Results 31 to 40 of about 256,336 (146)
Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 1, Page 85-93, January 2025.ABSTRACT Objective Accurate differentiation between placenta accreta spectrum (PAS) and uterine‐scar dehiscence with underlying non‐adherent placenta is often challenging, even for PAS experts, both prenatally and intraoperatively. We investigated the use of standardized two‐dimensional grayscale ultrasound and Doppler imaging markers in ...
T. Adu‐Bredu +3 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 64, Issue 1, Page 36-43, July 2024.ABSTRACT Objective Although remarkable strides have been made in fetal medicine and the prenatal diagnosis of congenital heart disease, around 60% of newborns with isolated coarctation of the aorta (CoA) are not identified prior to birth. The prenatal detection of CoA has been shown to have a notable impact on survival rates of affected infants.
C. A. Taksøe‐Vester +8 more
wiley +1 more source
Performance of machine‐learning approach for prediction of pre‐eclampsia in a middle‐income country
Ultrasound in Obstetrics &Gynecology, Volume 63, Issue 3, Page 350-357, March 2024.ABSTRACT Objective Pre‐eclampsia (PE) is a serious complication of pregnancy associated with maternal and fetal morbidity and mortality. As current prediction models have limitations and may not be applicable in resource‐limited settings, we aimed to develop a machine‐learning (ML) algorithm that offers a potential solution for developing accurate and ...
J. Torres‐Torres +10 more
wiley +1 more source
, 2013 依据曲线梁弹性理论,对一端自由和一端固支的曲线梁进行了面内和面外自由振动分析。依据曲线梁两端的边界条件,对振动方程进行了求解。给出了不同开口条件下,曲线梁面外振动特征计算结果。进而 ...
张良, 曾晓辉
core +2 more sources
Zhongshan Daxue xuebao. Yixue kexue ban, 2021 目的探讨淋巴结比率（LNR）与早期宫颈癌患者临床病理特征和预后的关系。方法回顾性分析我院2001年6月1日至2012年9月30日期间137例淋巴结阳性的Ⅰ期和ⅡA期行根治性子宫切除术伴或不伴双侧输卵管卵巢切除术和盆腔±腹主动脉旁淋巴结清扫术的宫颈癌患者的病历资料，根据病理检测阳性淋巴结数目和术中切除淋巴结总数比，计算出LNR。绘制受试者工作特征曲线（ROC），根据ROC曲线截断值将患者分为两组，并对预后的准确性进行评估。结果ROC曲线下面积为0.65，最佳Cut-off值为0 ...
陈林, 程安然, 陈锐, 熊樱
doaj
, 1980 本文以“无逆压特性曲线”的形式,表示了圆弧型喉部二维跨超音速喷管流动无逆压时各参数间的相互定量关系,为喉部大曲率、快膨胀、无逆压的激光喷管提供了设计指南,配合本文的五参数可调跨超音速喷管型线联合计算程序,可进行这类喷管的计算机选型.在判断其他方法得到的该类喷管喉部流动逆压特性时 ...
盛家宁
core +2 more sources
同型半胱氨酸、胱抑素C联合超敏C反应蛋白在早期糖尿病肾病诊断中的诊断价值
Zhongguo shiyan zhenduanxue, 2019 目的探讨血清同型半胱氨酸(homocysteine,Hcy)、胱抑素C(cystatin C,CysC)和超敏C反应蛋白(highsensitivity C-reactive protein,hsCRP)联合检测在早期糖尿病肾病(diabetic nephropathy,DN)诊断中的价值。方法选取2017年4月到2017年8月本院糖尿病科87例2型糖尿病(diabetes mellitus,DM)患者,根据尿白蛋白/肌酐比(urinary albumin creatinine ratio,UACR ...
王洪飞 +4 more
doaj
, 2010 《圆锥曲线》一书的底本是美国数学家路密司撰Elements of Geometry and Conic Sections(1861年)中的圆锥曲线部分,译者是求德生和刘维师。目前所见《圆锥曲线 ...
赵振江
core
Zhongguo shiyan zhenduanxue, 2007 目的探讨心肌型脂肪酸结合蛋白（H-FABP）在急性心肌梗死（AMI）早期区分AMI患者与正常人的能力。方法人为纳入正常人、AMI确诊病人比例2:1的小样本人群,采用双抗体夹心ELISA法对40例正常人与19例AMI患者血清H-FABP浓度进行定量,绘制H-FABP在该人群中用于诊断AMI的受试者特征曲线（ROC曲线）并比较曲线下面积（AUC）与0.5的大小。0.5被认为是确定一项指标是否具有任何诊断意义的AUC临界值。结果H-FABP浓度定量正常人组为1.29±0.64 ng/mL AMI组为24.45±
张鹏, 王前, 郑磊, 曾方银
doaj
Zhongguo shiyan zhenduanxue, 2015 目的研究先兆子痫患者β痕迹蛋白(β-TP),胱抑素C(Cys C)和肌酐(Cre)的血清含量,运用ROC曲线评价这些指标的诊断性能。方法采用1∶2病例对照的研究方法,选取2011年5月-2014年12月间西安市中心医院68例先兆子痫患者和136例正常健康孕妇对照组检测相关指标,结果使用SPSS10.0和MedCalc 11.4统计软件进行分析,用ROC曲线确定其最佳临界值和诊断指标。结果先兆子痫患者β-TP,Cys C和Cre最佳临界值分别为0.67mg/L,1.18mg/L,56mol/L ...
张志明, 孙海英, 王琰
doaj