J Korean Soc Magn Reson Med.  2010 Dec;14(2):126-133. 10.13104/jksmrm.2010.14.2.126.

Three-Dimensional Brain Surface Rendering Imaging of Cortical Dysplasia

• Hwang SB
• Kwak HS
• Lee SY
• Jin GY
• Han YM
• Chung GH

• KMID: 2206910
• DOI: http://doi.org/10.13104/jksmrm.2010.14.2.126

Abstract

PURPOSE
The study was to evaluate the localization of the abnormal gyral and sulcal patterns obtained by means of brain surface rendering imaging.
MATERIALS AND METHODS
Nineteen patients with cortical dysplasia who underwent brain surface rendering MR imaging were included in this study. We acquired MP-RAGE sequence and created the 3-D surface rendering MR images by using VoxelPlus(R). Anatomical locations and configurations of abnormal gyri and sulci were reviewed.
RESULTS
Abnormal gyral and sulcal patterns were seen 18 in 19 patients. The configuration and orientation of affected gyri and sulci were clearly evaluated in the brain surface rendering images. In a lissencephaly, the a cortex was not delineated and showed markedly thick and smooth gyral pattern. In a schizencephaly, there were wheel shaped broad gyral pattern around the cleft. In a hemimegalencephaly, an affected hemisphere were enlarged and displayed thick and wide gyral pattern. In CBPS, the insular cortex was exposed and the gyri of the lesion were thickened. In focal cortical dysplasia, there were irregular serrated or thick and enlarged gyri.
CONCLUSION
Brain surface rendering MR imaging is useful for the evaluation of a detailed gyral pattern and accurate involvement site of abnormal gyri.

Keyword

Brain; Magnetic resonance (MR); Cortical dysplasia; Surface rendering

MeSH Terms

Brain
Humans
Lissencephaly
Malformations of Cortical Development
Orientation

Figure

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  Fig. 1 Focal cortical dysplasia. Axial and coronal MP RAGE T1 weighted images show the cortical dysplasia in right frontoparietal area(a). 3D surface rendering images show an enlarged right frontoparietal gyri. The involved gyri show irregular serrated surface in right superior and inferior frontal, parietal lobes. The abnormal gyral patterns of involved gyri are clearly delineated from surrounding normal gyri in right cerebral hemisphere arrows (b).

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  Fig. 2 Lissencephaly. 3D surface rendering images show scant sulcation with a thick and smooth gyral pattern in both frontoparietal cortex.

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  Fig. 3 Schizencephaly. 3D surface rendering images show open-lip schizencephalic defect in right-side and closed-lip defect in left-side lined by pachygyria. There are central cleft with radiating thickened gyri of right frontoparietal lobes.

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  Fig. 4 Hemimegalencephaly. 3D surface rendering images show an enlarged right cerebral hemisphere with thickened gyri in right superior frontal, parietal and occipital lobes.

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  Fig. 5 Congenital bilateral perisylvian syndrome. The characteristic 3D surface rendering images show opened both sylvian fissure. The exposed insular cortex consists of the irregular thickened gyral pattern. Both temporal lobes consists of vertically oriented gyri.

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  Fig. 6 Double cortex syndrome. Areas which are clearly shown are: precentral gyrus, postcentral gyrus, superior parietal lobules, precentral sulcus, central sulcus. There are normal findings of brain sulcal and gyral pattern.

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