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    • 8. 发明授权
    • Method and apparatus for setting a dynamically adjustable position of an imaging system
    • 用于设置成像系统的动态可调位置的方法和装置
    • US08023616B2
    • 2011-09-20
    • US12501539
    • 2009-07-13
    • Jan Boese
    • Jan Boese
    • G01N23/00H05G1/62
    • A61B6/504A61B6/4441
    • The invention relates to a method and an apparatus for setting a dynamically adjustable position of an imaging system for providing an optimum view onto a moving object during a medical intervention. A time-resolved at least three-dimensional data record of the moving object is generated. A position of the imaging system for each period of time is determined from the time-resolved data record from which the optimum view onto a structure of interest of the moving object is produced and automatically setting a calculated position of the imaging system in real-time so that the optimum view onto the structure of interest can be shown at any time. Optionally prior to determining the position of the imaging system, a structure of interest of the moving object can be segmented with this structure being segmented for each period of time from the time-resolved data record.
    • 本发明涉及一种用于设置成像系统的动态可调节位置以在医疗介入期间向运动物体提供最佳视野的方法和装置。 生成移动对象的时间分辨的至少三维数据记录。 从时间分辨数据记录确定成像系统的每个时间段的位置,从该时间分辨数据记录生成关于移动物体的感兴趣结构的最佳视图,并且自动地将计算出的成像系统的位置实时地设置 从而可以随时显示关注结构的最佳视图。 可选择地,在确定成像系统的位置之前,可以将该结构从时间分辨数据记录分割为每段时间段来分割移动对象的感兴趣结构。
    • 9. 发明申请
    • Reconstruction of 3D image datasets from x-ray and cone-beam data
    • 从X射线和锥束数据重建3D图像数据集
    • US20110085637A1
    • 2011-04-14
    • US12902237
    • 2010-10-12
    • Jan BoeseFrank DennerleinHolger Kunze
    • Jan BoeseFrank DennerleinHolger Kunze
    • A61B6/03G06T17/00
    • G06T11/006A61B6/027
    • A method for producing a 3D image dataset of an object with an imaging system having an x-ray source and an x-ray detector is provided. A series of two-dimensional arrays of cone beam data from the detector is acquired while the source moves along a substantially planar trajectory around the object. The trajectory is described by a series of source points serially numbered by a counter parameter. The cone beam data is differentiated with respect to the counter parameter at a fixed ray direction to produce a derivative of the cone beam data. The derivative is filtered with a Hilbert-like filter to produce filtered cone beam data. The acquired or the filtered cone beam data is multiplied with a redundancy weighting function. The cone beam data is back-projected to reconstruct a 3D image dataset.
    • 提供了一种使用具有X射线源和X射线检测器的成像系统来生成物体的3D图像数据集的方法。 来自检测器的一系列锥形束数据的二维阵列被获取,同时源沿着物体周围的基本上平面的轨迹移动。 轨迹由一系列通过计数器参数串行编号的源点描述。 锥形束数据在固定的射线方向上相对于计数器参数微分,以产生锥形束数据的导数。 用希尔伯特滤波器滤波导数,以产生滤波的锥束数据。 所获取的或经滤波的锥束数据与冗余加权函数相乘。 锥形束数据被反投影以重建3D图像数据集。
    • 10. 发明申请
    • Method for correcting truncated projection data
    • 用于校正截断的投影数据的方法
    • US20110075798A1
    • 2011-03-31
    • US12891849
    • 2010-09-28
    • Jan BoeseKlaus Klingenbeck
    • Jan BoeseKlaus Klingenbeck
    • G06K9/00A61B6/03
    • A61B6/5241A61B6/032A61B6/4441A61B6/4458G06T11/005G06T2211/432
    • A method for correcting truncated projection data of a rotation for a reconstruction technique for computed tomography scans with truncated projection data in the computed tomography images produced by a C-arm is proposed. At least one truncated projection is recorded. The truncated portions prior to acquisition of the rotation for the at least one truncated projection is captured. The truncated projection and the truncated portions are assembled into at least one complete projection. Truncated projection data is acquired during the rotation. The truncated data is estimated based on a model of the patient geometry from the at least one complete projection. A reconstruction technique is performed on the basis of the acquired and the estimated data.
    • 提出了一种通过C臂产生的计算机断层图像中的截断的投影数据来校正用于计算机断层摄影扫描的重建技术的旋转的截断投影数据的方法。 至少记录一个截断的投影。 捕获用于至少一个截断投影的旋转获取之前的截断部分。 截头突起和截头部分组装成至少一个完整的突起。 截断的投影数据在旋转期间获取。 基于来自至少一个完整投影的患者几何形状的模型来估计截断的数据。 基于获取的和估计的数据执行重建技术。