RT Journal Article SR Electronic T1 Differentiation between postoperative scar and recurrent disk herniation: prospective comparison of MR, CT, and contrast-enhanced CT JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP S87 OP S91 DO 10.3174/ajnr.45-12.S87 VO 45 IS 12 YR 2024 UL http://www.ajnr.org/content/45/12/S87.abstract AB