REGISTRATION OF MEDICAL IMAGES
    2.
    发明申请
    REGISTRATION OF MEDICAL IMAGES 有权
    医学图像注册

    公开(公告)号:US20160217576A1

    公开(公告)日:2016-07-28

    申请号:US14763853

    申请日:2014-10-14

    Abstract: The invention relates to a method and an image processing device (50) for the registration of two images (I1, I2) that may for example be provided by a CT scanner (10) and/or an MRI scanner (20). According to one embodiment of the invention, the images are first globally registered (GR) with a given registration algorithm using a first parameter vector (p). A user may then select a region of interest ROI, and a plurality of local registrations (LR1, . . . LRs, . . . LRn) are calculated for this ROI using the same registration algorithm but different parameter vectors (p, p, . . . p). The results of the local registrations (LR1, . . . LRs, . . . LRn) are displayed and the user can select the best local registration(s). In a final step, the selected local registration(s) (LRs) and the global registration (GR) may be merged. Additionally or alternatively, a parameter vector for a local registration in the ROI may be determined by an automatic analysis of the ROI.

    Abstract translation: 本发明涉及一种用于登记可由CT扫描器(10)和/或MRI扫描仪(20)提供的两个图像(I1,I2)的方法和图像处理装置(50)。 根据本发明的一个实施例,使用第一参数向量(p),使用给定的注册算法首先全局注册图像(GR)。 然后,用户可以选择感兴趣区域ROI,并且使用相同的注册算法但是不同的参数向量(p,p,...)来计算针对该ROI的多个本地注册(LR1,...,LRs,...,LRn) ... p)。 显示本地注册的结果(LR1,... LRs ... LRn),用户可以选择最佳的本地注册。 在最后一步中,可以合并所选择的本地注册(LR)和全局注册(GR)。 附加地或替代地,可以通过ROI的自动分析来确定ROI中的局部注册的参数向量。

    X-RAY DOSE DISTRIBUTION CALCULATION FOR A COMPUTED TOMOGRAPHY EXAMINATION
    3.
    发明申请
    X-RAY DOSE DISTRIBUTION CALCULATION FOR A COMPUTED TOMOGRAPHY EXAMINATION 有权
    用于计算机图像检查的X射线剂量分布计算

    公开(公告)号:US20160035086A1

    公开(公告)日:2016-02-04

    申请号:US14766142

    申请日:2014-04-21

    Abstract: The invention relates to an apparatus (18) for calculating an x-ray dose distribution within an object for a computed tomography examination. A primary flux determination unit (15) determines firstly a primary flux distribution within the object, wherein then this determined primary flux distribution is used as an initial total flux distribution by a total flux determination unit (16) while applying a six-flux model algorithm. This allows the determination of the total flux distribution to start with a relatively good first approximation of the total flux distribution such that the six-flux model algorithm can determine the total flux distribution very fast. The determined total flux distribution is finally used by a dose distribution determination unit (17) for determining a total dose distribution. The apparatus allows therefore for a very fast determination of x-ray dose distributions for computed tomography examinations.

    Abstract translation: 本发明涉及一种用于计算用于计算机断层摄影检查的对象内的x射线剂量分布的装置(18)。 主要通量确定单元(15)首先确定物体内的主要通量分布,其中随后将该确定的主要通量分布用作总通量确定单元(16)的初始总通量分布,同时施加六通量模型算法 。 这允许总通量分布的确定从总通量分布的相对良好的第一近似开始,使得六通量模型算法可以非常快速地确定总通量分布。 确定的总通量分布最终由剂量分布确定单元(17)用于确定总剂量分布。 因此,该装置可以非常快速地确定计算机断层扫描检查的x射线剂量分布。

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