The CT Evolution and the Changes of Hemodynamics of Acute Cerebral Infarction Caused by Unilateral Middle Cerebral Artery Embolism

Objective To investigate the CT evolution and the changes of hemodynamics of acute cerebral infarction caused by unilateral middle cerebral artery embolism. Methods Analyzed the CT performance of acute cerebral infarction and relation among the CT, clinical symptom and the cerebral artery perfusion. A total of 60 patients accepted CT scan 0.5-6 hours after the clinical symptom appeared. And the following CT, MRI or DSA scan showed that the artery embolism caused by cerebral infarction in the brain are unilateral, and all the patients with no internal carotid artery and anterior cerebral artery embolism. Results 60 cases of patients with acute cerebral infarction 57 cases showed positive findings, 23 cases of middle cerebral artery sign high density, density and basal ganglia decreased in 55 cases, the insular low density in 42 cases, local cerebral cortical density decreased in 40 cases, and local brain tissue swelling in 36 cases. The clinical symptoms of 23 cases were severe, 22 moderate cases, mild in 15 cases. Conclusion The distribution of acute cerebral infarction was relevant with the distribution of M1, M2, M3, M4, M5 segment. The earliest lesions from proximal to distal extension is in turn: 1 middle cerebral arterial high density sign; 2 basal ganglia lower density; 3 temporal anterior lobe insular under low density; 4 dorsal lateral front part of the brain the frontal-temporal parietal junction cortex decreased density of brain; 5 dorsal lateral posterior occipital and posterior parietal cortex decreased density. The severity of the Clinical symptoms has relation ship to the location and the range of the infarction on CT, P0.05.