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MRI黑血技术对肺循环高压病人评估的诊断和预后判断价值

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国际医学放射学杂志 2012年第3期 296-296页

作者： a.j.swift S.Rajaram H.Marshall R.Condliffe D.Capener C.Hill 文小检 Academic Unit of Radiology University of SheffieldC FloorRoyal Hallamshire HospitalGlossop RoadSheffieldS10 2JUK

目的双翻转恢复(DIR)"黑血"MRI能抑制流动血液的信号,流动缓慢的血液信号抑制不完全即导致肺血液流动伪影(PFA)。本研究旨在测试PFA评分系统对肺循环高压(PH)病人混合人群的诊断效能和预后判断价值。方法233例病人因疑诊PH在检查48h内... 详细信息

目的双翻转恢复(DIR)"黑血"MRI能抑制流动血液的信号,流动缓慢的血液信号抑制不完全即导致肺血液流动伪影(PFA)。本研究旨在测试PFA评分系统对肺循环高压(PH)病人混合人群的诊断效能和预后判断价值。方法233例病人因疑诊PH在检查48h内行右心导管插管(RHC)术,

关键词：肺高压肺动脉高压 MR 存活肺动脉影像诊断

CT为基础的肺叶通气与3He-MR成像通气测量的比较

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国际医学放射学杂志 2016年第2期 197-197页

作者： B.A.Tahir C.V.Holsbeke R.H.Ireland a.j.swift F.C.Horn H.Mar-shall 韩宁 Academic Units of Academic Radiology University of SheffieldC FloorRoyal Hallamshire Hospital INSIGNEO Institute of In-silico Medicine

摘要目的比较吸气相及呼气相肺叶通气CT数据与超极化3He-MR成像上直接测量的肺通气数据,利用与3HeMR成像相同屏气时段所获得的1H-MR成像来配准多模态影像。材料与方法本研究经国家研究伦理委员会批准,并获得病人书面同意。30例哮喘病人... 详细信息

摘要目的比较吸气相及呼气相肺叶通气CT数据与超极化3He-MR成像上直接测量的肺通气数据,利用与3HeMR成像相同屏气时段所获得的1H-MR成像来配准多模态影像。材料与方法本研究经国家研究伦理委员会批准,并获得病人书面同意。30例哮喘病人在总肺容量及功能余气量的状态下屏气行CT检查。在功能余气量加上1 L的肺容量状态下相同屏气时段获得3He-MR和1H-MR影像。通过主

关键词：肺叶 MR 通气量 CT 左肺上叶

An algorithm for family screening for coeliac disease

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World journal of Gastroenterology 2006年第48期12卷 7805-7809页

作者： jocelyn S Fraser Alistair L King H julia Ellis Simon j Moodie Ingvar Bjarnason jill swift Paul j Ciclitira Division of Nutritional Sciences King's College London United Kingdom Division of Nutritional Sciences King’s College London United Kingdom

AIM: To assess the level of undiagnosed coeliac disease (CD) in relatives of patients affected by the condition. METHODS: We collected blood from 914 relatives of probands. We screened these individuals by ELISA for IgA and IgG tTG antibodies, confirming any positive IgA tTG results with an IgA EMA and looked for evidence of IgA deficiency in those who were IgG tTG positive alone, and performed IgG1 EMA in these individuals. We undertook HLA typing where positive screening was found, and this confirmed a strong prevalence of HLA- DQ2 in the coeliac population. Follow-up small intestinal biopsy was undertaken in cases with positive serological screening, wherever possible. RESULTS:Use of this serological screening algorithm revealed a prevalence of undiagnosed CD in 5%-6% of first degree relatives of probands. CONCLUSION:Our data suggests that first degree relatives of individuals with CD should be screened for this condition.

关键词： Coeliac disease Screening Endomysialantibody Familial study IgA deficiency Prevalence Tissue transglutaminase

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Gulliver's travels

First-principles calculations of hyperfine interaction,binding energy,and quadrupole coupling for shallow donors in silicon

作者： jonathan swift edited by Albert j. Rivero.

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npj Computational Materials 2020年第1期6卷 186-194页

作者： Michael W.swift Hartwin Peelaers Sai Mu john j.L.Morton Chris G.Van de Walle Department of Physics University of CaliforniaSanta BarbaraCA 93106-9530USA US Naval Research Laboratory Center for Computational Materials ScienceWashingtonDC 20375USA Materials Department University of CaliforniaSanta BarbaraCA 93106-5050USA Department of Physics and Astronomy University of KansasLawrenceKansas 66045USA Department of Electronic and Electrical Engineering UCLLondonWC1E 7JEUK

Spin qubits based on shallow donors in silicon are a promising quantum information technology with enormous potential scalability due to the existence of robust silicon-processing ***,the most accurate theories of donor electronic structure lack predictive power because of their reliance on empirical fitting parameters,while predictive ab initio methods have so far been lacking in accuracy due to size of the donor wavefunction compared to typical simulation *** show that density functional theory with hybrid and traditional functionals working in tandem can bridge this *** first-principles approach allows remarkable accuracy in binding energies(67 meV for bismuth and 54 meV for arsenic)without the use of empirical *** also obtain reasonable hyperfine parameters(1263 MHz for Bi and 133 MHz for As)and superhyperfine *** demonstrate the importance of a predictive model by showing that hydrostatic strain has much larger effect on the hyperfine structure than predicted by effective mass theory,and by elucidating the underlying mechanisms through symmetry analysis of the shallow donor charge density.

关键词： density donor hyperfine

Does the Redshift Distribution of swift Long GRBs Trace the Star-Formation Rate?

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International journal of Astronomy and Astrophysics 2024年第1期14卷 20-44页

作者： Ali M. Hasan Walid j. Azzam Department of Physics College of Science University of Bahrain Sakhir Bahrain

Gamma-ray bursts (GRBs) are extremely powerful explosions that have been traditionally classified into two categories: long bursts (LGRBs) with an observed duration T90 > 2 s, and short bursts (SGRBs) with an observed duration T90 T90 is the time interval during which 90% of the fluence is detected. LGRBs are believed to emanate from the core-collapse of massive stars, while SGRBs are believed to result from the merging of two compact objects, like two neutron stars. Because LGRBs are produced by the violent death of massive stars, we expect that their redshift distribution should trace the star-formation rate (SFR). The purpose of our study is to investigate the extent to which the redshift distribution of LGRBs follows and reflects the SFR. We use a sample of 370 LGRBs taken from the swift catalog, and we investigate different models for the LGRB redshift distribution. We also carry out Monte Carlo simulations to check the consistency of our results. Our results indicate that the SFR can describe the LGRB redshift distribution well for high redshift bursts, but it needs an evolution term to fit the distribution well at low redshift.

关键词： Gamma-Ray Bursts Redshift Distribution Star-Formation Rate

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格列佛游记

格列佛游记

作者： j.·斯威夫特(j. swift)

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格利佛游记

格利佛游记

Flash-basedFPGA令可携式医疗设备可靠度大增

作者： (英)j.·斯威夫特(j. swift)

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中国电子商情 2013年第11期 37-39页

作者： Stephen j.swift 美高森美通信和医疗产品部

呵携式医疗产品逐渐获得市场青睐，如何开发出更小尺寸、更低功耗与高可靠度的产品已成为产品设计人员首要课题。产品设计人员通过高效能的Flash-basedFPGA元件，将呵实现微型化、高安全性与低功耗等特性，进而扩大可携式医疗设备应用... 详细信息

呵携式医疗产品逐渐获得市场青睐，如何开发出更小尺寸、更低功耗与高可靠度的产品已成为产品设计人员首要课题。产品设计人员通过高效能的Flash-basedFPGA元件，将呵实现微型化、高安全性与低功耗等特性，进而扩大可携式医疗设备应用市场商机。可携式医疗设备的系统设计工程师正面临剑许多问题，其中包括缩小体积、增加功能性和延长可植入人体设备所用电池的寿命，同时还要藉由最佳的叮靠性和功效来确保设备安全无虞。

关键词：医疗设备可靠度 FPGA 医疗产品设计人员市场商机设备安全微型化

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