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    • 74. 发明申请
    • SENSE OPTIMIZED MRI RF COIL DESIGNED WITH A TARGET FIELD METHOD
    • 感应优化的MRI射频线圈设计与目标场方法
    • WO2006124234A2
    • 2006-11-23
    • PCT/US2006016167
    • 2006-04-26
    • UNIV CALIFORNIAMUFTULER LUTFICHEN GANGNALCIOGLU ORHAN
    • MUFTULER LUTFICHEN GANGNALCIOGLU ORHAN
    • G01V3/00H01Q17/00
    • G01R33/3415G01R33/34007Y10T29/49Y10T29/49018Y10T29/4902Y10T29/49071
    • An MRI RF coil that is optimized for SENSE imaging is used in a method where the surface current density distribution on a coil former was calculated to maximize the SNR sense within a volume of interest. An analytic relationship was formulated between the SNR sense and surface current density on the coil former. The SNR at pixel p in a SENSE-MR image, SNR sense , p , is inversely proportional to the g- factor. The g-factor was formulated in terms of the B1 distribution of the coils. By specifying the geometry of the desired coil former and using a finite element mesh, the surface current distribution was calculated to maximize the SNR sense , by minimizing (1 /SNR sense ) in the volume of interest using a least squares procedure. A simple two-coil array was tested and phantom images were collected. The results show that the new coil design method yielded better uniformity and SNR compared to standard coils.
    • 针对SENSE成像优化的MRI RF线圈用于其中计算线圈架上的表面电流密度分布以使感兴趣的体积内的SNR <>的最大值的方法。 在线圈形成器之间的SNR&lt; S&gt;和表面电流密度之间就形成了分析关系。 SENSE-MR图像中的像素p处的SNR与SNR因子成反比。 g因子是根据线圈的B1分布来制定的。 通过指定所需的线圈形成器的几何形状并使用有限元网格,通过最小化(1 / SNR )来计算表面电流分布以使SNR最大化, 使用最小二乘法处理感兴趣的体积。 测试简单的双线圈阵列并收集幻影图像。 结果表明,与标准线圈相比,新的线圈设计方法产生更好的均匀性和SNR。
    • 76. 发明申请
    • ISOLATION OF BINDING PROTEINS WITH HIGH AFFINITY TO LIGANDS
    • 分离具有高亲和力的结合蛋白
    • WO0234886A3
    • 2003-07-31
    • PCT/US0146795
    • 2001-10-26
    • UNIV TEXASCHEN GANGHAYHURST ANDREWTHOMAS JEFFREY GIVERSON BRENT LGEORGIOU GEORGE
    • CHEN GANGHAYHURST ANDREWTHOMAS JEFFREY GIVERSON BRENT LGEORGIOU GEORGE
    • C12N15/09C12N15/10C12N5/00
    • C12N15/1034
    • The invention overcomes the deficiencies of the prior art by providing a rapid approach for isolating binding proteins capable of binding small molecules and peptides via "display-less" library screening. In the technique, libraries of candidate binding proteins, such as antibody sequences, are expressed in soluble form in the periplasmic space of gram negative bacteria, such as Escherichia coli, and are mixed with a labeled ligand. In clones expressing recombinant polypeptides with affinity for the ligand, the concentration of the labeled ligand bound to the binding protein is increased and allows the cells to be isolated from the rest of the library. Where fluorescent labeling of the target ligand is used, cells may be isolated by fluorescence activated cell sorting (FACS). The approach is more rapid than prior art methods and avoids problems associated with the surface-expression of ligand fusion proteins employed with phage display.
    • 本发明通过提供通过“无显示”文库筛选分离能够结合小分子和肽的结合蛋白的快速方法来克服现有技术的缺陷。 在该技术中,候选结合蛋白(例如抗体序列)的文库以可溶形式表达在革兰氏阴性细菌如大肠杆菌的周质空间中,并与标记的配体混合。 在表达对配体具有亲和性的重组多肽的克隆中,与结合蛋白结合的标记配体的浓度增加,并允许细胞与文库的其余部分分离。 当使用靶配体的荧光标记时,可以通过荧光激活细胞分选(FACS)分离细胞。 该方法比现有技术方法更快速,并避免与噬菌体展示所用配体融合蛋白的表面表达相关的问题。