Study Design. An in io flexion - extension magnetic resonance imaging study.

研究设计: 一项人体伸 - 屈运动MRI成像的研究.

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Objective To re - evaluate upright flexion - extension myelography and computed tomographic myelography in diagnosing lumbar spinal stenosis.

目的重新评价椎管造影伴CT扫描在腰椎管狭窄症诊断中的作用.

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