维普中文期刊产品整合服务
437篇 您的检索式:作者名="Sahn"
    题名 作者 年代 出处 被引量
1超声二维斑点追踪技术对左室心肌周向收缩功能的研究显示文摘目的利用超声二维斑点追踪技术(2DS)评价实验动物猪左室心肌周向收缩功能。方法25只猪开胸后取中部水平左室短轴切面,采集连续3个心动周期二维灰阶图像,并与左室压力曲线同步(±dp/dt)。使用EchoPAC软件包进行脱机分析。运用2DS技术测量左室心内膜层和心外膜层6个心肌节段的周向收缩期峰值应变。结果心内膜层各室壁节段周向收缩期峰值应变均高于心外膜层(P<0.01),尤以前间隔、侧壁、下壁和室间隔节段差异更为显著(P<0.0001)。此外,心内膜层和心外膜层各节段心肌周向收缩期峰值应变均与左室dp/dt相关性良好。结论超声二维斑点追踪技术因其不受声束角度限制的优点,能准确地评价左室局部心肌的周向收缩功能。潘敏 鲁树坤 王双双 刘俐 张蒂荣 陈芸 David J Sahn 2007中国医学影像技术2007,23,9:25
2超声二维斑点追踪技术对左室径向收缩功能的研究显示文摘目的利用二维斑点追踪技术(two-dimensional speckle tracking imaging,2D-STI)评价实验动物猪左室心肌径向收缩期峰值应变(peak systolic radial strain,Sr)。方法19只猪开胸后取左室短轴切面,采集连续3个心动周期二维灰阶和组织多普勒图像,并与左室压力曲线同步(±dp/dt)。使用Echo PAC软件包进行脱机分析。运用2D-STI和组织多普勒技术(TDI)分别测量左室心内膜层和心外膜层前间隔和左室后壁2个节段的Sr。结果相同心肌节段2D-STI测值普遍高于TDI测值。2D-STI测量的Sr与左室峰值dp/dt的相关性高于TDI,尤其在心外膜层。结论二维斑点追踪技术在评价心内膜层和心外膜层,尤其是心外膜层左室局部心肌收缩功能中较组织多普勒技术有更高的准确性,且操作更简便。潘敏 鲁树坤 王双双 刘俐 张蒂荣 陈芸 David J Sahn 2008中国超声医学杂志2008,24,1:11
3Assessment of Left Ventricular Radial Deformation by Speckle Tracking Imaging显示文摘The left ventricular radial strain in the inner and outer layers was evaluated by using two-dimensional speckle tracking imaging(2DS).Twenty-five piglets were studied.The short axis views were acquired.Peak systolic radial strain was measured from 6 circumferential points related to 6 standard segments in the inner and outer layers respectively using 2DS methods.The peak positive first derivative(dp/dt) of left ventricular pressure was compared to the radial strain from 2DS.The inner band showed higher peak radial strain values as compared to the outer band at all of the segments(P<0.0001),but the differences had significance just in anteroseptal,posterior,inferior and septal segments(P<0.05).Good correlation could be found between radial strain of inner and outer layers and peak dp/dt(P<0.001).These preliminary results showed that the degree of local deformation or wall thickening of the ventricular wall in its inner layer was more obvious than its outer layer.It is suggested that the 2DS technique is useful and sensitive for better understanding the regional and global myocar-dial motion and its relationship to the complex architecture of myocardium.潘敏 罗浩 Ashraf Muhammad Schultheis Judy 李小葵 David J. Sahn 2009Journal of Huazhong University of Science and Technology(Medical Sciences)2009,29,5:4
4Superhydrophobic and antireflective nanograss-coated glass for high performance solar cells显示文摘我们在场为生产 superhydrophobic 的一个灵巧的方法 nanograss 涂(SNGC ) 在空气 / 眼镜拥有两个都减少的反射率和自我清洗的性质的玻璃表面连接。CaF 的折射索引 < 潜水艇 class= “ a-plus-plus ” > 玻璃底层上的 2 nanograss (NG ) 层,由看一眼的角度蒸汽免职扔了,在 500 nm 是 1.04,它是到目前为止曾经报导的秒低的价值。氟化的 NG 层产生一个高水位线接触角度(> 150 ?????Hyo Jin Gwon Yensil Park Cheon Woo Moon Sahn Nahm Seok-Jin Yoon Soo Young Kim Ho Won Jang 2014Nano Research2014,7,5:3
5Ceramic-metal package for high power LED lighting显示文摘灯光的轻射出的二极管(LEDs ) 在最近的年里在街光系统的地里画了大兴趣的高力量。分别地,为在商业市场的带的街光的成功的发射的关键参数是价格和轻效率,他们被材料极大地影响,尽最大努力使用的设计因素带了包裹。这篇文章介绍一个新图案和材料处理技术认识到包装带与的解决方案在价格和性能有益。合算的材料和处理技术能经由厚电影被认识到眼镜陶器的绝缘层和银售票员。用到在带的包裹的热水池的直接的热驱散的高度有效的热设计被表明。Yu Jin HEO Hyo Tae KIM Sahn NAHM Jihoon KIM Young Joon YOON Jonghee KIM 2012Frontiers of Optoelectronics2012,5,2:2
6Poverty compatisons over time and across countries in Africa 显示文摘SAHN D E STIFEL D C 2000World Development2000,28,12:1
7Demodicidosis in a child with leukemia 显示文摘Sahn EE Sheridan DM 1992J Am Aead Dermatol1992,27,:1
8Corticosteroids in acute respiratory failure显示文摘Jantz MA Sahn SA 1999AM J Respir Crit Care Med1999,160,2:1
9Accuracy of real-time three-dimensional echocardiography for quantifying right ventricular volume:static and pulsatile flow studies in an anatomic in vitro model显示文摘Schindera ST Mehwald PS Sahn DJ 2002J Ultrasound Med2002,21,10:1
10Spontaneous pneumothorax显示文摘Sahn SA Heffner JE 2000N Engl J Med2000,342,12:1
11Lipid pleural effusions 显示文摘Agrawal V Sahn SA 2008Am J Med Sci2008,335,1:1
12Effects of intrapleural heparin or urokinase on the extent 0f tetracycline-induced pleural disease显示文摘Strange C Baumann MH Sahn SA et a1 1995Am J Respir Crit Care Med1995,151,2:1
13Multiple cutaneous granular cell tumors in a child with possible neurofibromatosis 显示文摘Sahn EE Dunlavey ES Parsons JL 1997J Am Acad Dermatol1997,36,22:1
14Management ofmalignant pleural efusions显示文摘Sahn SA 2001Monaldi Arch Chest Dis2001,56,:1
15Primary care:spontaneous pneumothorax显示文摘Sahn SA Heffner JE 2000N Engl J Med2000,342,12:1
16Management of malignant pleural effusions 显示文摘Sahn SA 2001Monaldi Arch Chest Dis2001,56,5:1
17Assessment of mitral regurgitation显示文摘Irvine T Li X Sahn D 2002Heart2002,88,:1
18The Committee on M- Mode Standardization of the American Society of Echocardiography: recommendations regarding quantitation in M-mode echocardiography Results of survey of echocardiographic measurements 显示文摘Sahn D J DeMaria A Kisslo J 1978Circulation1978,58,10:1
19Rhythm abnormalities of the tetus显示文摘Homberger LK Sahn DJ 2007Heart2007,93,:1
20Clinical use of real time three dimensional echocardiography in pediatric cardiology显示文摘Mizelle KM Rice MJ Sahn DJ 2000Ec hocardiography2000,17,8:1
返回顶部 每页显示:
共22页 首页 上一页 第1页 下一页 末页 /22 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费