目的：评价MRI对髓外硬膜下肿瘤的诊断价值。

Objective: To evaluate MRI diagnosis value of subdural extramedullary tumors.

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目的探讨低场强MRI对椎管内髓外硬膜下肿瘤的临床诊断价值。

Objective: To evaluate the usefulness of low-field MRI in diagnosing intradural extramedullary tumors in the spinal canal.

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其中髓外硬膜下肿瘤9例，髓外硬膜外肿瘤6例，哑铃形肿瘤8例。

There were 9 cases of subdural extramedullary tumors, 6 of epidural tumors and 8 of dumbbell tumors.

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