MR imaging surface display of the cerebral cortex in children

Abstract

The purpose of this study was to introduce the use of three-dimensional (3D) surface MR imaging display for clinical use. Surface display was created using images acquired with T1 magnetization prepared rapid acquisition gradient echo (MPRAGE) in 24 cases of migrational defects, cortical dysplasia and prenatal asphyxia. Schizencephaly and cortical dysplasia were pathologically confirmed. The precise configurations of cortical abnormalities, and their relation to the adjacent gyri and sulci were demonstrated. The topography of schizencephalic clefts was clearly defined. The appearance of ulegyria was characteristic and it was sometimes possible to differentiate polymicrogyria from pachygyria.

Occipital lobe epilepsy secondary to ulegyria

“…Although some texts report that ulegyria is usually unilateral, seven of our eight patients had bilateral involvement [11,16]. Interictal and ictal EEG recordings in our cases showed predominantly temporal lobe or poorly localized epileptiform activity, while seizure semiology after the aura was consistent with frontal and temporal lobe activation.…”

“…Compared with Villani's patients, all of whom had drug- [25] 7* Extratemporal lobe epilepsy caused by ulegyria. Surgical treatment Lopez-Gonzalez et al 1996 [12] 1 Mild mental retardation, occipital lesion Lee et al 1997 [11] Use of 3D-MRI in the diagnosis of ulegyria Guerrini et al 1997 [7] -MRI differences with polymicrogyria Villani et al 2003 [22] 9…”

Misrepresentation of surface rendering of pediatric brain malformations performed following spatial normalization

“…Volume rendering provides a 3D view of the surface and therefore has a potential in assisting the surgeon in preoperative planning (9). Volume rendering is potentially a useful adjunct to standard image review when displaying the abnormal gyri and sulci associated with cortical malformations, and may help in defining the extent of the abnormality.…”

Importance of Veins for Neurosurgery as Landmarks Against Brain Shifting Phenomenon: An Anatomical and 3D-MPRAGE MR Reconstruction of Superficial Cortical Veins

“…Digital Subtraction Angiography (DSA) was the gold standard for intracranial vascular imaging until a few years ago, but it is an invasive procedure with a non-negligible rate of complications (von Lanz and Wachsmuth, 1985;Laub, 1994;West et al, 1997). The method of choice for presenting and evaluating cerebral veins has been described in the literature (Huber, 1982;Lee et al, 1997). The bridging veins and the large cortical anastomotic veins examined in this study can be visualized with CT angiography in 76-97% of cases.…”