The MRI research and comparison with CT of cerebral lacunar infaction

Objective:To study the imaging features and the clinical significance of lacunar infarction and to compare the diagnostic value of CT and MRI.Methods:120 patients were definitely diagnosed as lacunar infarction by clinic and MRI.The size,location and number of infarction lesions were analyzed.Results:① 890 lesions which were mostly located in lentiform nucleus(40.8%),then in corona radiata,dorsal thalamus,internal capsule,caudate nucleus and pons were detected by MRI in 120 cases.The lesions were round,oval,or curvilinear;② 32 cases were examined both by CT and MRI.The number of lesions detected by MRI were 5 times more than CT.Most lesions of which diameters were less than 5mm and which were located sub-tentorium were missed by CT.Conclusion:Lacunar infarction usually has multiple lesions and most patients always have a few brain infarction lesions before they appear clinical symptoms.. Lacunar infarction is easily missed diagnosis on CT,especially those diameters of which are less than 5mm and those locations of which are sub-tentorium.That is a major cause of different location reported in some literature;③ Though the lacunar infarction lesion is small(10mm),most of them should be treated because there is edema in ambient of lesion.