FAN-SHAPED X-RAY BEAM IMAGING SYSTEMS EMPLOYING GRADED MULTILAYER OPTIC DEVICES
    3.
    发明申请
    FAN-SHAPED X-RAY BEAM IMAGING SYSTEMS EMPLOYING GRADED MULTILAYER OPTIC DEVICES 有权
    扇形X射线光束成像系统采用分级多层光器件

    公开(公告)号:US20120051499A1

    公开(公告)日:2012-03-01

    申请号:US12871484

    申请日:2010-08-30

    摘要: An X-ray imaging system that produces one or more fan-shaped beams is described. The system includes a target for emitting X rays that includes at least one target focal spot, and one or more graded multilayer optic devices in optical communication with the target. The optics transmits at least a portion of the source X rays to produce the one or more fan-shaped beams. The graded multilayer optic devices include at least a first graded multilayer section for redirecting and transmitting X rays through total internal reflection. The graded multilayer section includes a high-index layer of material having a first complex refractive index n1, a low-index layer of material having a second complex refractive index n2, and a grading zone disposed between the high-index and low-index layers of material. The grading zone includes a grading layer having a third complex refractive index n3 such that Re(n1)>Re(n2)>Re(n3).

    摘要翻译: 描述了产生一个或多个扇形光束的X射线成像系统。 该系统包括用于发射包括至少一个目标焦点的X射线的目标,以及与目标光学通信的一个或多个渐变多层光学器件。 光学器件透射源X射线的至少一部分以产生一个或多个扇形光束。 分级多层光学器件至少包括用于通过全内反射重定向和透射X射线的第一渐变多层部分。 分级多层部分包括具有第一复折射率n1的材料的高折射率层,具有第二复折射率n2的材料的低折射率层,以及设置在高折射率层和低折射率层之间的分级区 的材料。 分级区域包括具有第三复折射率n3的分级层,使得Re(n1)> Re(n2)> Re(n3)。

    Multi-energy imaging system and method using optic devices
    4.
    发明授权
    Multi-energy imaging system and method using optic devices 失效
    多能成像系统和使用光学器件的方法

    公开(公告)号:US07742566B2

    公开(公告)日:2010-06-22

    申请号:US11952498

    申请日:2007-12-07

    IPC分类号: G21K1/06 G21K3/00

    摘要: A multi-energy imaging system and method for selectively generating high-energy X-rays and low-energy X-ray beams are described. A pair of optic devices are used, one optic device being formed to emit high X-ray energies and the other optic device being formed to emit low X-ray energies. A selective filtering mechanism is used to filter the high X-ray energies from the low X-ray energies. The optic devices have at least a first solid phase layer having a first index of refraction with a first photon transmission property and a second solid phase layer having a second index of refraction with a second photon transmission property. The first and second layers are conformal to each other.

    摘要翻译: 描述了用于选择性地生成高能量X射线和低能量X射线束的多能量成像系统和方法。 使用一对光学器件,一个光学器件形成为发射高X射线能量,另一个光学器件形成为发射低X射线能量。 选择性过滤机制用于从低X射线能量过滤高X射线能量。 光学器件具有至少第一固相层,其具有第一光子透射特性的第一折射率和具有第二光子透射特性的第二折射率的第二固相层。 第一层和第二层彼此共形。

    Geometry-dependent filtering in CT method and apparatus
    5.
    发明申请
    Geometry-dependent filtering in CT method and apparatus 有权
    CT方法和装置中的几何依赖滤波

    公开(公告)号:US20080219532A1

    公开(公告)日:2008-09-11

    申请号:US11714306

    申请日:2007-03-06

    IPC分类号: G03B42/02

    CPC分类号: G06T11/005 A61B6/5258

    摘要: A method is provided for processing an image. The method comprises identifying one or more contours or surfaces in a two-dimensional or three-dimensional image generated from a set of projection data. The set of projection data is differentially processed based on the identification of those data points that largely define one or more contours or surfaces. An enhanced image set is reconstructed from the set of processed projection data.

    摘要翻译: 提供了一种处理图像的方法。 该方法包括识别从一组投影数据生成的二维或三维图像中的一个或多个轮廓或表面。 基于大量定义一个或多个轮廓或表面的那些数据点的识别,对该组投影数据进行差分处理。 从一组经处理的投影数据重建增强图像集。

    Fan-shaped X-ray beam imaging systems employing graded multilayer optic devices
    8.
    发明授权
    Fan-shaped X-ray beam imaging systems employing graded multilayer optic devices 有权
    采用渐变多层光学器件的扇形X射线束成像系统

    公开(公告)号:US08311184B2

    公开(公告)日:2012-11-13

    申请号:US12871484

    申请日:2010-08-30

    IPC分类号: G21K1/06

    摘要: An X-ray imaging system that produces one or more fan-shaped beams is described. The system includes a target for emitting X rays that includes at least one target focal spot, and one or more graded multilayer optic devices in optical communication with the target. The optics transmits at least a portion of the source X rays to produce the one or more fan-shaped beams. The graded multilayer optic devices include at least a first graded multilayer section for redirecting and transmitting X rays through total internal reflection. The graded multilayer section includes a high-index layer of material having a first complex refractive index n1, a low-index layer of material having a second complex refractive index n2, and a grading zone disposed between the high-index and low-index layers of material. The grading zone includes a grading layer having a third complex refractive index n3 such that Re(n1)>Re(n2)>Re(n3).

    摘要翻译: 描述了产生一个或多个扇形光束的X射线成像系统。 该系统包括用于发射包括至少一个目标焦点的X射线的目标,以及与目标光学通信的一个或多个渐变多层光学器件。 光学器件透射源X射线的至少一部分以产生一个或多个扇形光束。 分级多层光学器件至少包括用于通过全内反射重定向和透射X射线的第一渐变多层部分。 分级多层部分包括具有第一复折射率n1的材料的高折射率层,具有第二复折射率n2的材料的低折射率层,以及设置在高折射率层和低折射率层之间的分级区 的材料。 分级区域包括具有第三复折射率n3的分级层,使得Re(n1)> Re(n2)> Re(n3)。