Tantiwongkosi Bundhit, Hesselink John R
Division of Neuroradiology, Department of Radiology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, Mail Code 7800, San Antonio, TX 78229, USA; Division of Neuroradiology, Department of Otolaryngology Head Neck Surgery, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, Mail Code 7800, San Antonio, TX 78229, USA; Imaging Service, South Texas Veterans, 7400 Merton Minter, San Antonio, TX 78229, USA.
Division of Neuroradiology, Department of Radiology, UCSD Medical Center, 200 West Arbor Drive, San Diego, CA 92103-8749, USA.
Neuroimaging Clin N Am. 2015 Aug;25(3):425-38. doi: 10.1016/j.nic.2015.05.006.
Eye movement is controlled by ocular motor pathways that encompass supranuclear, nuclear, and infranuclear levels. Lesions affecting certain locations may produce localizing signs that help radiologists focus on specific anatomic regions. Some pathologic conditions, such as aneurysms and meningiomas, have unique imaging characteristics that may preclude unnecessary tissue biopsies. Some conditions are life threatening and require urgent or emergent imaging. MR imaging is the imaging of choice in evaluation of ocular motor palsy, with magnetic resonance angiography or computed tomography angiography indicated in cases of suspected aneurysms or neurovascular conflicts.
眼球运动由包括核上、核及核下水平的眼动神经通路控制。影响某些部位的病变可能产生定位体征,有助于放射科医生将注意力集中在特定的解剖区域。一些病理状况,如动脉瘤和脑膜瘤,具有独特的影像学特征,可能避免不必要的组织活检。有些情况危及生命,需要紧急或急诊成像。磁共振成像(MR成像)是评估眼肌麻痹的首选成像方法,对于疑似动脉瘤或神经血管冲突的病例,需进行磁共振血管造影或计算机断层血管造影。