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90篇 您的检索式:作者名="Jeremy N"
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1钆特醇及钆喷替酸葡甲胺在1.5、3.0 TMR下鼠脑胶质瘤模型增强扫描中的应用比较研究显示文摘目的 对比钆特醇及Gd-DTPA在1.5及3.0 T MR下的增强效果,比较两者在增强扫描中的应用价值.方法 42只CDF Fisher 344雄性大鼠,采用经皮导管脑内接种胶质瘤细胞,培育1周,制作鼠脑胶质瘤模型.将大鼠采用数字表法随机分为4组,分别为12、10、10、10只,进行1.5及3.0 T MR下注射钆特醇及Gd-DTPA增强效果对比、注射钆特醇在1.5及3.0 T两种场强下增强效果对比、1.5 T MR下使用标准剂量钆特醇与3.0 T下使用半剂量增强效果对比.两次扫描间隔24 h.选取注射对比剂前及注射后第1、3、5、7、9分钟时间点的T1加权图像,利用影像工作站分析计算各图像的信噪比(signal to noise ratio,SNR),对比噪声比(contrast to noise ratio,CNR)及对比增强比(contrast enhancement,CE),所得数据选用Student配对双尾t检验行统计学分析.结果 1.5 T MR下,注射Gd-DTPA后各时间点图像SNR、CNR和CE平均值分别为54.4±3.2、17.0±3.3、20.8±3.4;注射钆特醇后各值分别为53.2±3.2、17.2±3.1、20.8±3.2,两者差异无统计学意义(t值分别为2.247、0.403、0.076,P值均>0.05).3.0 T MR下,注射Gd-DTPA后各时间点图像SNR、CNR和CE平均值分别为94.8±7.1、38.0±6.0、45.0±6.3;注射钆特醇后各值分别为95.5±2.9、37.2±2.7、45.6±2.8,两者差异亦无统计学意义(t值分别为0.303、0.573、0.357,P值均>0.05).注射钆特醇在1.5 T MR下增强扫描后各时间点图像SNR、CNR和CE平均值分别为51.9±3.0、15.6±3.0、18.6±3.0;在3.0 T MR下图像各值分别为86.1±4.9、27.4±5.0、37.3±5.3,均高于1.5 T MRI图像,差异有统计学意义(t值分别为36.227、11.977、17.106,P值均<0.05).1.5 T MR下注射标准剂量钆特醇增强扫描后,各时间点图像SNR、CNR和CE平均值分别为53.8±1.6、17.7±1.7、20.3±1.6;3.0 T MR下注射半剂量钆特醇增强图像各值分别为72.2±2.4、15.4±2.4、21.1±2.4,两者SNR、CNR均值差异有统计学意义(t值分别为31.503、5.137,P值均<0.05),而两者CE均值差异无统计学意义(t=2.033,P>0.05).结论 利用鼠脑胶质瘤模型,在1.5及3.0 T MR下注射钆特醇和Gd-DTPA行增强扫描,两者增强效果无明显差异;3.0 T MR下注射钆特醇行增强扫描,效果明显优于在1.5 T条件下使用;3.0 T MR下使用半剂量钆特醇与在1.5 T下使用标准剂量增强效果相仿,同样能取得满意的增强效果.因此,使用钆特醇可在保证增强效果的同时,在一定程度上降低使用MRI对比剂的风险,增加安全性.艾飞 Val M Runge John N Morelli Lan.Vu Jeremy Cannel Alan T Loynachan 漆剑频 李小明 2010中华放射学杂志2010,44,11:2
2Corpus design criteria 显示文摘Atkins S Jeremy C Ostler N 1992Literary and Linguistic Computing1992,7,:1
3Species variation in the fecal mctabolome gives insight into differential gastrointestinal function 显示文摘Jasmina S Wang Y L Jeremy K N 2008J Proteome Res2008,7,1:1
4Microbes Central to Human Reproduction显示文摘Gregor Reid Patrizia Brigidi Jeremy P. Burton Nikhat Contractor Sylvia Duncan Emilie Fargier Colin Hill Sarah Lebeer Rocio Martín Andrew J. McBain Gil Mor Catherine O’Neill Juan Miguel Rodríguez Jonathan Swann Saskia Hemert Juliett Ansell 2015Am J Reprod Immunol2015,,1:1
5Responses of dairy cows and calves to each other’s vocalizations after early separation显示文摘Jeremy N M Ruth M M Weary D M 2002Applied Animal Behaviour Science2002,78,1:1
6Viscoelastic properties of polystyrene and poly ( methyl methacrylate ) dispersions sterically stabilized by hydrophobically modified inulin ( polyfructose ) polymeric surfactant显示文摘Jeremie N Marc O Jordi E 2008Journal of Colloid and Interface Science2008,,1:1
7Insertional mutagenesis as a probe of rhodopsin' s topography stability and activity显示文摘Jimo B Jeremy N 1994Biol Chem1994,,14:1
8Sustained increases of plasma homocysteine,copper,and serum ceruloplasmin after coronary artery bypass grafting显示文摘 Shukla N Anqelini GD 2002Ann Thorac Surg2002,74,5:1
9Reference genome sequence of the model plant Setaria显示文摘Jeffrey L Bennetzen Jeremy Schmutz Hao Wang RyanPercifield Jennifer Hawkins Ana C Pontaroli Matt Estep Liang Feng Justin N Vaughn Jane Grimwood JerryJenkins Kerrie Barry Erika Lindquist Uffe Hellsten Shweta Deshpande Xuewen Wang Xiaomei Wu ThereseMitros Jimmy Triplett Xiaohan Yang Chu-Yu Ye Margarita Mauro-Her-rera Lin Wang Pinghua Li ManojSharma Rita Sharma Pamela C Ronald Olivier Panaud Elizabeth A Kellogg Thomas P Brutnell Andrew NDoust Gerald A Tuskan Daniel Rokhsar Katrien MDevos 2012Nature Biotechnology2012,,30:1
10Role of radiation therapy in the combined-modality treatment of patients with extensive disease small-cell lung cancer: a randomized study显示文摘Jeremie B Shibamoto Y Nikolie N 1999J Clin Oncol1999,17,7:1
11On the reported magnetic precursor of the 1989 Loma Prieta earthquake显示文摘Jeremy N Jeffrey J Malcolm J S 2009Phys Earth Planet Inter2009,173,34:1
12gene expression profiling and genetic markers in glioblastoma survival显示文摘Jeremy N Rich Christopher Hans Beatrix Jones 2005Cancer Res2005,65,10:1
13Towards regenerative therapy for cardiac disease显示文摘Leon M Ptaszek Moussa Mansour Jeremy N Ruskin Kenneth R Chien 20122012 (9819)2012,,9819:1
14Global association of air pol- lution and heart failure: a systematic review and meta-analysis 显示文摘Anoop S Jeremy P Harish N 2013Lancet2013,382,9:1
15Solar cell light trapping beyond the ray optic limit显示文摘Callahan Dennis M Munday Jeremy N Atwater Harry A 2012Nano Letter2012,12,1:1
16The texture and anisotropy of magnesium–zinc–rare earth alloy sheets显示文摘Jan Bohlen Marcus R. Nürnberg Jeremy W. Senn Dietmar Letzig Sean R. Agnew 2007Acta Materialia2007,,6:1
17Two WD-repeat genes from cotton are functional homologues of the Arabidopsis thaliana transparent testa glabra1(TTG1) gene显示文摘John A H Amanda R W Jeremy N T 2005Plant Molecular Biology2005,57,:1
18The Texture and Anisotropy of Magnesium-Zinc Rare Earth Alloy Sheets显示文摘JAN B MARCUS R N JEREMY W S 2007Acta Materialia2007,55,:1
19Calcium and the replication of human vascular smooth muscle cells:studies on the activation and translocation of extracellular signal regulated kinase(ERK) and cyclin D1 expression显示文摘Shukla N Rowe D Hinton J Angelini GD Jeremy JY 2005Eur J Pharmacol2005,509,1:1
20Nitroaspirins and morpholinosydnonimine but not aspirin inhibit the formation of superoxide and the expression of gp91phox induced by endotoxin and cytokines in pig pulmonary artery vascular smooth muscle cells and endothelial cells显示文摘Muzaffar S Shukla N Angelini G Jeremy J Y 2004Circulation2004,110,9:1
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