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    • 72. 发明申请
    • MULTI-MODALITY BREAST IMAGING
    • 多模态乳腺成像
    • US20120114213A1
    • 2012-05-10
    • US13384265
    • 2010-07-12
    • Thomas BuelowMichael GrassKlaus Erhard
    • Thomas BuelowMichael GrassKlaus Erhard
    • G06K9/00
    • G06T7/0032G06T7/344G06T2207/10088G06T2207/10116G06T2207/30068
    • A system for multi-modality breast imaging comprises a first shape model constructing sub-system (1) for constructing a first shape model of the breast as represented in a first image (9), in which the breast has its natural shape, a second shape model constructing sub-system (2) for constructing a second shape model of the breast as represented in a second image (10), in which the breast is compressed by using a compression paddle, and a deformation estimating sub-system (3) for estimating a volumetric deformation field (12) defining a mapping between the first image (9) and the second image (10) on the basis of the shape models and an elastic deformation model (11) of the breast, the deformation estimating sub-system (3) being arranged to estimate the volumetric deformation field (12) on the basis of a first tissue surface of the breast in the first image (9) and a second tissue surface of the breast in the second image (10).
    • 一种用于多模式乳房成像的系统,包括构成子系统(1)的第一形状模型,用于构建乳房的第一形状模型,如第一图像(9)所示,其中乳房具有其自然形状,第二形状模型 用于构造乳房的第二形状模型的形状模型构造子系统(2),如第二图像(10)所示,其中通过使用压缩桨来压缩乳房,以及变形估计子系统(3) 用于基于形状模型和乳房的弹性变形模型(11)来估计限定第一图像(9)和第二图像(10)之间的映射的体积变形场(12),变形估计子步骤 系统(3)被布置为基于第一图像(9)中的乳房的第一组织表面和第二图像(10)中的乳房的第二组织表面来估计体积变形场(12)。
    • 74. 发明申请
    • CORONARY ARTERY SELECTIVE CALCIUM ASSIGNMENT USING LOW DOSE CALCIUM SCORING SCANS
    • 冠状动脉选择性钙分配使用低剂量钙分析扫描
    • US20110243412A1
    • 2011-10-06
    • US12599044
    • 2008-05-05
    • Michael GrassJens Von Berg
    • Michael GrassJens Von Berg
    • G06K9/00
    • A61B6/504A61B6/481A61B6/503
    • It is described a method for coronary artery selective calcium assignment by computed tomography, wherein the method comprising the steps of performing a low x-ray dose cardiac calcium scoring scan, obtaining a data set of said cardiac calcium scoring scan, generating reconstructed images from the data set of said cardiac calcium scoring scan, analyzing the reconstructed images for segmented calcium deposits, deriving a data set of calcification from the analysis, wherein a cardiac model is adapted to the reconstructed image such that segmented calcium deposits can be assigned to specific areas of the heart. Further a device (100) for performing a method for coronary artery selective calcium assignment by computed tomography according to the inventive method is described, wherein the device (100) comprises a CT unit (10) for performing a low x-ray dose cardiac calcium scoring scan; an acquisition unit (20) for obtaining a data set of said cardiac calcium scoring scan; a generation unit (30) for generating reconstructed images from the data set of said cardiac calcium scoring scan; an analyzing unit (40) for analyzing the reconstructed images for segmented calcium deposits; a deriving unit (50) for deriving a data set of calcification from the analysis.
    • 描述了通过计算机断层摄影术进行冠状动脉选择性钙分配的方法,其中所述方法包括以下步骤:执行低X射线剂量心脏钙评分扫描,获得所述心脏钙评分扫描的数据集,从 所述心脏钙评分扫描的数据集,分析分割钙沉积物的重建图像,从分析导出钙化数据集,其中心脏模型适应于重建图像,使得分割的钙沉积物可以分配给 心脏 此外,描述了根据本发明的方法通过计算机断层摄影执行冠状动脉选择性钙分配方法的装置(100),其中所述装置(100)包括用于执行低x射线剂量心脏钙的CT单元(10) 得分扫描; 获取单元(20),用于获取所述心脏钙评分扫描的数据集; 用于从所述心脏钙评分扫描的数据集中产生重建图像的生成单元(30); 分析单元(40),用于分析用于分割的钙沉积物的重建图像; 用于从分析中导出钙化数据集的导出单元(50)。
    • 76. 发明授权
    • Computed tomography method with helical relative movement and conical beam bundle
    • 计算机断层扫描方法与螺旋相对运动和锥形束束
    • US07889901B2
    • 2011-02-15
    • US11815606
    • 2006-01-31
    • Claas BontusMichael GrassThomas Koehler
    • Claas BontusMichael GrassThomas Koehler
    • G06K9/00A61B6/00
    • G06T11/006A61B6/027G06T2211/421
    • The invention relates to a computed tomography method in which a periodically moving object is irradiated by a conical beam bundle. An nPi-relative movement is generated between a radiation source, which generates the conical beam bundle, and the object. During the nPi-relative movement, measured values are acquired, which depend on the intensity in the beam bundle on the other side of the object and from these measured values filter values are determined, which are divided into different groups. The filter values of at least one group are weighted in dependence on the movement of the object, wherein, when filter values of several groups are weighted, filter values of different groups are weighted differently in dependence on the movement of the object. Finally, a CT image of the object is reconstructed from the filter values.
    • 本发明涉及一种计算机断层摄影方法,其中周期性移动的物体被锥形束束照射。 在产生锥形束束的辐射源和物体之间产生nPi相对运动。 在nPi相对运动期间,获取测量值,其取决于物体另一侧上的束束中的强度,并且从这些测量值确定滤波器值,其被划分为不同的组。 根据对象的移动对至少一个组的滤波器值进行加权,其中当对多个组的滤波器值进行加权时,根据对象的移动对不同组的滤波器值进行加权不同。 最后,从过滤器值重建对象的CT图像。
    • 77. 发明申请
    • MODEL BASED SELF-POSITIONING PATIENT TABLE FOR X-RAY SYSTEMS
    • 基于模型的X射线系统自定位患者表
    • US20110002444A1
    • 2011-01-06
    • US12920333
    • 2009-03-09
    • Holger SchmittUdo Van StevendaalPeter ForthmannMichael Grass
    • Holger SchmittUdo Van StevendaalPeter ForthmannMichael Grass
    • A61B6/04G01N23/04
    • A61B6/0457A61B6/4441A61B6/465A61B6/469A61B6/488A61B6/547
    • A System (24) for positioning a carrier (9) of an object (10) within a field of view of an imaging unit (7b), the system comprising: an imaging receiving interface unit (14) for receiving image data (22) representing an image (9) of the object (10) from an imaging unit (7b), an object components position determination unit (15) for determining object components (11, 12) position data (25) representing positions of components (11, 12) of the object (10), a memory (16) with anatomic model data stored therein, the anatomic model data representing anatomic model (9*) component positions of anatomic model components (11*, 12*) of an atomic model (10*), a matching unit (17) designed to match object components (11, 12) positions and anatomic model components (11*, 12*) positions based on object components position data and anatomic model data, an input receiving unit (19) for receiving input data (23) representing a selected component (11) of interest, a positioning planning unit (18) for determining position shift data representing a direction and a distance by which the carrier (8) is to be shifted, considering the input data, anatomic model data and object components position data, an interface (20) to a positioning system (21) for shifting the carrier (8) based on the position shift data (27).
    • 一种用于将物体(10)的载体(9)定位在成像单元(7b)的视野内的系统(24),所述系统包括:用于接收图像数据(22)的成像接收接口单元(14) 从成像单元(7b)表示对象(10)的图像(9);对象分量位置确定单元(15),用于确定表示分量(11,12)的位置的对象分量(11,12) (10)的存储器(16),存储有解剖模型数据的存储器(16),所述解剖模型数据表示原子模型的解剖模型组件(11 *,12 *)的解剖模型(9 *)组件位置 10 *),匹配单元(17),其被设计为基于对象分量位置数据和解剖模型数据来匹配对象分量(11,12)位置和解剖模型分量(11 *,12 *)位置;输入接收单元 ),用于接收表示所选择的所选择的组件(11)的输入数据(23);定位计划单元(18) 考虑到输入数据,解剖模型数据和对象分量位置数据,表示载体(8)要移动的方向和距离的位置移位数据,到定位系统(21)的接口(20),用于移位 载体(8)基于位置偏移数据(27)。
    • 78. 发明授权
    • Reconstruction method for computer tomography and computer tomograph
    • 计算机断层扫描和计算机断层扫描重建方法
    • US07856079B2
    • 2010-12-21
    • US11719304
    • 2005-11-07
    • Tim NielsenMichael Grass
    • Tim NielsenMichael Grass
    • A61B6/00
    • G06T11/006A61B6/027G06T2211/424
    • It is an object of the invention to provide spiral computer tomography which has a high image quality. It relates to a reconstruction method for computer tomography of the heart, wherein the image is reconstructed from a data component of recordings of a partial detector path of a detector device and from a data component of recordings of a full detector path of the detector device, and to a computer tomograph having a beam source, a drive arrangement for driving the beam source in a spiral path around an object, a detector device for recording the radiation from the beam source which passes at least partially through the object, and a control device for reconstructing data components of a partial detector path and a full detector path.
    • 本发明的目的是提供具有高图像质量的螺旋计算机断层摄影。 本发明涉及用于心脏计算机断层摄影的重建方法,其中根据检测器装置的部分检测器路径的记录的数据分量和检测器装置的完整检测器路径的记录的数据分量来重建图像, 以及具有光束源的计算机断层摄影机,用于以围绕物体的螺旋路径驱动光束源的驱动装置,用于记录来自至少部分穿过物体的光束源的辐射的检测器装置,以及控制装置 用于重构部分检测器路径和完整检测器路径的数据分量。
    • 79. 发明申请
    • APPARATUS FOR DETERMINING A PARAMETER OF A MOVING OBJECT
    • 用于确定移动对象参数的装置
    • US20100266182A1
    • 2010-10-21
    • US12741397
    • 2008-11-04
    • Michael GrassAndy Ziegler
    • Michael GrassAndy Ziegler
    • G06K9/00
    • G06T7/251G06T7/246G06T2207/10076G06T2207/10081G06T2207/20004G06T2207/20092G06T2207/30048
    • The present invention relates to an apparatus for determining a parameter of a moving object, wherein the apparatus comprises an adaptive model providing unit (12) for providing an adaptive model of the object. The user can define the region of the adaptive model by a user interface (13). The apparatus further comprises an image data set providing unit (14) for providing a spatially and temporally dependent image data set of the moving object and an adaptation unit (15) for adapting at least a defined region of the adaptive model to the spatially and temporally dependent image data set for determining a spatially and temporally dependence of the defined region. The parameter of the moving object is determined depending on the spatially and temporally dependence of the defined region by a parameter determining unit (16).
    • 本发明涉及一种用于确定移动物体的参数的装置,其中,所述装置包括用于提供对象的自适应模型的自适应模型提供单元(12)。 用户可以通过用户界面(13)来定义自适应模型的区域。 该装置还包括用于提供移动物体的空间和时间上依赖的图像数据集的图像数据集提供单元(14),以及适配单元(15),用于至少将自适应模型的定义区域适应于空间和时间上 用于确定所定义区域的空间和时间依赖性的依赖图像数据集。 取决于由参数确定单元(16)定义的区域的空间和时间依赖性来确定移动对象的参数。