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血管性认知障碍及其功能影像学的研究进展 Progress of Vascular Cognitive Impairment and Its Functional Imageology
血管性认知障碍(vascular cognitive impairment,VCI)患病率逐年增加,现已成为老年人 群中主要的致残原因,但目前尚缺乏有效的治疗手段。近年来磁共振成像技术迅速发展,尤其是功 能影像学,如血氧水平依赖功能磁共振(blood oxygen level dependent functional magnetic resonance i magi ng,BLOD-fMRI)、磁共振波谱技术(magnetic resonance spectroscopy,MRS)、灌注加权成像技术 (
贺梦菲,尹昌浩,曹文慧,孙文强,赵维纳
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急性缺血性卒中是导致急性脑组织损伤的重要原因,是中老年人致残、死亡的主要因素,可挽救缺血组织的早期发现是临床及时干预治疗的关键。随着功能磁共振成像技术的发展,临床可从水分子扩散、血流动力学、氧合水平、pH值、代谢及侧支循环等方面全方位评价脑组织的病理改变,为疾病进展及预后评估提供更全面的信息。本文综述急性缺血性卒中缺血性半暗带功能磁共振成像的研究进展,以期为卒中患者的评估和治疗计划提供影像学支撑与指导。 Abstract: Acute ischemic stroke is one of the ...
陈扬, 张婧, 陈芬, 丁杏, 陈昆涛
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目的 本国际临床指南由欧洲残疾儿童学会(the European Academy of Childhood Disability,EACD)牵头制定,旨在解决发育性协调障碍(developmental coordination disorder,DCD)的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题,通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础,以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类,最终转化为指南建议。并由国际 ...
Jing Hua +6 more
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ABSTRACT Objective To determine whether ultrasound is non‐inferior to positron‐emission tomography/computed tomography (PET/CT) and diffusion‐weighted magnetic resonance imaging (DW‐MRI) in terms of overall diagnostic accuracy for the preoperative assessment of pelvic lymph‐node status in cervical cancer.
F. Frühauf +14 more
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Background The impairment of cognitive function is one of the core symptoms in schizophrenia, and the degree of recovery is closely related to whether patients are able to rejoin society successfully. Objective This study was to clarify the correlation between cognitive function and cerebral grey matter volume in schizophrenia.
Xinyue Zhang +6 more
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变压器铁心振动的主要来源为硅钢片的磁致伸缩以及片间、接缝处的电磁力。铁心压紧力不足引起松动故障时,其振动发生变化,进而引起辐射噪声变化。文中搭建了基于声学传感阵列的铁心振动声成像实验平台,采用扭矩扳手调节紧固螺栓的拧紧力矩,研究铁心表面辐射噪声随松动程度的变化规律。基于112通道声学传感阵列数据,利用"延迟求和"波束形成算法获得声学图像并进行图像处理,生成灰度共生矩阵并提取特征值,得到了图像特征值与铁心不同程度松动对应变化规律。结果表明,随着压紧力的减小,图像纹理变化程度先缓慢增大,当拧紧力矩小于10 ...
司文荣 +7 more
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ABSTRACT Early diagnosis of liver cancer demands high sensitivity, high specificity, convenience and real‐time monitoring capabilities. However, it encounters challenges such as low concentration of markers, numerous interfering factors, and limitations of detection technologies.
Changsheng Shi +10 more
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A terminology (or coding system) is a formal set of controlled vocabulary in a specific domain. With a well‐defined terminology, each concept in the target domain is assigned with a unique code, which can be identified and processed across different medical systems in an unambiguous way.
Yinsheng Zhang +2 more
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ABSTRACT Objective To test the non‐inferiority of extended abdominopelvic ultrasound examination compared with contrast‐enhanced computed tomography (CT) and whole‐body diffusion‐weighted magnetic resonance imaging (WB‐DWI/MRI) in discriminating preoperatively between resectable and non‐resectable disease based on the European Society for Medical ...
D. Fischerova +26 more
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ABSTRACT Objective The corpus callosum (CC) is an interhemispheric structure that facilitates communication between the two cerebral hemispheres. Anomalies of the CC are frequent and associated with a wide spectrum of altered neurodevelopmental outcomes.
R. Corroenne +55 more
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