Results 81 to 90 of about 8,117 (155)
Dianci bileiqi冰雪气象条件给视频图像监测带来系列问题，为了对风雪图像进行评价和筛选，建立了考虑雪花噪声干扰的Narasimhan模型，采用图像纹理、能量分布以及同质性的彩色图像相似指数评价体系（CISI），对典型风雪环境图像进行了评估。结果显示，(1)CISI值小于0.6，图像纹理特征较为模糊，图像有效性较差；（2）雪花图像质量由雪花噪声和观测距离决定，其中与雪花噪声成负线性关系，与观测距离成负指数关系。相关的分析方法为冰雪环境区域绝缘子视频检测图像评价提供了指导。
寇汉鹏 +4 more
doaj +2 more sources
Zhongshan Daxue xuebao. Yixue kexue ban, 2008 : 【目的】 探讨在3T磁共振扫描仪条件下采用体外线圈行前列腺波谱检查的应用价值65377;【方法】 在3T磁共振条件下,仅采用体外线圈对29例正常男性志愿者进行多体素三维质子磁共振波谱分析(1HMRS),志愿者分为3组:青年组(≤40岁,11例),中年组(41岁 ～ 60岁,9例),老年组(>60岁,9例)计算每个体素的(胆碱+肌酸)/枸橼酸盐比值,并分析各个年龄组前列腺基底部65380;中部65380;尖部内腺及外周带的1HMRS特点65377;【结果】 ①所有志愿者均顺利完成前列腺MRS检查 ...
doaj
Exploration of the relationship between nicotinamide metabolism-related genes and osteoarthritis [PDF]
Objective·To explore the relationship between osteoarthritis and nicotinamide metabolism-related genes using bioinformatics analysis, and identify key genes with diagnostic value and therapeutic potential.Methods·By using "Osteoarthritis" as a search ...
DENG Qingsong +2 more
core +1 more source
基于PET-CT和超声造影构建甲状腺癌术后复发转移的预测模型
Zhongguo shiyan zhenduanxue目的 基于正电子发射计算机断层显像(PET-CT)和超声造影参数构建甲状腺癌(TC)患者术后复发转移的预测模型，为甲状腺癌的治疗提供依据。方法 回顾性选取保定市第一中心医院2018年1月—2021年3月收治的行手术治疗的116例TC患者，患者术前均进行PET-CT和超声造影检查，并收集患者临床相关资料。术后对患者进行为期3年的随访，根据随访期间是否发生复发转移将其分为发生组(32例)和未发生组(84例)。患者术后复发转移的影响因素分析采用多因素逐步Logistic回归模型；并基于PET ...
郭星 +6 more
doaj
Zhongguo cuzhong zazhi目的 分析影响脑小血管病患者发生认知障碍的因素。 方法 回顾性选取（系统抽样）沧州市中心医院2020年1月—2022年5月收治的脑小血管病患者作为建模组，根据是否发生认知障碍分为无认知障碍组和认知障碍组。多因素logistic回归模型分析脑小血管病患者发生认知障碍的因素，于R3.6.3中构建预测脑小血管病认知障碍的列线图模型。另以建模组∶验证组=7∶3的方案收集2022年5月—2023年5月收治的脑小血管病患者为验证组，对构建的模型进行外部验证 ...
代杰，张素响，赵沙沙，张晓凤 (DAI Jie, ZHANG Suxiang, ZHAO Shasha, ZHANG Xiaofeng )
doaj +1 more source
[Establishment of a nomogram model for the early diagnosis of childhood sepsis]. [PDF]
Zhongguo Dang Dai Er Ke Za Zhi, 2022 Teng QL, Ju M, Liu ZY, He XC.
europepmc +1 more source
ATP负荷MR心肌灌注成像对冠心病心肌缺血诊断的临床应用研究
Zhongguo shiyan zhenduanxue, 2008 目的研究ATP负荷MR心肌灌注成像对冠心病心肌缺血诊断的临床应用价值。方法将临床通过DSA冠脉造影诊断为冠心病患者30例,无症状健康志愿者5例,进行ATP负荷MR心肌灌注成像,ATP负荷MR心肌灌注成像应用真正快速稳态梯度回波序列（fast imaging employ steady state quisition,FIESTA）用于观察心肌的运动,快速梯度回波序列（fastcard gradient echotrain,FGRE ET）用于心肌灌注首过时相MRI图像采集。反转恢复梯度回波序列（my ...
曲晓峰 +4 more
doaj
Value of machine learning model based on MRI radiomics in predicting histological grade of cervical squamous cell carcinoma [PDF]
Objective To explore the predictive value of different machine learning models based on MRI radiomics combined with clinical features for histological grade of cervical squamous cell carcinoma. Methods Clinical data of 150 patients with cervical squamous
Wang Hezhen, Bian Fang, Tong Yujie, Duan Yanan, Zhai Dongzhi
core +1 more source
Construction of a nomogram model for predicting infectious intrapartum fever. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2023 Lu B +5 more
europepmc +1 more source
Risk factor analysis of type 2 diabetes mellitus in rural areas: A systematic review [PDF]
Background: Type 2 diabetes mellitus (DM) prevalence continues to increase in rural areas, which is of particular concern due to limited access to health services in these areas. Purpose: To identify various risk factors for the incidence of type 2 DM in
Najmah, Najmah +2 more
core +2 more sources