A study of repeat myelograms carried out in 93 patients revealed that the incidence of thecal scarring following Conray lumbar radiculography is high (61% of all cases), and only slightly lower than that found after Myodil myelography (74%). Possible factors affecting the incidence of arachnoiditis and the radiological and clinical significance of this condition are considered.
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Johnson et al. (1978) studied this question.
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