WO2014044078A1 - 一种行李物品ct安检系统及其探测器装置 - Google Patents

一种行李物品ct安检系统及其探测器装置 Download PDF

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Publication number
WO2014044078A1
WO2014044078A1 PCT/CN2013/079381 CN2013079381W WO2014044078A1 WO 2014044078 A1 WO2014044078 A1 WO 2014044078A1 CN 2013079381 W CN2013079381 W CN 2013079381W WO 2014044078 A1 WO2014044078 A1 WO 2014044078A1
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WO
WIPO (PCT)
Prior art keywords
detector
security system
ray source
scanning channel
baggage
Prior art date
Application number
PCT/CN2013/079381
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English (en)
French (fr)
Inventor
陈志强
李元景
张丽
张金宇
段占军
冉龙松
黄清萍
Original Assignee
同方威视技术股份有限公司
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Application filed by 同方威视技术股份有限公司 filed Critical 同方威视技术股份有限公司
Priority to ES13839779T priority Critical patent/ES2836755T3/es
Priority to AU2013317476A priority patent/AU2013317476B2/en
Priority to BR112015005192-8A priority patent/BR112015005192B1/pt
Priority to US14/355,240 priority patent/US9864091B2/en
Priority to JP2015531431A priority patent/JP6033961B2/ja
Priority to EP13839779.9A priority patent/EP2899537B1/en
Priority to KR1020157009860A priority patent/KR101684201B1/ko
Publication of WO2014044078A1 publication Critical patent/WO2014044078A1/zh

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G01V5/226—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays using tomography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • A61B6/035—Mechanical aspects of CT
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G01V5/224—Multiple energy techniques using one type of radiation, e.g. X-rays of different energies

Definitions

  • a baggage article CT security inspection system and a detector device thereof A baggage article CT security inspection system and a detector device thereof.
  • the present invention relates to a detector device for a baggage article CT security system. More particularly, the present invention relates to a detector apparatus for use in fast small size CT imaging techniques that achieves a higher scanning speed while maintaining optimum device form factor requirements. In addition, the present invention also relates to a luggage item including the above detector device
  • CT computed tomography
  • the general CT equipment consists of an X-ray source, a calibration device, a rotating slip ring, a detecting component, a dedicated computer system for data calculation, a power supply and a control system.
  • the main factors affecting the CT performance and the device dimensions include the source, calibration.
  • the detecting components are generally distributed in the same circumferential segment centered on the target of the radiation source, so that the range of P values received by the detector components in the same time is similar, thereby reducing the work of subsequent algorithm processing. the amount.
  • some designers have simply divided the detector into several sections, which can appropriately reduce the width of the device, but does not completely solve the influence of the detector arrangement on the width dimension of the device.
  • the simple segmentation of the detector crystals will inevitably result in data acquisition and control by different control boards and acquisition modules. To control the implementation, the user needs to solve the impact of different acquisition timings and transmissions, which is unfavorable to the entire data acquisition process, which hinders the rapid scanning of the CT system. Summary of the invention
  • the object of the present invention is to solve at least one of the above problems and deficiencies existing in the prior art.
  • One of the objects of the present invention is to provide a novel detector arrangement for a CT system, which effectively solves the technical bottleneck of miniaturization faced by CT technology around the layout of the scanning channel.
  • Another object of the present invention is to provide a novel CT security inspection system for baggage articles, which adopts the above-mentioned detector arrangement mode, and arranges a plurality of sets of detectors in the axial direction of the scanning channel, and realizes on the basis of miniaturization.
  • the speed of scanning is fast.
  • a fast, small-sized luggage article CT security system comprising: a scanning channel through which baggage items enter and exit the baggage item CT security system; a side X-ray source; a detecting arm frame disposed on an opposite side of the scanning channel, the plurality of detector assemblies being mounted on the detecting arm frame, wherein: at least one of the plurality of detecting components is on the detecting component a first apex of a set of detector crystal receiving faces is located on an arc centered on the center of the scanning channel, and the plurality of detector components are sequentially connected; and the detector crystals of the plurality of detector components are all
  • the receiving surface is in the range of a radial beam centered on the target point, and at least one set of the detector crystal receiving surface midpoint of each detector assembly is perpendicular to the detector crystal receiving surface .
  • the detection arm frame is arranged centering on the size of the baggage scanning channel, and the detector assembly is arranged.
  • the center of the scanning channel is on the arm of the center of the circle.
  • the arrangement of the rotation center of the CT slip ring and the arrangement center of the detection component can be substantially coincident, which can effectively reduce the rotation diameter of the CT slip ring rotating body, and can more effectively reduce the finality of the device. width.
  • each detector assembly is rotated at a certain angle from the first vertex at the time of installation, so that the target of the X-ray source of the CT is The line connecting the midpoints of the detector crystal on the detector assembly is perpendicular to the receiving surface of the detector crystal, thereby increasing the sensitivity of the detector system acquisition.
  • the integrated processing of the detection boom can be guaranteed. All the acquisition and control circuits are in one detection arm, which reduces the influence of data asynchronous on the performance of the detector and improves the availability of the system.
  • each detector component may comprise more than two sets of detector crystals along the axial direction of the scanning channel, and the minimum angle between the line source target and the midpoint of the detector crystal receiving surface and the receiving surface shall be More than 85 ° to reduce The effect of edge scatter on the data collected by the detector.
  • the emission angle of the X-ray source is at least larger than an angle between a target point of the X-ray source and a line connecting the ends of the first and last detector crystal receiving faces on the circular arc.
  • the effective scanning area of the scanning channel is within an angle of the angle between the target of the X-ray source and the line at the end of the first and second detector crystals on the circular arc.
  • more than two sets of detector crystals can be arranged on each detector assembly, and the distance between each set of detector crystals is related to the belt transport speed, the slip ring speed, and the acquisition frequency of the detector.
  • the distance between each group of detector crystals shall be not less than 20 mm/s.
  • each detector assembly may include a support frame; a high-density radiation shielding plate connected to the support frame; and a plurality of sets of detector crystals disposed on the high-density radiation shielding plate facing the X-ray source side .
  • the baggage article CT security system further includes: an acquisition control module for collecting signals from the plurality of detection components; an encoding system for recording a rotation angle of the slip ring; and controlling radiation emission of the X-ray source and the The electrical control module of the signal acquisition operation, wherein the control module and the acquisition module are installed in the same detection arm frame.
  • the baggage article CT security system further includes: first and second collimators, the collimator includes a plurality of grids, and the beam for the X-ray source is decomposed into Multiple fan beams.
  • the baggage article CT security system further includes: a detector crystal mounting bracket, wherein a plurality of detector crystals are mounted on the detector crystal mounting bracket along an axial direction of the scanning channel, The plurality of fan beam beams decomposed by the straightener correspond to the receiving faces of the plurality of detector crystals, and ensure that the tomographic data of the plurality of columns of the scanned objects can be simultaneously acquired in the axial direction of the scanning channel at the same time.
  • the first collimator grid is a point-like fitting curve related to the radiation dose distribution, wherein the grid slit is narrower and the grid slit at the edge is wider to adjust the beam
  • the doses are such that the intensity ranges at the receiving faces of the crystals of the different detectors are substantially the same.
  • the first collimator may include a plurality of grids along the direction of belt transport, and the number of grids and the distance between the grids should be the number of columns of the detector and the detector receiving surface adjacent to the belt conveying direction. The distance between them is the same.
  • the high-density radiation shielding plate in the detector assembly comprises lead, tungsten-nickel-iron alloy or steel.
  • the first collimator grid is provided with a plurality of slits, and the number of the slits is at least two.
  • the baggage claim CT security system further includes a slip ring system surrounding the scan channel, wherein the X-ray source and the probe arm are mounted on the slip ring system and surround the scan channel Center rotation.
  • an X-ray source and a first collimator are mounted at a position on the CT scanning arm that corresponds to the detector assembly.
  • the first collimator can pass the X-ray entering the scanning sector by a cone beam
  • the stream is decomposed into a plurality of rows of fan beams of a certain angular coverage, and each fan beam corresponds to a set of detector crystal receiving faces. Therefore, when the X-ray source target emits X-rays, the detector can simultaneously obtain the X-ray beams transmitted from the corresponding tomographic positions of the plurality of groups of scanned objects without occlusion, and detect the X-ray signals on the corresponding column detectors. Accumulated, converted into an electrical signal, converted into a digital signal by gain adjustment, and reconstructed by computer system data to obtain characteristic data in different angular directions within the same fault of the object under inspection.
  • the CT security scanning device since the distance of the target point from the receiving surface of the detecting body is much larger than the distance between the crystals of each group of detectors, it can be considered that the data information collected by each group of probes respectively correspond to the data information in the adjacent fault layer. That is, the tomographic data of a plurality of sets of scanned objects can be obtained in one pass, thereby improving the scanning speed of the CT.
  • a detector apparatus for a baggage article CT security system wherein the detector device of the CT security system includes a scanning channel through which baggage items enter and exit the baggage An article detector device; an X-ray source disposed on a side of the scanning channel; and a detecting arm frame disposed on an opposite side of the scanning channel for mounting the detector device, wherein the detector device comprises: a plurality of a detector assembly, at least one set of detector crystals having a first apex on a circular arc centered on a center of the scanning channel, and the plurality of detector assemblies are sequentially connected; and All of the receiving surfaces of the detector crystal in the detector assembly are in the range of a radial beam of rays centered at the target point, and at least one of the receiving surface midpoints of the detector crystal and the source target in each detector assembly The line is perpendicular to the detector crystal receiving surface.
  • a light material for protecting against light and dust is installed between all the receiving surfaces of the detector crystal and the target of the radiation source, for shielding visible light, and preventing dust from falling on the receiving surface of the detector crystal.
  • Lightweight materials that are protected from light and dust include, but are not limited to, polytetrafluoroethylene, plastic, bakelite, and aluminum foil.
  • At least one set of detector crystals on each detector assembly has a first vertex located on an arc centered on a center point of the scanning channel, and at least one set of detections in each detector assembly
  • the midpoint of the receiving surface of the crystal is perpendicular to the receiving surface of the detector crystal, and the detector assembly is arranged end to end. All receiving surfaces of all detector crystals are in the radial beam range.
  • the inventor can ensure the stability of the P value data of the receiving surface of the detector crystal by computer data correction, and reduce the ray intensity. influences.
  • Figure 1 is a schematic view of a CT security system in accordance with an embodiment of the present invention.
  • Figure 2 is a schematic perspective view showing the main components of the CT security system.
  • Figure 3 is a schematic view showing the arrangement of the detector components of the vertical scanning channel.
  • 4 is an enlarged schematic view showing a specific structure of the probe assembly of FIG. 3, which is a schematic structural view of the detector device shown in a plan view.
  • a luggage security CT security system in accordance with an embodiment of the present invention, comprising: a scanning channel 2 or 6 through which baggage items (not shown) enter The baggage article CT security system; an X-ray source 8 disposed between the inlet scanning channel 2 and the exit scanning channel 6 ; a detection arm frame 5 disposed on an opposite side of the X-ray source 8, a plurality of detector assemblies 20 Mounted on the detection boom 5, characterized in that: each of the plurality of detector assemblies has at least one set of first vertices 18 or 23 of the detector crystal receiving surface, located at the center of the scanning channel center 21 a distribution circle 22, and the plurality of detector assemblies are sequentially connected; and the receiving surface 16 or 24 of the detector crystal of the plurality of detector assemblies is in a radial ray centered on the target of the radiation source Within the range of the beam, and at least one set of detector crystal receiving faces, the midpoint 17 or 25 of the detector crystal receiving surface is perpendicular to the detector crystal receiving face 16 or 24.
  • At least one of the first vertices 18 or 23 of the detector crystal receiving surface of each detector assembly is located on a circular arc surface 22 centered on the center point of the scanning channel, and the detector components are sequentially connected. Arrangement, all of the receiving faces 16 or 24 of the detector crystal are within the radial beam of rays centered at the X-ray source target.
  • the present invention starts from the image to be scanned by the CT technology and obtains the image of the scanned baggage.
  • the detection arm frame 5 is arranged at the center point 22 of the baggage passage, and the detector assembly is continuously arranged.
  • the CT slip ring 3 can be effectively reduced by overlapping the center of rotation of the slip ring 3 with the center of the arrangement of the detector assembly 20.
  • the rotating diameter of the rotating body which in turn enables the minimum equipment size under rotating CT conditions.
  • the detector crystals on each detector assembly 20 are mounted as the first apex 18 of the detector crystal receiving face during installation.
  • Or 23 is a certain angle of rotation of the center of the circle, ensuring that the line 15 of the X-ray source 8 and the midpoint 17 or 25 of at least one set of detector crystal receiving faces 16 or 24 on the detector assembly are perpendicular to the detector assembly.
  • the corresponding detector crystal receiving surface 16 or 24 is realized, and the integrated processing of the detecting arm frame 5 is realized. All the data obtained by the detector crystal and the electrical control module 34 are located in one detecting arm, thereby ensuring that the X-ray reaches the detector.
  • the stability of the crystal receiving surface improves the sensitivity of the detector system acquisition.
  • each detector component 20 may include more than one set of detector crystals 30, and the radiation source target 15 is connected to the midpoint of the detector crystal receiving surface 32 and the receiving surface.
  • the minimum angle of 32 should be greater than or equal to 85 °.
  • the emission angle of the X-ray source 8 is at least larger than the angle 26 between the X-ray source target 15 and the ends 16A, 25A of the two detector crystal receiving faces on the arc.
  • the effective scanning area 19 of the scanning channel is located in the clip of the line 15 of the X-ray source and the line connecting the ends of the first and second detector crystal receiving faces of the detector assembly 16A, 25A. Within the angular range.
  • the number of detector assemblies of the detector area 11 on the probe boom 5 can satisfy the coverage of the entire scan channel effective area 19, thereby eliminating the defect of imaging incompleteness.
  • the upper surface of the conveyor system 1 must be located within the active area of the scanning channel 2 or 6, ensuring that all items on the conveyor belt can be beamed by the X-ray source. cover.
  • the detector crystal receiving surface 32 of each detector crystal 30 is substantially consistent with the main beam direction of the ray, thereby increasing each detector.
  • the effective amount of radiation acquired by the crystal 30 reduces scattering from the side of the detector crystal and improves the imaging quality of the CT device. As shown in FIG.
  • the detecting arm frame 5 can be mounted on the rotatable detecting arm mounting plate 12 of the slip ring system 3, and the detecting arm mounting plate 12 is mounted in the slip ring supporting frame 13, It is driven by a slip ring drive motor 14.
  • the detector assembly 20, the CT X-ray source 8 and the CT first collimator 9, and the second collimator 10 are mounted on the probe boom 5.
  • the system only includes a detection arm frame 5, the detection arm frame is a closed arm frame, and a data acquisition/control module 34 is installed inside, and all the CT data acquisition systems can adopt a set of data acquisition modules. And the control module, and further, all of the collected data can be processed by a set of algorithms, thereby increasing the speed at which the CT device performs the scanning operation and increasing the speed of data transmission and processing.
  • each detector assembly may include a detector crystal mounting bracket 27; a high-density radiation shield 28 connected to the detector mounting bracket; and a detector disposed on the inner support 31 of the detector assembly facing the X-ray source 8 - side detector crystal 30.
  • the high-density radiation shield 22 of the detector assembly may contain materials such as lead, tungsten-nickel-iron alloy or steel, and the thickness thereof should meet the requirements for environmental radiation leakage indicators in the corresponding standards.
  • FIG. 5 is a schematic view showing the structure of the detector assembly shown in a plan view.
  • the baggage item CT security system further includes: a first collimator 9 including a collimator grid 39 for decomposing the beam from the X-ray source 8 and controlling the output X-beam of each grid Flow energy intensity; and a second collimator 10 on which the grid 37 is used to shield the X-rays incident on the detector assembly to ensure that the X-rays arriving at the receiving surface of the detector crystal are derived from the detector crystal The receiving surface, rather than the scattering of the edge of the detector crystal receiving surface. As shown in FIG.
  • the first collimator grid 39 includes at least two partitions for splitting the beam of rays emitted by the X-ray source 8 into two or more fan beams.
  • a plurality of detector crystals 30 are mounted on the detector crystal mounting bracket 27 in the direction of the scanning channel 2 or 6, the decomposed fan beam and the The receiving faces of the detector crystals 30 are in one-to-one correspondence, so that the collected data of the plurality of columns of detectors can be simultaneously acquired in the direction along the scanning channel.
  • the plurality of detector assemblies may be comprised of a plurality of detector crystal 30 modules that are mounted to the detector mounting box 35 by a detector crystal mounting bracket 27 that requires sealing to reduce light, dust, and ambient humidity. Interference in the performance of the detector crystal.
  • the detector mounting box 35 is further mounted to the CT detector boom by a connecting bracket 42.
  • a dust-proof visor 38 is mounted on the X-ray source target in front of the receiving surface of the detector crystal, preferably, the thickness thereof is not more than 3 mm.
  • the material of the dust visor is a lightweight material, including but not limited to Teflon, plastic, bakelite, and aluminum foil.
  • the first collimator grid 39 is a point-like fitting curve associated with the ray energy distribution, wherein the grid slits are narrower and the grid seams at the edges are wider to allow arrival Different The energy intensity at the receiving surface of the detector crystal is substantially the same.
  • the first collimator grid 39 is provided with a plurality of slits, the number of slits being at least two, such as three slits as shown in FIG.
  • the baggage item (not shown enters the CT security system through the entrance scanning channel, triggers the entrance light barrier, and the system control module issues an acquisition command.
  • the CT scanning arm frame 5 rotates with the slip ring 3
  • the X-ray source 8 of the CT portion emits an X-ray beam
  • the first beam collimator 9 as a front energy calibration device divides the energy beam into a plurality of columns of fan-shaped X-ray beams
  • the CT detector assembly 20 starts collecting X-ray data.
  • the data processing center reconstructs the 3D image of the data to obtain a tomographic image of the CT.

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Abstract

本发明提供一种行李物品CT安检系统，其包括：扫描通道，其中行李物品通过所述扫描通道进出所述行李物品CT安检系统；设置在扫描通道一侧的X射线源；设置在所述扫描通道相对一侧的探测臂架，多个探测器组件安装在探测臂架上，其特征在于：所述多个探测组件中的每个探测组件上至少有一组探测器晶体接收面的首顶点位于以扫描通道中心为圆心的一个圆弧上，且所述多个探测组件依次相连排布；以及所述多个探测组件中的探测器晶体所有接收面处于以靶点为圆心的放射状射线束的范围内，并且在每个探测组件中至少有一组探测器晶体的接收面中点与X射线源靶点的连线垂直于探测器晶体接收面。

Description

一种行李物品 CT安检系统及其探测器装置 本申请要求了 2012年 9月 19日提交的、 申请号为 201210350516. X、 发明名称为 "一 种行李物品 CT安检系统及其探测器装置"的中国专利申请的优先权， 其全部内容通过引用 结合在本申请中。
技术领域
本发明涉及一种用于行李物品 CT安检系统的探测器装置。 更具体地， 本发明涉及一 种应用于快速小尺寸 CT成像技术的探测器装置，其在保证最佳的设备外形尺寸要求的前提 下， 能够实现较高的扫描速度。 另外， 本发明还涉及一种包括上述探测器装置的行李物品
CT安检系统。 背景技术
在基于 X射线辐射成像的计算机断层扫描技术 （简称 " CT技术"） 中， 通过 CT数据 重建可以得到断层内的被扫描物质的特征分布数据， 通过对特征数据进行分析， 可实现对 行李中常见的嫌疑物质进行识别。 在行李物品安检领域， 提高安检机的扫描速度， 减少设 备的占地， 特别是设备的宽度， 是影响计算机断层扫描技术 （简称 " CT 技术"） 在安检领 域大量应用的关键因素。
一般的 CT设备包含 X射线源、 校准装置、 旋转滑环、 探测部件、 进行数据计算的专 用计算机系统、供电及控制系统等组成， 其中影响 CT性能及设备外形尺寸的主要因素包含 射线源、 校准装置及探测部件的布局方式。 在上述各种因素中， 探测部件的排布方式直接 决定垂直于通道方向的设备宽度尺寸， 因而备受重视。
在传统的 CT结构中， 一般将探测部件分布在以射线源靶点为中心的同一圆周段内， 这样同一时间内射线束被探测器部件接收到的 P值范围相近， 从而减少后续算法处理的工 作量。 另外， 部分设计厂家将探测器简单地分为几段， 这样可以适当降低设备的宽度， 但 并未彻底解决探测器排布对设备宽度尺寸的影响。 此外， 由于探测器晶体大多需要密封使 用， 对探测器晶体的简单分段势必造成数据采集以及控制分别由不同的控制板和采集模块 来控制实现， 需要用户解决不同采集时序、 传输造成的影响， 对整个数据采集过程不利， 进而妨碍了 CT系统扫描的快速化。 发明内容
鉴于此， 本发明的目的旨在解决现有技术中存在的上述问题和缺陷中的至少一个方 面。
本发明的目的之一在于提供一种新颖的用于 CT系统的探测器排布方式， 围绕扫描通 道的布局， 有效解决了 CT技术所面临的小型化的技术瓶颈。
本发明的另一目的之一在于提供一种新型的行李物品 CT安检系统， 其采用了上述探 测器排布方式， 在扫描通道轴向方向布置多组探测器， 同时在小型化的基础上实现了扫描 的快速化。
根据本发明的一个方面， 其提供一种快速、 小尺寸的行李物品 CT安检系统， 其包括： 扫描通道， 其中行李物品通过所述扫描通道进出所述行李物品 CT安检系统； 设置在扫描通 道一侧的 X射线源； 设置在所述扫描通道相对一侧的探测臂架， 多个探测器组件安装在探 测臂架上， 其特征在于： 所述多个探测组件中的每个探测组件上至少有一组探测器晶体接 收面的首顶点位于以扫描通道中心为圆心的一个圆弧上， 且所述多个探测器组件依次相连 排布； 以及所述多个探测器组件中的探测器晶体所有接收面处于以靶点为圆心的放射状射 线束的范围内， 并且在每个探测器组件中至少有一组探测器晶体接收面的中点与射线源靶 点的连线垂直于探测器晶体接收面。
在本发明的上述技术方案中， 从 CT技术所要解决的目的 （扫描行李得到被扫描行李 的图像） 出发， 以行李扫描通道尺寸为中心来排布探测臂架， 将探测器组件排布在以扫描 通道中心为圆周中心的臂架上。 在实现的 CT安检系统中， 利用此排布可实现 CT滑环的旋 转中心与探测组件的排布中心基本重合， 可有效降低 CT滑环旋转体的旋转直径， 可以更高 效地减少设备的最终宽度。
同时， 为保证所有的探测器接收面能够与射线源发射的射线束垂直， 在安装时将每个 探测器组件以首顶点为圆心进行一定角度的旋转，使 CT的 X射线源的靶点与探测器组件上 的探测器晶体接收面中点的连线垂直于探测器晶体的接收面， 从而提高了探测器系统采集 的灵敏度。 同时可以保证探测臂架的一体化加工， 所有的采集和控制电路均处于一个探测 臂内， 降低数据不同步对探测器性能的影响， 提高系统的可用度。
在上述技术方案中， 沿扫描通道轴向方向， 每个探测器组件可包含二组以上的探测器 晶体， 射线源靶点与探测器晶体接收面中点连线与接收面的最小夹角应大于 85 ° ， 以减少 边缘散射对探测器所采集数据的影响。
优选地， 所述 X射线源的发射角至少大于所述 X射线源的靶点与所述圆弧上首、末两 个探测器晶体接收面末端处连线的夹角。
优选地，所述扫描通道的有效扫描区域位于所述 X射线源的靶点与所述圆弧上首末两 个探测器晶体的末端处的连线的夹角范围内。
在一种具体实施方式中， 每一探测器组件上可排布 2组以上探测器晶体， 每组探测器 晶体之间的距离与皮带传送速度、 滑环转速以及探测器的采集频率相关。 当皮带传送速度 大于 0. lm/s , 且滑环旋转速度不低于 90转 /分钟时， 每组探测器晶体之间的距离应不小于 20mm/ s。
进一步地， 每个探测器组件可包括支撑架； 与支撑架相连的高密度防辐射板； 以及设 置于所述高密度防辐射板上面对所述 X射线源一侧的多组探测器晶体。
在上述技术方案中， 行李物品 CT安检系统还包括： 用于采集来自所述多个探测组件 的信号的采集控制模块； 记录滑环旋转角度的编码系统， 以及控制 X射线源的辐射发射以 及所述信号采集操作的电气控制模块， 其中所述控制模块和所述采集模块安装在同一探测 臂架内。
在一种具体技术方案中， 所述行李物品 CT安检系统还包括： 第一和第二准直器， 所 述准直器包含有多个栅格， 用于 X射线源发出的射线束分解为多个扇形射线束。
进一步地， 所述行李物品 CT安检系统还包括： 探测器晶体安装支架， 在所述探测器晶 体安装支架上沿所述扫描通道的轴向方向上安装有多个探测器晶体， 经所述准直器分解的 多个扇形射线束与所述多个探测器晶体的接收面相对应， 保证在同一时刻沿所述扫描通道 的轴向方向上可同时获取多列被扫描物体的断层数据。
更具体地， 所述第一准直器栅格为一条与射线剂量分布相关的点状拟合曲线， 其中部 的栅格缝较窄， 边缘处的栅格缝较宽， 以调整射线束的剂量， 使到达不同探测器晶体接收 面处的强度范围基本一致。
更具体地， 第一准直器沿皮带传送的方向可包含多个栅格， 栅格的数量以及栅格之间的 距离应当与探测器的列数以及沿皮带传送方向相邻探测器接收面之间的距离保持一致。
在上述技术方案中， 所述探测器组件中的高密度防辐射板包含铅、 钨镍铁合金或钢。 在一种技术方案中， 所述第一准直器栅格设置有多条狭缝， 所述狭缝数量至少为两条。 在一种具体实施方式中，上述行李物品 CT安检系统还包括围绕所述扫描通道的滑环系 统， 其中所述 X射线源和探测臂架安装所述滑环系统上， 并围绕所述扫描通道中心旋转。
在本发明中， 在 CT扫描臂架上与探测器组件相对应的位置处安装有 X射线源和第一 准直器。 当 X射线源发射 X射线束时， 第一准直器可将进入扫描扇形区的 X射线由锥状束 流分解为一定角度覆盖范围的多列扇形束流， 每个扇形束流对应一组探测器晶体接收面。 由此， 当一次 X射线源靶点发出 X射线时， 探测器可以无遮挡地同时得到多组被扫描物体 相应断层位置处透射过来的 X射线束， 通过探测对应列探测体上的 X光信号累积， 转变为 电信号， 通过增益的调整， 转换为数字信号， 通过计算机系统的数据重建， 得到被检查物 体同一断层内在不同角度方向上的特征数据。
通过这种结构设计， 可以在同一时刻得到多个断层在不同角度方向上的断层数据。具 体到 CT安检扫描设备， 由于靶点距探测体接收面的距离远远大于各组探测器晶体之间的距 离， 因此可认为各组探测体采集的数据信息分别对应相邻断层内的数据信息， 即一次通过 可得到多组被扫描物体的断层数据， 从而提高了 CT的扫描速度。
根据本发明的另一方面， 其提供一种用于行李物品 CT安检系统的探测器装置， 其中 所述 CT安检系统的探测器装置包括扫描通道，其中行李物品通过所述扫描通道进出所述行 李物品探测器装置； 设置在扫描通道一侧的 X射线源； 以及设置在所述扫描通道相对一侧 的用于安装所述探测器装置的探测臂架， 其特征在于探测器装置包括： 多个探测器组件， 每个探测器组件上至少有一组探测器晶体的首顶点位于以扫描通道中心为圆心的一个圆弧 上， 且所述多个探测器组件依次相连排布； 以及所述多个探测器组件中的探测器晶体所有 接收面处于以靶点为圆心的放射状射线束的范围内， 并且在每个探测器组件中至少有一组 探测器晶体的接收面中点与射线源靶点的连线垂直于探测器晶体接收面。
在一种实施方式中， 所有探测器晶体接收面与辐射源的靶点之间， 安装有用于避光防 尘的轻型材料， 用于屏蔽可见光， 避免灰尘等落在探测器晶体接收面， 所述避光防尘的轻 型材料包含但不限于聚四氟乙烯、 塑料、 胶木、 铝箔。
在本发明的上述技术方案中，每个探测器组件上至少有一组探测器晶体的首顶点位于 以扫描通道的中心点为圆心的一个圆弧上， 在每个探测器组件中至少有一组探测器晶体的 接收面中点与射线源靶点连线垂直于探测器晶体的接收面， 且探测器组件是首尾依次相连 排布， 所有探测器晶体的所有接收面处于放射状射线束的范围内。
通过采用上述技术方案， 由于通道中心与 X射线源靶点之间的角度对应关系确定， 发 明人可通过计算机数据校正就能够保证到达探测器晶体接收面 P值数据的稳定性， 减少射 线强度的影响。 附图说明
下面参照附图对根据本发明实施方式的行李物品 CT安检系统进行说明， 其中： 图 1是采用根据本发明的一种具体实施方式中的 CT安检系统整机示意图。 图 2是显示 CT安检系统的主要组成部件的透视示意图。 图 3是显示垂直扫描通道的探测器组件排布示意图。 图 4是显示图 3中的探测器组件的具体结构的放大示意 图 5是俯视图显示的探测器装置结构示意图。 标号说明
1 输送带系统
2 入口扫描通道
3 滑环系统
4 X射线源支架
5 探测臂架
6出口扫描通道
7 设备支撑底板
8 CT X射线源
9 第一准直器
10 第二准直器
11 探测臂架的探测区域
12探测臂架安装板
13 滑环支撑架
14 滑环驱动电机
15 X射线源靶点
16 首端探测器晶体接收面
17 首端探测器晶体接收面中点
18 首端探测器晶体接收面的首顶点
19扫描通道有效区
20 臂架中间位置处的三个探测器组件
21 扫描通道中心
22 探测器组件分布圆
23末端的探测器晶体接收面的首顶点
24 末端探测器晶体接收面
25 末端探测器晶体接收面的中点
26靶点与探测器晶体接收面连线的最大夹角 27 探测器晶体安装支架
28 高密度防辐射板
29 相邻探测器晶体之间的距离
30 探测器晶体
31 探测器组件的内部支撑
32 探测器晶体接收面
33 探测器组件安装附件
34 数据采集 /控制模块
35 探测器安装盒
36 探测器组件剖面图
37 第二准直器栅格
38 防尘遮光板
39 第一准直器栅格
40 平行扫描通道的 X射线束
41 扫描通道与滑环连接
42 连接支架 具体实施方式 下面通过实施例， 并结合附图， 对本发明的技术方案作进一步具体的说明。 在说明书 中， 相同或相似的附图标号指示相同或相似的部件。 下述参照附图对本发明实施方式的说 明旨在对本发明的总体发明构思进行解释， 而不应当理解为对本发明的一种限制。
参见附图 1， 其显示出了根据本发明的一种具体实施方式的行李物品 CT安检系统， 其 包括： 扫描通道 2或 6 ， 其中行李物品 （未示出） 通过所述入口扫描通道 2进入所述行李 物品 CT安检系统； 设置在入口扫描通道 2和出口扫描通道 6之间的 X射线源 8 ; 设置在所 述 X射线源 8 相对一侧的探测臂架 5， 多个探测器组件 20安装在探测臂架 5上， 其特征在 于： 所述多个探测器组件中的每个探测器组件上至少有一组探测器晶体接收面的首顶点 18 或 23， 位于以扫描通道中心 21为圆心的一个分布圆 22上， 且所述多个探测器组件依次相 连排布； 以及所述多个探测器组件中的探测器晶体的接收面 16或 24 处于以射线源靶点为 圆心的放射状射线束的范围内， 并且在每个探测器组件中至少有一组探测器晶体接收面的 中点 17或 25 与射线源靶点的连线垂直于探测器晶体接收面 16或 24。 如图 1所示， 在一 种优选方式中， 还包括围绕所述扫描通道的滑环系统 3， 其中所述 X射线源 8和探测臂架 5 安装所述滑环系统 3上， 并围绕所述扫描通道的中心 21旋转。
如图 3所示，每个探测器组件上至少有一组探测器晶体接收面的首顶点 18或 23位于 以扫描通道的中心点为圆心的一个圆弧面 22上， 且探测器组件是依次相连排布， 探测器晶 体所有接收面 16或 24处于以 X射线源靶点为圆心的放射状射线束的范围内。 通过探测器 组件的优化布置， 可以在不缩小扫描通道的基础上， 降低了设备的外形宽度尺寸， 从而减 少设备的占地面积， 进一步降低 CT设备的综合成本。
如图 2和图 3所示， 本发明从 CT技术所要解决的目的扫描行李得到被扫描行李的图 像出发， 以行李通道的中心点 22来排布探测臂架 5， 将探测器组件连续排布在以扫描通道 的中心点 22为圆周中心的探测臂架 5上， 在一个实例中， 通过将滑环 3的旋转中心与探测 器组件 20的排布中心点重合， 可有效降低 CT滑环 3旋转体的旋转直径， 进而实现旋转 CT 条件下的最小设备尺寸。
同时， 为保证所有的探测器接收面 16或 24能够与 X射线源 8发射的射线束垂直， 在 安装时将每个探测器组件 20上的探测器晶体以探测器晶体接收面的首顶点 18或 23为圆心 进行一定角度的旋转，保证 X射线源 8的靶点 15与探测器组件上的至少一组探测器晶体接 收面 16或 24的中点 17或 25的连线垂直于探测器组件上对应探测器晶体接收面 16或 24， 实现探测臂架 5的一体化加工，所有的探测器晶体得到的数据和电气控制模块 34均处于一 个探测臂内， 以此来保证 X射线到达探测器晶体接收面的稳定， 提高了探测器系统采集的 灵敏度。
如图 4所示， 在上述技术方案中， 每个探测器组件 20可包含一组以上的探测器晶体 30，射线源靶点 15与探测器晶体接收面 32中点连线与所述接收面 32的最小夹角应大于或 等于 85 ° 。 优选地， 所述 X射线源 8的发射角至少大于所述 X射线源靶点 15与所述圆弧 上首尾两个探测器晶体接收面的末端处 16A、 25A的连线夹角 26。 优选地， 所述扫描通道 的有效扫描区域 19位于所述 X射线源的靶点 15与所述探测器组件分布圆上首末两个探测 器晶体接收面末端处 16A、 25A的连线的夹角范围内。
通过上述设置方式，探测臂架 5上探测器区域 11的探测器组件的排列数量能够满足覆 盖全部扫描通道有效区域 19， 从而消除了成像不全的缺陷。 参图 1和图 3， 在具体 CT扫描 过程中， 输送带系统 1的上表面必须位于扫描通道 2或 6的有效区域内， 保证输送带上的 所有物品均可以被 X射线源的射线束所覆盖。 另外， 按照此种设计， 可保证每个探测器晶 体 30的探测器晶体接收面 32到与射线的主束流方向基本保持一致， 从而增加每个探测器 晶体 30获取的有效辐射量， 减少从探测器晶体侧面的散射， 提高 CT设备的成像质量。 如图 2所示， 在上述 CT系统中， 可以将探测臂架 5安装在滑环系统 3的可旋转探测 臂架安装板 12上， 探测臂架安装板 12安装在滑环支撑架 13中， 并由滑环驱动电机 14驱 动。 同时， 将探测器组件 20、 CT X射线源 8和 CT第一准直器 9、 第二准直器 10安装在探 测臂架 5上。 在上述具体实施例中， 系统中只包含一个探测臂架 5， 探测臂架为一封闭臂 架盒， 内部安装有数据采集 /控制模块 34， 全部的 CT数据采集系统可以采用一套数据采集 模块和控制模块， 并且进一步地， 所有采集到的数据可通过一套算法来处理， 从而提高了 CT设备执行扫描操作的速度， 提高数据传输和处理的速度。
如图 4所示， 每一探测器组件 20上可排布 2组以上探测器晶体 30， 且每组探测器晶 体之间的距离 29不小于 20mm。 多组探测器晶体 30的使用， 能够在一次扫描的过程中， 得 到更多的被扫描物体的信息， 从而提高系统的最终通过率和识别精度。 进一步地， 每个探 测器组件可包括探测器晶体安装支架 27 ; 与探测器安装支架相连的高密度防辐射板 28 ; 以 及设置于所述探测器组件内部支撑 31上正对所述 X射线源 8—侧的探测器晶体 30。 如实 例中所示， 探测器组件的高密度防辐射板 22可以包含铅、 钨镍铁合金或钢等材料， 其厚度 应满足相应标准中对环境辐射泄漏指标的要求。
图 5是俯视图显示的探测器组件结构示意图。 所述行李物品 CT安检系统还包括： 第 一准直器 9， 其包含的准直器栅格 39用于对来自 X射线源 8的射线束进行分解， 并且控制 每个栅格的输出 X束流能量强度，； 以及第二准直器 10， 其上的栅格 37用于对将入射到探 测器组件上的 X射线进行屏蔽， 保证到达探测器晶体接收面的 X射线来源于探测器晶体的 接收面， 而不是探测器晶体接收面边缘的散射。 如图 5所示， 所述第一准直器栅格 39包含 至少两个隔断， 用于将 X射线源 8发出的射线束分解为两个以上的扇形射线束。进一步地， 如图 5所示， 沿所述扫描通道 2或 6的方向上，在所述探测器晶体安装支架 27上安装有多 个探测器晶体 30， 所述分解的扇形射线束与所述探测器晶体 30 的接收面一一对应， 从而 在沿所述扫描通道方向上可同时采集多列探测器的采集数据。 前述多个探测器组件可以由 多个探测器晶体 30模块组成， 其通过探测器晶体安装支架 27安装到探测器安装盒 35中， 探测器安装盒需要进行密封以减少光线、 灰尘以及环境湿度对探测器晶体性能的干扰。 探 测器安装盒 35进一步通过连接支架 42安装到 CT探测器臂架上。在保证密封、遮光的前提 下， 为减少射线主束方向上的遮挡， 探测器晶体接收面前方正对 X射线源靶点处安装有防 尘遮光板 38， 优选地，其厚度不超过 3mm， 防尘遮光板的材料为轻型材料， 包含但不限于聚 四氟乙烯、 塑料、 胶木、 铝箔。 在上述优选实施例中， 第一准直器栅格 39为一条与射线能 量分布相关的点状拟合曲线， 其中部的栅格缝较窄， 边缘处的栅格缝较宽， 以使到达不同 探测器晶体接收面处的能量强度基本一致。 在具体的实例中， 所述第一准直器栅格 39设置 有多条狭缝， 所述狭缝数量至少为两条， 例如图 5中示出的为 3条狭缝。
接下来对根据本发明的行李物品 CT安检系统的具体操作进行简要说明。行李物品（未 示出经过入口扫描通道进入 CT安检系统， 触发入口光障， 系统控制模块发出采集指令， 在滑环驱动电机 14的驱动下， CT扫描臂架 5随着滑环 3进行旋转， CT部分的 X射线源 8 发射 X射线束， 通过作为前能量校准装置的第一准直器 9， 将能量束分隔为多列的扇形 X 射线束， CT探测器组件 20开始采集 X射线数据， 经过数据处理中心对数据进行重建 3D 图像， 从而获得 CT的断层图像。
虽然本发明总体构思的一些实施例巳被显示和说明， 本领域普通技术人员将理解， 在 不违背本总体发明构思的原则和精神的情况下， 可对这些实施例做出改变， 本发明的范围 以权利要求和它们的等同物限定。

Claims

权 利 要 求
1. 一种行李物品 CT安检系统， 其包括：
扫描通道， 其中行李物品通过所述扫描通道进出所述行李物品 CT安检系统;
设置在扫描通道一侧的 X射线源；
设置在所述扫描通道相对一侧的探测臂架， 多个探测器组件安装在探测臂架上， 其特 征在于- 所述多个探测组件中的每个探测组件上至少有一组探测器晶体的首顶点位于以扫描 通道中心为圆心的一个圆弧上， 且所述多个探测组件依次相连排布； 以及
所述多个探测组件中的探测器晶体所有接收面处于以 X射线源靶点为圆心的放射状 射线束的范围内， 并且在每个探测组件中至少有一组探测器晶体的接收面中点与射线源靶 点的连线垂直于探测器晶体接收面。
2. 根据权利要求 1所述的行李物品 CT安检系统， 其特征在于：
每个探测组件可包含一组以上的探测器晶体，射线源靶点与探测器晶体接收面中点连 线与接收面的最小夹角应大于 85 ° 。
3. 根据权利要求 2所述的行李物品 CT安检系统， 其特征在于：
所述 X射线源的发射角至少大于所述 X射线源的靶点与所述圆弧上首末两个探测器晶 体的末端处的连线的夹角。
4. 根据权利要求 3所述的行李物品 CT安检系统， 其特征在于：
所述扫描通道的有效扫描区域位于所述 X射线源的靶点与所述圆弧上首末两个探测 器晶体的末端处的连线的夹角范围内。
5. 根据权利要求 4所述的行李物品 CT安检系统， 其特征在于：
每一探测组件上可排布 2 组以上探测器晶体， 且每组探测器晶体之间的距离不小于
20mm
6. 根据权利要求 5所述的行李物品 CT安检系统， 其特征在于: 每个探测组件包括支撑架； 与支撑架相连的高密度防辐射板； 以及设置于所述高密度 防辐射板上面对所述 X射线源一侧的探测器晶体。
7. 根据权利要求 6所述的行李物品 CT安检系统， 其特征在于还包括：
用于采集来自所述多个探测组件的信号的采集模块； 以及控制 X射线源的辐射发射以 及所述信号采集操作的控制模块，
其中所述控制模块和所述采集模块安装在同一探测臂架内。
8. 根据权利要求 7所述的行李物品 CT安检系统， 其特征在于还包括：
包含第一和第二准直器， 所述准直器包含有多个栅格， 用于将 X射线源发出的射线束 分解为多个扇形射线束。
9. 根据权利要求 8所述的行李物品 CT安检系统， 其特征在于还包括：
探测器安装板，在所述探测器安装板上沿所述扫描通道的轴向方向上安装有多组探测 器晶体，
所述分解的多个扇形射线束与所述多个探测器晶体的接收面相对应，从而在沿所述扫 描通道的轴向方向可同时获取多组探测数据。
10. 根据权利要求 8所述的行李物品 CT安检系统， 其特征在于：
准直器栅格为一条或几条与射线剂量分布相关的点状拟合曲线， 其中部的栅格缝较 窄， 边缘处的栅格缝较宽， 以使到达不同探测器晶体接收面处的能量范围基本一致。
11. 根据权利要求 10所述的行李物品 CT安检系统， 其特征在于- 准直器栅格设置有多条狭缝， 所述狭缝数量至少为两条。
12. 根据权利要求 6所述的行李物品 CT安检系统， 其特征在于：
所述高密度防辐射板包含铅、 钨镍铁合金或钢。
13. 根据权利要求 1-12中任何一项所述的行李物品 CT安检系统， 其特征在于还可包 括围绕所述扫描通道的滑环系统， 其中所述 X射线源和探测臂架安装所述滑环系统上， 并 围绕所述扫描通道中心旋转。
14. 一种用于行李物品 CT安检系统的探测器装置， 其中所述 CT安检系统包括扫描通 道， 其中行李物品通过所述扫描通道进出所述行李物品 CT安检系统； 设置在扫描通道一侧 的 X射线源； 以及设置在所述扫描通道相对一侧的用于安装所述探测器装置的探测臂架， 其特征在于探测器装置包括：
多个探测器组件，每个探测组件上至少有一组探测器晶体的首顶点位于以扫描通道中 心为圆心的一个圆弧上， 且所述多个探测组件依次相连排布； 以及
所述多个探测组件中的探测器晶体所有接收面处于以靶点为圆心的放射状射线束的 范围内， 并且在每个探测组件中至少有一组探测器晶体的接收面中点与射线源靶点的连线 垂直于探测器晶体接收面。
15. 根据权利要求 14所述的用于行李物品 CT安检系统的探测器装置， 其特征在于： 每个探测组件包含一组以上的探测器晶体，射线源靶点与探测器晶体接收面中点连线 与所述接收面的最小夹角应大于或等于 85°
16. 根据权利要求 14或 15所述的行李物品 CT安检系统的探测器装置，其特征在于： 所述 X射线源的发射角至少大于所述 X射线源的靶点与所述圆弧上首末两个探测器晶 体的末端处的连线的夹角。
17. 根据权利要求 16所述的用于行李物品 CT安检系统的探测器装置， 其特征在于： 所述扫描通道的有效扫描区域位于所述 X射线源的靶点与所述圆弧上首末两个探测 器晶体的末端处的连线的夹角范围内。
18. 根据权利要求 14所述的用于行李物品 CT安检系统的探测器装置，其特征在于还 包括- 第一和第二准直器， 所述准直器包含有多个栅格， 用于将 X射线源发出的射线束分解 为多个扇形射线束。
19. 根据权利要求 14所述的用于行李物品 CT安检系统的探测器装置， 其特征在于： 第一准直器和第二准直器之间安装有避光防尘材料，用于屏蔽探测器接收面上的可见 光， 避免灰尘等异物落在探测器晶体接收面上， 所述避光防尘材料为轻型材料， 包含但不 限于聚四氟乙烯、 塑料、 胶木、 铝箔。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016029367A (ja) * 2014-06-25 2016-03-03 チンホワ ユニバーシティ 検知器装置、二重エネルギーｃｔシステム及び当該システムを用いた検出方法
CN106034219A (zh) * 2015-03-15 2016-10-19 中云智慧（北京）科技有限公司 物品检测系统及检测方法
CN115097536A (zh) * 2021-07-07 2022-09-23 同方威视技术股份有限公司 检查系统和方法

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4324479A3 (en) 2012-08-21 2024-04-24 Sanofi Biotechnology Methods for treating or preventing asthma by administering an il-4r antagonist
CN104316547B (zh) * 2014-11-05 2017-04-19 同方威视技术股份有限公司 一种用于x射线检查设备的旋转弧形探测器盒
CN104330833B (zh) * 2014-11-05 2017-05-24 同方威视技术股份有限公司 一种基于旋转弧形探测器的双通道安检机
CN106526647B (zh) 2015-09-09 2019-12-03 同方威视技术股份有限公司 放射源检测方法和系统
CN105204080B (zh) * 2015-10-21 2018-07-06 公安部第一研究所 一种用于ct检测设备的探测装置的设计方法
CN107280700B (zh) * 2016-03-31 2023-06-20 通用电气公司 Ct成像设备及方法、用于ct成像设备的x射线收发组件
CN106405667B (zh) * 2016-10-20 2020-04-14 中控智慧科技股份有限公司 X射线安检机
CN106373629B (zh) * 2016-11-16 2018-06-19 同方威视技术股份有限公司 准直器及其安装结构和安装方法、安检机
US10444400B2 (en) * 2017-02-20 2019-10-15 Morpho Detection, Llc Tray conveyor baggage handling and imaging system
CN109106391A (zh) * 2018-09-18 2019-01-01 上海联影医疗科技有限公司 一种x射线探测器和医学成像设备
CN109738465A (zh) * 2019-03-07 2019-05-10 北京航星机器制造有限公司 一种ct探测装置及系统
CN112113986A (zh) * 2019-06-21 2020-12-22 同方威视技术股份有限公司 后准直器、探测器装置及扫描设备
CN110384514A (zh) * 2019-08-13 2019-10-29 明峰医疗系统股份有限公司 一种大覆盖范围高速螺旋扫描ct机
CN113740361B (zh) * 2020-05-29 2023-05-23 清华大学 检测通道、通道组件和ct检测装置
CN115113289B (zh) * 2021-07-07 2024-04-26 同方威视技术股份有限公司 检查系统和方法
WO2023003924A1 (en) * 2021-07-22 2023-01-26 Leo Cancer Care, Inc. Scanner and method of image reconstruction
CN113884513B (zh) * 2021-08-19 2024-01-30 浙江华视智检科技有限公司 安检机及货物检测方法
CN115541630A (zh) * 2022-11-30 2022-12-30 北京霍里思特科技有限公司 一种射线接收装置
CN117518282B (zh) * 2023-11-09 2024-06-07 上海物影科技有限公司 一种小型化安检ct系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6687326B1 (en) * 2001-04-11 2004-02-03 Analogic Corporation Method of and system for correcting scatter in a computed tomography scanner
CN1708686A (zh) * 2002-10-02 2005-12-14 显示成像技术有限公司 交叠排列的ct行李扫描仪
CN101900695A (zh) * 2009-05-27 2010-12-01 清华大学 伪双能欠采样物质识别系统和方法
CN202794067U (zh) * 2012-09-19 2013-03-13 同方威视技术股份有限公司 一种行李物品ct安检系统及其探测器装置

Family Cites Families (98)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1572600A (en) * 1976-03-04 1980-07-30 Emi Ltd Radiology
US4115696A (en) * 1977-04-18 1978-09-19 General Electric Company Computed tomography scanner
US4315157A (en) * 1980-05-01 1982-02-09 The University Of Alabama In Birmingham Multiple beam computed tomography (CT) scanner
JPS60137350A (ja) * 1983-12-27 1985-07-20 株式会社東芝 放射線検出装置
US4751644A (en) * 1985-10-28 1988-06-14 Picker International, Inc. Interleaved source fan reconstruction technique
WO1988002239A1 (en) * 1986-09-30 1988-04-07 Yokogawa Medical Systems, Ltd. Radiation ct
US5544212A (en) * 1988-10-20 1996-08-06 Picker International, Inc. Spiral CT using an integrating interpolator
US5166961A (en) * 1988-10-20 1992-11-24 Picker International, Inc. CT scanner having multiple detector widths
US5262946A (en) * 1988-10-20 1993-11-16 Picker International, Inc. Dynamic volume scanning for CT scanners
US5396418A (en) * 1988-10-20 1995-03-07 Picker International, Inc. Four dimensional spiral volume imaging using fast retrace
DE3878247D1 (en) * 1988-11-09 1993-03-18 Siemens Ag Computer-tomograph.
US5008907A (en) * 1989-05-31 1991-04-16 The Regents Of The University Of California Therapy x-ray scanner
JPH0323847A (ja) * 1989-06-21 1991-01-31 Toshiba Corp Ｘ線ｃｔスキャナ装置
US5031198A (en) * 1989-11-17 1991-07-09 Picker International, Inc. Composite detector mounting ring for CT scanners
US5208746A (en) * 1989-11-22 1993-05-04 General Electric Company Method for helical scanning with a stationary detector using rebinning and splicing to create detector vertex projection sets
JPH06137350A (ja) * 1992-10-30 1994-05-17 Aisin Chem Co Ltd シュークラッチライニングの製造方法
US5481583A (en) * 1994-08-24 1996-01-02 Picker International, Inc. Higher order preinterpolator for backprojection
US5712889A (en) * 1994-08-24 1998-01-27 Lanzara; Giovanni Scanned volume CT scanner
US5757951A (en) * 1994-12-20 1998-05-26 Picker International, Inc. Correction of off-focal radiation
US5668851A (en) * 1996-06-21 1997-09-16 Analogic Corporation X-ray Tomography system with stabilized detector response
DE69716169T2 (de) * 1996-06-27 2003-06-12 Analogic Corp Vorrichtung zum Erfassen für axiale Transversal- und Quadratur-Tomographie
US5781606A (en) * 1996-07-25 1998-07-14 Analogic Corporation X-ray tomography system with substantially continuous radiation detection zone
US5757878A (en) * 1996-08-16 1998-05-26 Analogic Corporation Detector arrangement for x-ray tomography system
US5912938A (en) * 1996-10-07 1999-06-15 Analogic Corporation Tomography system having detectors optimized for parallel beam image reconstruction
US6163617A (en) * 1997-11-26 2000-12-19 Picker International, Inc. Backprojection with a multi-color rendering engine
US6078639A (en) * 1997-11-26 2000-06-20 Picker International, Inc. Real time continuous CT imaging
US5982845A (en) * 1998-04-07 1999-11-09 Picker International, Inc. Forward projection and backprojection processor
US6181766B1 (en) * 1998-08-25 2001-01-30 General Electric Company Digital encoding of RF computerized tomography data
US6154516A (en) * 1998-09-04 2000-11-28 Picker International, Inc. Cardiac CT system
US6097784A (en) * 1998-09-30 2000-08-01 Picker International, Inc. 3D image reconstruction for helical partial cone beam data
JP2002528728A (ja) * 1998-10-28 2002-09-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ コンピュータトモグラフ検出器
US6104775A (en) * 1998-10-29 2000-08-15 Picker International, Inc. 3D image reconstruction for helical partial cone beam scanners using wedge beam transform
US6229870B1 (en) * 1998-11-25 2001-05-08 Picker International, Inc. Multiple fan beam computed tomography system
US6215852B1 (en) * 1998-12-10 2001-04-10 General Electric Company Thermal energy storage and transfer assembly
US6185271B1 (en) * 1999-02-16 2001-02-06 Richard Estyn Kinsinger Helical computed tomography with feedback scan control
US6264365B1 (en) * 1999-10-25 2001-07-24 General Electric Company Background monitoring of CT data for existence and location of a bad detector
US6276145B1 (en) * 1999-10-27 2001-08-21 Picker International, Inc. Aerostatic CT suspension
JP3964615B2 (ja) * 2000-11-09 2007-08-22 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー コリメータ制御方法および装置並びにｘ線ｃｔ装置
JPWO2002065917A1 (ja) * 2001-02-23 2004-06-17 三菱重工業株式会社 Ｘ線ｃｔ装置
EP1485697A2 (en) * 2002-03-19 2004-12-15 Breakaway Imaging, Llc Computer tomograph with a detector following the movement of a pivotable x-ray source
US7103137B2 (en) 2002-07-24 2006-09-05 Varian Medical Systems Technology, Inc. Radiation scanning of objects for contraband
WO2004019279A2 (en) * 2002-08-21 2004-03-04 Breakaway Imaging, Llc Apparatus and method for reconstruction of volumetric images in a divergent scanning computed tomography system
CN1672039A (zh) * 2002-09-04 2005-09-21 皇家飞利浦电子股份有限公司 用于ct扫描机的抗散射x射线屏蔽
US7224765B2 (en) * 2002-10-02 2007-05-29 Reveal Imaging Technologies, Inc. Computed tomography system
WO2004061478A1 (en) * 2003-01-06 2004-07-22 Koninklijke Philips Electronics N.V. Radiation detector with shielded electronics for computed tomography
US6975699B2 (en) * 2003-02-19 2005-12-13 Invision Technologies, Inc. Non-intrusive x-ray inspection apparatus with stair-step configuration of x-ray detector modules
GB0525593D0 (en) * 2005-12-16 2006-01-25 Cxr Ltd X-ray tomography inspection systems
US7039154B1 (en) 2003-10-02 2006-05-02 Reveal Imaging Technologies, Inc. Folded array CT baggage scanner
US7352841B2 (en) 2003-10-02 2008-04-01 Reveal Imaging Technologies, Inc. Folded array CT baggage scanner
EP1719000A2 (en) * 2004-02-11 2006-11-08 Reveal Imaging Technologies, Inc. Contraband detection systems and methods
US7027554B2 (en) * 2004-03-01 2006-04-11 Invision Technologies, Inc. Reduced-size apparatus for non-intrusively inspecting an object
US7502437B2 (en) 2004-03-10 2009-03-10 Koninklijke Philips Electronics N.V. Focused coherent-scatter computer tomography
WO2005092195A1 (ja) * 2004-03-29 2005-10-06 National Institute Of Radiological Sciences ヒール効果補正フィルタ、ｘ線照射装置、ｘ線ｃｔ装置及びｘ線ｃｔ撮像方法
DE102004028124B4 (de) * 2004-06-09 2008-08-07 Siemens Ag Bildgebendes Tomografiegerät mit mehrfachen Betriebsarten sowie ein Verfahren zum Wechsel der Betriebsart des Tomografiegeräts
DE102004055752B4 (de) * 2004-11-18 2007-12-13 Siemens Ag Computertomograph
EP1887937B1 (en) * 2005-05-31 2016-10-05 Arineta Ltd. Graded resolution field of view ct scanner
DE102005036527B4 (de) * 2005-08-03 2008-05-21 Yxlon International X-Ray Gmbh Röntgen-CT-Prüfanlage sowie CT-Verfahren zur Prüfung von Objekten
JP2009519471A (ja) * 2005-12-12 2009-05-14 リビール イメージング テクノロジーズ ずれた放射線によるｃｔ検査
WO2007106674A2 (en) * 2006-03-14 2007-09-20 Philips Intellectual Property And Standards Gmbh Nuclear medicine imaging system with high efficiency transmission measurement
CN101410727A (zh) * 2006-03-29 2009-04-15 皇家飞利浦电子股份有限公司 高效的双能x射线衰减测量
US7526064B2 (en) * 2006-05-05 2009-04-28 Rapiscan Security Products, Inc. Multiple pass cargo inspection system
US7551714B2 (en) * 2006-05-05 2009-06-23 American Science And Engineering, Inc. Combined X-ray CT/neutron material identification system
JP4881071B2 (ja) * 2006-05-30 2012-02-22 株式会社日立製作所 放射線検出器、及びこれを搭載した放射線撮像装置
JP5091505B2 (ja) * 2007-02-28 2012-12-05 株式会社東芝 放射線検出器及びｘ線ｃｔ装置
WO2009081327A2 (en) * 2007-12-19 2009-07-02 Koninklijke Philips Electronics N.V. A rotor and x-ray ct scanners
CN101470086B (zh) * 2007-12-29 2012-11-28 清华大学 探测器装置及具有该探测器装置的ct检查系统
US8077826B2 (en) * 2008-06-09 2011-12-13 Arineta Ltd. CT scanner with scatter radiation correction and method of using same
CN102216806B (zh) * 2008-11-18 2015-08-19 皇家飞利浦电子股份有限公司 光谱成像检测器
CN101762613B (zh) * 2008-12-24 2012-12-26 同方威视技术股份有限公司 用于x射线检查的探测器和准直器的组合装置及方法
CN101788505B (zh) * 2009-01-22 2011-12-14 同方威视技术股份有限公司 用于x射线行李包检查设备的辐射成像结构
US8340245B2 (en) * 2009-06-05 2012-12-25 Sentinel Scanning Corporation Transportation container inspection system and method
JP5581321B2 (ja) * 2009-06-23 2014-08-27 株式会社日立メディコ Ｘ線ｃｔ装置
US8509380B2 (en) * 2010-03-19 2013-08-13 The Board Of Trustees Of The Leland Stanford Junior University Inverse geometry volume computed tomography systems
US9247914B2 (en) * 2010-09-29 2016-02-02 Hitachi Medical Corporation X-ray imaging apparatus and X-ray focus position control method of X-ray imaging apparatus
PL2628030T3 (pl) * 2010-10-15 2020-05-18 American Science & Engineering, Inc. Zdalnie wyrównywana łukowata matryca detektorowa do wysokoenergetycznego obrazowania rentgenowskiego
CN202041481U (zh) * 2011-04-02 2011-11-16 丁厚本 一种x射线ct通道式安检机
US8774351B2 (en) * 2011-04-05 2014-07-08 Triple Ring Technologies, Inc. Method and apparatus for advanced X-ray imaging systems
WO2013016032A2 (en) * 2011-07-26 2013-01-31 American Science And Engineering, Inc. Stowable arcuate detector array
US8744211B2 (en) * 2011-08-31 2014-06-03 Analogic Corporation Multi-modality image acquisition
CN104094138A (zh) * 2011-11-22 2014-10-08 欣雷系统公司 高速、覆盖区小的x射线断层摄影检查系统、设备和方法
WO2013080565A1 (ja) * 2011-12-01 2013-06-06 株式会社 東芝 シンチレータアレイとそれを用いたｘ線検出器およびｘ線検査装置
JP5815048B2 (ja) * 2011-12-12 2015-11-17 株式会社日立メディコ Ｘ線ｃｔ装置
CN103308535B (zh) * 2012-03-09 2016-04-13 同方威视技术股份有限公司 用于射线扫描成像的设备和方法
US9119589B2 (en) * 2012-03-22 2015-09-01 Kabushiki Kaisha Toshiba Method and system for spectral computed tomography (CT) with sparse photon counting detectors
US9044152B2 (en) * 2012-04-05 2015-06-02 Analogic Corporation Rotatable drum assembly for radiology imaging modalities
US9125613B2 (en) * 2012-06-12 2015-09-08 Mobius Imaging, Llc Detector system for imaging device
EP2866666B1 (en) * 2012-06-28 2019-08-07 Mobius Imaging, LLC Method and system for x-ray ct imaging
US9417340B2 (en) * 2012-07-06 2016-08-16 Morpho Detection, Llc Compact geometry CT system
US8768032B2 (en) * 2012-07-06 2014-07-01 Morpho Detection, Llc Method for correction of artifacts from edge detectors in compact geometry CT
US9078569B2 (en) * 2012-08-20 2015-07-14 Zhengrong Ying Configurable data measurement and acquisition systems for multi-slice X-ray computed tomography systems
CN103901493B (zh) * 2012-12-27 2016-12-28 同方威视技术股份有限公司 一种无机架ct装置
CN103901488A (zh) * 2012-12-27 2014-07-02 同方威视技术股份有限公司 固定式ct装置
CN103961119A (zh) * 2013-01-31 2014-08-06 Ge医疗系统环球技术有限公司 Ct成像系统和确定ct准直仪缝隙轮廓的方法
US9285327B2 (en) * 2013-02-06 2016-03-15 Zhengrong Ying Adjustable photon detection systems for multi-slice X-ray computed tomography systems
US9076563B2 (en) * 2013-06-03 2015-07-07 Zhengrong Ying Anti-scatter collimators for detector systems of multi-slice X-ray computed tomography systems
US9188696B2 (en) * 2013-06-25 2015-11-17 Analogic Corporation Mitigation of radiation leakage via entry port and/or exit port of radiation system
CN105242322A (zh) * 2014-06-25 2016-01-13 清华大学 探测器装置、双能ct系统和使用该系统的检测方法
CN105116462A (zh) * 2015-09-08 2015-12-02 同方威视技术股份有限公司 安全检查设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6687326B1 (en) * 2001-04-11 2004-02-03 Analogic Corporation Method of and system for correcting scatter in a computed tomography scanner
CN1708686A (zh) * 2002-10-02 2005-12-14 显示成像技术有限公司 交叠排列的ct行李扫描仪
CN101900695A (zh) * 2009-05-27 2010-12-01 清华大学 伪双能欠采样物质识别系统和方法
CN202794067U (zh) * 2012-09-19 2013-03-13 同方威视技术股份有限公司 一种行李物品ct安检系统及其探测器装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016029367A (ja) * 2014-06-25 2016-03-03 チンホワ ユニバーシティ 検知器装置、二重エネルギーｃｔシステム及び当該システムを用いた検出方法
KR20170072170A (ko) * 2014-06-25 2017-06-26 칭화대학교 탐측기 장치, 듀얼 에너지 ct 시스템 및 그 시스템을 이용하는 검출 방법
US9885801B2 (en) 2014-06-25 2018-02-06 Tsinghua University Detector device, dual energy CT system and detection method using the system
KR102238156B1 (ko) * 2014-06-25 2021-04-12 칭화대학교 탐측기 장치, 듀얼 에너지 ct 시스템 및 그 시스템을 이용하는 검출 방법
CN106034219A (zh) * 2015-03-15 2016-10-19 中云智慧（北京）科技有限公司 物品检测系统及检测方法
CN115097536A (zh) * 2021-07-07 2022-09-23 同方威视技术股份有限公司 检查系统和方法
CN115097536B (zh) * 2021-07-07 2024-05-14 同方威视技术股份有限公司 检查系统和方法

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