High-Speed Angiography of Experimental Head Injury,
ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD
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Cineangiograms were performed at 1000 frames per second in anesthetized rhesus monkeys during 4 msec impact head injuries. Impacts that did not fracture the skull resulted in rapid transient movements of intracranial arteries. Lateral blows distorted the ipsilateral middle cerebral artery and reversibly displaced the anterior cerebral artery across the midline. Occipital blows distorted the peripheral branches of the middle and posterior cerebral arteries, and produced marked stretching of extracranial vessels. These data indicate that much of the intracranial movements hypothesized as etiologic in brain injury occurs in the first milliseconds following trauma. This technique allows for quantification of these interior events to aid in the understanding of traumatic brain injury.
- Medicine and Medical Research