RT Journal Article SR Electronic T1 MR Imaging of Asymptomatic Brainstem and Spinal Cord Lesions in Sisters with Neurofibromatosis JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP S71 OP S72 VO 10 IS 5 suppl A1 Tony Kim A1 Robert J. Foust A1 Saeid Mojtahedi YR 1989 UL http://www.ajnr.org/content/10/5_suppl/S71.abstract AB