摘要
目的:探讨腔隙性脑梗死的影像学特点及其临床意义,比较MRI和CT的诊断价值。方法:对120例经临床、MRI诊断明确为腔隙性脑梗死患者的病灶形态大小、部位、数量进行统计。结果:①120例行MRI检查患者共发现病灶890个,最多见于豆状核(占40.8%),其次为放射冠、丘脑、内囊、尾状核、桥脑,可为圆形、椭圆形、条索状病灶。②32例既做CT,又做MRI患者中,MRI检出的病灶数为CT的5.1倍,其中绝大多数CT漏检病灶直径≤5mm或位于幕下。结论:①腔隙性脑梗死常为多发,且第一次临床发病时多数患者颅内已存在无症状性腔隙性脑梗死病灶;②腔隙性脑梗死灶易为CT忽略,尤其是幕下病灶或≤5mm的病灶,这是造成既往文献报道腔隙性脑梗死好发部位差异较大的一个主要原因;③尽管腔隙性脑梗死病灶较小(≤10mm),但大部分(60.0%)急性期存在在周边水肿,需要相应的临床治疗。
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-entorium. 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.
出处
《医学影像学杂志》
2005年第9期799-800,共2页
Journal of Medical Imaging
关键词
腔隙性脑梗死
磁共振成像
体层摄影术
X线计算机
Cerebral lacunar infaction
Magnetic resonance imaging
Tomography, X-ray computed
