Results 11 to 20 of about 1,578 (96)

Efficiency of lung cancer screening in early diagnosis and treatment program among community residents in Nanshan district, Shenzhen city: a cross-sectional and 2-year follow-up survey [PDF]

open access: yes
ObjectiveTo evaluate the effectiveness of a lung cancer screening program for early diagnosis and treatment of the disease among community residents in Nanshan district, Shenzhen city, Guangdong province, and to provide evidence for optimizing regional ...
Chang MA   +8 more
core   +1 more source

Design, synthesis and preliminary bio-evaluation of progestrone receptor targeting probes for breast cancer imaging with PET [PDF]

open access: yes, 2016
乳腺癌是严重威胁女性健康的疾病,它的早期诊断能够有效的降低病人的死亡率。孕激素受体属于核受体超家族,有PRA和PRB两种亚型,在调节和控制卵巢,子宫和乳腺的功能方面有重要作用。研究表明,在雌激素受体阳性(ER+)的乳腺癌病人中,PR的表达与否不会对病人接受他莫西芬治疗的疗效产生影响。但是在雌激素受体表达阴性(ER-)的乳腺癌病人中,病人接受他莫西芬治疗的疗效依赖于PR的表达。因此,监测PR的表达对乳腺癌的早期诊断和ER-/PR+病人的治疗都是很重要的。PET的灵敏度高,空间分辨率好,安全性也较好 ...
吴晓伟
core  

Design of RF Transmit and Receive Coils for Low Field MRI [PDF]

open access: yes, 2016
在临床医学应用中磁共振成像技术已经很普及,它成为现代医学影像领域中重要的医学影像检查手段。射频线圈在磁共振系统用来发射和接收射频信号的重要器件,对成像质量有着很关键的作用。水平场系统低场磁共振成像设备的射频线圈结构和高场磁共振设备中使用的射频线圈由于主磁场方向的不同存在着很大的差异。垂直场下射频发射线圈的设计难度相对比较大,相控阵线圈能够获得较大成像区域的同时也具有较高的信噪比,而且相控阵线圈还能够应用于并行成像技术,加快成像速度。国内对低场磁共振开放式射频发射线圈和相控阵线圈技术的研究都比较少 ...
温桢荣
core  

心脏植入式电子装置相关三尖瓣反流的研究新进展

open access: yes浙江大学学报. 医学版
心脏植入式电子装置(CIED)相关三尖瓣反流是继发性三尖瓣反流的重要组成部分,其病因较为复杂,受到起搏导线介导的三尖瓣反流和CIED存在带来的不可控因素影响。CIED相关三尖瓣反流的发病机制包括起搏导线对三尖瓣复合体的机械性损伤或干扰、起搏模式对三尖瓣反流的影响以及永久性心房颤动、心尖起搏、右心室高比例起搏等临床危险因素。CIED相关三尖瓣反流的自然病程发展和预后与其他病因导致的三尖瓣反流类似。超声心动图、心脏计算机断层扫描和心脏磁共振成像等影像学检查可对CIED相关三尖瓣反流进行精确诊断 ...
俞 丹青   +4 more
doaj   +1 more source

腹水良恶性细胞核仁组成区定量研究 [PDF]

open access: yes, 1995
使用胶质银染色技术,对28例良性腹水和26例恶性腹水进行核仁组成区(AgNORs)形态定量研究。结果表明:良性腹水间皮细胞与恶性腹水癌细胞二者在AgNORs数目、形态、大小及核内分布方面均存在显著差异。另外,对5例临床上疑诊恶性腹水而常规脱落细胞学(HE)染色阴性或未肯定者进行上述定量分析,确定腹水良恶性质,结果与组织病理学诊断相一致 ...

core  

The nuclear receptor Nur77 could improve the lipid accumulation in Non-Alcoholic Fatty Liver Disease (NAFLD) in cooperation with SREBP-1c [PDF]

open access: yes, 2017
非酒精性脂肪肝是一直困扰我国和全世界人口的慢性疾病,发病率在20%左右,也就是说每5个中国人,就有一个是非酒精性脂肪肝的携带者。而FDA推荐的《非酒精性脂肪肝病诊疗指南》中,并没有明确有效的预防和治疗非酒精性脂肪肝的药物。所以,明确肝脏细胞脂质代谢的调控机制,筛选出可以改善脂质堆积的药物是迫在眉睫的。本课题通过80份病例的分析,试图寻找到能够调控脂质代谢中关键的转录因子SREBP-1c的蛋白。我们使用组织免疫的方法来检测患者肝脏穿刺样品中的Nur77表达量。结果发现 ...
王培钰
core  

Hybrid Multi-Scale Medical Image Fusion Based on Structural Similarity Optimization [PDF]

open access: yes
Existing multi-modal medical image fusion methods suffer from incomplete preservation of structural information and phase features. Therefore, this study proposes a medical image fusion method based on hybrid multi-scale decomposition and local structure
Yunhang LI, Qing PAN, Nili TIAN
core   +1 more source

Investigate brain network topological property changes in the early stage of mild traumatic brain injury, a study based on MRI [PDF]

open access: yes, 2017
目的:基于弥散张量成像技术(diffusiontensorimaging,DTI)和血氧水平依赖磁共振成像技术(bloodoxygenleveldependentmagneticresonanceimaging,BOLD-fMRI)探讨轻型脑创伤患者急性期(mildtraumaticbraininjury,mTBI)脑结构网络和功能网络拓扑结构属性的变化特征。 材料和方法:前瞻性病例对照研究,通过厦门大学医学院伦理委员会批准,2014年11月开始,2015年8月结束,在厦门大学附属东南医院完成 ...
曾思
core  

Morphological Characteristics of Intracranial Aneurysms and Applicability of CT Angiography in Risk Assessment of Rupture [PDF]

open access: yes
Objective: To explore the application value and morphological characteristics of CT angiography (CTA) in the risk assessment of intracranial aneurysm rupture.
Qian WANG, Shikui SHI
core   +1 more source

Detection Performance of 99mTc in Albira SI Small-Animal SPECT-CT [PDF]

open access: yes
Small-animal single-photon emission computed tomography-X-ray computed tomography (SPECT-CT) is an advanced imaging tool for preclinical research of single-photon radiopharmaceuticals.
Bo ZHANG   +7 more
core   +1 more source

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