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比较快速自旋回波序列和平衡式快速场回波序列对胎盘植入征象的显示效能

Chinese Journal of Medical Imaging Technology(2013)

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Abstract
目的 比较快速自旋回波(TSE)序列和平衡式快速场回波(B-FFE)序列显示胎盘植入(PI)征象的效能.方法 将29例可疑PI患者分为TSE组和B-FFE组,分析两种序列显示PI征象的效能、诊断PI的敏感度和特异度.结果 TSE组显示胎盘内信号变化和胎盘与肌层的分界较B-FFE组有优势;B-FFE组显示胎盘是否突入肌层较TSE组有优势.两种序列诊断PI的敏感度和特异度分别为85.71%(18/21)、50.00%(4/8)和76.19%(16/21)、87.50%(7/8).结论 TSE的软组织对比度较好,B-FFE的空间分辨率较高;两者结合能提高MRI对PI的诊断价值.
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Key words
Magnetic resonance angiography,Magnetic resonance imaging,Trigeminal neuralgia,Voxel
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