The information you found is correct, repeat scan in 2 weeks will tell us if there is any change in size of ventricles. If the size remains same or reduces, then its good news, your baby may not have any problem after birth. If the size increases, then the growing ventricles compress the brain matter. Nowadays a no. of surgeries can be done for this while the baby is inside the uterus
, like shunt placement, which prevents further damage to the brain.