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Figures
- Fig 1.
Axial CT image through L5/S1 (3-mm section, 100 KVp, 50 mA). Image demonstrates 22-g spinal needle (black dot) traversing the ligamentum flavum (black X) tip in the epidural space. The white arrow demonstrates the interface of injected air (black) on top of epidural fat (gray). The air in the epidural space pushes the thecal sac medially (white dot).
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