脑微出血的磁敏感加权成像诊断价值

目的：探讨脑微出血的磁敏感序列（SWI）影像技术表现及诊断价值。方法：对97例脑微出血（CMBs）受检者进行MRI检查（含SWI序列）,分析SWI序列四组数据及MPR表现。结果：CMBs在SWI表现为≤10mm的圆形、卵圆形的低信号或以低信号为主的混杂信号,磁矩（Magnetic）、最小密度投影（mIP）与SWI相近,相位图（Phase）呈高信号或以高信号为主的混杂信号,MPR的冠、矢状位呈条形、梭形、水滴状低信号。结论：SWI四组数据及MPR相结合综合分析CMBs的表现,提高CMBs的影像诊断水平,为脑血管损害程度进行精确、全面评价提供更多的影像学信息。

Application of susceptibility weighted imaging in diagnosis of cerebral microbleeds

Objective：To investigate the features and the values of susceptibility weighted imaging in the diagnosis of cerebral microbleeds.Methods：97 patients with CMBs underwent MRI examination（including SWI sequences）,to analyze four data（magnetic data/ phase data /SWI data /mIP data） and MPR of SWI sequences.Results：CMBs showed rounded or ovaled foci of ≤10 mm in size that appeared hypointensity or mixed-single intensity in SWI data.The presence of CMBs in Magnetic imaging and mIP imaging was similar to SWI data.Phase imaging showed hyperintensity single or mixed-single intensity.Coronal and sagittal of MPR images show CMBs as strip or spindle or teardrop-shaped hypointensity single.Conclusion：To analyze four group SWI data and MPR features of CMBs could improve the diagnostic level of CMBs and provide more imaging information accurately and exhaustively in cerebral vascular damage.