目的：探讨低场强磁共振弥散成像对早期脑缺血的诊断价值。

Purpose:To evaluate the value of low magnetic-field intensity MR diffusion-weighted imaging(DWI) incerebral ischemia in early stage.

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目的验证低场强磁共振成像(MRI)诊断半月板撕裂的准确性。

Objective To specify the diagnostic accuracy of low-field MRI on meniscal tears.

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结论低场强磁共振成像对急性蛛网膜下腔出血有较大的诊断价值。

Conclusion There is greatly diagnostic value by low-field MRI for ASAH.

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