Results 31 to 40 of about 390,726 (167)
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 5, Page 582-588, November 2025.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
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 2, Page 200-209, August 2025.Abstract Objectives Neonates with critical congenital heart disease (CCHD) are at risk for adverse early brain development and long‐term neurodevelopmental sequelae. Insulin‐like growth factor‐1 (IGF‐1) and insulin‐like growth factor binding protein‐3 (IGFBP‐3) are essential contributors to brain growth and maturation.
M. Nijman +33 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 64, Issue 5, Page 661-668, November 2024.ABSTRACT Objective To determine the diagnostic accuracy of virtual autopsy using whole‐body postmortem ultra‐high field magnetic resonance imaging (MRI) at 7 Tesla (T), using a short T2‐weighted imaging (T2‐WI) protocol, compared with classical autopsy, for detecting structural abnormalities in small second‐trimester fetuses. Methods Thirty consecutive
A. Staicu +11 more
wiley +1 more source
Fetal and neonatal neuroimaging in twin–twin transfusion syndrome
Ultrasound in Obstetrics &Gynecology, Volume 63, Issue 6, Page 746-757, June 2024.ABSTRACT Objectives To describe the types of brain injury and subsequent neurodevelopmental outcome in fetuses and neonates from pregnancies with twin–twin transfusion syndrome (TTTS). Additionally, to determine risk factors for brain injury and to review the use of neuroimaging modalities in these cases.
M. S. Spruijt +8 more
wiley +1 more source
Gaoya dianqi, 2018 气体绝缘金属封闭开关设备（GIS）在运行中因电磁力导致的异常机械振动时有发生。为研究三相共体水平GIS母线外壳的受力与振动特性,使用有限元分析软件,建立三相工频电流源激励下的水平GIS母线模型,进行稳态电磁场分析,得到外壳所受电磁力,再建立金属外壳的结构动力学模型,求解电磁力激励下的外壳振动加速度响应。结果表明,金属外壳受到周期性变化的电磁力作用,频率为激励源频率的两倍。在该电磁力的作用下,外壳产生机械振动,外壳两侧中线节点的振动加速度显著大于其他位置,其变化频率与电动力频率一致 ...
齐卫东 +7 more
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磁共振动态增强扫描（DCE-MRI）检测易损性动脉粥样硬化斑块应用价值实验研究
Zhongguo shiyan zhenduanxue, 2010 目的通过动物实验探讨磁共振动态增强扫描成像（Dynamic Contrast Enhanced MRI DCE-MRI）检测易损性动脉粥样硬化斑块临床应用价值。方法测定磁共振动态增强扫描动脉粥样硬化斑块首过时相斜率S及斑块峰值信号强度强化后120s信号强度下降率Soutflow,使用免疫组化方法标记动脉粥样硬化斑块内新生微血管内皮细胞与巨噬细胞。分析磁共振动态增强扫描参数与新生微血管内皮细胞计数（CD31免疫组化表达）和巨噬细胞计数（CD68免疫组化表达）相关性 ...
曲晓峰 +4 more
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Zhongguo shiyan zhenduanxue, 2020 在2018年的全球肿瘤流行病统计数据（GLOBOCAN）报告中,乳腺癌的发病率位居女性恶性肿瘤的首位[1]。1991年开始,核磁共振成像（MRI）被认可作为乳腺癌的辅助诊断手段[2]。以往,MRI平扫及增强扫描对乳腺癌显示出了诊断的高敏感性[3-7]。近年来,动态增强核磁共振扫描（DCE-MRI）和弥散加权成像（DWI ...
王睿, 王志佳, 刘斌
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Separation of Sanggenon C from SANG-BAI-PI(从桑白皮中提取药物成分桑根酮C)
Zhejiang Daxue xuebao. Lixue ban, 2001 开发了从中药桑白皮中分离和精制桑根酮C的工艺路线.用紫外光谱、红外光谱、质谱以及核磁共振谱（13C-NMR与1H-NMR）进行结构鉴定，证实其为桑根酮C（Sanggenon C）.
LUXiang-hong(陆向红) +3 more
doaj +1 more source
, 2001 本装置涉及一种用于核磁共振检测样品管，其结构由样品管、玻璃塞子及真空阀三部分组成，其中样品管一端为喇叭口，上有小孔，中心为玻璃塞子，另一为真空阀，前端为椎形尖，恰好插入样品管的喇叭口内，上面的小孔相对，可完成对各种对氙吸附核磁共振样品的检测。优点：结构简单，制作容易，成本低，使得用Xe吸附方法对固体材料的检测实验周期大为缩短，从而节省大量的检测费用 ...
包信和, 刘宪春, 张维萍
core
Zhongguo shiyan zhenduanxue, 2016 目的探讨新生儿胆红素脑病常规磁共振特征及磁共振波谱成像特征。方法选择2014年1月至12月间35例新生儿胆红素脑病患儿为观察组,同时段健康新生儿35例为对照组,均接受磁共振平扫及波谱成像,测量和比较两组苍白球T1WI、T2WI信号强度、ADC值及磁共振波谱参数N-乙酞基天门冬氨酸/肌酸复合物（NAA/Cr）、胆碱复合物/肌酸复合物（Cho/Cr）、乳酸/肌酸复合物（Lac/Cr）、谷氨酰胺复合物/肌酸复合物（Glx/Cr）和肌醇/肌酸复合物（mI/Cr）。结果对照组脑实质形态及信号未见异常 ...
黄松 +4 more
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