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    • 8. 发明授权
    • Method and system for binocular steroscopic scanning radiographic imaging
    • 双目立体扫描放射成像的方法和系统
    • US07545906B2
    • 2009-06-09
    • US11955863
    • 2007-12-13
    • Yali XieQitian MiaoYuanjing LiHua PengXueguang CaoHongsheng WenYaohong LiuQuanwei SongJianping GuJin LinHongbo YangPingan Luo
    • Yali XieQitian MiaoYuanjing LiHua PengXueguang CaoHongsheng WenYaohong LiuQuanwei SongJianping GuJin LinHongbo YangPingan Luo
    • G01N23/00
    • G01V5/0058A61B6/022G01N23/04G06T7/593G06T2207/10116G06T2207/30112
    • In a binocular steroscopic scanning radiographic imaging method, X-rays emitted by the same radiation source are used. The X-rays pass through a double-slit collimator to form two X-ray beam sectors, which are symmetric or asymmetric and have an angle between them. The X-ray beam sectors, after penetrating through an object under detection, are received by the left and right detector array, respectively, then converted into electric signals to be inputted to the respective image acquisition systems, and received by a computer processing system for image processing and displaying. A system corresponding to the method comprises a radiation source, a beam controller, two mutually connected arms of detector arrays, image acquisition systems connected respectively to each of the detector arrays and a computer processing system. The present invention can display the transmission images detected by each of the detector arrays as well as tomograms with different depth reconstructed from the transmission images according to the principle of parallax. The present invention is convenient, fast in detection and realizes with low cost the recognition of objects of different depths.
    • 在双目立体扫描放射线照相成像方法中,使用由相同的辐射源发射的X射线。 X射线穿过双缝准直器以形成两个X射线束扇区,它们是对称的或非对称的,并在它们之间具有一个角度。 X射线束扇区在穿透被检测物体之后,分别被左右检测器阵列接收,然后被转换成电信号以输入到各个图像采集系统,并被计算机处理系统接收 图像处理和显示。 对应于该方法的系统包括辐射源,光束控制器,检测器阵列的两个相互连接的臂,分别连接到每个检测器阵列的图像采集系统和计算机处理系统。 根据视差的原理,本发明可以显示由每个检测器阵列检测的透射图像以及从透射图像重建的不同深度的断层图像。 本发明方便,检测快,实现了低成本识别不同深度的物体。
    • 10. 发明授权
    • Method and equipment for discriminating materials by employing fast neutron and continuous spectral x-ray
    • 通过采用快中子和连续光谱X射线识别材料的方法和设备
    • US07399976B2
    • 2008-07-15
    • US11353472
    • 2006-02-14
    • Kejun KangHaifeng HuYali XieQitian MiaoYigang YangYuanjing LiZhiqiang ChenXuewu Wang
    • Kejun KangHaifeng HuYali XieQitian MiaoYigang YangYuanjing LiZhiqiang ChenXuewu Wang
    • G01N23/02
    • G01N23/04G01T3/00G01V5/0033
    • Disclosed is a method of discriminating materials by employing fast neutron and continuous spectral X-ray and an equipment for the same. The method comprising the steps of: (a) transmitting a fast neutron beam produced by a fast neutron source and a continuous spectral X-ray beam produced by a continuous spectral X-ray source through inspected objects; (b) directly measuring the intensity of the transmitted X-rays and the intensity of the transmitted neutrons by a X-ray detector array and a neutron detector array respectively; and (c) identifying the materials of the inspected object by Z-dependency curves formed by the attenuation differences between the neutron beam and X-ray beam transmitted through different materials of the inspected object. This direct measurement of transmitted dual-ray technique has much more efficient than secondary radiations measurement such as neutron activation analysis, has much more material discrimination sensitivity than dual-energy x-ray technique. The respective measurements of neutrons and x-rays make the usages of high detect efficiency neutron detectors and x-ray detectors possible. The using continuous spectral x-ray produced by Linac adds more advantages such as: high penetration ability, high spatial resolution, and high image quality over monoenergetic dual-ray technique.
    • 本发明公开了一种采用快中子和连续光谱X射线鉴别材料的方法及其设备。 该方法包括以下步骤:(a)通过检测对象发射由快中子源产生的快中子束和由连续光谱X射线源产生的连续光谱X射线束; (b)分别通过X射线检测器阵列和中子检测器阵列直接测量透射的X射线的强度和发射的中子的强度; 和(c)通过由穿过检测对象的不同材料的中子束和X射线束之间的衰减差形成的Z依赖曲线识别被检物体的材料。 传输双光线技术的这种直接测量比二次辐射测量(例如中子活化分析)更有效,比双能X射线技术具有更多的材料辨别灵敏度。 中子和x射线的相应测量使得高检测效率的中子探测器和x射线探测器成为可能。 Linac生产的使用连续光谱X射线增加了更多的优点,如:单能量双光线技术,高穿透能力,高空间分辨率和高图像质量。