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    • 35. 发明授权
    • Method for identifying and locating markers in a 3D volume data set
    • 用于识别和定位3D体积数据集中的标记的方法
    • US06359960B1
    • 2002-03-19
    • US09630968
    • 2000-08-02
    • Eric WahlUwe WeberNorbert RahnRainer Graumann
    • Eric WahlUwe WeberNorbert RahnRainer Graumann
    • A61B603
    • G06T7/66A61B6/12G06T7/70G06T2207/30016
    • In a method for automatically determining coordinates, relative to a reference coordinate system, of markers contained in a 3D volume data set of a subject provided with markers imaged in 2D projections of the 3D volume data set are detected, the centers of gravity of the imaged markers are determined, and back projection straight lines through the markers are established. The intersection points of the back projection straight lines with each other are identified, or the points with the smallest distance from one another on different back projection straight lines are determined if the back projection lines arc skewed. Spatially limited areas are identified, which contain an accumulation of intersection points of back projection straight lines or an accumulation of points with the smallest distance from one another. The coordinates of the centers of gravity of these spatially limited areas are calculated and are used as the coordinates for the respective markers.
    • 在用于自动确定相对于参考坐标系的坐标的方法中,检测包含在设置有3D体积数据集的2D投影中的标记的受试者的3D体积数据集中的标记的坐标,所成像的重心 确定标记,建立通过标记的背投直线。 识别背投直线的交点,或者如果背投影线歪斜,则确定在不同背投直线上彼此之间具有最小距离的点。 识别空间有限的区域,其包含背投影直线的交叉点的累积或彼此具有最小距离的点的累积。 计算这些空间受限区域的重心的坐标,并将其用作相应标记的坐标。
    • 38. 发明授权
    • Method for registering and merging medical image data
    • 用于注册和合并医学图像数据的方法
    • US08244064B2
    • 2012-08-14
    • US11043464
    • 2005-01-26
    • Jan BoeseBenno HeiglNorbert Rahn
    • Jan BoeseBenno HeiglNorbert Rahn
    • G06K9/32
    • A61B5/1127A61B5/721A61B6/032A61B6/527A61B6/583G06F19/00G06T7/30G06T2207/30004
    • The present invention relates to a method for the registration and superimposition of image data when taking serial radiographs in medical imaging, wherein a plurality of image data sets for a region of a patient (17) that is being investigated are constructed at time intervals using an imaging system (1) and are referenced with a first image data set for the region that is being investigated that was constructed previously using said imaging system (1). In the above method, a location system (2) is used during the production of serial radiographs constantly, or at least at a respective proximity in time to the construction of individual data sets, to determine a current spatial position of the region being investigated in a reference system that is firmly connected to the imaging system (1), whereby in the construction of the first image data set, a first spatial position of the region that is being investigated is recorded. In the construction of some or all further image data sets, the respective current spatial position of the region that is being investigated is determined and an image content of each first image data set is geometrically adapted on the basis of the difference between the first and the current spatial position, such that compensation is made for a different spatial position of the region that is being investigated. The geometrically adapted first image data set or an image data set derived therefrom, or an image data set that is positionally connected thereto by registration is then displayed superimposed with the respective further image data set.
    • 本发明涉及一种用于在医学成像中拍摄连续摄影时对图像数据进行配准和叠加的方法,其中,对于正在研究的患者(17)的区域的多个图像数据组以时间间隔使用 成像系统(1),并且被使用先前使用所述成像系统(1)构造的正被研究的区域的第一图像数据集参考。 在上述方法中,在串行X射线照相制作期间,或者至少在各个相邻的时间内接近单个数据集的构造,使用定位系统(2)来确定正被调查的区域的当前空间位置 牢固地连接到成像系统(1)的参考系统,由此在第一图像数据组的构造中记录正被调查的区域的第一空间位置。 在构建一些或所有其他图像数据集时,确定正在研究的区域的相应当前空间位置,并且基于第一和第二图像数据组之间的差异来对每个第一图像数据集的图像内容进行几何适配。 当前的空间位置,使得对正被调查的区域的不同空间位置进行补偿。 然后,将几何适应的第一图像数据集或从其导出的图像数据集或通过登记与其位置连接的图像数据组叠加显示相应的另外的图像数据集。
    • 40. 发明授权
    • Method and apparatus for representing myocardial tissues in different states of damage
    • 用于表示不同损伤状态的心肌组织的方法和装置
    • US07939093B2
    • 2011-05-10
    • US11890400
    • 2007-08-06
    • Matthias JohnStefan LautenschlägerNorbert Rahn
    • Matthias JohnStefan LautenschlägerNorbert Rahn
    • A61B5/05
    • A61B6/504A61B5/0275A61B6/032A61B6/481A61B6/503A61B6/507
    • The invention relates to a method for differentially representing myocardial tissue in different states of damage, comprising the following steps: administering a myocardium-suitable contrast agent to a patient under examination; entering at least one patient-specific parameter affecting the speed of uptake by and elimination from the myocardium of said contrast agent; calculating a point in time after administration of the contrast agent at which a difference between a contrast agent content in necrotic myocardial tissue and a contrast agent content in non-necrotic myocardial tissue attains a maximum value, on the basis of the at least one patient-specific parameter, and carrying out, at the point in time calculated, a late-phase CT scan for accentuation of necrotic myocardial tissue compared to non-necrotic myocardial tissue. The invention likewise relates to apparatus, in particular for carrying out the method.
    • 本发明涉及用于差异代表不同损伤状态的心肌组织的方法,包括以下步骤:向被检查的患者施用适合心肌的造影剂; 输入至少一个影响所述造影剂的心肌的摄取速度和消除速度的患者特异性参数; 计算施用造影剂之后的时间点,其中所述造影剂中的坏死心肌组织中的造影剂含量与非坏死性心肌组织中的造影剂含量之间的差异达到最大值,基于至少一个患者 - 具体参数,并且在计算的时间点进行与非坏死心肌组织相比的坏死心肌组织的晚期CT扫描。 本发明同样涉及装置,特别是用于实施该方法。