RT Journal Article SR Electronic T1 Intraoperative imaging in neurosurgery MRI, CT and ultrasound JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 515 OP 515 VO 75 IS 3 A1 J van Dellen YR 2004 UL http://jnnp.bmj.com/content/75/3/515.1.abstract AB