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自动化ASPECTS评估急性缺血性脑卒中的人机对比研究
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作者 许萍 程晓青 +6 位作者 周长圣 田冰 田霞 石峰 曹泽红 高敏 邢伟 《医学研究与战创伤救治》 北大核心 2025年第4期370-375,共6页
目的探讨自动化Alberta卒中项目早期CT评分(ASPECTS)与专家评分的相关性、一致性,并比较两者预测良好临床预后的效能。方法回顾性分析2015年5月至2022年1月在苏州大学附属第三医院、东部战区总医院、上海长海医院绿色卒中通道的急性缺... 目的探讨自动化Alberta卒中项目早期CT评分(ASPECTS)与专家评分的相关性、一致性,并比较两者预测良好临床预后的效能。方法回顾性分析2015年5月至2022年1月在苏州大学附属第三医院、东部战区总医院、上海长海医院绿色卒中通道的急性缺血性脑卒中患者的临床资料。收集所有患者的入院平扫CT图像以及临床资料,自动化ASPECTS软件与神经放射学专家对平扫CT图像进行回顾性ASPECTS评估。Spearman分析自动化ASPECTS与专家评分的相关性,组内相关系数(ICC)用于评估一致性,受试者工作特性(ROC)曲线和DeLong检验评估和比较两者预测良好临床预后的效能。结果自动化ASPECTS与专家评分呈显著正相关(r=0.459,P<0.05),两者一致性较好(ICC=0.620)。自动化ASPECTS预测良好临床预后特异度高于专家(62.1%vs 41.1%),但灵敏度略低于专家(57.6%vs 73.7%),ROC曲线下面积均为0.605,DeLong检验两者差异无统计学意义(P=0.984)。结论自动化ASPECTS与专家评分呈显著正相关,两者间一致性好。在预测良好临床预后方面,两者评估效能相当。 展开更多
关键词 自动化Alberta卒中项目早期CT评分 急性缺血性脑卒中 计算机体层成像
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急性基底动脉闭塞性卒中PC-ASPECTS评分与PMT评分的一致性比较
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作者 柯烨 何野 +1 位作者 石冉 王朋 《安徽医专学报》 2025年第1期28-31,共4页
目的:评估急性基底动脉闭塞性卒中患者基于头颅磁共振(MRI)的后循环阿尔伯塔卒中计划早期计算机断层扫描评分(PC-ASPECTS)及脑桥中脑-丘脑评分(PMT)等影像学评分的一致性。方法:前瞻性纳入32例急性基底动脉闭塞性卒中患者。由12名临床... 目的:评估急性基底动脉闭塞性卒中患者基于头颅磁共振(MRI)的后循环阿尔伯塔卒中计划早期计算机断层扫描评分(PC-ASPECTS)及脑桥中脑-丘脑评分(PMT)等影像学评分的一致性。方法:前瞻性纳入32例急性基底动脉闭塞性卒中患者。由12名临床医师对MRI进行评分,评分数据用于最后的一致性分析,即总体一致性及二分法后的一致性。结果:二分法前,基于MRI的PC-ASPECTS评分与PMT评分的总体组间一致性均达到了良好的水平(κ=0.791[95%CI,0.732-0.843];κ=0.684[95%CI,0.603-0.724])。在二分法后,PC-ASPECTS评分总体医师的组间一致性达到了优秀的水平(κ=0.824[95%CI,0.738-0.912]);而PMT评分的总体医师的组间一致性仍然处于良好的水平(κ=0.769[95%CI,0.693-0.859])。结论:相比于PMT评分,临床医生在评估基于MRI的PCASPECTS评分时,在给予一定的容差范畴的情况下,其一致性的值更高,足以支持可重复的临床决策和评估。 展开更多
关键词 脑卒中 一致性 PC-aspects评分 PMT评分
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Correlation between prognostic markers and clinical parameters in hepatocellular carcinoma:Pathophysiological aspects to therapeutic targets
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作者 Saira Rafaqat Iqra Noshair +3 位作者 Momina Shahid Sadaf Bibi Ramsha Hafeez Hafsa Hamid 《World Journal of Gastrointestinal Oncology》 2025年第5期9-26,共18页
One of the main causes of cancer-related morbidity and mortality globally is hepatocellular carcinoma(HCC).At every stage of the disease,HCC may now be treated using a variety of therapy techniques.Nevertheless,despit... One of the main causes of cancer-related morbidity and mortality globally is hepatocellular carcinoma(HCC).At every stage of the disease,HCC may now be treated using a variety of therapy techniques.Nevertheless,despite the abundance of effective therapeutic choices,the prognosis for patients with HCC is still typically dismal.Prognostic indicators are crucial when assessing prognosis and tracking tumor metastases or recurrence.There are many prognostic markers in HCC.We mainly focused on newly reported prognostic markers such as MEX3A,apolipoprotein B,alpha-fetoprotein,circulating tumor cells,SAMD13,Agrin,and Glypican-3 in the pathogenesis of HCC.Further,we highlighted how these prognostic markers correlated to clinical parameters such as tumor node metastasis,tumor diameter,differentiation,hepatocirrhosis,vascular invasion,and others in HCC.Therefore,identifying specific prognostic biomarkers of HCC helps to provide a great opportunity to improve the prognosis in patients with HCC and provide therapeutic targets. 展开更多
关键词 Hepatocellular carcinoma Clinical parameters Prognostic markers Pathophysiological aspects Therapeutic targets
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High voltage cathode materials for rechargeable magnesium batteries:Structural aspects and electrochemical perspectives
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作者 Dedy Setiawan Jiwon Hwang +1 位作者 Munseok S.Chae Seung-Tae Hong 《Journal of Magnesium and Alloys》 2025年第9期4167-4188,共22页
Rechargeable magnesium batteries(RMBs)are a cutting-edge energy storage solution,with several advantages over the state-of-art lithiumion batteries(LIBs).The use of magnesium(Mg)metal as an anode material provides a m... Rechargeable magnesium batteries(RMBs)are a cutting-edge energy storage solution,with several advantages over the state-of-art lithiumion batteries(LIBs).The use of magnesium(Mg)metal as an anode material provides a much higher gravimetric capacity compared to graphite,which is currently used as the anode material in LIBs.Despite the significant advances in electrolyte,the development of cathode material is limited to materials that operate at low average discharge voltage(<1.0 V vs.Mg/Mg^(2+)),and developing high voltage cathodes remains challenging.Only a few materials have been shown to intercalate Mg^(2+)ions reversibly at high voltage.This review focuses on the structural aspects of cathode material that can operate at high voltage,including the Mg^(2+)intercalation mechanism in relation to its electrochemical properties.The materials are categorized into transition metal oxides and polyanions and subcategorized by the intrinsic Mg^(2+)diffusion path.This review also provides insights into the future development of each material,aiming to stimulate and guide researchers working in this field towards further advancements in high voltage cathodes. 展开更多
关键词 gravimetric capacity cathode material energy storage high voltage cathode materials anode material structural aspects lithiumion batteries libs rechargeable magnesium batteries
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DWI-ASPECTS评估急性脑梗死静脉溶栓治疗预后价值 被引量:13
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作者 姜亮 陈慧铀 +5 位作者 殷信道 毛存南 石国美 王丽萍 周俊山 张颖冬 《临床放射学杂志》 CSCD 北大核心 2016年第3期328-332,共5页
目的 探讨基于扩散加权成像(DWI)的Alberta卒中项目早期CT评分(DWI-ASPECTS)对急性前循环脑梗死静脉溶栓治疗远期预后的预测价值。方法 将99例接受静脉溶栓治疗的急性前循环脑梗死患者纳入研究对象进行前瞻性研究。搜集患者入院的... 目的 探讨基于扩散加权成像(DWI)的Alberta卒中项目早期CT评分(DWI-ASPECTS)对急性前循环脑梗死静脉溶栓治疗远期预后的预测价值。方法 将99例接受静脉溶栓治疗的急性前循环脑梗死患者纳入研究对象进行前瞻性研究。搜集患者入院的一般临床资料、DWI-ASPECTS评分、3个月后改良Rankin量表(mRS)和欧洲五维健康量表(EQ-5D)评分。根据患者3个月后改良Rankin量表(mRS)分为良好转归组(0~2分)和不良转归组(3~6分)。比较2组患者间临床和影像学指标差异,应用Logistic回归分析上述有统计学意义的变量并进行受试者工作特征曲线(ROC)分析。最后将有独立预测因素的变量与EQ-5D进行The Spearman相关检验。结果 本组研究共99例患者,良好转归组68例,不良转归组31例。与不良转归组比较,良好转归组患者年龄更年轻(61.51vs 68.69;P=0.001),入院至MRI检查时间更长(13.4 vs 10.16;P=0.000),入院时NIHSS分值更低(7.31 vs13.10;P=0.000),DWI-ASPECTS分值更高(7.72 vs 3.94;P=0.000),均有显著性差异(P〈0.05)。Logistic回归分析显示年龄(OR 1.083,95%CI 1.013~1.158,P=0.020)、入院时NIHSS分值(OR 1.296,95%CI 1.106~1.520,P=0.001)、DWI-ASPECTS分值(OR 0.697,95%CI 0.553~0.879,P=0.002)均是不良转归发生的独立预测因素。经ROC曲线进一步分析显示DWI-ASPECTS分值曲线下面积为0.878(95%CI 0.784~0.971),DWI-ASPECTS分值预测不良转归的最佳临界点为6.50,敏感度为77.8%,特异度为81.3%。Spearman相关检验示DWI-ASPECTS评分与EQ-5D效应值、EQ视觉模拟量表(EQ-VAS)均呈正相关(r=0.65、r=0.60,P〈0.01)。结论 DWI-ASPECTS评分是评估急性脑梗死患者溶栓治疗预后转归的一种重要标志物。 展开更多
关键词 脑梗死 预后 磁共振扩散成像 aspects评分
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CT灌注成像ASPECTS在急性缺血性脑卒中溶栓再通中的应用 被引量:19
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作者 柯伟 邓小容 +4 位作者 李文澜 卢祖能 杜敏 杨昊 刘永明 《中国老年学杂志》 CAS 北大核心 2018年第12期2829-2832,共4页
目的研究CT灌注成像(CTP)、Albertu脑卒中项目早期CT评分(ASPECTS)在检测可逆性脑组织缺血方面的作用。方法回顾62例患者临床和影像学资料,这些患者均因急性缺血性脑卒中(持续时间<3 h)接受了静脉溶栓治疗,脑卒中患者最初影像学评估... 目的研究CT灌注成像(CTP)、Albertu脑卒中项目早期CT评分(ASPECTS)在检测可逆性脑组织缺血方面的作用。方法回顾62例患者临床和影像学资料,这些患者均因急性缺血性脑卒中(持续时间<3 h)接受了静脉溶栓治疗,脑卒中患者最初影像学评估包括非对比增强CT(NCCT),CT血管造影(CTA)和CTP。结果共25例患者存在CTP ASPECTS不匹配。CTP ASPECTS不匹配亚组最终脑梗死体积分别与NCCT 0 h-ASPECTS,平均间隔时间(MTT)-ASPECTS,脑血容量(CBV)-ASPECTS,NCCT 24 h-ASPECTS均呈负相关,ΔmRS分别与NCCT 0 h-ASPECTS,MTT-ASPECTS,CBV-ASPECTS,NCCT 24 h-ASPECTS间均呈负相关。与所有患者组或所有前循环事件的患者亚组相比,在CTP ASPECTS不匹配亚组,ASPECTS和临床结果之间的相关性较高。MTT-ASPECTS和CBV-ASPECTS分数与临床结果之间的相关性比NCCT 0 h-ASPECTS(即入院时NCCT-ASPECTS)与临床结果的相关性要强。二分ΔmRS,采用ΔmRS≤1表示良好的临床效果,MTT-NCCT 24 h ASPECTS不匹配的统计学显著性最低的阈值为2(P=0.04),该值预测良好的临床结果。在MTT-NCCT 24 h ASPECTS不匹配≥2的患者亚组(n=12),此参数和CTP-ASPECTS不匹配间有较强的相关性(r=0.79,P<0.001),并具有较强的线性相关性(R2=0.671)。结论 CTP ASPECTS不匹配可充分预测潜在的可挽救缺血脑组织的量。 展开更多
关键词 CT灌注成像(CTP) 急性缺血性脑卒中 Alberta脑卒中项目早期CT评分(aspects)
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CTP-ASPECTS评分在前循环梗死患者急性期预后判断中的应用 被引量:4
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作者 杨志华 《广东医学》 CAS CSCD 北大核心 2012年第9期1249-1251,共3页
目的探讨前循环梗死患者入院时CT灌注成像(CTP)-ASPECTS评分与急性期预后的关系。方法回顾分析起病时间在4.5~8.0 h的34例急性前循环梗死患者头颅CT平扫、CTP及头颅血管造影(CTA)检查结果,根据患者缺血性中风1周内的预后(有无意识改变... 目的探讨前循环梗死患者入院时CT灌注成像(CTP)-ASPECTS评分与急性期预后的关系。方法回顾分析起病时间在4.5~8.0 h的34例急性前循环梗死患者头颅CT平扫、CTP及头颅血管造影(CTA)检查结果,根据患者缺血性中风1周内的预后(有无意识改变或死亡)分为预后较好组及预后较差组,多模CT检查获得脑血流量(CBF)、脑血容量(CBV)、平均通过时间(MTT)、达峰时间等参数图,并对各参数图进行ASPECTS评分,同时获得动态CT血管成像(CTA)。比较两组患者CTP参数ASPECTS评分的差异。结果 34例患者中预后较差组12例,预后较差组CBV-ASPECTS评分较低,与预后较好组比较差异有统计学意义(P<0.01),两组病变侧CBF-ASPECTS与MTT-ASPECTS比较差异无统计学意义(P>0.05)。结论 CBV-ASPECTS评分可以作为前循环梗死患者急性期预后的预测因子。 展开更多
关键词 中风 aspects评分 头颅多模CT 预后
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NIHSS/DWI-ASPECTS不匹配预测大脑中动脉供血区脑梗死早期神经功能恶化 被引量:13
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作者 方传勤 王娟娟 +3 位作者 杜艳群 戴鸣 朱人定 何晓璐 《中风与神经疾病杂志》 CAS 2019年第7期628-631,共4页
目的 探究NIHSS/DWI-ASPECTS不匹配对大脑中动脉供血区脑梗死早期神经功能恶化的预测价值。方法 回顾性收集2017年3月~2018年5月因大脑中动脉供血区脑梗死在安徽医科大学第二附属医院神经内科住院的患者。收集其临床资料,根据入院时和住... 目的 探究NIHSS/DWI-ASPECTS不匹配对大脑中动脉供血区脑梗死早期神经功能恶化的预测价值。方法 回顾性收集2017年3月~2018年5月因大脑中动脉供血区脑梗死在安徽医科大学第二附属医院神经内科住院的患者。收集其临床资料,根据入院时和住院72 h NIHSS评分,评估早期神经功能恶化(early neurological deterioration,END),将患者分为END组和非END组。所有患者在入院48 h内完成头部MRI检查,并行DWI-Alberta 卒中项目早期CT评分(DWI-ASPECTS),NIHSS/DWI-ASPECTS不匹配(NIHSS/DWI-ASPECTS Mismatch,NDM)定义为 NIHSS评分≥8且DWI-ASPECTS≥8,应用多变量Logistic回归分析NDM与大脑中动脉供血区脑梗死END的相关性。结果 共收集94例大脑中动脉供血区脑梗死患者,男性52例(55.3%),年龄(65.4±11.0)岁。符合END患者31例(33%)。NIHSS/DWI-ASPECTS不匹配(NDM)病例18例(19.1%),其中END组14例(45%),非END组4例(6.5%)。END组年龄大、NIHSS高、DWI-ASPECTS低、NDM患者比例显著高于非END组( P ≤0.05或 P ≤0.01)。多变量Logistic回归分析显示,在校正混杂因素后,DWI-ASPECTS(优势比0.637,95%置信区间0.409~0.994, P =0.047)和NDM(优势比13.175,95%置信区间1.539~112.824, P =0.019)是大脑中动脉供血区脑梗死END的预测因素。结论 NIHSS/DWI-ASPECTS不匹配对大脑中动脉供血区脑梗死早期神经功能恶化具有一定的预测价值。 展开更多
关键词 NIHSS/DWI-aspects不匹配 DWI-Alberta卒中项目早期CT评分 脑梗死 早期神经功能恶化 预测价值
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The Synthesis of Aspects on the Management of Second Language Teaching
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作者 李阳 李晓理 《语言与文化研究》 2009年第1期11-16,共6页
Principles which teachers should adhere to in second language class are based on the synthesis of linguistic,cultural and competent aspects.This paper first puts forward linguistic,cultural and competent aspects of se... Principles which teachers should adhere to in second language class are based on the synthesis of linguistic,cultural and competent aspects.This paper first puts forward linguistic,cultural and competent aspects of second language teaching.Then,the principles which teachers should adhere to in second language class are introduced.Finally,the synthesis implication for second language teaching is presented. 展开更多
关键词 LINGUISTIC CULTURAL and COMPETENT aspects SECOND l
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治疗后DWI-ASPECTS评分对急性缺血性脑卒中的预后评估 被引量:8
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作者 吴江 朱艳 +3 位作者 柏根基 郭莉莉 安坤 徐青青 《临床放射学杂志》 北大核心 2023年第12期1866-1870,共5页
目的探讨Alberta卒中项目早期CT评分(ASPECTS)对急性缺血性脑卒中(AIS)患者血管内血栓切除术(EVT)后扩散加权成像(DWI)的预后评估价值。方法选择淮安市第一人民医院神经内科2019年3月至2022年2月接受EVT的大脑中动脉AIS患者121例,根据患... 目的探讨Alberta卒中项目早期CT评分(ASPECTS)对急性缺血性脑卒中(AIS)患者血管内血栓切除术(EVT)后扩散加权成像(DWI)的预后评估价值。方法选择淮安市第一人民医院神经内科2019年3月至2022年2月接受EVT的大脑中动脉AIS患者121例,根据患者3个月后改良Rankin量表(mRS)评分分为预后良好组(0~2分)和预后不良组(3~6分)。比较两组患者临床资料和影像指标差异,应用Logistic回归分析临床及影像指标中有统计学意义的变量,使用受试者工作特征曲线(ROC)和DeLong检验比较治疗后DWI-ASPECTS评分和梗死体积对AIS患者的预后评估价值。结果共121例患者,预后良好组67例(55.4%),出血转化17例(25.4%);预后不良组54例(44.6%),出血转化30例(55.5%)。预后良好组DWI-ASPECTS评分更高、梗死体积更小、入院美国国立卫生研究院卒中量表(NIHSS)评分更低,与预后不良组差异有统计学意义(P<0.05)。治疗后DWI-ASPECTS评分和梗死体积有相关性,差异有统计学意义(r=-0.832,P=0.00)。Logistic回归分析显示治疗后DWI-ASPECTS评分(OR=0.315,P=0.00)及梗死体积(OR=1.068,P=0.00)均是大脑中动脉AIS患者EVT术后预后不良的独立预测因子。经ROC曲线进一步分析显示EVT术后DWI-ASPECTS评分评估3个月后mRS评分的曲线下面积(AUC)为0.887(95%CI:0.827~0.948),预测不良预后的最佳临界点为5.5分,敏感度为73.1%,特异度为87%。而梗死体积评估3个月后mRS评分的AUC为0.907(95%CI:0.854~0.960),预测不良预后的最佳临界点为86.5 ml,敏感度为68.5%,特异度为98.5%。结论治疗后DWI-ASPECTS评分可代替梗死体积来预测AIS患者EVT术后的临床预后。 展开更多
关键词 aspects 急性缺血性脑卒中 扩散加权成像 预后
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.NET平台利用AspectSharp实现权限验证 被引量:2
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作者 靳小强 唐宁九 胡雪亮 《计算机应用研究》 CSCD 北大核心 2006年第8期152-154,共3页
通过对AOP和OOP的简单分析提出了AOP的发展前景;介绍Dynam icProxy的基本原理和拦截机制以及.NET平台下AOP实现技术的研究;最后在此基础上提出利用AspectSharp实现权限验证的思路。
关键词 面向方面的编程 aspect DynamicProxy
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ASPECTs联合ASITN/SIR模式评估超时间窗前循环脑梗死血管内治疗临床研究 被引量:5
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作者 蒋文贤 周义杰 +3 位作者 胡启洋 黄丽燕 康玉卓 王树青 《中国实用神经疾病杂志》 2021年第10期853-860,共8页
目的探讨ASPECTs评分联合ASITN/SIR侧支循环评分模式评估前循环急性大动脉脑梗死患者超时间窗血管内治疗的临床效果。方法收集52例超时间窗急性大动脉闭塞脑梗死患者为研究组,以本中心63例标准治疗窗内患者为对照组,在三系统同轴下使用... 目的探讨ASPECTs评分联合ASITN/SIR侧支循环评分模式评估前循环急性大动脉脑梗死患者超时间窗血管内治疗的临床效果。方法收集52例超时间窗急性大动脉闭塞脑梗死患者为研究组,以本中心63例标准治疗窗内患者为对照组,在三系统同轴下使用颅内血栓抽吸系统、支架取栓装置进行机械取栓治疗,纵向对比2组术后90 d良好恢复率(mRS≤2分)、安全性(症状性颅内出血转化、病死率),研究组间横向对比有效性,主要对比手术前后NIHSS评分。结果研究组与对照组患者术前NIHSS评分差异无统计学意义(P>0.05)。研究组与对照组术中mTICI分级血管再通率分别为90.4%(47/52)、92.1%(58/63),2组比较差异无统计学意义(P>0.05);2组术后良好恢复率(90 d mRS≤2分)[分别为42.3%(22/52)、40%(25/63)]、安全性[研究组症状性颅内出血转化、病死率分别为13.5%(7/52)、15.4%(8/52),对照组分别为11.1%(6/63)、12.7%(8/63)],2组比较差异均无统计学意义(P>0.05)。结论在ASPECTs评分联合ASITN/SIR侧支循环评估模式下急性缺血性脑卒中超时间窗血管内治疗临床疗效具有可行性。 展开更多
关键词 急性大动脉脑梗死 侧支循环 aspects评分 ASITN/SIR 前循环
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ASPECTS评分对发病时间未知的急性脑卒中机械取栓术的评估价值 被引量:8
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作者 井淑艳 刘春颖 +1 位作者 任庆云 何丽 《临床放射学杂志》 北大核心 2022年第2期246-250,共5页
目的探讨CT平扫ASPECTS评分在机械取栓术治疗发病时间未知的大脑中动脉急性缺血性脑卒中的评估价值。方法回顾性分析92例发病时间未知的大脑中动脉M1段急性缺血性脑卒中患者的术前CT平扫ASPECTS评分及临床资料。采用单因素和多因素Logis... 目的探讨CT平扫ASPECTS评分在机械取栓术治疗发病时间未知的大脑中动脉急性缺血性脑卒中的评估价值。方法回顾性分析92例发病时间未知的大脑中动脉M1段急性缺血性脑卒中患者的术前CT平扫ASPECTS评分及临床资料。采用单因素和多因素Logistic回归分析筛查发病时间未知的大脑中动脉M1段急性缺血性脑卒中机械取栓术后预后良好的影响因素,绘制受试者工作特征(ROC)曲线确定独立影响因素预测预后良好的临界值。结果根据术后CT平扫脑梗死体积分为预后良好组(50例)和预后不良组(42例)。多因素Logistic回归分析显示,术前ASPECTS评分(OR=1.633,95%CI:1.306~2.041;P=0.000)是大脑中动脉急性缺血性脑卒中机械取栓术后转归是否良好的独立影响因素。术前ASPECTS评分曲线下面积(AUC)为0.793(95%CI:0.700~0.886,P=0.01);用于预测预后良好的临界值为5.50分,其灵敏度为0.840、特异度为0.643,约登指数为0.488。结论术前ASPECTS评分是影响发病时间未知的大脑中动脉M1段急性缺血性脑卒中机械取栓术后转归的独立影响因素,ASPECTS评分≥6分的患者机械取栓治疗有较好的预后。 展开更多
关键词 aspects评分 急性缺血性脑卒中 大脑中动脉 体层摄影术 X线计算机
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基于CT平扫的ASPECTS与急性缺血性脑卒中核心梗死体积的相关性研究 被引量:8
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作者 褚玥 许晓泉 +5 位作者 马高 鲁珊珊 吴蓉蓉 刘圣 施海彬 吴飞云 《临床放射学杂志》 北大核心 2022年第9期1620-1624,共5页
目的 探讨基于CT平扫(NCCT)的Alberta卒中项目早期CT评分(ASPECTS)与CT灌注成像(CTP)核心梗死体积的相关性,并评估ASPECTS对核心梗死体积<70 ml的预测价值。方法 回顾性分析307例急性缺血性脑卒中(AIS)患者的临床资料。所有患者均因... 目的 探讨基于CT平扫(NCCT)的Alberta卒中项目早期CT评分(ASPECTS)与CT灌注成像(CTP)核心梗死体积的相关性,并评估ASPECTS对核心梗死体积<70 ml的预测价值。方法 回顾性分析307例急性缺血性脑卒中(AIS)患者的临床资料。所有患者均因前循环大血管闭塞行NCCT和CTP评估。记录自动化灌注分析软件获得的核心梗死体积,并基于NCCT图像判读ASPECTS。采用Spearman检验分析ASPECTS与核心梗死体积的相关性。采用受试者工作特性(ROC)曲线分析评估ASPECTS预测核心梗死体积<70 ml的效能。结果 307例患者包括116超窗患者(发病时间6~24 h, 104例;醒后卒中,12例)。在所有患者和超窗患者中,ASPECTS均与核心梗死体积呈显著负相关(ρ=-0.797,ρ=-0.825)。ROC曲线分析提示,以ASPECTS≥7分作为阈值,其预测核心梗死体积<70 ml的曲线下面积(AUC)为0.947,敏感度和特异度分别为86.8%和87.5%。在超窗患者中,以ASPECTS≥6分作为阈值,其预测核心梗死体积<70 ml的效能最优(AUC为0.950,敏感度为91.6%,特异度为90.5%)。结论 基于NCCT的ASPECTS与核心梗死体积相关,可有效预测核心梗死体积,为前循环大血管闭塞性AIS患者治疗策略的制定提供依据。 展开更多
关键词 急性缺血性脑卒中 体层摄影术 Alberta卒中项目早期CT评分 灌注成像 梗死核心
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Psychological and social aspects of infertility in men: an overview of the evidence and implications for psychologically informed clinical care and future research 被引量:21
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作者 Jane RW Fisher Karin Hammarberg 《Asian Journal of Andrology》 SCIE CAS CSCD 2012年第1期121-129,179,共10页
Research concerning the psychosocial aspects of infertility and infertility treatment focuses more often on women than men. The aim of this review was to synthesize the English-language evidence related to the psychol... Research concerning the psychosocial aspects of infertility and infertility treatment focuses more often on women than men. The aim of this review was to synthesize the English-language evidence related to the psychological and social aspects of infertility in men and discuss the implications of these reports for clinical care and future research. A structured search identified 73 studies that reported data concerning the desire for fatherhood and the psychological and social aspects of diagnosis, assisted reproductive technology (ART) treatment and unsuccessful treatment among men with fertility difficulties. The studies are diverse in conceptualisation, design, setting and data collection, but the findings were reasonably consistent. These studies indicated that fertile and infertile childless men of reproductive age have desires to experience parenthood that are similar to those of their female counterparts; in addition, diagnosis and initiation of treatment are associated with elevated infertility-specific anxiety, and unsuccessful treatment can lead to a state of lasting sadness. However, rates of clinically significant mental health problems among this patient population are no higher than in the general population. Infertile men who are socially isolated, have an avoidant coping style and appraise stressful events as overwhelming, are more vulnerable to severe anxiety than men without these characteristics. Men prefer oral to written treatment information and prefer to receive emotional support from infertility clinicians rather than from mental health professionals, self-help support groups or friends. Nevertheless, structured, facilitated psycho-educational groups that are didactic but permit informal sharing of experiences might be beneficial. There are gaps in knowledge about factors governing seeking, persisting with and deciding to cease treatment; experiences of invasive procedures; parenting after assisted conception; adoption and infertility-related grief and shame among men. Few resource-constrained countries have any data concerning male experiences of infertility. 展开更多
关键词 assisted reproductive technologies male infertility psychologically-informed clinical care psychosocial aspects
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Positive aspects of caregiving in schizophrenia: A review 被引量:10
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作者 Parmanand Kulhara Natasha Kate +1 位作者 Sandeep Grover Ritu Nehra 《World Journal of Psychiatry》 SCIE 2012年第3期43-48,共6页
Schizophrenia is a severe mental illness which is associated with significant consequences for both the patients and their relatives. Due to chronicity of the illness, the relatives of patients of schizophrenia have t... Schizophrenia is a severe mental illness which is associated with significant consequences for both the patients and their relatives. Due to chronicity of the illness, the relatives of patients of schizophrenia have to bear the main brunt of the illness. Studies across the world have evaluated various aspects of caregiving and caregivers such as burden, coping, quality of life, social support, expressed emotions, and psychological morbidity. In general the research has looked at caregiving as a negative phenomenon, however, now it is increasingly recognised that caregiving is not only associated with negative consequences only, also experience subjective gains and satisfaction. This review focus on the conceptual issues, instruments available to assess the positive aspects of caregiving and the various correlates of positive aspects of caregiving reported in relation to schizophrenia. The positive aspect of caregiving has been variously measured as positive caregiving experience, caregiving satisfaction, caregiving gains and finding meaning through caregiving scale and positive aspects of caregiving experience. Studies suggests that caregivers of patients with schizophrenia and psychotic disorders experience caregiving gains(in the form of becoming more sensitive to persons with disabilities, clarity about their priorities in life and a greater sense of inner strength), experience good aspects of relationship with the patient, do have personal positive experiences. Some of the studies suggest that those who experience greater negative caregiving experience also do experience positive caregiving experience. 展开更多
关键词 SCHIZOPHRENIA CAREGIVING POSITIVE aspects
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人工智能在急性缺血性脑卒中早期ASPECTS评估中的研究进展 被引量:3
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作者 方婷 杨一风 +1 位作者 贾守强 聂生东 《中国医学物理学杂志》 CSCD 2023年第8期1045-1050,共6页
急性缺血性脑卒中(AIS)的早期诊断和及时干预对于降低脑卒中的致死致残率具有重要意义。目前,临床上采用阿尔伯塔卒中项目早期计算机断层扫描评分(ASPECTS)来评估AIS的严重程度,但人为评估方法主观性过强且耗时耗力,极易导致漏诊、误诊... 急性缺血性脑卒中(AIS)的早期诊断和及时干预对于降低脑卒中的致死致残率具有重要意义。目前,临床上采用阿尔伯塔卒中项目早期计算机断层扫描评分(ASPECTS)来评估AIS的严重程度,但人为评估方法主观性过强且耗时耗力,极易导致漏诊、误诊。因此,近年来涌现了许多基于人工智能算法对AIS进行ASPECTS自动评分的方法研究。本文对此进行综述,以期为进一步研究探索提供参考。首先,简述ASPECTS评分的可靠性;其次,重点介绍目前基于人工智能的脑区提取及脑区评分的方法,证实计算机辅助ASPECTS评分能够有效提高对病情判断的可靠性;最后,总结现有ASPECTS自动评分方法存在的不足,并对其未来的发展趋势进行展望。 展开更多
关键词 aspects评分 急性缺血性脑卒中 人工智能 自动化评分 综述
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Large Scale Aspects of India-China Summer Monsoon Rainfall 被引量:18
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作者 R. H. Kripalani S. V. Singh 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 1993年第1期71-84,共14页
This study investigates the dominant modes of variability in monthly and seasonal rainfall over the India-China region mainly through Empirical Orthogonal Function (EOF) analysis. The EOFs have shown that whereas the ... This study investigates the dominant modes of variability in monthly and seasonal rainfall over the India-China region mainly through Empirical Orthogonal Function (EOF) analysis. The EOFs have shown that whereas the rainfall over India varies as one coherent zone, that over China varies in east-west oriented bands. The influence of this banded structure extends well into India.Relationship of rainfall with large scale parameters such as the subtropical ridge over the Indian and the western Pacific regions, Southern Oscillation, the Northern Hemispheric surface air temperature and stratospheric winds have also been investigated. These results show that the rainfall over the area around 40°N, 110°E over China is highly related with rainfall over India. The subtropical ridge over the Indian region is an important predictor over India as well an over the northern China region. ' 展开更多
关键词 OVER In Large Scale aspects of India-China Summer Monsoon Rainfall EOF
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Multi-Level Knowledge Engineering Approach for Mapping Implicit Aspects to Explicit Aspects 被引量:4
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作者 Jibran Mir Azhar Mahmood Shaheen Khatoon 《Computers, Materials & Continua》 SCIE EI 2022年第2期3491-3509,共19页
Aspect’s extraction is a critical task in aspect-based sentiment analysis,including explicit and implicit aspects identification.While extensive research has identified explicit aspects,little effort has been put for... Aspect’s extraction is a critical task in aspect-based sentiment analysis,including explicit and implicit aspects identification.While extensive research has identified explicit aspects,little effort has been put forward on implicit aspects extraction due to the complexity of the problem.Moreover,existing research on implicit aspect identification is widely carried out on product reviews targeting specific aspects while neglecting sentences’dependency problems.Therefore,in this paper,a multi-level knowledge engineering approach for identifying implicit movie aspects is proposed.The proposed method first identifies explicit aspects using a variant of BiLSTM and CRF(Bidirectional Long Short Memory-Conditional Random Field),which serve as a memory to process dependent sentences to infer implicit aspects.It can identify implicit aspects from four types of sentences,including independent and three types of dependent sentences.The study is evaluated on a largemovie reviews dataset with 50k examples.The experimental results showed that the explicit aspect identification method achieved 89%F1-score and implicit aspect extraction methods achieved 76%F1-score.In addition,the proposed approach also performs better than the state-of-the-art techniques(NMFIAD andML-KB+)on the product review dataset,where it achieved 93%precision,92%recall,and 93%F1-score. 展开更多
关键词 Movie NEs(named entities) aspects opinion words annotation process memory implicit aspects implicit aspects mapping word embedding and BiLSTM
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Effects of slope aspects on forest compositions, community structures and soil properties in natural temperate forests of Garhwal Himalaya 被引量:6
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作者 C.M.Sharma N.P.Baduni +2 位作者 Sumeet Gairola S.K.Ghildiyal Sarvesh Suyal 《Journal of Forestry Research》 SCIE CAS CSCD 2010年第3期331-337,398,共8页
The present study was undertaken in seven natural forest types of temperate zone (1500 to 3100 m, a.s.l.) of Garhwal Himalaya to understand the effects of slope aspects viz., north-east (NE), north-west (NW), so... The present study was undertaken in seven natural forest types of temperate zone (1500 to 3100 m, a.s.l.) of Garhwal Himalaya to understand the effects of slope aspects viz., north-east (NE), north-west (NW), south-east (SE) and south-west (SW), on the forest structure, composition and soil characteristics of each selected forest type. The sample plots in each forest type were laid out by using stratified random approach. The indices i.e., the Importance Value Index, Shannon-Wiener diversity index, Simpson’s concentration of Dominance, Simpson diver-sity index, Pielou equitability and Margalef species richness index were calculated statistically using standard softwares to elucidate the differ-ences in forest structure and composition of forest types on different slope aspects of the sites. The composite soil samples were taken from each forest stand and the physico-chemical properties of the soil i.e., moisture content (MC), water holding capacity (WHC), pH, organic carbon (OC), phosphorus (P), potassium (K) and available nitrogen (N) were analyzed. The results show that the higher values of total basal cover (74.4 m2·ha-1 in Quercus semecarpifolia forest), Concentration of dominance (0.85 in Pinus roxburghii forest) and Tree diversity (1.81 in Quercus floribunda forest) in the forests were recorded in the northern aspects. MC (40.8% in Quercus leucotrichophora forest), WHC (48.9% in Cupressus torulosa forest), OC (3.8% in Cedrus deodara forest), P (31.9 kg·ha-1 in Quercus leucotrichophora forest) and N (1.0% in Pinus roxburghii forest) had also higher values in the soils of northern aspects. Consequently the higher productivity of the forests was also noticed on the northern aspects. 展开更多
关键词 DIVERSITY stem density forest composition aspects soil nutrients
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