Method and apparatus for reducing cone beam artifacts using spatially varying weighting functions
    14.
    发明授权
    Method and apparatus for reducing cone beam artifacts using spatially varying weighting functions 有权
    使用空间变化的加权函数减少锥束伪像的方法和装置

    公开(公告)号:US07613275B2

    公开(公告)日:2009-11-03

    申请号:US11305929

    申请日:2005-12-19

    IPC分类号: A61B6/00

    摘要: A method for combining images acquired using helical half-scan imaging comprises identifying an image plane within an overlap region comprising data from first and second view streams representative of first and second cycles of acquired image data. The image plane comprises the same anatomical structure. First and second weighting functions are calculated for first and second images based on first and second tube positions of an x-ray tube. The first and second images correspond to the image plane and are from the first and second view streams, respectively. The first and second tube positions also correspond to the image plane. A weighted image is then formed based on the first and second weighting functions and the first and second images.

    摘要翻译: 一种用于组合使用螺旋半扫描成像获取的图像的方法包括在包括表示所获取的图像数据的第一和第二周期的第一和第二视图流的数据的重叠区域内识别图像平面。 图像平面包括相同的解剖结构。 基于X射线管的第一和第二管位置对第一和第二图像计算第一和第二加权函数。 第一和第二图像分别对应于图像平面并且分别来自第一和第二视图流。 第一和第二管位置也对应于图像平面。 然后基于第一和第二加权函数以及第一和第二图像形成加权图像。

    Computed tomography scout images with depth information
    19.
    发明授权
    Computed tomography scout images with depth information 失效
    具有深度信息的计算机断层摄影监视图像

    公开(公告)号:US06393090B1

    公开(公告)日:2002-05-21

    申请号:US09410161

    申请日:1999-09-30

    IPC分类号: G01N2300

    摘要: The present invention, in one form, is a method for generating depth information images of an object using a computed tomography system by performing multiple scout scans of the object, generating a scout image for each scout scan, and displaying the scout images from each scout scan at least once. As a result, the multiple scout images contain depth information of anatomical objects and 3D images are rapidly generated without increasing the cost of the system.

    摘要翻译: 一种形式的本发明是一种使用计算机断层摄影系统生成对象的深度信息图像的方法,通过对对象进行多次侦察扫描,为每个侦察扫描生成侦察图像,并且显示来自每个侦察器的侦察图像 扫描至少一次。 结果,多个侦察图像包含解剖对象的深度信息,并且快速地生成3D图像而不增加系统的成本。

    DE-POPULATED DETECTOR FOR COMPUTED TOMOGRAPHY AND METHOD OF MAKING SAME
    20.
    发明申请
    DE-POPULATED DETECTOR FOR COMPUTED TOMOGRAPHY AND METHOD OF MAKING SAME 审中-公开
    用于计算机图像的人口检测器及其制造方法

    公开(公告)号:US20110211667A1

    公开(公告)日:2011-09-01

    申请号:US12714168

    申请日:2010-02-26

    IPC分类号: H05G1/60 B23P11/00

    摘要: A system, method, and apparatus includes a computed tomography (CT) detector array having a central region with a plurality of central region detecting cells configured to acquire CT data of a first number of slices during a scan, a first wing along a first side of the central region, and a second wing along a second side of the central region opposite the first side. The first wing includes a plurality of first wing detecting cells configured to acquire CT data of a second number of slices during the scan. The second wing includes a plurality of second wing detecting cells configured to acquire CT data of a third number of slices during the scan. The second and third number of slices are less than the first number of slices. The first wing detecting cells are of a different type than the central region detecting cells.

    摘要翻译: 系统,方法和装置包括具有中心区域的计算机断层摄影(CT)检测器阵列,多个中心区域检测单元被配置为在扫描期间获取第一数量的切片的CT数据,沿着第一侧 并且沿着与第一侧相对的中心区域的第二侧的第二翼。 第一机翼包括多个第一机翼检测单元,其被配置为在扫描期间获取第二数量的切片的CT数据。 第二翼包括多个第二翼检测单元,其被配置为在扫描期间获取第三数量的切片的CT数据。 第二和第三数量的切片小于第一数量的切片。 第一机翼检测单元与中央区域检测单元不同。