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751篇 您的检索式:作者名="Willi A"
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1Free-breathing radial volumetric interpolated breathhold examination vs breath-hold cartesian volumetric interpolated breath-hold examination magnetic resonance imaging of the liver at 1.5T显示文摘AIM: To compare breath-hold cartesian volumetric interpolated breath-hold examination(cVIBE) and freebreathing radial VIBE(rVIBE) and determine whether rVIBE could replace cVIBE in routine liver magnetic resonance imaging(MRI).METHODS: In this prospective study, 15 consecutive patients scheduled for routine MRI of the abdomen underwent pre- and post-contrast breath-hold cVIBE imaging(19 s acquisition time) and free-breathing rVIBE imaging(111 s acquisition time) on a 1.5T Siemens scanner. Three radiologists with 2, 4, and 8 years post-fellowship experience in abdominal imaging evaluated all images. The radiologists were blinded to the sequence types, which were presented in a random order for each patient. For each sequence, the radiologists scored the cVIBE and rVIBE images for liver edge sharpness, hepatic vessel clarity, presence of artifacts, lesion conspicuity, fat saturation, and overall image quality using a five-point scale. RESULTS: Compared to rVIBE, cVIBE yielded significantly(P < 0.001) higher scores for liver edge sharpness(mean score, 3.87 vs 3.37), hepatic-vessel clarity(3.71 vs 3.18), artifacts(3.74 vs 3.06), lesion conspicuity(3.81 vs 3.2), and overall image quality(3.91 vs 3.24). cVIBE and rVIBE did not significantly differ in quality of fat saturation(4.12 vs 4.03, P = 0.17). The inter-observer variability with respect to differences between rVIBE and cVIBE scores was close to zero compared to random error and inter-patient variation. Quality of rVIBE images was rated as acceptable for all parameters. CONCLUSION: rVIBE cannot replace cVIBE in routine liver MRI. At 1.5T, free-breathing rVIBE yields acceptable, although slightly inferior image quality compared to breath-hold cVIBE.Sireesha Yedururi HyunSeon C Kang Wei Wei Nicolaus A Wagner-Bartak Leonardo P Marcal R Jason Stafford Brandy J Willis Janio Szklaruk 2016World Journal of Radiology2016,8,7:9
2HPV E6/E7 mRNA原位杂交诊断宫颈低级别鳞状上皮内病变显示文摘宫颈低级别鳞状上皮内病变(LSIL)[亦称宫颈上皮内瘤变,1级(CIN1)]可带来相当大的诊断挑战,并且与观察者之间重复性较差和过诊断有关。此外,一些辅助性检测项目,如p16免疫组化检查在解析LSIL与正常/反应性鳞状上皮病变的差异作用不大。人类乳头状瘤病毒(HPV)RNA原位杂交(ISH)检测在LSIL的诊断中可能是一种较好的辅助诊断方法,但目前这方面尚没有较大宗病例的研究。解建军 张仁亚 Mills A M Coppock J D Willis B C 2018临床与实验病理学杂志2018,34,11:2
3Human enamel thickness and ENAM polymorphism显示文摘The tooth enamel development gene, enamelin(ENAM), showed evidence of positive selection during a genome-wide scan of human and primate DNA for signs of adaptive evolution. The current study examined the hypothesis that a single-nucleotide polymorphism(SNP) C14625T(rs7671281) in the ENAM gene identified in the genome-wide scan is associated with a change in enamel phenotype. African Americans were selected as the target population, as they have been reported to have a target SNP frequency of approximately 50%, whereas non-Africans are predicted to have a 96% SNP frequency. Digital radiographs and DNA samples from 244 teeth in 133 subjects were analysed, and enamel thickness was assessed in relation to SNP status,controlling for age, sex, tooth number and crown length. Crown length was found to increase with molar number, and females were found to have thicker enamel. Teeth with larger crowns also had thicker enamel, and older subjects had thinner enamel.Linear regression and generalized estimating equations were used to investigate the relationship between enamel thickness of the mandibular molars and ENAM SNP status; enamel in subjects with the derived allele was significantly thinner(P = 0.040)when the results were controlled for sex, age, tooth number and crown length. The derived allele demonstrated a recessive effect on the phenotype. The data indicate that thinner dental enamel is associated with the derived ENAM genotype. This is the first direct evidence of a dental gene implicated in human adaptive evolution as having a phenotypic effect on an oral structure.Diane M Daubert Joanna L Kelley Yuriy G Udod Carolina Habor Chris G Kleist Ilona K Furman Igor N Tikonov Willie J Swanson Frank A Roberts 2016International Journal of Oral Science2016,8,2:2
4A review of Leishmaniasis in Eastern Africa显示文摘The review presents the epidemiology of leishmaniasis in the Eastern Africa region. We searched PUB MED and MEDLINE with several key words-namely,'leishmaniasis';'cutaneous','diffuse cutaneous','mucosal', and'visceral leishmaniasis'; 'kala azar'and 'post kala azar dermal leishmaniasis'-for recent clinical and basic science articles related to leishmaniasis in countries in the Eastern Africa region. Poverty, wars, conflicts and migration have significantly aggravated leishmaniases in Eastern Africa. Of particular concern is the increasing incidence of Leishmania-HIV co-infection in Ethiopia where 20~40% of the persons affected by visceral leishmaniasis are HIV-co-infected. Sudan has the highest prevalence rate of post kala-azar dermal leishmaniasis(PKDL) in the world, a skin complication of visceral leishmaniasis(VL) that mainly afflicts children below age ten. In view of its spread to previously non-endemic areas and an increase in imported cases, leishmaniasis in Eastern Africa should be considered a health emergency.Peter K.Ngure Albert Kimutai Zipporah W.Ng'ang'a Geoffrey Rukunga Willy K.Tonui 2009Journal of Nanjing Medical University2009,23,2:2
5Gas-phase production of carbon single-walled nanotubes from carbon monoxide via Hipco process:a parametric study显示文摘Michael J Bronikowski Peter A Willis Daniel T Colbert 2001J Vac Sci Technol2001,19,4:1
6Fast root MUSIC algorithm显示文摘Ren Q S Willis A J 1997Electronics Letters1997,33,6:1
7The estimation of carbohydrates in plant extracts by anthrone显示文摘YEMM E W WILLIS A J 1954The Biochemical Journal1954,57,3:1
8Comparison of ring artifact correction methods for flat-detector CT显示文摘Daniel Prell Yiannis Kyriakou Willi A Kalender 2009Physics in Medicine and Biology2009,,12:1
9Rapid detection of influenza A and B viruses in clinical specimens by LightCycler real-time RT-PCR显示文摘Smith A B Mock V Melear R Colarusso P Willis D E 2003J Clin Virol2003,28,:1
10Endogenous on cogenic K-ras (G12D) stimulates proliferation and widespread neoplastic and developmental defects 显示文摘Tuveson D A Shaw A T Willis N A 2004Cancer Cell2004,5,4:1
11Current approaches to the revegetafion and reclamation of metalliferous mine wastes显示文摘Ton:loft G M Baker A J M Willis A J 2000Chem- osphere2000,41,:1
12Effects of Hypoxia and Toxicant Exposure on Phosphoarginine,Intracellular PH, and Free Mg^3+ in Abalone as Measured by ^31P-NMR显示文摘Shofer S L Willis J A Tjeerdema R S 1997Comp Biochem Physiol1997,118,4:1
13The implications of structured 5' untranslated regions on translation and disease显示文摘Pickering B M Willis A E 2005Semin Cell Dev Biol2005,16,1:1
14The elastic coefficients of the theory of consolidation显示文摘BIOT M A WILLIS D G 1957ASME J Appl Mech1957,24,:1
15Current approaches to the revegetation and reclamation of metalliferous mine wastes 显示文摘Tordoff G M Baker A J M Willis A J 2000Chemosphere2000,41,2000:1
16Assessment of season of release and size at release on recapture rates of hatchery-reared red drum显示文摘Willis S A Falls W W Dennis C W 1995American Fisheries Society Symposium1995,15,:1
17The elastic coefficients of the theory of consolidation显示文摘BIOT M A WILLIS D G 1957Journal of Applied Mechanics1957,24,4:1
18The estimation of carbohydrate in plant extracts by anthrone显示文摘Yemm E W Willis A J 1954Biochemical Journal1954,57,1:1
19Four-wave mixing in the diamond configuration in an atomic vapor显示文摘Willis R T Becerra F E Orozco L A 2009Phys Rev A2009,79,03:1
20Spectroscopic characterization of the surface of iron oxide nanocrystals显示文摘Willis A L Turro N J O'Brien S 2005Chem Mater2005,17,24:1
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