Moon Eun-Su, Kim Hak-Sun, Park Jin-Oh, Shin Dong-Eun, Ha Jung-Won, Shim Dong-Jun, Kwak Yoon-Hae, Lee Kwang-Il
Department of Orthopaedic Surgery, Yongdong Severance Hospital, Yonsei University College of Medicine, Dogok-dong, Kangnam-gu, Seoul 135-720, Korea.
Yonsei Med J. 2005 Dec 31;46(6):806-11. doi: 10.3349/ymj.2005.46.6.806.
To date, there have been no prospective, objective studies comparing the accuracy of the MRI, myelo-CT and myelography. The purpose of this study is to compare the diagnostic and predictive values of MRIs, myelo-CTs, and myelographies. Myelographies with dynamic motion views, myelo-CTs, MRIs and exercise treadmill tests were performed in 35 cases. The narrowest AP diameter of the dural sac was measured by myelography. At the pathologic level, dural cross-sectional area (D-CSA) was calculated in the MRI and Myelo-CT. The time to the first symptoms (TAF) and the total ambulation time (TAT) were measured during the exercise treadmill test and used as the standard in the comparison of correlation between radiographic parameters and walking capacity. The mean D-CSA by CT was 58.3 mm(2) and 47.6 mm(2) by MRI. All radiographic parameters such as AP diameters and D-CSA have no correlation to TAF or TAT (p > 0.05). Our data showed no statistically significant differences in the correlation of the patients' walking capacity to the severity of stenosis as assessed by myelography, myelo-CT and MRI.
迄今为止，尚无前瞻性、客观性研究比较MRI、脊髓CT和脊髓造影的准确性。本研究的目的是比较MRI、脊髓CT和脊髓造影的诊断及预测价值。对35例患者进行了动态运动视图脊髓造影、脊髓CT、MRI及运动平板试验。通过脊髓造影测量硬脊膜囊最窄前后径。在病理层面，在MRI和脊髓CT上计算硬脊膜横截面积（D-CSA）。在运动平板试验期间测量首次出现症状的时间（TAF）和总步行时间（TAT），并将其作为比较影像学参数与步行能力之间相关性的标准。CT测量的平均D-CSA为58.3平方毫米，MRI测量的为47.6平方毫米。所有影像学参数，如前后径和D-CSA，与TAF或TAT均无相关性（p>0.05）。我们的数据显示，通过脊髓造影、脊髓CT和MRI评估，患者步行能力与狭窄严重程度之间的相关性无统计学显著差异。
