Wang chengbo (30 risultati)

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Condizione: New. Connects a robust theoretical foundation with real-world application efforts spanning various critical assets, including tracks, bridges, and roads.Leverages the latest developments in technology and infrastructure management best practices.

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Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Revision with unchanged content. COPD and asthma have significant morbidity and mortality. Hyperpolarized (HP) 3He Diffusion MRI has been used to assess lung diseases. The results correlated well with histology, but the diffusion time for previous methods is limited to the order of milliseconds under 1.5 T. New MR methods were developed to measure HP 3He diffusion over the long-time scale (LTS: diffusion time on the order of seconds) in human lungs and were used to investigate COPD and asthma. The basic equations were developed, numerical simulation was performed, and measurements were made in phantoms. Measurements in healthy subjects confirmed that 3He diffusion still strongly depended on the diffusion time in LTS and the ADC decreased significantly. Reproducibility, anisotropy and dependence on parameters were characterized. Experiments in patients with COPD suggested that LTS diffusion was more sensitive to early COPD changes than short-time-scale diffusion. Measurements in patients with severe asthma revealed large regional elevations in LTS ADC maps while the changes in STS were smaller. And there was a good correlation between LTS ADC maps and areas of lowdensity 'air-trapping' seen by CT. 192 pp. Englisch.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Revision with unchanged content. COPD and asthma have significant morbidity and mortality. Hyperpolarized (HP) 3He Diffusion MRI has been used to assess lung diseases. The results correlated well with histology, but the diffusion time for previous methods is limited to the order of milliseconds under 1.5 T. New MR methods were developed to measure HP 3He diffusion over the long-time scale (LTS: diffusion time on the order of seconds) in human lungs and were used to investigate COPD and asthma. The basic equations were developed, numerical simulation was performed, and measurements were made in phantoms. Measurements in healthy subjects confirmed that 3He diffusion still strongly depended on the diffusion time in LTS and the ADC decreased significantly. Reproducibility, anisotropy and dependence on parameters were characterized. Experiments in patients with COPD suggested that LTS diffusion was more sensitive to early COPD changes than short-time-scale diffusion. Measurements in patients with severe asthma revealed large regional elevations in LTS ADC maps while the changes in STS were smaller. And there was a good correlation between LTS ADC maps and areas of lowdensity 'air-trapping' seen by CT.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Wang Chengbois an assistant professor of Radiology at theUniversity of Virginia, Charlottesville, VA, USA.Born in China, a bachelor and a master fromTsinghua University in Beijing, China, and adoctorate from University of Virginia. A.…

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Taschenbuch. Condizione: Neu. Hyperpolarized Helium-3 Diffusion | Magnetic Resonance Imaging in Human Lungs | Chengbo Wang | Taschenbuch | 192 S. | Englisch | 2012 | AV Akademikerverlag | EAN 9783639438185 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu Print on Demand.…

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Revision with unchanged content. COPD and asthma have significant morbidity and mortality. Hyperpolarized (HP) 3He Diffusion MRI has been used to assess lung diseases. The results correlated well with histology, but the diffusion time for previous methods is limited to the order of milliseconds under 1.5 T. New MR methods were developed to measure HP 3He diffusion over the long-time scale (LTS: diffusion time on the order of seconds) in human lungs and were used to investigate COPD and asthma. The basic equations were developed, numerical simulation was performed, and measurements were made in phantoms. Measurements in healthy subjects confirmed that 3He diffusion still strongly depended on the diffusion time in LTS and the ADC decreased significantly. Reproducibility, anisotropy and dependence on parameters were characterized. Experiments in patients with COPD suggested that LTS diffusion was more sensitive to early COPD changes than short-time-scale diffusion. Measurements in patients with severe asthma revealed large regional elevations in LTS ADC maps while the changes in STS were smaller. And there was a good correlation between LTS ADC maps and areas of lowdensity 'air-trapping' seen by CT.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 192 pp. Englisch.…

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Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Offers insightful comments and concrete guidance on digital twins in TIEMReveals how digital twins are transforming infrastructure engineering & managementShows readers how to optimize transportation infrastructure with digital twins.…

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