磁共振快速场回波技术在诊断急性脑出血中的应用

Application of fast field echo technique in diagnosis of hyperacute cerebral hemorrhage

目的评价磁共振快速场回波技术（FFE）T2＊WI诊断急性脑出血的意义。方法发病1-24 h的28例急性脑出血患者在行CT检查后,行FFE-T2＊WI检查及常规MRI检查,比较其诊断价值。结果28例出血灶在FFE-T2＊WI均表现为边界清楚的极低信号或边界清楚的低信号环内部为略高信号或低信号区内混杂小斑点状高信号,使脑出血病灶显示非常清楚。8例在基底节区、丘脑及顶叶发现有1-3个直径2-4 mm的圆形、斑点状的极低信号,为FFE-T2＊WI检测出的脑微出血灶。结论FFE-T2＊WI技术在诊断急性脑出血方面较CT和常规磁共振成像更敏感,可以全面了解患者颅内损害情况。

Objective To evaluate the role of fast field echo T2 weighted image （ FFE-T2 ＊ WI） in diagnosis of hyperacute cerebral hemorrhage. Methods FFE- T2 ＊ WI was performed in 28 cases of cerebral hemorrhage within 1 - 24 h after symptom onset, and the results were compared with routine CT and MRI- to learn which one is more effective. Results All cases of parenchymal hemorrhage appeared as punctuate hypointensity or inhomogeneous hyperintensity with punctuate hypointensity on FFE- T2 ＊ WI. Among 28 patients, parenchymal hemorrhage appeared clearly. There were one to three dots or patchy hypointension with diameter about 2 ＊ 4 mm in ganglia and thalamus and parietal lobe areas on 8 patients＊ FFE- T2 ＊ WI, which were cerebral microbleeding diagnosed by FFE- T2 ＊ WI. Conclusion FFE-T2 ＊ WI should be a much more sensitive method than CT or the routine MRI and could get more message about intracranial damage.