RESUMO
Objective To study the MRI features of toxoplasmosis encephalopathy.Methods There were totally 20 cases in the group,all patients accepted the examinations of MRI and immunisation sylum(EIISA) with Gd-DTPA enhanced MRI in 17 cases and repeted MRI in 15 cases.5 cases undengone stero-orientation biopsy under CT guided.Results Most of the focus situated at the juncture of gray and white matter of cerebral hemisphere (8 cases) and around the lateral ventricle (6 cases).The lesion was multiple .The lesions had different degrees of contrast enhancement after enhanced scans (17 cases),among them,the patchy enhancement was most commonly seen (9 cases),secondarily was circular or semicircular enhancemeut (7 cases).The immunological serum examination in all the cases were positive IgM or IgG.The treatment for anti-toxoplasma was in effect for all the cases.Conclusion MRI is of significant value in definiting the involved location,extent,time course of toxoplasmosis encephalopathy,and also evaluating the effect of therapy.