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    • 51. 发明专利
    • Grid for radiography, manufacturing method thereof, and radiation imaging system
    • 放射线图,其制造方法和放射成像系统
    • JP2012143536A
    • 2012-08-02
    • JP2011191911
    • 2011-09-02
    • Fujifilm Corp富士フイルム株式会社
    • KANEKO YASUHISA
    • A61B6/06A61B6/00
    • G01N23/04A61B6/4258A61B6/4291A61B6/484G01N2223/1016G01N2223/313Y10T29/49734
    • PROBLEM TO BE SOLVED: To efficiently repair a defect of the grid.SOLUTION: In a second grid 14, X-ray absorbing portions 14a and X-ray transparent portions 14b extending in a y direction are alternately arranged in an x direction. After the manufacture of the second grid 14, a defective portion is detected in the second grid 14. A rectangular area to be cut out is set along the x and y directions so as to enclose this defective portion. By cutting out the area to be cut out, a cutout 30 is formed. A micro grid 31, which is smaller than the cutout 30, is prepared to be contact with for positioning the cutout such that the micro grid 31 is in contact with two adjoining sides of the cutout 30. A gap 52 generated between an outline of the cutout 30 and the micro grid 31 is filled with Sn-Pb as an X-ray absorbing material.
    • 要解决的问题:有效地修复电网的缺陷。 解决方案:在第二格栅14中,在x方向上交替排列沿y方向延伸的X射线吸收部14a和X射线透明部14b。 在第二格栅14的制造之后,在第二格栅14中检测到缺陷部分。沿x和y方向设置要切出的矩形区域,以便包围该缺陷部分。 通过切出待切割的区域,形成切口30。 准备小于切口30的微型格栅31接触以定位切口,使得微格栅31与切口30的两个相邻的侧面接触。 切口30和微格栅31填充有Sn-Pb作为X射线吸收材料。 版权所有(C)2012,JPO&INPIT
    • 56. 发明申请
    • AUTOMOBILE SCANNING SYSTEM
    • 汽车扫描系统
    • WO2010114518A1
    • 2010-10-07
    • PCT/US2009/038903
    • 2009-03-31
    • SPECTRUM SAN DIEGO, INC.SMITH, Steven, W.
    • SMITH, Steven, W.
    • G01N23/04G01T1/16
    • G01N23/04G01N2223/313G01N2223/423G01V5/0041G01V5/0066
    • A dual-energy x-ray imaging system searches a moving automobile for concealed objects. Dual energy operation is achieved by operating an x-ray source at a constant potential of 100KV to 150KV, and alternately switching between two beam filters. The first filter is an atomic element having a high k-edge energy, such as platinum, gold, mercury, thallium, lead, bismuth, and thorium, thereby providing a low-energy spectrum. The second filter provides a high-energy spectrum through beam hardening. The low and high energy beams passing through the automobile are received by an x-ray detector. These detected signals are processed by a digital computer to create a steel suppressed image through logarithmic subtraction. The intensity of the x-ray beam is adjusted as the reciprocal of the measured automobile speed, thereby achieving a consistent radiation level regardless of the automobile motion. Accordingly, this invention provides images of organic objects concealed within moving automobiles without the detritus effects of overlying steel and automobile movement.
    • 双能X射线成像系统搜索移动的汽车隐藏物体。 通过在100KV至150KV的恒定电位下操作x射线源,并且交替地在两个光束滤波器之间切换来实现双能量操作。 第一滤光器是具有高k边能量的原子元素,例如铂,金,汞,铊,铅,铋和钍,从而提供低能谱。 第二个滤光片通过光束硬化提供高能谱。 穿过汽车的低能量和高能束被x射线探测器接收。 这些检测信号由数字计算机处理以通过对数减法产生钢抑制图像。 X射线束的强度被调整为所测量的汽车速度的倒数,从而实现与汽车运动无关的一致的辐射水平。 因此,本发明提供了隐藏在移动汽车内的有机物体的图像,而没有上覆钢和汽车运动的碎屑效应。