伸展你的脊柱，好像有一根线从头顶直直的往上拉你的头，脖子和后背。
Elongate your spine as if a thread extending from the top of your crown was pulling your head, neck and back straight up towards the sky.
保持背部和颈部形成一条直线这样光束就能通过脊柱中心线。
Keep your back and neck aligned so the light finds its way through the core of your spinal column.
目的：比较和评价常规X线片和CT扫描二种影像学方法在脊柱骨折诊断中的作用。
Objective: To compare the two imaging methods between X-ray and ct scan in diagnosing spinal fracture.
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