Responsive MRI contrast agents
    2.
    发明授权
    Responsive MRI contrast agents 有权
    响应性MRI造影剂

    公开(公告)号:US08734761B2

    公开(公告)日:2014-05-27

    申请号:US11912694

    申请日:2006-04-21

    IPC分类号: A61B5/055

    摘要: The invention provides MRI contrast agents which provide a high sensitivity and which have an optimised body retention time. These agents enable the mapping of the local pH, temperature, oxygen concentration or other metabolites in a patient's body by the use of Chemical Exchange Saturation Transfer (CEST). Particularly pH and temperature mapping are useful for the detection of small cancer lesions and localized inflammation respectively.

    摘要翻译: 本发明提供了提供高灵敏度并且具有优化的身体保留时间的MRI造影剂。 这些试剂可以通过使用化学交换饱和转移(CEST)来测定患者体内的局部pH,温度,氧浓度或其他代谢物。 特别是pH和温度映射可用于分别检测小癌病变和局部炎症。

    Method for Using Cest Contrast Agents in Mri
    6.
    发明申请
    Method for Using Cest Contrast Agents in Mri 有权
    在Mri中使用Cest对比剂的方法

    公开(公告)号:US20080188738A1

    公开(公告)日:2008-08-07

    申请号:US11912691

    申请日:2006-04-21

    IPC分类号: A61B5/055

    CPC分类号: G01R33/5601 G01R33/4804

    摘要: The invention relates to a method for mapping of a physico-chemical parameter such as pH, temperature, pO2 or metabolite concentration using a chemical exchange saturation transfer contrast agent in Magnetic Resonance Imaging. This method is a modification of the known ratiometric method and may be used with agents having only one exchangeable entity pool, e.g. proton pool, by applying two different RF frequencies for pre-saturation of the contrast agent.

    摘要翻译: 本发明涉及使用化学交换饱和转移造影剂在磁共振成像中映射物理化学参数如pH,温度,pO 2或代谢物浓度的方法。 该方法是已知比例法的修改,并且可以与仅具有一个可交换实体池的代理一起使用。 质子池,通过应用两种不同的RF频率来预处理造影剂。

    Elimination of contrast agent concentration dependency in MRI
    7.
    发明授权
    Elimination of contrast agent concentration dependency in MRI 有权
    消除MRI中造影剂浓度依赖性

    公开(公告)号:US08463358B2

    公开(公告)日:2013-06-11

    申请号:US12303453

    申请日:2007-06-08

    IPC分类号: A61B5/05

    摘要: A method for MRI imaging to obtain information about a local physiochemical parameter after administration to a patient of a contrast agent including at least one non-responsive contrast enhancing entity that does not occur naturally in a human body and at least one responsive contrast enhancing entity attached to or mixed with the non-responsive contrast enhancing entity. By using such non-responsive contrast enhancing entities, a value for the physicochemical parameter can be obtained by acquiring only three images, providing a method which will be easier to apply in a clinical routine, since it will be faster and less sensitive to motion or flow artifacts.

    摘要翻译: 一种用于MRI成像的方法,用于在给予造影剂的患者之后获得关于局部生理化学参数的信息,所述造影剂包括至少一个在人体内不天然存在的至少一个非反应性对比增强实体和至少一个响应性对比增强实体 与无反应对比度增强实体混合或混合。 通过使用这种无反应的对比度增强实体,可以通过仅获取三个图像来获得物理化学参数的值,提供将更容易应用于临床程序中的方法,因为它将对运动更快和更不敏感, 流动人造物。

    ELIMINATION OF CONTRAST AGENT CONCENTRATION DEPENDENCY IN MRI
    8.
    发明申请
    ELIMINATION OF CONTRAST AGENT CONCENTRATION DEPENDENCY IN MRI 有权
    消除MRI中的对比剂浓度依赖性

    公开(公告)号:US20090196830A1

    公开(公告)日:2009-08-06

    申请号:US12303453

    申请日:2007-06-08

    IPC分类号: A61K49/06

    摘要: The present invention relates to a method for MRI imaging to obtain information about a local physiochemical parameter after administration to a patient of a contrast agent comprising at least one non-responsive contrast enhancing entity that does not occur naturally in a human body and at least one responsive contrast enhancing entity attached to or mixed with the non-responsive contrast enhancing entity. By using such non-responsive contrast enhancing entities, a value for the physicochemical parameter can be obtained by acquiring only three images through which the method according to the present invention will be easier to apply in clinical routine since it will be faster and less sensitive to motion or flow artefacts.

    摘要翻译: 本发明涉及一种用于MRI成像的方法,用于在给予造影剂的患者之后获得关于局部生理化学参数的信息,所述造影剂包括至少一个在人体内不自然发生的至少一个非反应性对比增强实体,以及至少一个 响应对比度增强实体附加于非混响对比度增强实体或与非响应对比增强实体混合。 通过使用这种无反应的对比度增强实体,可以通过仅获取三个图像来获得物理化学参数的值,通过该三个图像,根据本发明的方法将更容易应用于临床常规中,因为它将更快和更不敏感 运动或流动文物。

    Distinguishing bound and unbound contrast agents using magnetic resonance
    9.
    发明授权
    Distinguishing bound and unbound contrast agents using magnetic resonance 失效
    使用磁共振区分绑定和未结合的造影剂

    公开(公告)号:US07667460B2

    公开(公告)日:2010-02-23

    申请号:US12094270

    申请日:2006-11-22

    IPC分类号: G01V3/00

    摘要: Magnetic resonance monitoring of a target (30) uses the detected magnetic resonance to determine movement such as diffusion of contrast agent relative to the object, and uses the movement to discriminate (50, 60) a part of the contrast agent which is bound to the target, from the rest of the contrast agent. The need for clearing agents can be avoided or reduced, and hence imaging is instantaneous. A “stationary spin map” of the object can be formed by comparing the movements in the different directions, and determining if the differences between them are less than a given threshold. Determining isotropic movement in this way for a number of locations on the object allows the map to be generated.

    摘要翻译: 目标(30)的磁共振监测使用检测到的磁共振来确定造影剂相对于物体的扩散的运动,并且使用该运动来区分(50,60)一部分与 目标,从其余的造影剂。 可以避免或减少对清除剂的需要,因此成像是瞬时的。 可以通过比较不同方向的运动并确定它们之间的差异是否小于给定的阈值来形成物体的“固定自旋图”。 以这种方式确定对象上多个位置的各向同性运动允许生成地图。

    Distinguishing Bound and Unbound Contrast Agents Using Magnetic Resonance
    10.
    发明申请
    Distinguishing Bound and Unbound Contrast Agents Using Magnetic Resonance 失效
    使用磁共振识别绑定和未绑定的对比剂

    公开(公告)号:US20080258726A1

    公开(公告)日:2008-10-23

    申请号:US12094270

    申请日:2006-11-22

    IPC分类号: G01R33/563

    摘要: Magnetic resonance monitoring of a target (30) uses the detected magnetic resonance to determine movement such as diffusion of contrast agent relative to the object, and uses the movement to discriminate (50, 60) a part of the contrast agent which is bound to the target, from the rest of the contrast agent. The need for clearing agents can be avoided or reduced, and hence imaging is instantaneous. A “stationary spin map” of the object can be formed by comparing the movements in the different directions, and determining if the differences between them are less than a given threshold. Determining isotropic movement in this way for a number of locations on the object allows the map to be generated.

    摘要翻译: 目标(30)的磁共振监测使用检测到的磁共振来确定造影剂相对于物体的扩散的运动,并且使用该运动来区分(50,60)一部分与 目标,从其余的造影剂。 可以避免或减少对清除剂的需要,因此成像是瞬时的。 可以通过比较不同方向的运动并确定它们之间的差异是否小于给定的阈值来形成物体的“固定自旋图”。 以这种方式确定对象上多个位置的各向同性运动允许生成地图。