RT Journal Article SR Electronic T1 Presence of Activated Microglia in a High-Signal Lesion on T1-Weighted MR Images: A Biopsy Sample Re-Examined JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 602 OP 602 VO 28 IS 4 A1 Din-E Shan A1 Hung-Chi Pan A1 Donald M.T. Ho A1 Michael M.H. Teng A1 Chen Chang YR 2007 UL http://www.ajnr.org/content/28/4/602.abstract AB