Ross J S, Masaryk T J, Modic M T, Delamater R, Bohlman H, Wilbur G, Kaufman B
Department of Radiology, University Hospitals of Cleveland, Case Western Reserve University, OH 44106.
AJR Am J Roentgenol. 1987 Nov;149(5):1025-32. doi: 10.2214/ajr.149.5.1025.
To assess the usefulness of MR in defining the changes of lumbar arachnoiditis, we reviewed retrospectively the MR, plain-film myelographic, and CT myelographic findings in 100 patients referred for evaluation of failed-back-surgery syndrome. In 11 of 12 cases of arachnoiditis demonstrated by plain-film and CT myelography, an abnormal configuration of nerve roots was seen by MR. The correlated MR and CT and plain-film myelographic changes were divided into three anatomic groups: group 1 showed conglomerations of adherent roots residing centrally within the thecal sac, group 2 demonstrated roots adherent peripherally to the meninges giving rise to an "empty-sac" appearance, and group 3 demonstrated a soft-tissue mass replacing the subarachnoid space. There was one false-negative MR study. For the diagnosis of moderate to severe arachnoiditis, we found MR to correlate excellently with CT myelographic and plain-film myelographic findings.
为评估磁共振成像（MR）在明确腰椎蛛网膜炎变化方面的作用，我们回顾性分析了100例因腰椎手术失败综合征前来评估的患者的MR、平片脊髓造影及CT脊髓造影结果。在平片和CT脊髓造影显示的12例蛛网膜炎病例中，有11例通过MR观察到神经根形态异常。MR与CT及平片脊髓造影的相关变化分为三个解剖学组：第1组显示粘连的神经根聚集于硬膜囊中央；第2组显示神经根周围粘连于脑膜，形成“空囊”外观；第3组显示软组织肿块取代蛛网膜下腔。有1例MR检查结果为假阴性。对于中重度蛛网膜炎的诊断，我们发现MR与CT脊髓造影及平片脊髓造影结果高度相关。
