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    • 33. 发明申请
    • Electrostatic Aerosol Concentrator
    • 静电气雾浓缩器
    • US20110277632A1
    • 2011-11-17
    • US11831613
    • 2007-07-31
    • Kapil PantShivshakar SundaramYi Wang
    • Kapil PantShivshakar SundaramYi Wang
    • B03C3/45B03C3/00
    • B03C3/68B03C3/025B03C3/06B03C3/41B03C3/49
    • Disclosed is an electrostatic aerosol concentrator for the concentration of aerosol particles and their collection for subsequent analysis. The concentrator comprises an airflow chamber that includes alternately energized and grounded electrode elements that work in concert to impart radial inward motion to charged aerosol particles and focusing them toward an enriched aerosol outlet. If desired, filtered air inlets may be used to provide a sheath of aerosol-free air along the chamber periphery and prevent deposition of particles onto electrode surfaces. Aerosol particles entering the airflow chamber may carry a positive or negative charge naturally, or a charge may be induced on the particles using a charging section located upstream of the aerosol inlet. Natural or induced charges on the aerosol particles may be used to selectively concentrate subpopulations of aerosol particles from a mixture of particles. For example, bacterial spores or aerosolized viruses may be selectively enriched without concentrating other aerosol particles. The particles of interest are focused and collected at an aerosol rich outlet in a small air volume, while the majority of the airflow, stripped of particles of interest, is purged to the atmosphere through an aerosol lean outlet.
    • 公开了一种用于浓缩气溶胶颗粒的静电气溶胶浓缩器及其收集用于随后的分析。 集中器包括气流室,其包括交替地供电和接地的电极元件,其一致地工作以向带电气溶胶颗粒进行径向向内运动并将它们聚焦到富集的气溶胶出口。 如果需要,可以使用过滤的空气入口来沿着室周边提供无气溶胶空气的护套,并防止颗粒沉积到电极表面上。 进入气流室的气溶胶颗粒可以自然携带正电荷或负电荷,或者可以使用位于气溶胶入口上游的充电部分在颗粒上诱导电荷。 气雾剂颗粒上的天然或诱导电荷可用于从颗粒混合物中选择性地浓缩气溶胶颗粒的亚群。 例如,细菌孢子或气雾化病毒可以选择性富集而不浓缩其它气溶胶颗粒。 将感兴趣的颗粒聚焦并收集在小气泡体积的气溶胶浓缩出口处,而大部分气流被汽提的感兴趣的颗粒通过气溶胶倾倒出口被吹扫到大气中。
    • 35. 发明申请
    • TOOL FOR ACCURATE QUANTIFICATION IN MOLECULAR MRI
    • 用于精确定量分析MRI的工具
    • US20110044524A1
    • 2011-02-24
    • US12990148
    • 2009-04-28
    • Yi WangLudovic de RochefortBryan KresslerTian LiuPascal Spincemaille
    • Yi WangLudovic de RochefortBryan KresslerTian LiuPascal Spincemaille
    • G06K9/00
    • G01R33/54G01R33/5601G01R33/5608G01R33/563
    • A method and apparatus is provided for magnetic source magnetic resonance imaging. The method includes collecting energy signals from an object, providing additional information of characteristics of the object, and generating the image of the object from the energy signals and from the additional information such that the image includes a representation of a quantitative estimation of the characteristics, e.g a quantitative estimation of magnetic susceptibility. The additional information may comprise predetermined characteristics of the object, a magnitude image generated from the object, or magnetic signals collected from different relative orientations between the object and the imaging system. The image is generated by an inversion operation based on the collected signals and the additional information. The inversion operation minimizes a cost function obtained by combining the data extracted from the collected signals and the additional information of the object. Additionally, the image is used to detect a number of diagnostic features including microbleeds, contract agents and the like.
    • 提供了用于磁源磁共振成像的方法和装置。 该方法包括从对象收集能量信号,提供对象的特征的附加信息,以及从能量信号和附加信息生成对象的图像,使得图像包括特征的定量估计的表示, 例如磁化率的定量估计。 附加信息可以包括对象的预定特征,从对象产生的幅度图像,或从物体和成像系统之间的不同相对取向收集的磁信号。 通过基于收集的信号和附加信息的反转操作来生成图像。 反转操作最小化通过组合从所收集的信号提取的数据和对象的附加信息而获得的成本函数。 此外,该图像用于检测多个诊断特征,包括微出血,合同代理等。