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    METHOD AND APPARATUS FOR PLANNING OR CONTROLLING A RADIATION TREATMENT
    2.
    发明授权
    METHOD AND APPARATUS FOR PLANNING OR CONTROLLING A RADIATION TREATMENT 有权
    用于规划或控制辐射处理的方法和设备

    公开(公告)号：EP3142077B1

    公开(公告)日：2017-12-06

    申请号：EP16194882.3

    申请日：2011-05-25

    申请人： Brainlab AG

    发明人： Bertram, Pascal ,  Promberger, Claus ,  Flurschütz, Thomas

    IPC分类号： G06T15/06 ,  G06T15/08 ,  G06F19/00

    CPC分类号： A61N5/1039 ,  A61N5/103 ,  A61N5/1048 ,  A61N2005/1061 ,  A61N2005/1074 ,  G06F19/00 ,  G06F19/3481 ,  G06T7/0012 ,  G06T7/11 ,  G06T15/06 ,  G06T15/08 ,  G06T2200/04 ,  G06T2207/10072 ,  G06T2207/30024 ,  G06T2207/30096 ,  G06T2210/41 ,  G06T2211/40

    摘要： A method of generating a virtual collision map for use in optimizing planning of a radiation treatment by a radiation beam to be delivered from an associated treatment device on a gantry to a patient target volume (PTV) within a treatment volume of an associated patient disposed on a couch operatively coupled with the associated treatment device, the method comprising: acquiring segmented data, the segmented data being representative of a characteristic of the PTV, and representative of a non-treatment volume comprising an organ at risk (OAR) of the associated patient; modeling the PTV of the segmented data as a source of simulated rays projecting outwardly relative to the PTV and having a predetermined initial value; modeling the OAR of the segmented data as having an assigned ray attenuation feature to reduce an intensity of a selected one or more of the simulated rays passing through the OAR; defining a virtual map surface surrounding the PTV and the OAR; calculating an accumulated intensity value for points on the virtual map surface having the simulated rays passing through the points, the accumulated intensity value of each point being i) the predetermined initial value for areas of the virtual map surface having simulated rays passing directly from the PTV to the virtual map surface, and ii) the predetermined initial value attenuated by the assigned ray attenuation feature of the OAR for areas of the virtual map surface having the OAR disposed between the PTV and the virtual map surface; generating an intensity distribution on the virtual map surface in accordance with the calculated accumulated intensity values; and determining, in accordance with the intensity distribution, the virtual collision map defining a relationship between the associated patient disposed on the couch and plural positions of the treatment device on the gantry relative to the associated patient for delivering the radiation beam to the PTV.

    METHOD FOR GENERATING A COMBINED PROJECTION IMAGE
    7.
    发明公开
    METHOD FOR GENERATING A COMBINED PROJECTION IMAGE 有权
    生成组合投影图像的方法

    公开(公告)号：EP2998936A2

    公开(公告)日：2016-03-23

    申请号：EP15180132.1

    申请日：2015-08-07

    申请人： Siemens Aktiengesellschaft

    发明人： Kelm, Michael ,  Abdurahman, Shiras ,  Jerebko, Anna

    IPC分类号： G06T11/00 ,  G06T15/08

    CPC分类号： G06T11/003 ,  A61B6/032 ,  A61B6/4078 ,  A61B6/5205 ,  G06T11/008 ,  G06T2211/40 ,  G06T2211/436

    摘要： The present invention relates to a method for generating a combined projection image (SM) from a medical inspection object, comprising the steps of capturing (S101) a set of initial projection images (PI); reconstructing (S102) a first and a second three-dimensional volume (RV1, RV2) from the set of initial projection images (PI); generating (S103) a first re-projection image (RP1) from the first three-dimensional volume (RV1) and a second re-projection image (RP2) from the second three-dimensional volume (RV2); weighting (S104) the first re-projection image (RP1) and the second re-projection image (RP2); and combining (S105) the weighted first re-projection image (RP1) and second re-projection image (RP2) for generating the combined projection image (SM).

    摘要翻译： 包括以下步骤：捕获（S101）一组初始投影图像（PI）;根据所述组合投影图像（SM）生成组合投影图像（SM）。 从该组初始投影图像（PI）中重建（S102）第一和第二三维体积（RV1，RV2）; 从第一三维体积（RV1）产生（S103）第一重新投影图像（RP1）和从第二三维体积（RV2）产生第二重新投影图像（RP2）; 对所述第一重新投影图像（RP1）和所述第二重新投影图像（RP2）进行加权（S104）; 以及组合（S105）加权的第一重新投影图像（RP1）和第二重新投影图像（RP2）以生成组合投影图像（SM）。

    METHOD AND APPARATUS FOR LARGE FIELD OF VIEW IMAGING AND DETECTION AND COMPENSATION OF MOTION ARTIFACTS
    8.
    发明公开
    METHOD AND APPARATUS FOR LARGE FIELD OF VIEW IMAGING AND DETECTION AND COMPENSATION OF MOTION ARTIFACTS 审中-公开
    方法和设备代表了很大的面子面板和检测和补偿运动伪影

    公开(公告)号：EP2389114A1

    公开(公告)日：2011-11-30

    申请号：EP09804149.4

    申请日：2009-12-23

    申请人： Koninklijke Philips Electronics N.V. ,  Philips Intellectual Property & Standards GmbH

    发明人： SCHRETTER, Colas ,  BERTRAM, Matthias ,  NEUKIRCHEN, Christoph

    IPC分类号： A61B6/03

    CPC分类号： G06T11/005 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/4233 ,  A61B6/4452 ,  A61B6/488 ,  A61B6/5217 ,  A61B6/542 ,  A61B6/587 ,  G06T5/20 ,  G06T7/20 ,  G06T2207/10116 ,  G06T2207/20032 ,  G06T2211/40 ,  G06T2211/412

    摘要： A method and apparatus are provided to improve large field of view CT image acquisition by using at least two scanning procedures: (i) one with the radiation source and detector centered and (ii) one in an offset configuration. The imaging data obtained from both of the scanning procedures is used in the reconstruction of the image. In addition, a method and apparatus are provided for detecting motion in a reconstructed image by generating a motion map that is indicative of the regions of the reconstructed image that are affected by motion artifacts. Optionally, the motion map may be used for motion estimation and/or motion compensation to prevent or diminish motion artifacts in the resulting reconstructed image. An optional method for generating a refined motion map is also provided.

    摘要翻译： 本发明提供一种方法和设备，通过使用至少两个扫描程序，提高视图CT图像采集的大视场：（i）一个与所述辐射源和检测器的中心和（ii）一种在以抵消配置。 从两者的扫描程序获得的成像数据在图像的重建中使用。 此外，提供了一种方法和装置，用于通过产生一个运动图中的重构图像检测运动所做的是表示重建图像的区域也由运动伪影的影响。 任选地，所述运动图可以用于运动估计和/或运动补偿，以防止或减少运动伪影在重建的图像得到的。 因此，提供用于生成细化的运动地图的可选方法。