Previous cumbersome methods involving instillation of isotope into the lumbar CSF and tracing its path by scintigraphy largely have been superseded by high definition CT and MR imaging, if necessary CT cisternography (fig 1).
Previous cumbersome methods involving instillation ofisotope into the lumbar CSF and tracing its path byscintigraphy largely have been superseded by high definitionCT and MR imaging, if necessary CT cisternography (fig 1).