弥散加权磁共振与磁共振血管成像在急性脑梗死诊断中的临床应用

目的　评价弥散加权磁共振成像 (Diffusion -weightedimaging ,DWI)及磁共振血管成像 (MagneticReso nanceAngiography ,MRA)在脑梗死早期的临床应用价值。 方法　对 3 0例急性脑梗死患者行DWI和MRA检查 ,并与CT、常规MRI的结果进行分析比较。结果　在超早期及早期急性脑梗死中DWI可显示CT及T2 WI不能显示的病灶 ,对于T2 WI能显示的病灶DWI能更清楚、更全面的显示该病灶 ,MRA能快速发现血管病变的部位和程度。结论　DWI与MRA对急性脑梗死的早期诊断十分敏感 ,联合检查可同时显示脑实质和脑血管情况 ,为早期溶栓治疗提供了切实可行的影像学资料

Application of DWI and MRA to the diagnosis of acute cerebral infarction

Objective To explore the value of diffusion weighted imagine(DWI) and magnetic resonance angiography(MRA) for the clinical significance in acute cerebral infarction in the early stage.Method The results of DWI and MRA and traditional CT and routine MRI in 30 patients with acute cerebral infarction were analyzed.Result Ultra-acute and acute cerebral infarction could be shown on DWI,which may not be shown on CT and T 2.WI.The focus that were shown on T 2.WI were more clearly shown on DWI.Focus and degree of intracranial vascular lesion could be detected rapidly.Conclusion DWI and MRA are sensitive for diagnosis in the early stage of acute cerebral infarction.Cerebral constitution and cerebral vessels can be shown by DWI and MRA,thus offering reliable imaging data for thrombolytic therapy.