Results 31 to 40 of about 18,793 (138)
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 6, Page 747-753, December 2025.ABSTRACT Objective Ultrasound‐based fetal growth assessment is an essential part of clinical decision‐making in modern obstetric care. This study aimed to evaluate the impact of maternal and fetal characteristics on the accuracy and precision of sonographic fetal weight estimation.
M. Granfors +4 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2018 超声检查技术以其无创性,操作方便、简单而又适时的特点一直是妇产科疾病检查方法的首选。随着妇产科超声检查在临床工作中的广泛应用以及妇产科超声新诊疗技术的深入开展,不仅对妇产科超声医师有了更高的要求,而且未来的其他系统的超声科医师也需要掌握一定的妇产科超声影像知识。因此,妇产科超声的教学工作显得尤其重要。但是现在超声诊断学本身课时设置就少,理论课上基本涉及不到妇产科相关的超声内容 ...
曹璐, 冷维春, 刘俊宝, 秦瑞
doaj
The study of one-dimensional flow analysis model of the combustor in supersonic combustion experiments [PDF]
, 2003 对公开发表的用于超声速燃烧流场分析的几种一维模型进行了研究，指出了其中存在的问题，研究结果表明：基于实验静压数据的一维模型，若不借助必要的流场测量数据或分析结果，或借助于经验性的处理方法，单靠一维假设，无法获得较为完整的一维流场分析结果。改进后的一维模型降低了数据处理过程中的不确定性，提高了对一般情况的适应能力。用编制的计算程序SSC-2对两组典型的超燃燃烧室壁面静压实验数据进行了演算 ...
俞刚, 张鹏
core
Sexuality, Gender &Policy, Volume 8, Issue 4, November 2025.ABSTRACT For over 30 years, the northern Mexican state of Chihuahua bordering Texas and New Mexico has experienced and witnessed multiple forms of violence across its rural and urban regions. Communities are besieged with cartel and gender‐based violence and the saturation of international corporations that pay less than livable wages for workers in ...
Sylvia Fernández Quintanilla +1 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2010 目的探讨经直肠高频彩色多普勒超声诊断直肠肛管周围脓肿的声像图特点及术前定位的临床应用价值。方法应用7-10 MHz的高频双平面探头,对88例直肠肛周脓肿患者进行经直肠彩色多普勒超声（简称腔内超声）检查,并应用常规腹部3.5 MHz探头在体表肛门周围超声（简称肛周超声）,观察声像图特征,分析对比这两种超声方法对肛周脓肿的诊断、内口判断的准确性。结果本组病人腔内超声与肛周超声对脓肿是否形成及脓肿内口的判定均有显著性差异 ...
辛明志, 刘海丽, 王钟焰
doaj
Meta-analysis study to the application value in predicting premature delivery based on ultrasound measurement of cervical length, fetal fibronectin (fFN) or on the combination of both methods [PDF]
, 2016 目的:通过Meta分析，对持有不同设计方法与病例数的研究结果进行综合比较，然后探讨超声测量宫颈长度、胎儿纤维连接蛋白(fFN)及二者联合应用对于早产诊断的临床价值。 方法:透过ElsevierScience、万方、PubMed、维普、Springer及中国知网等数据库检索2003年5月～2015年11月公开发表的相关文献，依照排除及纳入标准对文献进行严格的过滤筛选。提取纳入文献的四格表与资料特征，对纳入研究应用QUADAS（系统回顾中诊断精确性研究质量评价鉴定工具表）进行质量评估。应用MetaDisc1.
陳鋕沅
core
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
Zhongguo shiyan zhenduanxue, 2018 目的研究产前三级超声检查在先天性心脏病产前筛查中的应用价值。方法回顾性分析2014年1月-2016年1月间在本院接受常规孕检的5013例孕妇的产前三级超声检查资料,将三级超声检查结果分别与产前胎儿心脏超声诊断结果及金标准:分娩后新生儿心脏超声及终止妊娠胎儿尸检结果进行对比,分析三级超声检查与两者的一致性,以金标准为参照采取ROC曲线分析三级超声的诊断价值并计算各项诊断效能指标。结果本组资料中5013例孕妇,胎儿共计5016例,先心病检出率为:三级超声1.97%、产前胎儿心脏超声1.73 ...
孙东艳 +4 more
doaj
Evaluating left atrial function and predicting the efficacy of radiofrequency catheter ablation with persistent atrial fibrillation by speckle tracking imaging [PDF]
, 2015 目的：探讨应用斑点追踪技术（STI）评价持续性房颤患者经导管射频消融（RFCA）术前、术后左心房结构功能变化，并预测房颤患者经导管射频消融术后随访至术后6个月维持窦性心律的可能性。方法：对45例经皮导管射频消融术的持续性房颤患者分别于术前1周、术后24小时、术后3个月、术后6个月和25例对照组（健康志愿者）进行左房结构功能及应变率分析，测量和计算左房前后径指数（LADI）、左房面积指数（LAAI）、左房最大容积指数（LAVImax）、左房射血分数（LAEF）、E/E ...
钟小芳
core
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 5, Page 621-630, November 2025.ABSTRACT Objectives To compare the maternal hemodynamics of Chinese women at low and at high risk for preterm pre‐eclampsia (PE) and assess the differences in hemodynamic parameters between high‐risk women with or without prophylactic aspirin. Methods This was a prospective longitudinal case–control study of 857 Chinese women with a singleton pregnancy
X. Wang +11 more
wiley +1 more source