Contrast between Scar and Recurrent Herniated Disk on Contrast-Enhanced MR Images. Victor Haughton, Ken Schriebman, and Arthur De Smet, Vol 23, Number 10, November/December 2002, pp. 1652–1656. The first sentence of the Discussion section should read, “This study supports the hypothesis that for patients with recurrent herniated disks, intervertebral disk fragments enhance less when an ionic contrast medium is used than when a nonionic contrast medium is used.
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