CT,MR and MRS Diagnosis of Basal Ganglia Infarction / 实用放射学杂志

ABSTRACT

Objective To discuss imaging differentiating diagnosis of basal ganglia infarction by summarizing the features of 17 lesions on CT and MRI.Methods Among 17 cases, 6 were children occurred after their injury, and ranged in age from 5 to 11 years old with average 8 years old. Others were adults ranged in age from 53 to 78 years old with average 63 years old. All patients were examined with CT plain scans. 11 cases were underwent MRI and 5 were underwent 1 H MRS.Results 6 lesions in children were all single lateral cases. Among 11 adult lesions, 10 were single lateral and 1 was bilateral case. Basal ganglia infarctions demonstrated hyposignal on T_1WI, hypersignal on T_2WI and hypodense on CT. The lateral ventricles' anterior horns of the same side were pressed and narrow. On 1 H MRS, Lac was obviously observed in all lesions. NAA decreased markedly in 4 lesions and slightly in 1 lesion. 2 basal ganglia infarctions were together with hemorrhage.Conclusion Basal ganglia infarctions were mainly observed in the elder with arteriosclerosis and injured children. Its features on CT and MRI are characteristic, but it is in need of differentiating from basal ganglia lesions caused by other reasons. Marked Lac on 1 H MRS is its character.