexed leg (  C ). L = left; R = right; TE = echo time; TR = repetition time. 

Fig. 1. Axial view of the cauda equina. Magnetic resonance images (T2 weighted, spin echo, TR 2,000/TE 100 ms) at the L3–L4 level in the same subject were obtained in the supine position (  A ), the left lateral decubitus position without fully flexed leg (  B ), and the left lateral decubitus position with fully flexed leg (  C ). L = left; R = right; TE = echo time; TR = repetition time. 

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