Summary
A randomised blind trial comparing Iopamidol (Niopam) and Metrizamide (Amipaque) for lumbar radiculography was performed in 100 patients. Significantly more patients receiving Metrizamide complained of having severe headaches (P<0.05) and vomiting (P<0.05). There was no difference in quality of the radiculograms.
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References
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McAllister, V.L., Hall, K. A randomized blind trial of Iopamidol (Niopam) and Metrizamide (Amipaque) in lumber radiculography. Neuroradiology 24, 217–218 (1983). https://doi.org/10.1007/BF00399774
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DOI: https://doi.org/10.1007/BF00399774