Article Figures & Data
Figures
- Fig 1.
A 3-month-old boy with right hemimegalencephaly.
A and B, Coronal T2-weighted images demonstrate a diffusely enlarged right olfactory nerve from the exit to the distal portion (arrows). The left nerve is not enlarged.
B, Superficial cortical veins are asymmetrically dilated on the right (arrowheads).
- Fig 2.
A 7-month-old boy with left hemimegalencephaly.
A, Axial FLAIR image shows an asymmetrically enlarged left optic nerve (arrow).
B, Coronal T1-weighted image reveals findings similar to those in A (arrow).
C, Coronal T2-weighted image reveals asymmetry of the olfactory nerves (arrow), as well, with the left one slightly larger than the right at the exit zone (arrowhead).
- Fig 3.
An 8-month-old girl with right hemimegalencephaly. Axial T2-weighted image shows an asymmetrically dilated right internal cerebral vein (arrow).
- Fig 4.
A 4-month-old boy with right hemimegalencephaly. Coronal T2-weighted image shows markedly dilated superficial cerebral cortical vessels (arrows) and subependymal veins (arrowhead) on the ipsilateral side.
- Fig 5.
A 4-month-old girl with right hemimegalencephaly.
A, Axial T2-weighted image demonstrates asymmetry of the medulla oblongata and hemicerebellum with abnormal folia.
B, Axial T2-weighted image shows asymmetry of the pons and hemicerebellum.
C, Axial T2-weighted image also shows an asymmetric midbrain. The findings for this case are compatible with total hemimegalencephaly.
- Fig 6.
A 4-month-old boy with left hemimegalencephaly.
A, Axial T2-weighted image shows an asymmetrically enlarged left hemicerebellum. No asymmetry of the brain stem is noted.
B, Coronal FLAIR image also shows asymmetry of both the left hemicerebrum and hemicerebellum.
- Fig 7.
A 6-month-old boy with right hemimegalencephaly.
A and B, Coronal T2-weighted images demonstrate abnormal folia in both ipsilateral and contralateral cerebellar hemispheres.
