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国际医学放射学杂志 2021年第1期44卷 113-114页

作者： d.s.gierada C.E.Rydzak M.Zei L.Rhea 李晨菲

摘要在肺癌筛查中,肺结节的分类依赖于基于CT扫描的大小测量,但是其观察者间一致性非常有限。目的比较实性肺结节的人工测得的平均直径和计算机辅助半自动测得

关键词：

在体3He肺形态成像观察早期气肿的肺泡微观结构改变

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国际医学放射学杂志 2011年第6期 584-585页

作者： J.d.Quirk B.A.Lutey d.s.gierada J.C.Woods R.M.senior s.s.Lefrak 赵静 Mallinckrodt Institute of Radiology Washington University School of Medicine4525 Scott AveCampus Box 8227St LouisMO 63110

目的利用无创性3He肺形态学成像量化吸烟者(包括在吸和曾经吸烟者)早期气肿的肺泡微观结构形态的变化,并把结果同临床诊断标准、肺功能(PFT)、低剂量CT的检查结果进行比较分析。材料与方法本研究经当地学术审

关键词：肺泡气肿形态学 PFT 吸烟者微观结构

用CT和3He-MRI在离体气道阻塞猪模型上量化残气

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国际医学放射学杂志 2010年第1期 70-71页

作者： C.salito A.Aliverti d.s.gierada G.deslee R.A.Pierce P.T.Macklem 谢胜男 department of Bioengineering Politecnico di MilanoMilanItaly

目的在猪的气道阻塞模型上使用CT特殊的气体容积测定和超极化气体氦3He-MRI来量化肺内局部的残气。材料与方法获得动物研究批准,4只猪在完成无关的心脏实验后处死,取下猪肺。在段或叶支气管内放置反向单向阀门创建

关键词： MRI 气体容积气道阻塞离体 CT

评估肺癌特征及病人预后与异常CT筛查后肺癌诊断时间之间的关系

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国际医学放射学杂志 2018年第1期 121-121页

作者： s.K.sonavane P.Pinsky J.Watts Jr d.s.gierada R.Munden s.P.singh 崔倩 department of Radiology - Cardiopulmonary section University of Alabama in Birmingham School of Medicine

摘要目的国家肺癌筛查研究(NLsT)显示低剂量CT(LdCT)筛查能够降低肺癌发生率及全因死亡率。研究NLsT中LdCT筛查肺癌的诊断时间(TTd)并评估其与癌灶特征及

关键词： CT

Flexible ultra-thin super-resolution endoscopy

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science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 171-172页

作者： George s.d.Gordon department of Electrical and Electronic Engineering University of NottinghamNottingham NG7 2RDUK

In recent years, multimode fiber(MMF) has become an important tool for high-resolution endoscopic imaging in narrow channels(e.g., in the brain via needles or inside blood vessels) due to its high mode density and fine diameter, typically stacle to widespread deployment in applications is that realistic perturbations, including bending, twisting and changes in temperature, cause unacceptable image degradation.

关键词： fiber resolution typically

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Generalized polynomial chaos expansion by reanalysis using static condensation based on substructuring

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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 819-836页

作者： d.LEE s.CHANG J.LEE department of Automotive Engineering Hanyang UniversitySeoul 04763Republic of Korea school of Mechanical Engineering Chungnam National UniversityDaejeon 34134Republic of Korea department of Mechanical Robotics and Energy EngineeringDongguk UniversitySeoul 04620Republic of Korea

This paper presents a new computational method for forward uncertainty quantification(UQ)analyses on large-scale structural systems in the presence of arbitrary and dependent random *** method consists of a generalized polynomial chaos expansion(GPCE)for statistical moment and reliability analyses associated with the stochastic output and a static reanalysis method to generate the input-output data *** the reanalysis,we employ substructuring for a structure to isolate its local regions that vary due to random *** allows for avoiding repeated computations of invariant substructures while generating the input-output data *** substructuring with static condensation further improves the computational efficiency of the reanalysis without losing ***,the GPCE with the static reanalysis method can achieve significant computational saving,thus mitigating the curse of dimensionality to some degree for UQ under high-dimensional *** numerical results obtained from a simple structure indicate that the proposed method for UQ produces accurate solutions more efficiently than the GPCE using full finite element analyses(FEAs).We also demonstrate the efficiency and scalability of the proposed method by executing UQ for a large-scale wing-box structure under ten-dimensional(all-dependent)random inputs.

关键词： forward uncertainty quantification(UQ) generalized polynomial chaos expansion(GPCE) static reanalysis method static condensation substructuring

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评估阅片者在肺癌CT筛查的随访过程中影像诊断结果的变异性

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国际医学放射学杂志 2011年第3期 291-291页

作者： s.singh P.Pinsky N.s.Fineberg d.s.gierada K.Garg 高飞 department of Radiology University of Alabama Hospitals

目的检测阅片者对于CT筛查中肺内结节灶是否变化的诊断一致性,并评估对进一步随访建议的变异性。材料与方法本实验所有对象来自国家肺部筛检试验(NLsT)

关键词：变异性结节筛查 CT

Ion heat transport in electron cyclotron resonance heated L-mode plasma on the T-10 tokamak

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Plasma science and Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIN M.R.NURGALIEV A.R.NEMETs I.A.ZEMTsOV s.d.sUNTsOV T.B.MYALTON d.s.sERGEEV N.A.sOLOVEV d.V.sARYCHEV d.V.RYJAKOV s.N.TUGARINOV N.N.NAUMENKO National Research Centre“Kurchatov Institute” Moscow 123182Russia Bauman Moscow state Technical University Moscow 105005Russia Institution“Project Center ITER” Moscow 123098Russia JsC“sOLAR” Minsk 220034Belarus

Anomalous ion heat transport is analyzed in the T-10 tokamak plasma heated with electron cyclotron resonance heating(ECRH) in second-harmonic extra-ordinary mode. Predictive modeling with empirical scaling for Ohmical heat conductivity shows that in ECRH plasmas the calculated ion temperature could be overestimated, so an increase of anomalous ion heat transport is required. To study this effect two scans are presented: over the EC resonance position and over the ECRH power. The EC resonance position varies from the high-field side to the low-field side by variation of the toroidal magnetic field. The scan over the heating power is presented with on-axis and mixed ECRH regimes. discharges with high anomalous ion heat transport are obtained in all considered regimes. In these discharges the power balance ion heat conductivity exceeds the neoclassical level by up to 10 times. The high ion heat transport regimes are distinguished by three parameters: the ratio Te/Ti, the normalized electron density gradient R/■, and the ion–ion collisionality νii~*. The combination of high Te/Ti, high νii~*, and R/■=6-10 results in values of normalized anomalous ion heat fluxes up to 10 times higher than in the low transport scenario.

关键词： tokamak L-mode electron cyclotron resonance heating ion heat transport

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国家肺癌筛检试验(NLsT)——胸部CT研究中肿瘤发现概率的多变性

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国际医学放射学杂志 2013年第6期 578-578页

作者： P.F.Pinsky d.s.gierada P.H.Nath E.Kazerooni J.Amorosa 徐翯 division of Cancer Prevention National Cancer Institute National Institutes of Health 6130 Executive BlvdBethesda MD 20892

摘要目的描述放射科医生关于肺癌筛查试验的CT研究中解释的多样性(包括假阳性和敏感性的评估),调查导致多样性的因素,以及在不同组放射科医生之间评估假阳性和

关键词：肺癌筛检试验肺肿瘤 NLsT 筛查中心放射科 CT

肺气肿和气道的定量CT评估结果与肺癌风险的相关性

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国际医学放射学杂志 2012年第1期 88-88页

作者： d.s.gierada P.Guniganti B.J.Newman M.T.dransfield P.A.Kvale d.A.Lynch 于寰 Mallinckrodt Institute of Radiology Washington University School of Medicine510 S Kingshighway BlvdBox 8131St LouisMO 63110

目的判断肺气肿和气道大小的CT定量测定值是否与筛查人群中肺癌的风险性相关。材料与方法研究获机构审查委员会批准和知情同意。对全国肺筛查试验中CT发

关键词：肺癌肺肿瘤肺气肿肺疾病气道 CT 相关性