Results 11 to 20 of about 7,695 (169)

Endometrial assessment in abnormal uterine bleeding: transvaginal ultrasound alone may not be good enough

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 79-88, January 2026.
ABSTRACT Objective To evaluate the proportion of optimal assessments of endometrial thickness (ET) achieved by transvaginal ultrasound (TVS) compared with a multimodal (MM) sonographic approach in women with abnormal uterine bleeding (AUB). Methods This prospective observational study was a subset of the EPI‐SURE study conducted between June and ...
S. Nijjar   +5 more
wiley   +1 more source

Performance of non‐invasive prenatal testing in vanishing‐twin and multiple pregnancies: results of TRIDENT‐2 study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 6, Page 738-746, December 2025.
ABSTRACT Objective To evaluate the performance of non‐invasive prenatal testing (NIPT) in vanishing‐twin and multiple pregnancies. Methods This study was conducted as part of the TRIDENT‐2 study, in which NIPT was offered as a first‐tier screening test to women with a multiple pregnancy or vanishing‐twin pregnancy between 1 June 2020 and 31 March 2023 ...
J. C. A. van Eekhout   +86 more
wiley   +1 more source

Impact of fetal and maternal characteristics on the accuracy and precision of sonographic fetal weight estimation: population‐based study

open access: yesUltrasound 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

Prenatal evaluation, diagnosis and management of fetal corpus callosal abnormalities: international Delphi consensus

open access: yesUltrasound 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

Effect of aspirin on maternal hemodynamics in Chinese women at high risk for preterm pre‐eclampsia: longitudinal study

open access: yesUltrasound 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

Impact of race‐based customization on detection of fetal growth restriction

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 4, Page 480-485, October 2025.
ABSTRACT Objective Fetal growth standards determine which fetuses are diagnosed with fetal growth restriction (FGR) and become candidates for enhanced fetal monitoring. Given the existence of race‐based differences in fetal and neonatal weights, we sought to determine the impact of race‐based customization of fetal growth curves on the antenatal ...
P. Ramesh, L. Lemon, J. C. Larkin
wiley   +1 more source

Cord blood levels of insulin‐like growth factor‐1 and insulin‐like growth factor binding protein‐3 correlate with perinatal brain development in fetal congenital heart disease

open access: yesUltrasound 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

超声检查联合CA125、OPN检测在卵巢癌诊断中的应用

open access: yesZhongguo shiyan zhenduanxue, 2020
目的探讨超声检查联合糖类抗原125(CA125)、骨桥蛋白(OPN)检测在卵巢癌诊断中的应用价值。方法选取2017年1月至2018年3月在我院治疗的卵巢肿瘤患者89例,其中良性肿瘤51例,恶性肿瘤38例,均采用彩色超声检查,同时检测血清CA125和OPN水平。结果超声检查诊断卵巢癌灵敏度、特异度、阳性预测值和阴性预测值分别为76.32%、92.16%、87.88%和83.93%;恶性肿瘤患者血清CA125和OPN分别为143.92(34.38,210.29)U/ml和167.28(41.29,200 ...
季春艳, 曾艳, 程瑶瑶, 窦礼敏
doaj  

Investigation of Piezoelectric Ultrasonic Technology Based on MEMS [PDF]

open access: yes, 2009
本文主要研究基于MEMS的压电超声技术,包括超声检测、超声微流体驱动技术和ZnO压电薄膜材料及器件的研究,研究课题属于当前微机电系统中较为前沿和创新的学科领域,如下所述: 1、超声共振谱技术(ResonantUltrasoundSpectrum,简称RUS)是上个世纪九十年代发展起来的一种表征材料特性的方法,该方法成为现代超声检测的较为常用的技术手段,其测量的范围广泛,在MEMS领域内,可用于微型器件的检测。在RUS测量过程中,试件样品通常被夹在两片压电换能器之间 ...
孙宏明
core  

超声法在支柱瓷绝缘子探伤中的应用

open access: yesDianci bileiqi, 2007
支柱瓷绝缘子存在的缺陷严重威胁电网的安全运行。介绍了采用超声法对支柱绝缘子进行探伤的基本原理,探伤方法主要有纵波斜角超声波检测和爬波超声波检测两种,纵波斜角超声波检测速度较慢,但可检测瓷件的中心部位;爬波超声波检测速度较快,探测表面下1~15mm的裂纹非常敏感。列举了采用爬波方法在现场检测的实例,建议:在停电时间允许的情况下,应结合爬波和纵波两种方法对支柱绝缘子内部的缺陷进行全面检测。检测时,根据瓷瓶的大小,选择合适尺寸的探头。同时还应根据被检瓷件的材料(高强瓷或普通瓷),选择同类别的试块和探头。
王勇, 印华, 王谦, 吴高林
doaj  

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