NON-SPHERICAL CONTRAST AGENTS FOR CEST MRI BASED ON BULK MAGNETIC SUSCEPTIBILITY EFFECT
    8.
    发明申请
    NON-SPHERICAL CONTRAST AGENTS FOR CEST MRI BASED ON BULK MAGNETIC SUSCEPTIBILITY EFFECT 审中-公开
    非球形对比剂基于大块磁性可靠性影响的CEST MRI

    公开(公告)号:US20100254913A1

    公开(公告)日:2010-10-07

    申请号:US12744494

    申请日:2008-11-21

    IPC分类号: A61K49/10 A61K49/06

    CPC分类号: A61K49/1812 A61K49/1815

    摘要: In magnetic resonance imaging (MRI) based on chemical exchange-dependent saturation transfer (CEST), a novel carrier for CEST contrast agents is provided. The carrier is non-spherical and comprises a semipermeable shell, wherein the shell comprises a paramagnetic compound. The shell encloses a cavitycomprising an MR analyte, wherein the semipermeable shell allows diffusion of the MR analyte. The CEST effect is based on the 5 bulk magnetic susceptibility effect caused by the anisotropy of the carrier. This leads to a versatile carrier that does not require interaction of the analyte with a paramgnetic chemical shift reagent.

    摘要翻译: 在基于化学交换依赖性饱和转移(CEST)的磁共振成像(MRI)中,提供了一种用于CEST造影剂的新载体。 载体是非球形的并且包含半透性壳,其中壳包含顺磁性化合物。 壳体包围一个包含MR分析物的空腔,其中半透膜允许MR分析物的扩散。 CEST效应基于由载体的各向异性引起的5体积磁化率效应。 这导致通用载体,其不需要分析物与辅助化学位移试剂的相互作用。

    Elastomeric stamp, patterning method using such a stamp and method for producing such a stamp
    9.
    发明申请
    Elastomeric stamp, patterning method using such a stamp and method for producing such a stamp 审中-公开
    弹性印模,使用这种印模的图案化方法和制造这种印章的方法

    公开(公告)号:US20070145632A1

    公开(公告)日:2007-06-28

    申请号:US10575797

    申请日:2004-10-07

    IPC分类号: B29C33/40

    摘要: An elastomeric stamp (10) for printing a pattern on a substrate (500) with an ink (520) is at least partially formed from a first material such as PDMS. The stamp comprises a first surface (12) in a first plane, a second surface (14) in a second plane and a third surface (16) extending from the first surface (12) to the second surface (14). The first surface (12) typically forms to the contact surface of a protruding feature of the stamp (10), whereas the third surface (16) typically forms the edge of such a feature. The first surface (12) comprises a barrier layer (22) being substantially impermeable to the ink (520). Optionally, the second surface (14) may carry a further barrier layer (24) to suppress gas phase diffusion of the ink (520). In contrast, the third surface (16) is permeable to the ink (520). Consequently, a stamp (10) is obtained that is highly suitable for edge transfer lithography type patterning. The first material of the stamp serves as an ink reservoir, thus reducing the re-inking frequency of the stamp, and the layer (22) prevents unwanted diffusion of the ink (520) to the areas of the substrate (500) into contact with the stamp (10), thus 20 improving the feature definition on the substrate surface.

    摘要翻译: 用于用油墨(520)在基底(500)上印刷图案的弹性印模(10)至少部分地由诸如PDMS的第一材料形成。 印模包括在第一平面中的第一表面(12),在第二平面中的第二表面(14)和从第一表面(12)延伸到第二表面(14)的第三表面(16)。 第一表面(12)通常形成到印模(10)的突出特征的接触表面,而第三表面(16)通常形成这种特征的边缘。 第一表面(12)包括对油墨(520)基本不可渗透的阻挡层(22)。 可选地,第二表面(14)可携带另外的阻挡层(24)以抑制油墨(520)的气相扩散。 相比之下,第三表面(16)对墨水是可渗透的(520)。 因此,获得了非常适合于边缘转印光刻型图案化的印模(10)。 印模的第一材料用作墨水储存器,从而减小印模的再墨水频率,并且所述层(22)防止墨(520)对基板(500)的区域的不期望的扩散与基板(500)的区域接触 印模(10),从而改善了基板表面上的特征定义。

    SYNTHESIS OF HIGH-PERFORMANCE IRON OXIDE PARTICLE TRACERS FOR MAGNETIC PARTICLE IMAGING (MPI)
    10.
    发明申请
    SYNTHESIS OF HIGH-PERFORMANCE IRON OXIDE PARTICLE TRACERS FOR MAGNETIC PARTICLE IMAGING (MPI) 审中-公开
    用于磁性成像(MPI)的高性能氧化铁颗粒追踪器的合成

    公开(公告)号:US20130095043A1

    公开(公告)日:2013-04-18

    申请号:US13806864

    申请日:2011-06-21

    IPC分类号: A61J3/00

    摘要: The present invention relates to a method of forming iron oxide nanoparticles comprising the steps of (a) suspending iron oxide/hydroxide and oleic acid or a derivative thereof in a primary organic solvent; (b) increasing the temperature of the suspension by a defined rate up to a maximum of 340° C. to 500° C.; (c) aging the suspension at the maximum temperature of step (b) for about 0.5 to 6 h; (d) cooling the suspension; (e) adding a secondary organic solvent; (f) precipitating nanoparticles by adding a non-solvent and removing excess solvent; (g) dispersing said nanoparticles in said secondary organic solvent; (h) mixing the dispersion of step (g) with a solution of a polymer; and (i) optionally removing said secondary organic solvent. The present invention further relates to an iron oxide nanoparticle obtainable by the method, the additional modification, encapsulation and decoration of such nanoparticles, as well as the use of the nanoparticles as tracers for Magnetic Particle Imaging (MPI), Magnetic Particle Spectroscopy (MPS).

    摘要翻译: 本发明涉及一种形成氧化铁纳米颗粒的方法,包括以下步骤:(a)将氧化铁/氢氧化物和油酸或其衍生物悬浮在主有机溶剂中; (b)将悬浮液的温度提高至最高340℃至500℃; (c)在步骤(b)的最高温度下将悬浮液老化约0.5至6小时; (d)冷却悬浮液; (e)加入次级有机溶剂; (f)通过加入非溶剂并除去过量的溶剂使纳米颗粒沉淀; (g)将所述纳米颗粒分散在所述次级有机溶剂中; (h)将步骤(g)的分散体与聚合物溶液混合; 和(i)任选地除去所述二级有机溶剂。 本发明还涉及通过该纳米颗粒的方法,附加改性,包封和装饰获得的氧化铁纳米颗粒,以及使用纳米颗粒作为磁性粒子成像(MPI),磁性粒子光谱(MPS)的示踪剂, 。