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磁共振灌注成像对脑内环形强化病变的鉴别诊断价值

Acta Academiae Medicinae Qingdao Universitatis(2013)

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Abstract
目的探讨磁共振灌注成像(PWI)在脑内环形强化病变鉴别诊断中的价值。方法收集脑内环形强化病变病人25例,包括高级别胶质瘤8例,脑转移瘤10例,脑脓肿7例。均分别进行MRI平扫、MRI增强和PWI检查。在MR后处理工作站上获得PWI伪彩图,测量病变区、周围水肿区及其对侧对应正常脑白质区相对脑血容量(rCBV),计算rCBV的比值(rrCBV)。结果高级别胶质瘤及脑转移瘤病变区的rrCBV与脑脓肿比较,差异均有统计学意义(F=96.91,t=11.23、23.70,P<0.001);高级别胶质瘤、脑转移瘤及脑脓肿周围水肿区rrCBV比较,差异均有统计学意义(F=41.57,t=2.93~8.45,P<0.05)。结论 PWI对于脑内环形强化病变的鉴别有一定的价值。
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Key words
brain abscess,differential,diagnosis,brain neoplasms,magnetic resonance angiography
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