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公开(公告)号：US09014341B2
公开(公告)日：2015-04-21
申请号：US14071178
申请日：2013-11-04
发明人： Xiaoyan Zhang , Jun Guo , Xuyong Yang
摘要： A CT collimator comprising a rotating slot part on a rotation shaft and having a plurality of blades, each blade has a slot of a different width and a radiation beam entering the collimator can only pass via a slot in one of the blades, each edge of each blade slot along a longitudinal direction has a convex curved surface structure, and in a vertical plane along a longitudinal direction, two side edges of the slot are curved, and each blade is arranged to be eccentric to the center of the rotation shaft. A CT system using the CT collimator, the detection area of the radiation rays projected to the radiation detector via the CT collimator can be maintained unchanged by adjusting the rotation angle of the blade, under the circumstance where the focus of the radiation source shifts during a CT scan.
摘要翻译： 一种CT准直器，包括在旋转轴上的旋转槽部分并且具有多个叶片，每个叶片具有不同宽度的狭槽，并且进入准直器的辐射束只能经过其中一个叶片中的槽， 沿着纵向方向的每个叶片槽具有凸曲面结构，并且在沿着纵向方向的垂直平面中，槽的两个侧边缘是弯曲的，并且每个叶片布置成偏心于旋转轴的中心。 使用CT准直器的CT系统，通过调整刀片的旋转角度，在辐射源的焦点在一定时间内移动的情况下，通过CT准直仪投射到放射线检测器的放射线的检测区域可以保持不变 CT扫描。
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2.发明申请公开(公告)号：US20140146939A1
公开(公告)日：2014-05-29
申请号：US14078658
申请日：2013-11-13
发明人： Xiaoyan Zhang , Xue li Wang , Jun Guo , Xuyong Yang , Qinglei Li
CPC分类号： A61B6/035 , A61B6/06 , A61B6/4233 , G01T1/2985 , G21K1/02
摘要： An X-ray detector, a collimator, a CT apparatus and a method thereof are provided. The X-ray detector comprises a plurality of detector modules which are arranged in an array along a slice direction and a signal channel direction being orthogonal to each other, the array at least comprising a left detection area, a central detection area and a right detection area that are contiguous in the signal channel direction, wherein, in the slice direction, coverage of the left detection area and coverage of the right detection area are complementary and sum of these two coverages is equal to coverage of the central detection area. The collimator comprises a pair of moving shield plates and a fixing shield plate, wherein shape of a window in the fixing shield plate is the same as shape of the array. The CT apparatus comprises the X-ray detector and the collimator.
摘要翻译： 提供了X射线检测器，准直器，CT装置及其方法。 X射线检测器包括沿着切片方向排列成阵列并且彼此正交的信号通道方向的多个检测器模块，该阵列至少包括左检测区域，中央检测区域和右检测区域 区域，其中在切片方向上，左检测区域的覆盖和右检测区域的覆盖是互补的，并且这两个覆盖的总和等于中央检测区域的覆盖。 准直器包括一对移动屏蔽板和固定屏蔽板，其中固定屏蔽板中的窗口形状与阵列的形状相同。 CT装置包括X射线检测器和准直器。
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