Results 31 to 40 of about 5,664 (144)

Outcome of monochorionic diamniotic twin pregnancy with selective fetal growth restriction and continuous or intermittent absent or reversed end‐diastolic umbilical artery flow: international multicenter cohort study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 1, Page 41-50, July 2025.
ABSTRACT Objectives Monochorionic diamniotic (MCDA) twins with selective fetal growth restriction (sFGR) and either continuous (cAREDF) or intermittent (iAREDF) absent or reversed end‐diastolic flow in the umbilical artery face significant fetal and neonatal risks.
A. T. R. Noll   +19 more
wiley   +1 more source

Placental biomarker and fetoplacental Doppler abnormalities are strongly associated with placental pathology in pregnancies with small‐for‐gestational‐age fetus: prospective study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 6, Page 749-760, June 2025.
ABSTRACT Objective Placental dysfunction can result in small‐for‐gestational age (SGA) or fetal growth restriction (FGR). The aim of this prospective cohort study was to assess the association of the cerebroplacental ratio (CPR) and other more conventional fetoplacental Doppler indices, circulating placental growth factor (PlGF) levels and soluble fms ...
J. Hong   +6 more
wiley   +1 more source

牙周炎与脑小血管病相关性的初步研究

open access: yesZhongguo shiyan zhenduanxue, 2021
牙周炎是口腔内常见疾病,据统计报道,每年约7.43亿人患有重度牙周炎[1]。长期慢性的牙周炎症会破坏牙周支持组织,形成牙列缺损或牙列缺失。严重的牙周炎导致全身炎症反应,可能使脑小血管发生病理改变从而影响大脑正常功能[2]。脑小血管病是痴呆和脑卒中的主要病因,其患病率随着年龄的增长而增加,对老年人的危害极大[3]。
张继禹   +5 more
doaj  

以情绪障碍为首发症状的CADASIL 1例报道并文献复习

open access: yesZhongguo shiyan zhenduanxue, 2021
伴有皮质下梗死和白质脑病的常染色体显性遗传性脑动脉病(CADASIL)是一种非动脉硬化、非淀粉样的脑小血管病,由NOTCH3基因中的半胱氨酸错义突变引起[1]。常表现为有先兆的偏头痛、反复出现的皮质下梗死、白质脑病和渐进性认知功能障碍,以偏头痛或缺血性脑血管事件为首发症状,现报道1例以情绪障碍为首发症状的CADASIL病例。
王咏纯, 程莹莹, 沈延鑫, 孙莉
doaj  

血脑屏障在缺血性卒中病程中的破坏与保护策略 [PDF]

open access: yes, 2019
血脑屏障(BBB)是以内皮细胞为核心形成的维持中枢神经系统微环境稳态的重要结构。在缺血性卒中的病理条件下,局部的各种炎症反应与细胞自身表型、结构的改变使BBB的完整性遭到破坏、通透性上升,外周血中的各种成分,尤其是激活的炎症细胞/炎症因子可穿过受损的BBB而到达脑实质并损害正常或加重已经受损的神经细胞的功能。本文通过描述BBB各组分的和其他炎症细胞的激活和功能改变来回顾缺血性卒中后BBB的受损机制 ...
陆正齐
core  

MRI Study on the Effects of Platinum-based Chemotherapy on Brain Lateralization in Patients with Lung Cancer [PDF]

open access: yes
This study aimed to investigate the impact of platinum-based chemotherapy on cerebral cortex thickness in patients with lung cancer, focusing on bilateral hemispheres and lateralization characteristics.
Mei YAO   +8 more
core   +1 more source

脑卒中微出血的研究进展

open access: yesZhongguo shiyan zhenduanxue, 2016
脑微出血(cerebral microbleeds,CMBs)是脑内微小血管病变所致的微小出血 ...
孙锋刚, 蒋在军, 刘辉
doaj  

血流动力学与脑部血管周围间隙扩大关系的研究进展 Advance in Relationship between Cerebral Hemodynamics and Enlarged Perivascular Space

open access: yesZhongguo cuzhong zazhi, 2019
脑部血管周围间隙扩大是脑小血管病的影像学标志物之一,其发生发展的机制尚不明确。 现有研究表明血流动力学改变可能引起血管周围间隙扩大的发生发展。本文从血压、血管管壁僵硬 程度、脑血流量等因素对血管周围间隙扩大的影响作一简要综述,为探索血管周围间隙扩大的发病 机制及可能的治疗方法提供帮助。 Abstract: The enlarged perivascular space is one of the neuroimaging markers of cerebral small vessel ...
马琳,王伊龙
doaj   +1 more source

The screening and function study of risk factors and biomarkers for Leukoaraiosis in Chinese-Han population [PDF]

open access: yes, 2016
脑白质疏松症(Leukoaraiosis,LA),也被称作为脑白质损伤(whitematterlesions,WMLs)和脑白质高信号(whitematterhyperintensities,WMHs),是一种广泛存在于老年人群中的神经影像现象。LA虽不表现出具体的临床症状,但也非良性无危害的。它会增加认知功能下降、步态异常和跌倒、抑郁、中风、痴呆和尿失禁,甚至死亡的发生风险。随着人口老龄化速度的加快,LA正成为全球重大的老年医学问题。在西方国家,科学家们发现LA具有较大的遗传力,其中存在大量的易感基因,
黄文清
core  

脑卒中后认知障碍的中枢机制:基于脑电图和磁共振成像的研究进展 [PDF]

open access: yes
大约1/3的脑卒中患者会经历卒中后认知障碍(PSCI),严重影响了患者的生活质量和生存时间。由于PSCI的发病机制复杂且缺乏可靠的客观诊断,临床上主要依靠主观的神经生理学量表进行评估诊断,而脑电图(EEG)及磁共振成像(MRI)具备提供客观指标的优势。本文基于EEG、MRI以及EEG-MRI融合技术,对PSCI患者的脑电波谱、脑结构、脑网络变化等中枢机制的新进展进行综述,旨在探索EEG和MRI对预测及诊断PSCI的临床价值,以期提高对PSCI发病机制的认识 ...
任琼迪, 张铭
core   +1 more source

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