Method and System for Model-Based Fusion of Computed Tomography and Non-Contrasted C-Arm Computed Tomography
    52.
    发明申请
    Method and System for Model-Based Fusion of Computed Tomography and Non-Contrasted C-Arm Computed Tomography 有权
    计算机断层扫描和非对比C臂计算机断层扫描的基于模型融合的方法和系统

    公开(公告)号:US20130129174A1

    公开(公告)日:2013-05-23

    申请号:US13683224

    申请日:2012-11-21

    IPC分类号: G06T7/00

    摘要: A method and system for model-based fusion of multi-modal volumetric images is disclosed. A first patient-specific model of an anchor anatomical structure is detected in a first medical image acquired using a first imaging modality, and a second patient-specific model of the anchor anatomical structure is detected in a second medical image acquired using a second imaging modality. A weighted mapping function is determined based on the first patient-specific model of the anchor anatomical structure and the second patient-specific model of the anchor anatomical structure using learned weights to minimize mapping error with respect to a target anatomical structure. The target anatomical structure from the first medical image to the second medical image using the weighted mapping function. In an application of this model-based fusion to transcatheter valve therapies, the trachea bifurcation is used as the anchor anatomical structure and the aortic valve is the target anatomical structure.

    摘要翻译: 公开了一种用于多模态体积图像的基于模型融合的方法和系统。 在使用第一成像模态获取的第一医疗图像中检测锚固解剖结构的第一患者特定模型,并且在使用第二成像模态获取的第二医疗图像中检测锚固解剖结构的第二患者特定模型 。 基于锚解剖结构的第一患者特定模型和使用学习权重的锚定解剖结构的第二患者特定模型来确定加权映射函数,以使关于目标解剖结构的映射误差最小化。 使用加权映射函数从第一医学图像到第二医学图像的目标解剖结构。 在这种基于模型的融合对经导管瓣膜治疗的应用中,气管分叉用作锚固解剖结构,主动脉瓣是目标解剖结构。

    System for Medical Imaging Using Long Persistence Contrast Agents
    55.
    发明申请
    System for Medical Imaging Using Long Persistence Contrast Agents 有权
    使用长寿命对比剂进行医学影像系统

    公开(公告)号:US20120307964A1

    公开(公告)日:2012-12-06

    申请号:US13484311

    申请日:2012-05-31

    IPC分类号: A61B6/03

    摘要: A system acquires images in the presence of a contrast agent of relatively long persistence using a synchronization processor, image acquisition device and imaging controller. The synchronization processor provides an image acquisition trigger signal for acquiring images at a particular point within both a cardiac and a respiratory cycle in response to signals representing cardiac and respiratory cycles. The image acquisition device includes an assembly comprising a radiation emitter and detector rotatable about a patient for acquiring images of a portion of patient anatomy at different angles. The imaging controller initiates acquisition of data representing multiple images in the presence of a contrast agent of relatively long persistence by repetitively, initiating rotation of the assembly to an angle, acquiring an image at the angle in response to the trigger signal and incrementally increasing the angle.

    摘要翻译: 系统使用同步处理器,图像获取装置和成像控制器在存在具有较长持久性的造影剂的情况下获取图像。 同步处理器响应于表示心脏和呼吸周期的信号,提供用于在心脏和呼吸周期内的特定点获取图像的图像采集触发信号。 图像采集装置包括一个组件,该组件包括辐射发射器和围绕患者旋转的检测器,用于以不同的角度获取患者解剖结构的一部分的图像。 成像控制器在存在持续时间相对较长的造影剂的情况下启动表示多个图像的数据,重复地启动组件的旋转角度,响应于触发信号以角度获取图像并递增地增加角度 。

    Method for the production of angiography recordings
    57.
    发明授权
    Method for the production of angiography recordings 有权
    生产血管造影记录的方法

    公开(公告)号:US08054941B2

    公开(公告)日:2011-11-08

    申请号:US12507818

    申请日:2009-07-23

    摘要: The invention relates to a method for the production of angiography recordings. First, a mask image is recorded with a first modality. A contrast medium is injected after the first recording. A control image is recorded with a second modality after the injection of the contrast medium. A spreading of the contrast medium is determined based on the images and the control of subsequent recordings is analyzed. A recording criterion is checked to determine whether the recording criterion has been achieved. If it has not been achieved, the control image is repeatedly recorded for repeatedly determining the spreading of the contrast medium. If it has been achieved, a contrast image is recorded with the first modality and the mask image and the contrast image are processed and analyzed.

    摘要翻译: 本发明涉及一种生产血管造影记录的方法。 首先,以第一模式记录掩模图像。 在第一次记录之后注射造影剂。 在注射造影剂之后,以第二模态记录控制图像。 基于图像确定造影剂的扩展,并分析后续记录的控制。 检查记录标准以确定是否已经实现了记录标准。 如果还没有实现,则重复记录控制图像以重复确定造影剂的扩展。 如果已经实现,则用第一模态记录对比度图像,并且处理和分析掩模图像和对比度图像。

    Method for Reconstruction of a Current Three-Dimensional Image Dataset of an Object During a Monitoring Process and X-Ray Device
    58.
    发明申请
    Method for Reconstruction of a Current Three-Dimensional Image Dataset of an Object During a Monitoring Process and X-Ray Device 有权
    在监测过程和X射线设备期间重建对象的当前三维图像数据集的方法

    公开(公告)号:US20110268341A1

    公开(公告)日:2011-11-03

    申请号:US13094423

    申请日:2011-04-26

    IPC分类号: G06K9/00 G01N23/04 B82Y99/00

    摘要: A method for reconstruction of an actual three-dimensional image dataset of an object during a monitoring process is proposed. Two-dimensional. X-ray projection images which correspond to a recording geometry are continuously recorded from different projection angles. The three-dimensional image dataset are reconstructed from a first number of these projection images, especially by a back projection method. The proportion of the oldest projection image contained in the current three-dimensional image dataset is removed from the three-dimensional image dataset and the proportion of the actual projection image is inserted in the three-dimensional image dataset after each recording of the actual projection image.

    摘要翻译: 提出了一种用于在监视过程中重建对象的实际三维图像数据集的方法。 二维。 对应于记录几何的X射线投影图像从不同的投影角度连续记录。 从第一数量的这些投影图像,特别是通过反投影方法重构三维图像数据集。 将包含在当前三维图像数据集中的最旧的投影图像的比例从三维图像数据集中去除,并且在每次记录实际投影图像之后将实际投影图像的比例插入到三维图像数据集中 。

    Device for merging a 2D radioscopy image with an image from a 3D image data record
    59.
    发明授权
    Device for merging a 2D radioscopy image with an image from a 3D image data record 有权
    用于将2D放射成像图像与来自3D图像数据记录的图像合并的装置

    公开(公告)号:US08045780B2

    公开(公告)日:2011-10-25

    申请号:US11904583

    申请日:2007-09-27

    IPC分类号: G06K9/00

    摘要: The invention relates to a device for merging a 2D radioscopy image with an image obtained from a 3D image data record, having a memory unit that stores the 2D radioscopy image and the 3D image data record, a segmentation unit that segments an inner surface of a hollow organ from the 3D image data record, a registration unit that registers the 2D radioscopy image with the 3D image data record, a back-projection unit that back-projects the pixels of the 2D radioscopy image onto the segmented surface, taking account of the projection geometry of the 2D radioscopy image and the registration, and an image merger unit that generates a virtual endoscopy view of the surface from the segmented surface using the back-projected pixels. The device primarily allows 2D radioscopy images to be superimposed during interventional procedures with a fly display of the interior of an interesting organ.

    摘要翻译: 本发明涉及一种用于将2D放射线图像与从3D图像数据记录获得的图像合并的装置,具有存储2D放射线图像和3D图像数据记录的存储单元,分割单元,其将 来自3D图像数据记录的空心器官,将2D放射线图像与3D图像数据记录注册的登记单元,将2D放射线图像的像素反投影到分割表面上的背投影单元,考虑到 2D放射线图像的投影几何图像和配准,以及图像合并单元,其使用后投影像素从分割表面生成表面的虚拟内窥镜视图。 该装置主要允许在介入手术过程中叠加2D放射成像图像,并显示有趣器官内部的飞行显示。

    Evaluation method for mapping the myocardium of a patient
    60.
    发明授权
    Evaluation method for mapping the myocardium of a patient 有权
    用于绘制患者心肌的评估方法

    公开(公告)号:US08023707B2

    公开(公告)日:2011-09-20

    申请号:US12079142

    申请日:2008-03-25

    IPC分类号: G06K9/00 A61B6/00

    摘要: The invention relates to an evaluation method for mapping the myocardium of a patient, in particular the automated, functional evaluation, for instance the heart perfusion, in angiographic series with the steps: recording a series of angiographic recordings directly after administering a contrast agent to the patient; determining a reference area in an angiographic recording; determining a trend pattern of the contrast agent as a reference curve within the reference area from the series of angiographic recordings; obtaining trend patterns of the contrast agent from all areas of the angiographic recordings; determining the correlation between the trend patterns and the reference curve as a measure for the interrelationship between statistical variables, comparison with stored reference curve; comparison of the correlation coefficient with a threshold value; and reproduction of a marker identifying the myocardium.

    摘要翻译: 本发明涉及用于映射患者心肌的评估方法,特别是血管造影系列中的自动功能评估(例如心脏灌注),其步骤为:在将造影剂施用于患者之后直接记录一系列血管造影记录 患者; 确定血管造影记录中的参考区域; 确定造影剂的趋势图案作为来自该系列血管造影记录的参考区域内的参考曲线; 从血管造影记录的所有区域获得造影剂的趋势图; 确定趋势模式和参考曲线之间的相关性,作为统计变量之间相互关系的度量,与存储的参考曲线进行比较; 相关系数与阈值的比较; 以及识别心肌的标记物的繁殖。