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433篇 您的检索式:作者名="Willis P"
    题名 作者 年代 出处 被引量
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
2Comparative short-term effects of sewage sludge and its biochar on soil properties, maize growth and uptake of nutrients on a tropical clay soil in Zimbabwe显示文摘Soil application of biochar from sewage could potentially enhance carbon sequestration and close urban nutrient balances. In sub-Saharan Africa, comparative studies investigating plant growth effect and nutrients uptake on tropical soils amended with sewage sludge and its biochar are very limited. A pot experiment was conducted to investigate the effects of sewage sludge and its biochar on soil chemical properties, maize nutrient and heavy metal uptake, growth and biomass partitioning on a tropical clayey soil. The study compared three organic amendments; sewage sludge(SS), sludge biochar(SB) and their combination(SS+SB) to the unamended control and inorganic fertilizers. Organic amendments were applied at a rate of 15 t ha^(–1) for SS and SB, and 7.5 t ha^(–1) each for SS and SB. Maize growth, biomass production and nutrient uptake were significantly improved in biochar and sewage sludge amendments compared to the unamended control. Comparable results were observed with F, SS and SS+SB on maize growth at 49 d of sowing. Maize growth for SB, SS, SS+SB and F increased by 42, 53, 47, and 49%, respectively compared to the unamended control. Total biomass for SB, SS, SS+SB, and F increased by 270, 428, 329, and 429%, respectively compared with the unamended control. Biochar amendments reduced Pb, Cu and Zn uptakes by about 22% compared with sludge alone treatment in maize plants. However, there is need for future research based on the current pot experiment to determine whether the same results can be produced under field conditions.Willis Gwenzi Moreblessing Muzava Farai Mapanda Tonny P Tauro 2016Journal of Integrative Agriculture2016,15,6:9
3Rapid 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
4Optimization model for groundwater planning 显示文摘WILLIS R LIU P 1984Journal of Water Resources Planning and Management ASCE1984,110,3:1
5Crystal structure of the MHC class Ⅰhomolog MIC-A,a gammadelta T cell ligand显示文摘 Willie S T Bauer S 1999Immunity1999,10,5:1
6Loss of fragile histidine triad expression in colorectal carcinomas and premalignant lesions显示文摘Hao X P Willis J E Pretlow T G 2000Cancer Res2000,60,1:1
7Seasonal changes in the morphology of the subglacial drainage system, Haut Glacier d 'Arolla, Switzerland显示文摘Nienow P Sharp M Willis I 1998Earth Surface Processes and LandJbrms1998,23,9:1
8Functional fits to observed drop size distributions and parameterization of rain显示文摘Willis P T 1984J Atmos Sci1984,41,9:1
9Image interpolation by pixel level data-dependent triangulation显示文摘SU D WILLIS P 2004Computer Graphics Forum2004,23,2:1
10Loss of fragile histidine triad expression in colorectal carcinomas and premalignant lesions 显示文摘Hao X P Willis J E Pretlow T G 2000Cancer Res2000,60,1:1
11Cell proliferationin the post-surgical stomach ,dietary salt, and the effect of Hpylori eradication 显示文摘WILLIS P LYNCH DAF PRESCOTT R 1999Journal of Clinical Pathlology1999,52,9:1
12Phylogenetic community structure in Minnesota oak savanna is influenced by spatial extent and environmental variation 显示文摘Willis C G Halina M Lehman C Rcich P B Keen A McCarthy S Cavender-Bares J 2010Ecography2010,33,:1
13Late Permian global coal hiatus linked to 13C-depleted CO2 flux into the atmosphere during the final conaolidation of Pangea 显示文摘Faure K de Wit M J Willis J P 1995Geology1995,23,6:1
14Current practices of high and low flow oxygen therapy and humidification in UK neonatal units显示文摘Nath P Ponnusamy V Willis K 2010Pediatr Int2010,52,6:1
15Active smoking and the risk of type 2 diabetes:a systematic review and meta-analysis显示文摘Willi C Bodenmann P Ghali WA 2007JAMA2007,298,22:1
16Active terahertz metarnatetial devices显示文摘Chen H T Willie J P Joshua M O Z 2006Nature2006,444,30:1
17The influence of high altitude on fire detector test fires显示文摘Wieser D Jauch P Willi U 1997Fire Safety Journal1997,29,2:1
18Using clinical experience in discussion within problem-based learning groups 显示文摘O'NEILL P DUPLOCK A WILLIS S 2006Adv Health Sci Educ Theory Pract2006,11,4:1
19The role of mast cells in the pathogenesis of pain in chronic pancreatitis显示文摘Hoogerwerf W A Gondesen K Xiao S Y Winston J H Willis W D Pasricha P J 2005BMC Gastroenterol2005,5,:1
20Using clinical experience in discussion within problem-based learning groups显示文摘Oneill P Duplock A Willis S 2006Adv Health Sci Educ Theory Pract2006,,11:1
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