RT Journal Article
SR Electronic
T1 Accuracy of stereotaxic localisation using MRI and CT.
JF Journal of Neurology, Neurosurgery & Psychiatry
JO J Neurol Neurosurg Psychiatry
FD BMJ Publishing Group Ltd
SP 1445
OP 1448
DO 10.1136/jnnp.49.12.1445
VO 49
IS 12
A1 D J Wyper
A1 J W Turner
A1 J Patterson
A1 B R Condon
A1 K W Grossart
A1 A Jenkins
A1 D M Hadley
A1 J O Rowan
YR 1986
UL http://jnnp.bmj.com/content/49/12/1445.abstract
AB The accuracy of stereotaxic coordinates determined using the Leksell apparatus with CT and MRI was investigated using an Agar filled head phantom. Both imaging techniques were found to produce an accuracy of better than 2 mm with the exception of the Z coordinate as measured by CT (2.3 mm). This latter error is greater because of the 3 mm slice width used. Direct coronal views were used to determine Z more accurately using MRI. The measurement procedures are described and it is shown that the Leksell system of using orthogonal coordinates enables the scaling of images, which is particularly necessary with MRI, to be done easily.