[Production of experimental craniocerebral trauma]

Ultrasonics was used to produce a heavy post-traumatic brain oedema. The oedema that developed rapidly within 6 to 8 hours after the injury expanded intracellularly only without destroying any neurogen structures. Examinations with an electron microscope showed massive swelling of the astroglia, mainly in the area of the astrocytal processus in both of the hemispheres, that means even in the contralateral hemisphere away from the trauma. The intracranial pressure increased rapidly.