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226 条记录 (耗时 0.026 秒)

    Enhanced substrate imaging by reversible binding to a paramagnetic complex
    1.
    发明申请
    Enhanced substrate imaging by reversible binding to a paramagnetic complex 失效
    通过可逆结合顺磁性复合物增强底物成像

    公开(公告)号：US20040258618A1

    公开(公告)日：2004-12-23

    申请号：US10492231

    申请日：2004-08-16

    发明人： Enzo Terreno ,  Silvio Aime ,  Mauro Botta

    IPC分类号： A61B005/055

    CPC分类号： A61K49/085 ,  A61K49/103 ,  C07D257/02

    摘要： The invention relates to a method for the Magnetic Resonance Imaging and Magnetic Resonance Spectroscopy Imaging of a substrate molecule different from water wherein the NMR signal is enhanced by a reversible binding of the substrate molecule to a paramagnetic chelate complex, as well as to the use of a paramagnetic chelate complex in said method and the pharmaceutical composition for use therein.

    摘要翻译： 本发明涉及一种用于不同于水的底物分子的磁共振成像和磁共振光谱成像的方法，其中NMR信号通过底物分子与顺磁螯合物的可逆结合而增强，以及使用 所述方法中的顺磁性螯合络合物和用于其中的药物组合物。

    Magnetic resonance imaging method and apparatus with spatial coding using readout segmentation
    2.
    发明申请
    Magnetic resonance imaging method and apparatus with spatial coding using readout segmentation 失效
    磁共振成像方法和使用读出分割的空间编码的装置

    公开(公告)号：US20040257078A1

    公开(公告)日：2004-12-23

    申请号：US10830511

    申请日：2004-04-23

    发明人： David Andrew Porter

    IPC分类号： G01V003/00 ,  A61B005/055

    CPC分类号： G01R33/5615

    摘要： In a method and apparatus for magnet resonance imaging, and RF excitation pulse is emitted for the excitation of spins in an object to be examined and simultaneously a slice-selection gradient is activated during the RF excitation pulse, a pulse series of refocusing pulses is emitted, a slice-selection gradient pulse is activated during each refocusing pulse, and alternating readout gradient pulse series are activated, each series being in the pulse between two refocusing pulses, with a de-phasing pulse being activated immediately before each readout gradient pulse series and a re-phasing pulse being activated immediately after the each readout gradient pulse series such that a corresponding offset is produced in the readout direction so that each readout gradient pulse series scans a part of the k-matrix in the kx direction in a serpentine-like manner, with the serpentine-like scanning of each partial section being implemented by activating short phase-coding gradient pulses during each zero point of the corresponding readout-gradient pulse series.

    摘要翻译： 在用于磁共振成像的方法和装置中，发射RF激发脉冲用于激发被检查物体中的自旋，并且同时在RF激励脉冲期间激活切片选择梯度，发射脉冲序列的重聚焦脉冲 在每个再聚焦脉冲期间激活切片选择梯度脉冲，并激活交替读出梯度脉冲序列，每个串联在两个重聚焦脉冲之间的脉冲中，在每个读出梯度脉冲序列之前立即激活去相位脉冲， 在每个读出梯度脉冲序列之后立即激活重定相脉冲，使得在读出方向上产生相应的偏移，使得每个读出梯度脉冲串以蛇形似的方式扫描kx方向上的一部分k矩阵 方式，通过在ea期间激活短相位编码梯度脉冲来实现每个部分部分的蛇形样扫描 ch对应读出梯度脉冲序列的零点。

    Active MRI intramyocardial injection catheter with a deflectable distal section
    4.
    发明申请
    Active MRI intramyocardial injection catheter with a deflectable distal section 有权
    主动MRI心肌内注射导管具有可偏转的远端部分

    公开(公告)号：US20040220470A1

    公开(公告)日：2004-11-04

    申请号：US10769994

    申请日：2004-02-03

    申请人： THE JOHN HOPKINS UNIVERSITY

    发明人： Parag V. Karmarkar ,  Ergin Atalar

    IPC分类号： A61B005/055

    CPC分类号： G01R33/287 ,  A61M25/0127 ,  A61M25/0136 ,  A61M25/0138 ,  A61M25/0147 ,  G01R33/34084

    摘要： A deflectable tip catheter that is safe and effective for use in a magnetic resonance imaging environment. The deflectable tip catheter is configured such that it includes a built-in antenna, such as a loopless antenna or a loop antenna. The built-in antenna permits the deflectable tip catheter to be actively tracked and/or visualized. Depending upon the specific configuration of the deflectable tip catheter, the catheter may be tracked and/or visualized as a single unit, it may be tracked and/or visualized separate and independent of other components or instruments associated with the catheter, such as pull wires, injection needles, surgical instruments, and the like. The catheters described herein include injection type catheters and/or guidance type catheters.

    Method and apparatus for performing neuroimaging
    6.
    发明申请
    Method and apparatus for performing neuroimaging 失效
    用于执行神经成像的方法和装置

    公开(公告)号：US20040204642A1

    公开(公告)日：2004-10-14

    申请号：US10409625

    申请日：2003-04-08

    申请人： INSIGHT NEUROIMAGING SYSTEMS, LLC

    发明人： Craig F. Ferris ,  Arthur C. Allard ,  Reinhold Ludwig ,  Gene Bogdanov

    IPC分类号： A61B005/055

    CPC分类号： A61B5/0555

    摘要： In one aspect, a restraining assembly for an awake animal within a magnetic resonance imaging (MRI) device is provided and includes a body restrainer having a first part and a second part that hold a body of the awake animal therebetween. The assembly is of a dual coil design in that it has a volume coil for generating an excitation RF signal and an RF surface coil for receiving an RF response from the animal. The assembly further includes components that serve to restrain movements of the animal, thereby eliminating motion artifacts during the MRI procedure. For example, the assembly preferably includes an adjustable hip holder that has a first section that seats against and applies a restraining force to a buttocks/hip area of the animal and a second section that is adjustably coupled to a pivoting member that is attached to the first section of the body restrainer such that the hip holder is adjustable in both a longitudinal direction along a length of the body restrainer and an up/down direction within the body restrainer between the first and second parts thereof. The pivoting member having features that permit the hip holder to be locked in a desired location so that a sufficient restraining force is applied the animal.

    摘要翻译： 一方面，提供了一种用于在磁共振成像（MRI）装置内的清醒动物的约束组件，并且包括具有第一部分和第二部分的身体限制器，该第一部分和第二部分将醒来动物的身体保持在其间。 组件是双线圈设计，其具有用于产生激励RF信号的体积线圈和用于从动物接收RF响应的RF表面线圈。 组件还包括用于抑制动物运动的组件，从而消除MRI过程期间的运动伪影。 例如，组件优选地包括可调节的髋部保持器，其具有抵靠并施加约束力到动物的臀部/臀部区域的第一部分，以及可调节地联接到枢转构件的第二部分， 身体限制器的第一部分，使得臀部保持器沿着身体限制器的长度在纵向方向上可调节，并且在身体限制器之间的上/下方向之间可调节其第一和第二部分之间。 枢转构件具有允许臀部保持器锁定在期望位置的特征，使得动物施加足够的约束力。

    Mr method for the examination of a cyclically changing object
    7.
    发明申请
    Mr method for the examination of a cyclically changing object 审中-公开
    检查周期性变化对象的方法

    公开(公告)号：US20040186372A1

    公开(公告)日：2004-09-23

    申请号：US10297862

    申请日：2002-12-10

    发明人： Peter Boernert ,  Peter Koken

    IPC分类号： A61B005/055

    CPC分类号： G01R33/5676

    摘要： The invention relates to an MR method for examining a cyclically changing object where a first and a second sequence act on the object during a cycle. When very many cycles are required so as to complete the second MR data set, a two-dimensional image can be reconstructed from the MR data of the first sequence so as to utilize such a two-dimensional image for monitoring purposes or as a navigator image.

    摘要翻译： 本发明涉及一种用于检查周期性变化的物体的MR方法，其中在循环期间第一和第二序列作用在物体上。 当需要非常多的周期以完成第二MR数据集时，可以从第一序列的MR数据重建二维图像，以便利用这样的二维图像进行监视或作为导航图像 。

    MRT user interface allowing accurate slice planning based on a distortion-conrrected MRT overview image
    8.
    发明申请
    MRT user interface allowing accurate slice planning based on a distortion-conrrected MRT overview image 有权
    MRT用户界面允许基于失真调整的MRT概述图像进行精确的切片计划

    公开(公告)号：US20040147835A1

    公开(公告)日：2004-07-29

    申请号：US10712438

    申请日：2003-11-13

    发明人： Berthold Kiefer ,  Robert Krieg

    IPC分类号： A61B005/055

    CPC分类号： G01R33/56518 ,  G01R33/546

    摘要： In a processing system for an MRT apparatus, a user interface as presented that permits an operator to undertake a graphical measurement planning based on already-recorded, corrected MRT overview images, the correction having been carried out by the processing system on the basis of stored data accessible by the processing system relating to non-linearities of the gradient system of the MRT apparatus being used. The processor system, in the user interface, automatically graphically demarcates the area of the corrected MRT overview image in which a positioning of additional slices to be measured will lead to a deviation of the desired slices, from the actual slices in a subsequent scan from the ear of the corrected MRT overview image in which a positioning of additional slices to be measured will not lead to such a deviation of the desired slices.