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冠状动脉血管成像的扫描剂量:双能量、双源与16层Ct的对比

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国际医学放射学杂志 2011年第3期 294-295页

作者： J.M.Kerl R.W.Bauer t.B.Maurer R.Aschenbach H.Korkusuz t.lehnert 庞国栋 Department of Diagnostic and Interventional Radiology Johann Wolfgang Goethe-University

目的对比双能量Ct(DECt)、双源Ct(DSCt)与16层Ct冠状动脉CtA(cCtA)的放射剂量估算及影像质量。材料与方法组1、组2、组3均为68例病人分别采用16层

关键词：心脏Ct 双能量Ct Ct 双源Ct 冠状动脉Ct血管成像

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微波消融对肺转移瘤的临床治疗应用

国际医学放射学杂志 2012年第1期 79-80页

作者： t.J.Vogl N.N.N.Naguib t.Gruber-Rouh K.Koitka t.lehnert N.E.A.Nour-Eldin 孟小茜 Institute for Diagnostic and Interventional Radiology University Hospital FrankfurtJohann Wolfgang Goethe UniversityTheodor-Stern-Kai 760590 Frankfurt am MainGermany

目的前瞻性评价微波消融治疗不能切除的肺转移瘤的安全性和疗效。材料与方法本研究获机构审查委员会批准,并得到所有病人的书面知情同意。对80例病人[男30例,女50例;48～68岁,平均(59.7±6.4)岁]的130个肺转

关键词：肺转移瘤微波消融生存率

基于定位像的自动管电压及自动管电流的Ct在胸腹外伤检查中的应用——与固定kV和电流调节的Ct检查比较

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国际医学放射学杂志 2014年第5期 499-500页

作者： C.Frellesen W.Stock J.M.Kerl t.lehnert J.L.Wichmann C.Nau 吴爽 Department of Diagnostic and Interventional Radiology Clinic of the Goethe University

摘要目的研究自动管电压选择技术对胸腹多发伤增强 Ct 检查中的影像质量和辐射剂量参数的影响方法对100 例病人进行了16层Ct检查,扫描条件仅为120kV、190mAs

关键词：管电压定位像胸腹外伤 Ct kV

使用C型臂Ct测量术中血容量来预测恶性肝肿瘤对反复肝动脉化学栓塞术(tACE)的治疗反应

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国际医学放射学杂志 2016年第3期 324-324页

作者： t.Vogl P.Schaefer t.lehnert N.A.Nour-Eldin H.Ackermann E.Mbalisike 陈思璇 Institute for Diagnostic and Interventional Radiology Johann Wolfgang Goethe-University Frankfurt

摘要目的评价利用C型臂Ct测量肝脏恶性肿瘤实质血容量(PBV)的可行性,检测反复肝动脉化学栓塞术(tACE)后PBV的变化,并把这些变化与MRI观察的肿瘤大小变化相联系。方法纳入111例肝脏恶性肿瘤病人。每隔4～6周,病人行MRI和tACE。在进行C型... 详细信息

摘要目的评价利用C型臂Ct测量肝脏恶性肿瘤实质血容量(PBV)的可行性,检测反复肝动脉化学栓塞术(tACE)后PBV的变化,并把这些变化与MRI观察的肿瘤大小变化相联系。方法纳入111例肝脏恶性肿瘤病人。每隔4～6周,病人行MRI和tACE。在进行C型臂Ct介入手术中,进行影像后处理来生成PBV图。评估C臂Ct测得的血

关键词：化学栓塞术 MRI tACE 血容量肝动脉 Ct

急性肺栓塞双源Ct肺动脉血容量评估与D-二聚体水平、右心高负荷和临床预后的相关性研究

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国际医学放射学杂志 2011年第6期 601-601页

作者： R.W.Bauer C.Frellesen M.Renker B.Schell t.lehnert H.Ackermann 杨泽宏 Department of Diagnostic and Interventional Radiology Clinic of the Goethe UniversityHaus 23C UGTheodor-Stern-Kai 760590 FrankfurtGermany

目的探讨双源Ct肺血容量评估中灌注缺损(PD)大小在预测急性肺栓塞(PE)病人右心高负荷和病人预后中的作用,以及其与D-二聚体水平的相关性。方法回顾性分析53例急性肺栓塞病人的双源Ct肺血管成像资料。双源碘图上测量肺栓塞引起的肺动脉... 详细信息

目的探讨双源Ct肺血容量评估中灌注缺损(PD)大小在预测急性肺栓塞(PE)病人右心高负荷和病人预后中的作用,以及其与D-二聚体水平的相关性。方法回顾性分析53例急性肺栓塞病人的双源Ct肺血管成像资料。双源碘图上测量肺栓塞引起的肺动脉灌注缺损大小、绝对值灌注缺损

关键词：双源Ct 肺栓塞血容量评估临床预后右心高负荷

子宫动脉栓塞术:使用三维对比增强磁共振血管成像预先优化最佳的球管倾斜角度

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国际医学放射学杂志 2009年第4期32卷 393-393页

作者： N.N.N.Naguib N.E.A.Nour-Eldin t.lehnert R.M.Hammerstingl H.Korku-suz K.Eichler 何岸苇 Institute for Diagnostic and Interventional Radiology Johann Wolfgang Goethe-University Frankfurt

目的评价预先应用三维对比增强MR血管成像,观察子宫动脉的起源,判断最佳的球管倾斜角度在子宫动脉栓塞术中对病人的辐射剂量、透视时间及对比剂用量的影响。方法该研究获得伦理审查委员会批准并获得知情同意。该前瞻性研究包括20例连续... 详细信息

目的评价预先应用三维对比增强MR血管成像,观察子宫动脉的起源,判断最佳的球管倾斜角度在子宫动脉栓塞术中对病人的辐射剂量、透视时间及对比剂用量的影响。方法该研究获得伦理审查委员会批准并获得知情同意。该前瞻性研究包括20例连续病例（年龄范围37～56岁）,应用三维对比增强磁共振血管成像预测最佳的球管倾斜角度,并提供给介入放射学医师。通过血管图像软件进行三维重建。由同一介入放射学医师回顾性分析其前操作的20例作为对照组（年龄范围39～56岁）,

关键词：三维对比增强磁共振血管成像子宫动脉栓塞术倾斜角度球管伦理审查委员会介入放射学优化 MR血管成像

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Effect of inoculum size and antibiotics on bacterial traveling bands in a thin microchannel defined by optical adhesive

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Microsystems & Nanoengineering 2021年第5期7卷 41-59页

作者： Yang Liu thomas lehnert Martin A.M.Gijs Laboratory of Microsystems Ecole Polytechnique Federale de LausanneCH-1015 LausanneSwitzerland

Phenotypic diversity in bacterial flagella-induced motility leads to complex collective swimming patterns,appearing as traveling bands with transient locally enhanced cell *** bands are known to be a bacterial chemotactic response to self-generated nutrient gradients during growth in resource-limited *** this work,we studied different parameters of Escherichia coli(***)collective migration,in particular the quantity of bacteria introduced initially in a microfluidic chip(inoculum size)and their exposure to antibiotics(ampicillin,ciprofloxacin,and gentamicin).We developed a hybrid polymer-glass chip with an intermediate optical adhesive layer featuring the microfluidic channel,enabling high-content imaging of the migration dynamics in a single bacterial layer,*** bacteria are confined in a quasi-2D space that is fully observable with a high-magnification microscope ***-chip bacterial motility and traveling band analysis was performed based on individual bacterial trajectories by means of custom-developed *** of swimming speed,tumble bias and effective diffusion properties allowed the assessment of phenotypic heterogeneity,resulting in variations in transient cell density distributions and swimming *** found that incubation of isogeneic£coli with different inoculum sizes eventually generated different swimming phenotype ***,incubation with antimicrobials promoted bacterial chemotaxis in specific cases,despite growth ***,*** filamentation in the presence of antibiotics was assessed,and the impact on motility was *** propose that the observation of traveling bands can be explored as an alternative for fast antimicrobial susceptibility testing.

关键词： traveling collective transient

Force microscopy of the Caenorhabditis elegans embryonic eggshell

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Microsystems & Nanoengineering 2020年第1期6卷 1029-1039页

作者： Roger Krenger Jan t.Burri thomas lehnert Bradley J.Nelson Martin A.M.Gijs Laboratory of Microsystems Ecole Polytechnique Federale de Lausanne1015 LausanneSwitzerland Multi-Scale Robotics Laboratory ETH ZurichZürich 8092Switzerland

Assays focusing on emerging biological phenomena in an animal’s life can be performed during *** the embryo of Caenorhabditis elegans has been extensively studied,its biomechanical properties are largely ***,we demonstrate that cellular force microscopy(CFM),a recently developed technique that combines micro-indentation with high resolution force sensing approaching that of atomic force microscopy,can be successfully applied to *** *** performed,for the first time,a quantitative study of the mechanical properties of the eggshell of living *** embryos and demonstrate the capability of the system to detect alterations of its mechanical parameters and shell defects upon chemical *** addition to investigating natural eggshells,we applied different eggshell treatments,i.e.,exposure to sodium hypochlorite and chitinase solutions,respectively,that selectively modified the multilayer eggshell structure,in order to evaluate the impact of the different layers on the mechanical integrity of the *** element method simulations based on a simple embryo model were used to extract characteristic eggshell parameters from the experimental micro-indentation force-displacement *** found a strong correlation between the severity of the chemical treatment and the rigidity of the ***,our results showed,in contrast to previous assumptions,that short bleach treatments not only selectively remove the outermost vitelline layer of the eggshell,but also significantly degenerate the underlying chitin layer,which is primarily responsible for the mechanical stability of the egg.

关键词： remove rigidity approaching

On the Doctrinal and Institutional Organization of a Buddhist Commentarial Project Commissioned by Ming taizu

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Fudan Journal of the Humanities and Social Sciences 2014年第2期7卷 147-170页

作者： Martin lehnert Department of Asian Studies Ludwig Maximilian University of Munich Japan CenterOettingenstr.67 80538 Munich Germany

A commentarial project commissioned by emperor Ming taizu （r.1368-1398） in 1377, which was dedicated to the Prajnaparamita-hrdaya-sutra, theVajracchedika-prajfiaparamita-sutra, and the Lankavatara-sutra, defined coherent standards of Buddhist learning by reference to early Chinese translations and Indian commentarial literature. In order to provide a clear-cut basis for the education of the clergy, its selective and reductive approach aimed at a standardization of doctrine and homogenization of terminology. Production and purport of the commentarial project are documented in a series of paratexts, prefaces, colophons, production notes and memoranda. they indicate a strong consciousness for the institutional, ideological and political aspects of the production procedure and its benefits for controlling the formation of Buddhist authority. Such decidedly functional under- standing of the institutional aspects of the production of exegesis leads to the conclusion that besides the normativity of doctrinal knowledge the main objective was to establish a basis for institutional integration of those who are in the privileged position to select whom they allow to assume authority, and to define the selection standards as well.

关键词： Ming taizu Buddhist exegesis Institutionalization