RT Journal Article SR Electronic T1 Magnetic resonance imaging JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 318 OP 325 DO 10.1136/jnnp.2006.091843 VO 6 IS 5 A1 Farrall, Andrew J YR 2006 UL http://pn.bmj.com/content/6/5/318.abstract AB