岛叶解剖学及MRI研究

Anatomy and MR imaging of the insular

目的研究岛叶局部解剖，分析岛叶MRI表现，确定适当界标，为岛叶功能研究及岛叶病变的诊治提供指导。方法对12个尸头进行解剖研究，分析80份1．5TMRI岛叶表现特征。结果轴位MRI，内囊与外囊交点界定岛叶前界；矢状位前、上、下环岛沟是其明确边界，岛叶中央沟将岛叶分成前、后小叶；冠状位前小叶位于后小叶背上方，岛叶中央沟是前小叶下缘、后小叶上缘；VAC与岛叶的交点最常位于岛叶中央前沟，VPC界定岛叶后界。结论1．5TMRI可清晰显示岛叶细微结构，能准确复现并评估岛叶解剖特征。

Objective To observed the topographic anatomy of the insular region, analysis MR images appearance, definite suitable landmark. Guide function research and clinical diagnose and therapy in insular region. Methods To study the insular anatomy in 12 human cadaveric, analyzed the patterns of insular on the 1.5-T MRI of 160 insular. Results Axial MRI, junctions of the internal and external capsules defined the anterior border of the insular. Sagittal MRI, The insular is separated from the opercula by the anterior, superior, and inferior periinsular sulci. Central sulcus of the insular divided the insular into anterior（larger） and posterior （smaller） lobule. The anterior lobule maintained a dorsal position in relation to the posterior lobule. The central sulcus was the inferior border of the anterior lobule and the superior border of the posterior lobule;VAC intersects usually at the precentral sulcus. VPC demarcates the posterior insular border. Conclusion 1.5T MR images can demonstrable detailed anatomical study of the insular region, precise reproducible and evaluate patterns of anatomy.