Answers are grounded in this paper and cite their sources.
Two non-ionic contrast media, iohexol and metrizamide, were compared in a double-blind clinical trial which included 50 patients who underwent lumbar myelography for disc herniation or spinal stenosis. The frequency of adverse reactions was lower for iohexol which is recommended for extended trials and for examination of other compartments of the subarachnoid space.
No takes yet. Share an insight, caveat, or question.
Hindmarsh et al. (1984) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: