磁共振磁敏感加权成像及常规磁共振成像对中枢神经系统表面铁沉积症的诊断价值  

Diagnostic value of susceptibility weighted imaging and conventional magnetic resonance imaging in superficial siderosis of the central nervous system

作　　者：石洋洋 李贤军[2] 武辽军 李华[1] 陈苗苗[1] SHI Yangyang;LI Xianjun;WU Liaojun;LI Hua;CHEN Miaomiao(Imaging Center,Yulin No.2 Hospital,Yulin 719000;Radiolgy Department,the First Affiliated Hospital of Xi'an Jiaotong University,Xi'an 710061,China)

机构地区：[1]榆林市第二医院影像中心,陕西榆林719000 [2]西安交通大学第一附属医院放射科,陕西西安710061

出　　处：《临床医学研究与实践》2021年第31期108-111,共4页Clinical Research and Practice

基　　金：国家自然科学基金资助项目(No.81901823);陕西省榆林市科技计划项目(No.2019-59)。

摘　　要：目的分析磁共振磁敏感加权成像(SWI)及常规磁共振成像(cMRI)对中枢神经系统表面铁沉积症(SSCNS)的诊断价值。方法收集2015年1月至2021年1月我院经临床及影像学检查确诊为SSCNS的7例患者的完整资料,所有患者均行c MRI和SWI检查,分析其检查结果。结果7例患者中,有具体病因4例(病因分别为枕部局限性脑膜膨出、椎管内占位、海绵状血管瘤、腰椎外伤手术),病因不清3例。SSCNS主要累及大脑、脑干、小脑及脊髓边缘,cMRI主要表现为T2WI连续线状低信号,SWI显示的病灶范围更为广泛,且对微小病灶更加敏感。SWI显示病灶33个,T2WI显示病灶20个,FLAIR显示病灶18个,T1WI显示病灶8个,SWI对SSCNS的检出更具优势。结论cMRI及SWI是诊断SSCNS的主要手段,可确定出血来源,利于早期开展手术,防止神经系统症状进一步加重,虽然其仍然不能明确部分出血来源,但是可以为病因诊断提供线索。cMRI及SWI在SSCNS中具有特征表现,SWI对病变显示更加敏感、准确,是诊断SSCNS的有益补充。Objective To analyze the diagnostic value of susceptibility weighted imaging(SWI)and conventional magnetic resonance imaging(cMRI)in superficial siderosis of central nervous system(SSCNS).Methods The complete data of 7 patients with SSCNS diagnosed by clinical and imaging examination in our hospital from January 2015 to January 2021 were collected.All patients underwent cMRI and SWI examination,and the examination results were analyzed.Results Among 7 patients,there were 4 cases with specific etiology(etiology were occipital localized meningocele,space occupying in spinal canal,cavernous hemangioma and lumbar trauma surgery,respectively),and the etiology was unclear in 3 cases.SSCNS mainly involved the brain,brainstem,cerebellum and spinal cord margin.cMRI mainly showed continuous linear low signal on T_(2)WI,and SWI showed a wider range of lesions and was more sensitive to small lesions.SWI showed 33 lesions,T_(2)WI showed 20 lesions,FLAIR showed 18 lesions and T_(1)WI showed 8 lesions.SWI had more advantages in the detection of SSCNS.Conclusion The cMRI and SWI are the main means to diagnose SSCNS,which can determine the source of bleeding,facilitate early surgery and prevent further aggravation of neurological symptoms.Although cMRI and SWI still can not identify some sources of bleeding,they can provide clues for etiological diagnosis.The cMRI and SWI in SSCNS have characteristic manifestations.SWI is more sensitive and accurate in the display of lesions,which is a useful supplement for the diagnosis of SSCNS.

关 键 词：磁共振磁敏感加权成像 常规磁共振成像 中枢神经系统表面铁沉积症 

分 类 号：R73[医药卫生—肿瘤]