公开(公告)号：US20100046822A1

公开(公告)日：2010-02-25

申请号：US12514541

申请日：2007-06-08

申请人： Yunxiang LI ,  Hongguang Cao

发明人： Yunxiang LI ,  Hongguang Cao

IPC分类号： G06K9/40 ,  G06T7/00

CPC分类号： A61B6/00 ,  A61B6/5282 ,  G03B42/02 ,  G06T5/002 ,  G06T5/003 ,  G06T5/008 ,  G06T5/50 ,  G06T2207/10116 ,  G06T2207/20016 ,  G06T2207/30004

摘要： A virtual grid imaging method capable of eliminating scattered radiation effect and an imaging system thereof are provided. The method is mainly applicable for imaging with high energy rays, in which scattered rays reaching a surface of a detector are not filtered, and data of the scattered rays and straight rays are all sampled, and then, separation and inhibition of scattered ray component are performed for the sampled data, thereby eliminating the scattered ray component in the resulted image. The method particularly includes the following steps: (1) decomposing a digital image into multi-band images from high to low according to frequencies; (2) performing de-scattering process for low-frequency band images; (3) performing contrast enhancement process for high-frequency band images; and (4) merging the images of various frequency bands processed in the step (2) and the step (3), and forming an output image. Experiment shows that, in digital X-ray imaging, the present invention can obviously eliminate the scattered radiation effect, and meanwhile significantly reduce the dosage of the rays, in which only one third of the required dosage of a common grid is used to obtain the same image brightness.

摘要翻译： 提供了能够消除散射辐射效应的虚拟网格成像方法及其成像系统。 该方法主要适用于高能射线的成像，其中到达检测器表面的散射光未被过滤，并且散射光线和直线的数据都被采样，然后分散和抑制散射光线分量 对采样数据执行，从而消除所得图像中的散射光线分量。 该方法特别包括以下步骤：（1）根据频率将数字图像从高到低分解为多频带图像; （2）对低频带图像进行去散射处理; （3）对高频带图像进行对比度增强处理; 和（4）合并在步骤（2）和步骤（3）中处理的各种频带的图像，并形成输出图像。 实验表明，在数字X射线成像中，本发明可以明显地消除散射辐射效应，同时显着降低光线的使用量，其中只有三分之一的普通电网所需剂量用于获得 相同的图像亮度。

公开(公告)号：US08064676B2

公开(公告)日：2011-11-22

申请号：US12514541

申请日：2007-06-08

申请人： Yunxiang Li ,  Hongguang Cao

发明人： Yunxiang Li ,  Hongguang Cao

IPC分类号： G06K9/00

CPC分类号： A61B6/00 ,  A61B6/5282 ,  G03B42/02 ,  G06T5/002 ,  G06T5/003 ,  G06T5/008 ,  G06T5/50 ,  G06T2207/10116 ,  G06T2207/20016 ,  G06T2207/30004

摘要： A virtual grid imaging method capable of eliminating scattered radiation effect and an imaging system thereof for imaging with high energy rays, in which scattered rays reaching a surface of a detector are not filtered, and data of the scattered rays and straight rays are all sampled. The method includes decomposing a digital image into multi-band images from high to low according to frequencies; performing de-scattering process for low-frequency band images; performing contrast enhancement process for high-frequency band images; and merging the images of various frequency bands processed in the second and third steps, and forming an output image. In digital X-ray imaging the scattered radiation effect is eliminated. Significant reduction of the dosage of the rays, in which only one third of the required dosage of a common grid is used to obtain the same image brightness.

摘要翻译： 能够消除散射辐射效应的虚拟网格成像方法及其成像系统，其中高能射线成像，其中到达检测器表面的散射光未被滤波，并且散射光线和直线的数据都被采样。 该方法包括根据频率将数字图像从高到低分解为多频带图像; 对低频带图像执行去散射处理; 对高频带图像进行对比度增强处理; 并且合并在第二和第三步骤中处理的各种频带的图像，并且形成输出图像。 在数字X射线成像中，消除了散射辐射效应。 明显减少光线的剂量，其中仅使用三分之一的所需剂量的共同网格来获得相同的图像亮度。

公开(公告)号：US11456144B2

公开(公告)日：2022-09-27

申请号：US16910069

申请日：2020-06-24

申请人： Jinhui Xing ,  Zhili Cui ,  Jian Gao ,  Hongguang Cao

发明人： Jinhui Xing ,  Zhili Cui ,  Jian Gao ,  Hongguang Cao

IPC分类号： H01J35/04 ,  H05G1/70 ,  A61B6/00 ,  H01J35/02

摘要： Provided is an arc-shaped multi-focal point fixed anode gate controlled ray source, comprising an arc-shaped ray source housing, a ray tube bracket, a plurality of fixed anode reflected ray tubes and a plurality of gate controlled switches, wherein the plurality of fixed anode reflected ray tubes are fixed on the arc-shaped ray source housing by means of the ray tube bracket, and the focal points of the plurality of fixed anode reflected ray tubes are distributed on the same distribution circle; and the plurality of gate controlled switches are correspondingly connected to the plurality of fixed anode reflected ray tubes. By splicing the plurality of arc-shaped multi-focal point fixed anode gate controlled ray sources into an integral ring stricture, the focal points of all the fixed anode reflected ray tubes therein can be distributed on, the same distribution circle.