TOMOGRAPHIC IMAGING MOTION SCAN QUALITY RATING
    3.
    发明申请
    TOMOGRAPHIC IMAGING MOTION SCAN QUALITY RATING 审中-公开
    TOMOGRAPHIC成像运动扫描质量评级

    公开(公告)号:WO2009105645A1

    公开(公告)日:2009-08-27

    申请号:PCT/US2009/034682

    申请日:2009-02-20

    Inventor: MUNDRY, Uwe

    CPC classification number: G06T7/254 G06T2207/10076 G06T2207/30036

    Abstract: A method for determining if an object of a scan generated by a movable scanner has moved by comparing images generated at a plurality of orientations of the movable scanner and information related to such images. The object is scanned at a first orientation of the movable scanner, and scanned a second time at the first orientation of the movable scanner. A first brightness quantity is generated based on scanning the object at the first orientation, and a second brightness quantity is generated based on scanning the object the second time at the first orientation. The method also includes determining a motion factor based on the first brightness quantity, the second brightness quantity, and first and second images generated at the first orientations of the movable scanner.

    Abstract translation: 一种用于通过比较在可移动扫描器的多个方向上产生的图像和与这些图像相关的信息来确定由可移动扫描器产生的扫描对象是否移动的方法。 物体在可移动扫描器的第一方向被扫描,并且在可移动扫描器的第一方位上第二次扫描。 基于在第一取向处扫描对象而产生第一亮度量,并且基于在第一方向上第二次扫描对象来生成第二亮度量。 该方法还包括基于第一亮度量,第二亮度量以及在可移动扫描器的第一取向产生的第一和第二图像来确定运动因子。

    SCATTER CORRECTION
    4.
    发明申请
    SCATTER CORRECTION 审中-公开
    散热器校正

    公开(公告)号:WO2007044417A2

    公开(公告)日:2007-04-19

    申请号:PCT/US2006/038832

    申请日:2006-10-04

    CPC classification number: G01N23/04 A61B6/5282 A61B6/583 G01N2223/045

    Abstract: In one embodiment of a method of and apparatus for correcting for scatter, an object, which may be the jaw of a dental patient, is subjected to x-rays or other penetrating radiation. An intensity distribution of the transmitted radiation is detected. A first array of voxel data representing the absorption of the radiation by the object is reconstructed from the detected intensity. A radiation scatter pattern is calculated by forward projection from the first array using one or more point spread functions. The detected intensity is corrected using the calculated radiation scatter pattern. A second array of voxel data representing the absorption of the radiation by the object is reconstructed from the corrected detected intensity.

    Abstract translation: 在用于校正散射的方法和装置的一个实施例中,可以是牙科患者的颌骨的物体经受x射线或其它穿透辐射。 检测发射辐射的强度分布。 从检测到的强度重建表示物体对辐射的吸收的体素数据的第一阵列。 通过使用一个或多个点扩展函数从第一阵列向前投影来计算辐射散射图案。 使用所计算的辐射散射图来校正检测到的强度。 从校正的检测强度重建代表物体对辐射的吸收的体素数据的第二阵列。

    PANORAMIC VIEW GENERATOR
    5.
    发明申请
    PANORAMIC VIEW GENERATOR 审中-公开
    全景观察发电机

    公开(公告)号:WO2007030163A2

    公开(公告)日:2007-03-15

    申请号:PCT/US2006/019873

    申请日:2006-05-20

    Abstract: In a method and apparatus for generating a view of a jaw, a tomographic dataset of a volume including at least part of the jaw is obtained. Inner and outer surfaces of the jaw are identified in the tomographic dataset. Data for a region with boundaries related to the identified inner and outer surfaces are selected. A panoramic view is generated from the selected data and is displayed.

    Abstract translation: 在用于产生颌的视图的方法和装置中,获得包括至少部分钳口的体积的断层数据集。 在断层数据集中识别颌骨的内表面和外表面。 选择具有与所识别的内表面和外表面相关的边界的区域的数据。 从所选数据生成全景视图,并显示。

    LOCATION OF ELONGATED OBJECT
    6.
    发明申请
    LOCATION OF ELONGATED OBJECT 审中-公开
    远程对象的位置

    公开(公告)号:WO2007021346A2

    公开(公告)日:2007-02-22

    申请号:PCT/US2006/019319

    申请日:2006-05-20

    Abstract: A method and apparatus for locating an elongated object in a three dimensional data array are disclosed. A slice of data generally lengthways of the elongated object is selected. Points on the object in the selected slice are identified. Data including the points are transposed parallel to the slice and transversely to the elongated object to align the points in a direction parallel to the slice and transverse to the elongated object. A current slice is selected that is rotated around the length direction of the object relative to the previously selected slice. The identifying and transposing are repeated to align points on the object in a direction parallel to the current slice and transverse to the elongated object.

    Abstract translation: 公开了一种用于在三维数据阵列中定位细长物体的方法和装置。 选择通常纵长的物体的数据的切片。 识别所选切片中对象上的点。 包括点的数据平行于切片并且横向于细长物体转置,以使得平行于切片并横向于细长物体的方向对准点。 选择相对于先前选择的切片围绕对象的长度方向旋转的当前切片。 重复识别和转置以在平行于当前切片并横向于细长物体的方向上对准物体上的点。

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