MRI
At what stage does the insult occur to result in primary agenesis of the corpus callosum?
In the first trimester of pregnancy between 8-12 weeks.
What is the alternative name for the characteristic moosehead helmet appearance of the ventricles?
Viking's helmet appearance.
The corpus callosum is completely absent. Widely spaced lateral ventricles, narrow frontal horns, high riding 3rd ventricle are some of the characteristic features demonstrated.
On the sagittal images, the corpus callosum is completely absent. Widely spaced lateral ventricles, narrow frontal horns, high riding 3rd ventricle are some of the characteristic features demonstrated.