张蕾,赵莲萍,刘斯润,贾艳滨,钟舒明,孙尧,王希希,黄力,王颖.分析未治疗抑郁症患者丘脑及基底核微观结构和血流灌注[J].中国医学影像技术,2018,34(2):176~180
分析未治疗抑郁症患者丘脑及基底核微观结构和血流灌注
Analysis of microstructure and blood perfusion in thalamus and basal ganglia in patients with untreated depressive disorder
投稿时间:2017-09-13  修订日期:2017-11-28
DOI:10.13929/j.1003-3289.201709068
中文关键词:  抑郁症  基底核  丘脑  磁共振成像  扩散峰度成像  脑血流量
英文关键词:Depression  Basal ganglia  Thalamus  Magnetic resonance imaging  Diffusion kurtosis imaging  Cerebral blood flow
基金项目:国家自然科学基金(81501456、81671670、81471650)。
作者单位E-mail
张蕾 暨南大学附属第一医院影像中心, 广东 广州 510632
暨南大学附属第一医院综合病区, 广东 广州 510632 
 
赵莲萍 甘肃省人民医院放射科, 甘肃 兰州 730000  
刘斯润 暨南大学附属第一医院影像中心, 广东 广州 510632  
贾艳滨 暨南大学附属第一医院精神心理科, 广东 广州 510632  
钟舒明 暨南大学附属第一医院精神心理科, 广东 广州 510632  
孙尧 暨南大学附属第一医院影像中心, 广东 广州 510632  
王希希 暨南大学附属第一医院综合病区, 广东 广州 510632  
黄力 暨南大学附属第一医院影像中心, 广东 广州 510632  
王颖 暨南大学附属第一医院影像中心, 广东 广州 510632 johneil@vip.sina.com 
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中文摘要:
      目的 采用扩散峰度成像(DKI)和三维动脉自旋标记灌注技术(3D ASL)分析未治疗抑郁症患者丘脑和基底核微观结构和血流灌注的改变。方法 收集未治疗抑郁症患者21例(病例组)及健康志愿者32名(对照组),均接受DKI、3D ASL及常规MR扫描,测量并比较2组间双侧丘脑、尾状核头、壳核的DKI参数和扩散参数,以及3D ASL参数的差异。结果 与对照组比较,病例组左侧尾状核头Ka值增高、Kr值减低(P均< 0.05),右侧壳核Ka值增高(P均< 0.05),左侧尾状核头及双侧壳核CBF显著减低(P均< 0.05)。结论 未治疗抑郁症患者存在基底核DKI参数及血流灌注的异常,提示基底核区微观结构完整性受损、血流灌注减低,可能是抑郁症的神经影像学特征之一。
英文摘要:
      Objective To investigate the changes of microstructure and blood perfusion of thalamus and basal ganglia in patients with untreated depressive disorder using diffusion kurtosis imaging (DKI) and three-dimensional arterial spin labeling (3D ASL) perfusion imaging. Methods Totally 21 untreated patients with depressive disorder (disease group) and 32 healthy volunteers (control group) underwent DKI, 3D ASL and routine MR scanning were enrolled. DKI parameters (mean kurtosis, axial kurtosis, radial kurtosis, fractional anisotropy, mean diffusivity, axial diffusivity and radial diffusivity) and 3D ASL parameters (cerebral blood flow) of bilateral heads of caudate nucleus, thalamus and putamens were measured and compared between the 2 groups. Results Compared with control group, Ka of left caudate head in disease group was significantly higher, while Kr was significantly lower (both P<0.05). Ka of right putamens in disease group was significantly higher than that in control group (P<0.05). Compared with control group, CBF of left caudate head and bilateral putamens decreased significantly in disease group (all P<0.05). Conclusion Untreated depressed patients show abnormal DKI parameters and blood perfusion in basal ganglia, which indicating that microstructure integrity is impaired and blood perfusion decreases. The abnormalities in basal ganglia microstructure and blood perfusion may serve as one of the neuroimaging features of depressive disorders.
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