Ka. Leber et al., LOCALIZATION OF SUPERFICIAL CEREBRAL-LESIONS USING A MAGNETIC-RESONANCE IMAGING-GUIDED LOCALIZER, Minimally invasive neurosurgery, 38(2), 1995, pp. 87-89
The localization of superficial cerebral lesions may be difficult even
if they reach the surface of the cerebral cortex. Intraoperative ultr
asound often fails to detect subcortical lesions. A localization devic
e using multiplanar MR-imaging has been designed to project such lesio
ns to the scalp. This device is a hood-shaped grid made of polyethylen
e tubing filled with paramagnetic contrast agent. In this hemispherica
l grid the tubes are arranged at a distance of 15 to 30 mm so that the
MR-plane always slices perpendicular to the axis of the tubing and de
picts a bright spot per tube. It is rapidly filled prior to each MR-ex
amination, placed on the patient's head, and taped to his forehead to
avoid unintentional displacement during and after the examination unti
l the projection of the lesion is marked on the skin.