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1. 发明授权

US08045677B2 Shifting an object for complete trajectories in rotational X-ray imaging 有权
标题翻译：在旋转X射线成像中移动物体以获得完整的轨迹
公开(公告)号：US08045677B2
公开(公告)日：2011-10-25
申请号：US12441613
申请日：2007-09-17
申请人： Babak Movassaghi , Robert Manzke , Joel Alberto Garcia
发明人： Babak Movassaghi , Robert Manzke , Joel Alberto Garcia
IPC分类号： G01N23/04 , G01N23/083
CPC分类号： A61B6/0457 , A61B6/04 , A61B6/102 , A61B6/4441 , A61B6/4458 , A61B6/481 , A61B6/504 , A61B6/542 , A61B6/544 , A61B6/583
摘要： It is described a method for acquiring a series of two-dimensional X-ray attenuation data of an object under examination (310) by means of an X-ray imaging apparatus (100) having a rotatable scanning unit (301). In order to increase the angular range of the scanning unit (301), when a region of interest (HOa) located not in the center of the object (310) is examined the object under examination (310) is shifted such that the region of interest is temporarily positioned outside the center of rotation. By coupling the rotational movement of the scanning unit (301) with the translative movement of the object (310) in a synchronized manner a collision between the scanning unit (301) and the object (310) can be effectively avoided. By employing an automated motorized object table (312) a precise pre-determined movement of the object (310) can be achieved during the data acquisition. By using an appropriate phantom based calibration procedure carried out with the same table movements known three-dimensional reconstruction algorithm can be directly applied in order to generate a three-dimensional representation of the region of interest (110a).
摘要翻译：描述了一种通过具有可旋转扫描单元（301）的X射线成像设备（100）获取被检查物体（310）的一系列二维X射线衰减数据的方法。为了增加扫描单元（301）的角度范围，当检查位于物体（310）中心的感兴趣区域（110a）被检查时，检查对象（310）被移动，使得区域兴趣被暂时定位在旋转中心之外。通过将扫描单元（301）的旋转运动与物体（310）的平移运动以同步的方式耦合，可以有效地避免扫描单元（301）和物体（310）之间的碰撞。通过采用自动电动对象表（312），可以在数据采集期间实现物体（310）的精确的预定移动。通过使用用相同的表移动执行的适当的基于幻影的校准程序，可以直接应用已知的三维重建算法，以便产生感兴趣区域（110a）的三维表示。

2. 发明授权

US08059873B2 Volume of interest selection 有权
标题翻译：感兴趣的选择量
公开(公告)号：US08059873B2
公开(公告)日：2011-11-15
申请号：US11719858
申请日：2005-11-16
申请人： Hubrechte Lambertus Tjalling De Bliek , Frans Andreas Gerritsen
发明人： Hubrechte Lambertus Tjalling De Bliek , Frans Andreas Gerritsen
IPC分类号： G06K9/00
CPC分类号： G06T7/12 , G06T2207/10072 , G06T2207/10088 , G06T2207/20092 , G06T2207/20104 , G06T2207/30004 , G06T2207/30048 , Y10S128/922
摘要： A method of creating a segmentation of a volume of interest in an object data set is described, which object data set is formatted into object data slices, in which at least two object data slices each contain a contour line defining the portion of the volume of interest present in that object data slice as a region of interest. The method comprises the steps of calculating at least one surface which cuts through each of the at least two regions of interest, defining two curves on each surface which intersect with the contour lines, arranging for those curves to define the portion of the volume of interest present in the surface, calculating on each of the remaining object data slices a contour line which includes those points on the curves which intersect with that object data slice. A computer program and work station are also described.
摘要翻译：描述了在对象数据集中创建感兴趣体积的分割的方法，哪个对象数据集被格式化成对象数据切片，其中至少两个对象数据切片各自包含定义卷的部分的轮廓线在该对象数据切片中存在感兴趣的区域的兴趣。该方法包括以下步骤：计算切割所述至少两个感兴趣区域中的每一个的至少一个表面，在与轮廓线相交的每个表面上限定两条曲线，设置那些曲线以限定感兴趣体积的部分存在于表面上，在每个剩余的对象数据切片上计算包括与该对象数据切片相交的曲线上的那些点的轮廓线。还描述了计算机程序和工作站。

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