X线、CT与MRI对诊断齿状突畸形的临床价值比较

Valuable comparison of X-ray,CT and MRI in diagnosis of dentate gyrus deformity

目的比较X线、CT和MRI对诊断齿状突畸形的诊断价值。方法回顾性分析43例齿状突畸形的X线、CT及三维重建和MRI影像特点,对诊断齿状突畸形的阳性率进行统计比较。结果 CT对游离型、缺如型和短小型齿状突阳性发现率均高于X线和MRI(P<0.05);X线对缺如型齿状突阳性发现率高于MRI(P<0.05);对寰枢不稳的诊断上,X线阳性率最高(80.6%),CT最低(41.9%);对脊髓受压的诊断上,MRI阳性率最高(100.0%),X线最低(28.0%),比较差异均有统计学意义(P<0.05)。结论 X线、CT和MRI对齿状突畸形的诊断均有一定的价值,将三者结合起来,可明显提高诊断的准确性。

Objective To compare the diagnostic value of X-ray,CT and MRI in the diagnosis of the deformity of the dentate gyrus. Methods The X-ray,CT and 3D reconstruction of 43 cases of the deformity of the teeth,and the characteristics of MRI imaging,were retrospectively analyzed. Results To free type,absence and short small odontoid positive rate of CT was higher than X-ray and MRI（ P〈 0. 05）; X-ray of absence type odontoid positive was higher than that of MRI（ P〈 0. 05）; diagnosis of atlantoaxial instability,the positive rate of X-ray was the highest（ 80. 6%）,CT is the lowest（ 41. 9%）; for the diagnosis of spinal cord compression and MRI positive rate was the highest（ 100%）, X-ray minimum（ 28. 0%）, the differences were statistically significant（ P〈 0. 05）. Conclusions X-ray,CT and MRI have a certain value in the diagnosis of the deformity of the dentate gyrus,and the combination of the three can improve the accuracy of diagnosis.