PT - JOURNAL ARTICLE AU - Numaguchi, Y AU - Weems, A M AU - Mizushima, A AU - Keating, J AU - Rege, A B AU - Mather, F J AU - Rice, J C TI - Myelography with metrizamide: effect of contrast removal on side effects. DP - 1986 May 01 TA - American Journal of Neuroradiology PG - 498--501 VI - 7 IP - 3 4099 - http://www.ajnr.org/content/7/3/498.short 4100 - http://www.ajnr.org/content/7/3/498.full SO - Am. J. Neuroradiol.1986 May 01; 7 AB - Moderately severe side effects, such as prolonged headache, nausea, vomiting, or psychoneurologic symptoms, were noted in 27 (32%) of 84 patients in whom the contrast medium was not removed. Conversely, among 73 patients from whom 20-25 ml of cerebrospinal fluid with the contrast medium was removed, only 10 (14%) experienced adverse effects, a statistically significant reduction. Although new contrast agents, such as iohexol and iopamidol, are reportedly less toxic than metrizamide, the contrast-removal technique described here may be indicated when large amounts of any contrast medium are used.