公开(公告)号：US07508918B2

公开(公告)日：2009-03-24

申请号：US11525692

申请日：2006-09-22

申请人： Yinong Liu ,  Zhiqiang Chen ,  Yuanjing Li ,  Wanlong Wu ,  Yulan Li ,  Xilei Luo ,  Li Zhang ,  Ziran Zhao ,  Bin Sang ,  Hailin Wang

发明人： Yinong Liu ,  Zhiqiang Chen ,  Yuanjing Li ,  Wanlong Wu ,  Yulan Li ,  Xilei Luo ,  Li Zhang ,  Ziran Zhao ,  Bin Sang ,  Hailin Wang

IPC分类号： G21K1/04

CPC分类号： G21K1/04

摘要： A collimator for adjusting an X-ray beam includes: an up-and-down adjustment mechanism; a left-and-right adjustment mechanism, a supporting member; and an adjusting plate connected with the supporting member. The up-and-down adjustment mechanism comprises first rotating nuts, up-and-down moving leading screws threadedly connected with the first rotating nuts, and upper and lower sliding stops located in the supporting member. Each of the leading screws is connected with the upper and lower sliding stops to drive the upper and lower sliding stops, respectively, to vertically move. The left-and-right adjustment mechanism comprises second rotating nuts, horizontally moving leading screws connected with second rotating nuts, and left and right sliding stops located in the supporting member. Each of the horizontally moving leading screws are connected with the left and right sliding stops to drive the left and right sliding stops, respectively, to horizontally move.

摘要翻译： 用于调整X射线束的准直器包括：上下调节机构; 左右调节机构，支撑构件; 以及与支撑构件连接的调节板。 上下调节机构包括第一旋转螺母，与第一旋转螺母螺纹连接的上下移动的引导螺钉，以及位于支撑构件中的上下滑动止动件。 每个前导螺钉与上下滑动止动件连接以分别驱动上下滑动止动件垂直移动。 左右调节机构包括第二旋转螺母，与第二旋转螺母连接的水平移动的导螺杆，以及位于支撑构件中的左右滑动止动件。 每个水平移动的前导螺钉与左右滑动止动件分别连接以驱动左右滑动止动件水平移动。

公开(公告)号：US20080310598A1

公开(公告)日：2008-12-18

申请号：US12075463

申请日：2008-03-11

申请人： Li Zhang ,  Zhiqiang Chen ,  Guowei Zhang ,  Jianping Cheng ,  Yuanjing Li ,  Yinong Liu ,  Yuxiang Xing ,  Ziran Zhao ,  Yongshun Xiao

发明人： Li Zhang ,  Zhiqiang Chen ,  Guowei Zhang ,  Jianping Cheng ,  Yuanjing Li ,  Yinong Liu ,  Yuxiang Xing ,  Ziran Zhao ,  Yongshun Xiao

IPC分类号： G01D18/00 ,  G06K9/00

CPC分类号： G01T7/005 ,  G01T1/1648

摘要： A method for calibrating a dual-energy CT system and an image reconstruction method are disclosed to calculate images of atomic number and density of a scanned object as well as its attenuation coefficient images at any energy level. The present invention removes the effect from a cupping artifact due to X-ray beam hardening. The method for calibrating a dual-energy CT system is provided comprising steps of selecting at least two different materials, detecting penetrative rays from dual-energy rays penetrating said at least two different materials under different combinations of thickness to acquire projection values, and creating a lookup table in a form of correspondence between said different combinations of thickness and said projection values. The image reconstruction method is provided comprising steps of scanning an object with dual-energy rays to acquire dual-energy projection values, calculating projection values of base material coefficients corresponding to said dual-energy projection values based on a pre-created lookup table, and reconstructing an image of base material coefficient distribution based on said projection values of base material coefficients. In this way, images of atomic number and density of an object as well as its attenuation coefficient images can be calculated from the images of the distribution of base material coefficients. Compared with the prior art technique, the method proposed in the present invention has advantages of simple calibration procedure, high calculation precision and invulnerability to X-ray beam hardening.

摘要翻译： 公开了用于校准双能量CT系统和图像重建方法的方法，以计算被扫描物体的原子序数和密度以及其在任何能级的衰减系数图像的图像。 本发明消除了由于X射线束硬化引起的拔罐伪影的影响。 提供了一种用于校准双能量CT系统的方法，包括以下步骤：选择至少两种不同的材料，从不同厚度的组合穿透所述至少两种不同材料的双能量射线检测穿透射线，以获得投影值， 以所述不同的厚度组合和所述投影值之间的对应形式的查找表。 提供了图像重建方法，包括以下步骤：用双能量射线扫描物体以获取双能量投影值，基于预先创建的查找表计算与所述双能量投影值相对应的基材系数的投影值，以及 基于所述基材系数的投影值重构基材系数分布的图像。 以这种方式，可以从基材系数分布的图像中计算出物体的原子数和密度以及衰减系数图像的图像。 与现有技术相比，本发明提出的方法具有校准过程简单，计算精度高，X射线束硬化无效的优点。

公开(公告)号：US07424089B2

公开(公告)日：2008-09-09

申请号：US11546717

申请日：2006-10-12

申请人： Li Zhang ,  Hewei Gao ,  Zhiqiang Chen ,  Kejun Kang ,  Jianping Cheng ,  Yuanjing Li ,  Yinong Liu ,  Yuxiang Xing ,  Ziran Zhao ,  Yongshun Xiao

发明人： Li Zhang ,  Hewei Gao ,  Zhiqiang Chen ,  Kejun Kang ,  Jianping Cheng ,  Yuanjing Li ,  Yinong Liu ,  Yuxiang Xing ,  Ziran Zhao ,  Yongshun Xiao

IPC分类号： H05G1/60

CPC分类号： G01N23/046 ,  A61B6/032 ,  G01N2223/3303 ,  G01N2223/419 ,  G06T11/006 ,  G06T2211/421

摘要： It is disclosed a system and a method for reconstructing an image by using a straight-line trajectory scan to avoid image spatial resolution reduction due to interpolations in angular direction and detector direction during data rebinning. This system comprises: a projection data conversion section for converting projection data from straight-line trajectory scan into projection data under quasi-parallel-beam scan; a filtration section for obtaining filtered projection data by convoluting the projection data under quasi-parallel-beam scan with a predetermined convolutional kernel; and a back-projection section for reconstructing an image by back-projecting the filtered projection data with a weighting factor. By using the inventive system and method, the spatial resolution in the reconstructed image is improved, and the influence of data truncation on the reconstructed image is reduced. The present invention applies the filtration and back-projection mode, and thus has general advantages of the filtration and back projection, such as simplicity and efficiency. And it is easy to be parallelized and accelerated.

摘要翻译： 公开了一种通过使用直线轨迹扫描来重建图像的系统和方法，以避免在数据重组期间由于在角度方向和检测器方向上的内插而导致的图像空间分辨率降低。 该系统包括：投影数据转换部分，用于将投影数据从直线轨迹扫描转换成准并行束扫描的投影数据; 过滤部分，用于通过用预定的卷积核在准平行束扫描下卷积投影数据来获得经滤波的投影数据; 以及背投影部分，用于通过用加权因子反投影过滤的投影数据来重建图像。 通过使用本发明的系统和方法，改善了重建图像中的空间分辨率，减少了数据截断对重建图像的影响。 本发明应用过滤和反投影模式，因此具有过滤和反投影的一般优点，例如简单性和效率。 并行并行加速很容易。

公开(公告)号：US20070075073A1

公开(公告)日：2007-04-05

申请号：US11523779

申请日：2006-09-19

申请人： Zhiqiang Chen ,  Yuanjing Li ,  Yinong Liu ,  Haifeng Hu ,  Wanlong Wu ,  Yulan Li ,  Xilei Luo ,  Li Zhang ,  Ziran Zhao ,  Bin Sang ,  Hailin Wang

发明人： Zhiqiang Chen ,  Yuanjing Li ,  Yinong Liu ,  Haifeng Hu ,  Wanlong Wu ,  Yulan Li ,  Xilei Luo ,  Li Zhang ,  Ziran Zhao ,  Bin Sang ,  Hailin Wang

IPC分类号： H05B6/76

CPC分类号： E06B5/18 ,  E06B3/42 ,  G21F7/005 ,  G21Y2002/207 ,  G21Y2002/501 ,  G21Y2004/30

摘要： The present invention relates to a radiation inspection system discloses a shielding door device for a radiation inspection system, comprising a door body, two guides located on two opposite sides of the door body, a rack, a gear and a motor. The two guides are fixed on an upper surface of a frame and the door body is movably connected to the two guides via bearings. The rack is fixed on a bottom of the door body and meshed with the gear. The gear is coupled with a shaft of the motor fixed on a lower surface of the frame. With the above configuration, the present invention is advantageous in automatic and complete shielding of the radiation inspection system without interference. In addition the shielding door can be controlled intelligently, so that accidental radiation leakage can be prevented.

摘要翻译： 辐射检查系统技术领域本发明涉及一种辐射检查系统，该辐射检查系统公开了一种用于辐射检查系统的屏蔽门装置，包括门体，位于门体两侧的两个导轨，齿条，齿轮和马达。 两个引导件固定在框架的上表面上，门体通过轴承可移动地连接到两个引导件。 机架固定在门体的底部并与齿轮啮合。 齿轮与固定在框架的下表面上的马达的轴联接。 利用上述结构，本发明在辐射检测系统的自动完全屏蔽和无干扰的情况下是有利的。 此外，可以智能地控制屏蔽门，从而可以防止意外的辐射泄漏。

公开(公告)号：US20060291742A1

公开(公告)日：2006-12-28

申请号：US11472193

申请日：2006-06-21

申请人： Li Zhang ,  Zhiqiang Chen ,  Yuxiang Xing ,  Yuanjing Li ,  Yinong Liu ,  Ziran Zhao ,  Yongshun Xiao

发明人： Li Zhang ,  Zhiqiang Chen ,  Yuxiang Xing ,  Yuanjing Li ,  Yinong Liu ,  Ziran Zhao ,  Yongshun Xiao

IPC分类号： G06K9/40 ,  G06K9/00

CPC分类号： G06T5/40 ,  G06T5/009 ,  G06T2207/10116 ,  G06T2207/30004

摘要： A method of image information enhancement in radiography relates to image information processing techniques in radiography. The method comprising steps of: normalizing an acquired image A(x,y) to form a normalized image B(x,y); filtering the normalized image B(x,y) by a low-pass filter to obtain an filtered image C(x,y); calculating a relative standard deviation for each pixel in the image A(x,y), three times the relative standard deviation being an edge threshold for each pixel; thresholding a difference image obtained by subtracting the filtered image C(x,y) from the normalized image B(x,y) by using the edge threshold for each pixel to form a threshold-processed image D(x,y); enhancing a contrast of the threshold-processed image D(x,y) by using a non-linear function to form a contrast-enhanced image E(x,y); determining a enhancement coefficient a(x,y); obtaining a edge-enhanced image F(x,y) by multiplying the enhancement coefficient a(x,y), the contrast-enhanced image E(x,y) and the filtered image C(x,y); and generating a resulting image by multiplying a sum of the edge-enhanced image F(x,y) and the filtered image C(x,y) with the maximum value Amax As compared with the prior arts, the inventive method has a fast processing speed for image information enhancement and a simple algorithm, images clearly, eliminates noises in the images, and satisfies the requirements of relatively more enhancement to the contrast of the dark regions in the scanned images.

摘要翻译： 射线照相术中图像信息增强的方法涉及放射照相术中的图像信息处理技术。 该方法包括以下步骤：归一化所获取的图像A（x，y）以形成归一化图像B（x，y）; 通过低通滤波器对归一化图像B（x，y）进行滤波，得到滤波图像C（x，y）; 计算图像A（x，y）中每个像素的相对标准偏差，相对标准偏差的三倍是每个像素的边缘阈值; 通过使用每个像素的边缘阈值来从归一化图像B（x，y）中减去滤波图像C（x，y）获得的差分图像，以形成阈值处理图像D（x，y）; 通过使用非线性函数来增强阈值处理图像D（x，y）的对比度，以形成对比度增强图像E（x，y）; 确定增强系数a（x，y）; 通过将增强系数a（x，y），对比度增强图像E（x，y）和滤波图像C（x，y）相乘来获得边缘增强图像F（x，y） 并且通过将边缘增强图像F（x，y）和滤波图像C（x，y）的和乘以最大值A最大值来产生所得到的图像。与现有技术相比， 本发明的方法具有图像信息增强的快速处理速度和简单的算法，图像清晰，消除了图像中的噪声，并且满足了对扫描图像中的暗区域的对比度相对更加增强的要求。

公开(公告)号：US20060239402A1

公开(公告)日：2006-10-26

申请号：US11286559

申请日：2005-11-23

申请人： Haifeng Hu ,  Yuanjing Li ,  Kejun Kang ,  Zhiqiang Chen ,  Yinong Liu ,  Yulan Li ,  Li Zhang ,  Wanlong Wu ,  Ziran Zhao ,  Xilei Luo ,  Bin Sang

发明人： Haifeng Hu ,  Yuanjing Li ,  Kejun Kang ,  Zhiqiang Chen ,  Yinong Liu ,  Yulan Li ,  Li Zhang ,  Wanlong Wu ,  Ziran Zhao ,  Xilei Luo ,  Bin Sang

IPC分类号： G01N23/06 ,  G01N23/04 ,  G01B15/02

CPC分类号： G01N9/24 ,  G01N2001/022

摘要： A CT method and an apparatus for liquid safety-detection with a radiation source relate to a radiation imaging detecting technology field. The invention comprises using a radiation source, a detector and data collector, a computer data processor; and the main steps are: 1) a liquid article to be detected being placed onto a rotary platform which is rotatable; 2) the ray emitted from the radiation source passing through the liquid article, and being received and formed into projection data by the detector and data collector; and 3) the projection data being transmitted to the computer data processor, which processes it to obtain the liquid density of the detected article, compares the result with the densities of dangerous articles in a current database, and then visually displays the detected information of the detected liquid article. Comparing to the prior art, the invention has a small volume, a strong anti-interference, a high accuracy of detection, an easy shielding, and a high use safety and reliability.

公开(公告)号：US09194827B2

公开(公告)日：2015-11-24

申请号：US13519305

申请日：2010-06-28

申请人： Kejun Kang ,  Zhiqiang Chen ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Wanlong Wu ,  Dong Lin ,  Le Tang ,  Chao Tu ,  Zongjun Shen ,  Guangwei Ding ,  Yingkang Jin ,  Xilei Luo ,  Shuo Cao

发明人： Kejun Kang ,  Zhiqiang Chen ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Wanlong Wu ,  Dong Lin ,  Le Tang ,  Chao Tu ,  Zongjun Shen ,  Guangwei Ding ,  Yingkang Jin ,  Xilei Luo ,  Shuo Cao

IPC分类号： G01N23/203 ,  G21K1/04

CPC分类号： G01N23/203 ,  G21K1/043

摘要： Disclosed is a scanning device using radiation beam for backscatter imaging. The scanning device includes a radiation source; a stationary shield plate and a rotary shield body positioned respectively between the radiation source and the subject to be scanned, wherein the stationary shield plate is fixed relative to the radiation source, and the rotary shield body is rotatable relative to the stationary shield plate. The ray passing area permitting the rays from the radiation source to pass through the stationary shield plate is provided on the stationary shield plate, and ray incidence area and ray exit area are respectively provided on the rotary shield body. During the process of the rotating and scanning of the rotary shield body, the ray passing area of the stationary shield plate intersects consecutively with the ray incidence area and the ray exit area of the rotary shield body to form scanning collimation holes. Further, a scanning method using radiation beam for backscatter imaging is also provided.

摘要翻译： 公开了使用用于反向散射成像的辐射束的扫描装置。 扫描装置包括辐射源; 分别位于辐射源和待扫描对象之间的固定屏蔽板和旋转屏蔽体，其中固定屏蔽板相对于辐射源固定，并且旋转屏蔽体可相对于固定屏蔽板旋转。 在固定屏蔽板上设置允许来自辐射源的光线通过固定屏蔽板的射线通过面积，并且在旋转屏蔽体上分别设置射线入射区域和射出口区域。 在旋转屏蔽体的旋转和扫描过程中，固定屏蔽板的射线通过面积与旋转屏蔽体的射线入射面积和射线出射面积连续相交，形成扫描准直孔。 此外，还提供了使用用于反向散射成像的辐射束的扫描方法。

公开(公告)号：US08983033B2

公开(公告)日：2015-03-17

申请号：US13142668

申请日：2011-04-28

申请人： Zhiqiang Chen ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Wanlong Wu ,  Li Zhang ,  Chao Tu ,  Le Tang ,  Yingkang Jin ,  Shuo Cao ,  Guangwei Ding

发明人： Zhiqiang Chen ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Wanlong Wu ,  Li Zhang ,  Chao Tu ,  Le Tang ,  Yingkang Jin ,  Shuo Cao ,  Guangwei Ding

IPC分类号： G01N23/203

CPC分类号： G01N23/203

摘要： The present invention discloses a scanning device of back-scatter imaging with a radiation beam, comprising: a radiation source; a fixed shield plate and a rotatable shield body disposed between the radiation source and a object to be scanned respectively, wherein the fixed shield plate is stationary with respect to the radiation source and the rotatable shield body is rotatable with respect to the fixed shield plate. The fixed shield plate is provided with a ray passing-through region thereon, which allows for a radiation beam from the radiation source to pass through the fixed shield plate, a ray incidence region and a ray emergence region are arranged on the rotatable shield body respectively, during the rotatable scanning of the rotatable shield body, the ray passing-through region of the fixed shield plate continuously intersects with the ray incidence region and the ray emergence region of the rotatable shield body to generate collimated holes for scanning. The ray passing-through region of the fixed shield plate is a rectilinear slit, the rotatable shield body is a cylinder, and the ray incidence and emergence regions are configured to be a series of small discrete holes disposed along a spiral line respectively. In addition, the present invention discloses a scanning method for back-scatter imaging with a radiation beam.

摘要翻译： 本发明公开了一种具有辐射束的背散射成像的扫描装置，包括：辐射源; 固定屏蔽板和设置在辐射源和待扫描物体之间的可旋转屏蔽体，其中固定屏蔽板相对于辐射源是静止的，并且可旋转屏蔽体相对于固定屏蔽板可旋转。 固定屏蔽板在其上设有射线通过区域，其允许来自辐射源的辐射束穿过固定屏蔽板，射线入射区域和射线出射区域分别布置在可旋转屏蔽体上 在可旋转的屏蔽体的可旋转扫描期间，固定屏蔽板的光线通过区域与可旋转屏蔽体的射线入射区域和射线出射区域连续相交，以产生用于扫描的准直孔。 固定屏蔽板的光线通过区域是直线狭缝，可旋转的屏蔽体是圆柱体，射线入射区域和出射区域分别被配置成沿着螺旋线设置的一系列小的分立孔。 此外，本发明公开了一种利用辐射束进行背散射成像的扫描方法。

公开(公告)号：US08513615B2

公开(公告)日：2013-08-20

申请号：US13126067

申请日：2010-12-29

申请人： Zhiqiang Chen ,  Ziran Zhao ,  Yuanjing Li ,  Wanlong Wu ,  Yinong Liu ,  Li Zhang ,  Dong Lin ,  Zongjun Shen ,  Xilei Luo ,  Zhimin Zheng ,  Yingkang Jin ,  Shuo Cao ,  Bin Sang

发明人： Zhiqiang Chen ,  Ziran Zhao ,  Yuanjing Li ,  Wanlong Wu ,  Yinong Liu ,  Li Zhang ,  Dong Lin ,  Zongjun Shen ,  Xilei Luo ,  Zhimin Zheng ,  Yingkang Jin ,  Shuo Cao ,  Bin Sang

IPC分类号： G01J5/02

CPC分类号： G01V8/005 ,  G01K11/006 ,  G01N22/00

摘要： The present invention discloses a millimeter-wave inspection apparatus. The millimeter-wave inspection apparatus comprises: optics devices, configured to receive millimeter-wave energy radiated from an object to be inspected and focus the received millimeter-wave energy; a radiometer receiving device configured to receive the focused millimeter-wave energy and transform the millimeter-wave energy into electrical signal; and an imaging device configured to generate a temperature image of the object to be inspected based on the electrical signal. Compared with the prior art, the millimeter-wave inspection apparatus of the present invention has a simple and compact structure; it would not be harmful to the human health by employing the passive millimeter-wave human body security inspection technology. With the above configuration, the contraband items to be concealed within the human clothing can be efficiently and effectively detected.

摘要翻译： 本发明公开了一种毫米波检测装置。 毫米波检查装置包括：光学装置，被配置为接收从待检查物体辐射的毫米波能量并聚焦接收的毫米波能量; 辐射计接收装置，被配置为接收聚焦的毫米波能量并将毫米波能量转换成电信号; 以及成像装置，被配置为基于所述电信号生成所述待检查对象的温度图像。 与现有技术相比，本发明的毫米波检测装置具有简单紧凑的结构; 采用被动毫米波人体安全检测技术对人体健康无害。 通过上述结构，能够有效且高效地检测隐藏在人体衣物中的违禁物品。

公开(公告)号：US08362422B2

公开(公告)日：2013-01-29

申请号：US13142500

申请日：2011-04-27

申请人： Qingjun Zhang ,  Zhiqiang Chen ,  Shiping Cao ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Yan Zheng ,  Shaoji Mao ,  Xiang Zou ,  Jianping Chang

发明人： Qingjun Zhang ,  Zhiqiang Chen ,  Shiping Cao ,  Yuanjing Li ,  Ziran Zhao ,  Yinong Liu ,  Yan Zheng ,  Shaoji Mao ,  Xiang Zou ,  Jianping Chang

IPC分类号： H01J49/40 ,  H01J49/14 ,  G01N27/64

CPC分类号： G01N27/622

摘要： The present invention discloses a sample feeding device for an ion mobility spectrometer, which is adapted to guide a sample to be detected into an inlet of a drift tube of the ion mobility spectrometer. The sample feeding device comprises a solid sample feeding component; a sample inlet component; a attachment component, wherein the solid sample feeding component has an internal cavity defined therein, one end of the solid sample feeding component is communicated with the sample inlet component through the internal cavity, while the other end is communicated with the inlet of the ion drift tube through the attachment component; and a gaseous sample feeding component, comprising a body and an external attachment component, the body has a gas channel therein, and the external attachment component includes an inlet hole which is communicated with the gas channel, wherein when the external attachment component is fitted with the sample inlet component, the body is inserted into the internal cavity, so that a channel of the solid sample feeding component is closed, and only the gas channel of the gaseous sample feeding component is communicated with the inlet of the drift tube of the ion mobility spectrometer.

摘要翻译： 本发明公开了一种用于离子迁移谱仪的样品供给装置，其适于将待检测样品引导到离子迁移谱仪的漂移管的入口中。 样品供给装置包括固体样品供给部件; 样品入口组件; 附着部件，其中固体样品进料部件具有限定在其中的内部空腔，固体样品供给部件的一端通过内部空腔与样品入口部件连通，而另一端与离子漂移入口连通 管穿过附件; 以及气体样品供给部件，其包括主体和外部附接部件，所述主体在其中具有气体通道，并且所述外部附接部件包括与所述气体通道连通的入口孔，其中当所述外部附接部件装配有 样品入口部件，主体插入到内腔中，使得固体样品供给部件的通道关闭，并且仅气态样品供给部件的气体通道与离子的漂移管的入口连通 移动光谱仪。