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目的 :对比分析脊髓造影、脊髓造影 CT及 MRI在椎管内占位性病变中的作用。方法 :对资料完整的 6 4例椎管内占位性病变病人进行了脊髓造影、CTM、MRI影像学比较研究。脊髓造影采用常规脊髓造影和 CTM相结合 (以下称脊髓造影 )。CTM在常规脊髓造影后 4～ 6 h进行。 MRI采用 SE序列加 GE序列。椎管内占位性病变的病灶检出率、定位和定性准确率做一统计和分析。结果 :脊髓造影 CT与 MRI的检出敏感性分别为 88.6 % ,85 .7% ,定性准确率分别为 6 6 .2 % ,79.6 % ,定位准确率分别为 90 .6 % ,92 .3% ,病变检出率及定位准确率在造影与 MRI之间无显著差异 ,而定性准确率存在显著差异 ( P<0 .0 5 )。结论 :脊髓造影 CT与 MRI结合将有利于椎管内病变的检出、定位及定性能力的提高
Objective: To compare the effects of myelography, myelography CT, and MRI in occupying lesions in the spinal canal. Methods: Sixty-four cases of spinal canal lesions with complete data were studied by myelography, CTM, and MRI. Myelography uses a combination of conventional myelography and CTM (hereinafter referred to as myelography). CTM was performed 4 to 6 h after myelography. MRI uses SE sequences plus GE sequences. The rate of detection, positioning and qualitative accuracy of lesions in the lesions of the spinal canal were statistically analyzed. Results: The detection sensitivities of myelography CT and MRI were 88.6 % and 85.7%, respectively. The accuracy rates were 66.2% and 79.6 %, respectively. The accuracy of location was 90.6 % and 92.3% respectively. There was no significant difference in the detection rate of lesions and the accuracy of localization between angiography and MRI, but there was a significant difference in qualitative accuracy (P < 0.05). Conclusion : The combination of myelography CT and MRI will facilitate the detection, localization and qualitative improvement of the lesions in the spinal canal.