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    • 1. 发明申请
    • SYSTEM AND METHOD FOR THE GUIDANCE OF A CATHETER IN ELECTROPHYSIOLOGIC INTERVENTIONS
    • 用于指导电生理干预中导管的系统和方法
    • WO2006079965A3
    • 2006-10-12
    • PCT/IB2006050239
    • 2006-01-23
    • KONINKL PHILIPS ELECTRONICS NVPHILIPS INTELLECTUAL PROPERTYWEESE JUERGENMOLLUS SABINEECK KAIBREDNO JOERG
    • WEESE JUERGENMOLLUS SABINEECK KAIBREDNO JOERG
    • A61B6/12A61B5/044A61B5/05
    • A61B5/042A61B6/12A61B6/4441A61B6/487A61B6/503A61B6/5288
    • The invention relates to a system and a method for the guidance of a catheter (20) with an electrode (21) in an electrophysiological procedure. A sequence of images (I1, ... Ik, ...) of the catheter (20) and of a resting reference catheter (30) is generated with an X-ray device (10) and stored together with the associated electrographic recordings from the electrodes (21, 31). A reference image (Ik) may then be selected from said sequence that corresponds to a desired electrographic pattern (Ek). In a next step, the positions (T, R) of the catheters (20, 30) are localized on the reference image (Ik), wherein the position (R) of the reference catheter (30) can be identified with the position of this catheter (30) on an actual image (I). Thus it is possible to determine on the actual image also a target position (T') for the catheter (20) that corresponds to the position (T) of this catheter (20) on the reference image (Ik). Said target position (T) may finally be indicated on a monitor (60) to assist the guidance of the catheter (20) to a desired location.
    • 本发明涉及用于在电生理学过程中引导具有电极(21)的导管(20)的系统和方法。 利用X射线装置(10)产生导管(20)和静止参考导管(30)的一系列图像(I 1,...,I k,...),并将其与相关联的电子照相记录 来自电极(21,31)。 然后可以从对应于期望的电子照相图案(Ek)的所述序列中选择参考图像(Ik)。 在下一个步骤中,导管(20,30)的位置(T,R)位于参考图像(Ik)上,其中参考导管(30)的位置(R)可以用 该导管(30)位于实际图像(I)上。 因此,有可能在实际图像上还确定与参考图像(Ik)上的该导管(20)的位置(T)对应的导管(20)的目标位置(T')。 所述目标位置(T)最终可以在监视器(60)上指示以辅助将导管(20)引导至期望的位置。
    • 10. 发明申请
    • MODEL-BASED DETERMINATION OF THE CONTRACTION STATUS OF A PERIODICALLY CONTRACTING OBJECT
    • 基于模型的周期性约束对象收缩状态的确定
    • WO2008001258A2
    • 2008-01-03
    • PCT/IB2007052322
    • 2007-06-18
    • PHILIPS INTELLECTUAL PROPERTYKONINKL PHILIPS ELECTRONICS NVGROTH ALEXANDRAECK KAI
    • GROTH ALEXANDRAECK KAI
    • G06T7/60A61B6/12G06T7/00
    • G06T7/0012A61B5/042A61B5/7289A61B6/12A61B6/503A61B6/5217G06T7/62G06T2207/30048
    • It is described a model-based estimation of the current contraction status (S) of a periodically contracting object such as a beating heart. Thereby, a characteristic feature that is directly related to the contraction status (S) is extracted from a current image (340) and subsequently compared to a model that gives the contraction status (S) of the heart in dependence on the characteristic feature. Thereby, an appropriate patient- individual model may be obtained e.g. from an ECG gated pre-interventional data set. A potential characteristic feature is the distance between two arbitrary reference catheters (341a, 341b, 342a, 342b) that are usually in a fix known standard position during a whole electrophysiological intervention. The knowledge about the current contraction status may be used to combine the current image with other images depicting the object in the same contraction status. Thereby, image elements, which depend on the contraction status and which are not viewable in the current image, may be made visible by overlaying different images depicting the object in one and the same contraction status.
    • 它描述了对周期性收缩对象(例如跳动心脏)的当前收缩状态(S)的基于模型的估计。 由此,从当前图像(340)中提取与收缩状态(S)直接相关的特征特征,并随后将其与根据特征特征给出心脏的收缩状态(S)的模型进行比较。 由此,可以获得适当的患者个体模型,例如, 来自心电门控的预干预数据集。 潜在的特征是两个任意参考导管(341a,341b,342a,342b)之间的距离,这两个参考导管在整个电生理干预期间通常处于固定的已知标准位置。 关于当前收缩状态的知识可用于将当前图像与描绘处于相同收缩状态的对象的其他图像组合。 由此,可以通过将描绘对象的不同图像叠加在同一收缩状态中而使得取决于收缩状态并且在当前图像中不可见的图像元素变得可见。