【摘要】 本文目的是分析脊髓空洞症ＭＲ表现，探讨空洞内脑脊液博动机理及意义。所用材料和方法是以２９例脊髓空洞症均行ＭＲ矢状位Ｔ１、Ｔ２加权扫描，部分行轴位扫描，观察空洞的长度与脑脊液博动的关系。结果得到２９例空洞累及长度在２～１５个椎体节段，前后径２～１２ｍｍ之间。２２例有脑脊液博动者空洞长度平均累及９个椎体节段，７例无脑脊液博动者平均累及５个椎体节段。结论是ＭＲ对脊髓空洞症的诊断具独到之处，脑脊液的博动与空洞的长度有关，而与宽度无关。空洞内脑脊液博动还可作为观察术后疗效的一项指标。更多还原

【Abstract】 Purpose:To analyse the manifestations of MRI for Syringomyelia and explore the mechanism and significance of syrinx cavities cerebrospinalfluid pulsation.Materials and methods:29 cases with Syringomyelia were examined with sagittal plane T1WI and T2WI,parts of cases were examined with transverseplane. The relationship between cerebrospinal fluid pulsation and the length of syrinx cavities was observed.Results:There were 2～15 segments of the vertebras being involved in 29 syrinx cavities, the sagittal diameter was between 2～12mm. The average of involved vertebras were 8.9 in 22 cases with cerebrospinal fluid pulsation and 4.5 in 7 cases with absent cerebrospinal fluid pulsation. Conclusion:MR is the best way diaognosis syring ,cerebrospinal fluid pulsation relates to the length of byrinx cavities no relation to the width. Syrinx cavities cerebrospinal fluid pulsation can aiso be used us the sign of operative effects.更多还原