1. Graph of the contrast ratio between scar and recurrent disk fragment as a function of time after injection of 0.1 mmol/kg ionic (M) and nonionic (O) contrast medium.
Graph of the contrast ratio between scar and recurrent disk fragment as a function of time after injection of 0.1 mmol/kg ionic (M) and nonionic (O) contrast medium. The contrast radio tended to decrease with time (arithmetic mean ± SD, n = 20).
Jui-Sheng Hsu et al. AJNR Am J Neuroradiol 2004;25:
©2004 by American Society of Neuroradiology