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    • 1. 发明申请
    • GOS CERAMIC SCINTILLATING FIBER OPTICS X-RAY IMAGING PLATE FOR USE IN MEDICAL DF AND RF IMAGING AND IN CT
    • GOS陶瓷扫描光纤光学X射线成像板用于医疗DF和RF成像和CT
    • WO2006046163A1
    • 2006-05-04
    • PCT/IB2005/053359
    • 2005-10-12
    • KONINKLIJKE PHILIPS ELECTRONICS, N.V.LEVENE, SimhaMATTSON, Rodney, A.ALTMAN, Ami
    • LEVENE, SimhaMATTSON, Rodney, A.ALTMAN, Ami
    • G01T1/24G01N23/02G01N23/04G01T1/20G01T1/22G01T1/00
    • G01T1/201G01T1/2985
    • A radiation detector (24) for an imaging system includes a two-dimensional array (50) of nondeliquescent ceramic scintillating fibers or sheets (52). The scintillating fibers (52) are manufactured from a GOS ceramic material. Each scintillating fiber (52) has a width (d2) between 0.1 mm and I mm, a length (h2) between 0.1 mm and 2mm and a height (h8) between 1mm and 2mm. Such scintillating fiber (52) has a height (h8) to cross-sectional dimension (d2, h2) ratio of approximately 10 to 1. The scintillating fibers (52) are held together by layers (86, 96) of a low index coating material. A two-dimensional array (32) of photodiodes (34) is positioned adjacent and in optical communication with the scintillating fibers (52) to convert the visible light into electrical signals. A grid (28) is disposed by the scintillating array (50). The grid (28) has the apertures (30) which correspond to a cross-section of the photodiodes (34) and determine a spatial resolution of the imaging system.
    • 一种用于成像系统的辐射检测器(24)包括非柔性陶瓷闪烁纤维或片(52)的二维阵列(50)。 闪烁纤维(52)由GOS陶瓷材料制成。 每个闪烁光纤(52)具有0.1mm至1mm之间的宽度(d2),0.1mm至2mm之间的长度(h2)和1mm至2mm之间的高度(h8)。 这种闪烁纤维(52)具有大约10比1的高度(h8)至横截面尺寸(d2,h2)比。闪烁纤维(52)通过低折射率涂层(86,96)保持在一起 材料。 光二极管(34)的二维阵列(32)被定位成与闪烁光纤(52)相邻并与之相通,以将可见光转换为电信号。 格栅(28)由闪烁阵列(50)设置。 栅格(28)具有对应于光电二极管(34)的横截面的孔(30)并且确定成像系统的空间分辨率。
    • 5. 发明申请
    • DOUBLE DECKER DETECTOR FOR SPECTRAL CT
    • 用于光谱CT的双层探测器
    • WO2006114716A2
    • 2006-11-02
    • PCT/IB2006/051091
    • 2006-04-10
    • KONINKLIJKE PHILIPS ELECTRONICS, N.V.U.S. PHILIPS CORPORATIONALTMAN, AmiSHAPIRO, OlgaLEVENE, SimhaWAINER, Naor
    • ALTMAN, AmiSHAPIRO, OlgaLEVENE, SimhaWAINER, Naor
    • A61B6/03
    • G01T1/2018A61B6/032A61B6/4241A61B6/4291A61B6/482G01T1/202
    • A radiation detector (24) includes a two-dimensional array of upper scintillators (30τ) which is disposed facing an x-ray source (14) to convert lower energy radiation into visible light and transmit higher energy radiation. A two-dimensional array of lower scintillators (30B) is disposed adjacent the upper scintillators (30τ) distally from the x-ray source (14) to convert the transmitted higher energy radiation into visible light. Respective active areas (94, 96) of each upper and lower photodetector arrays (38τ, 38B) are optically coupled to the respective upper and lower scintillators (30τ, 30B) at an inner side (60) of the scintillators (30τ, 30B) which inner side (60) is generally perpendicular to an axial direction (Z). Interference filters (110, 112) may be deposited on the active areas (94, 96) of the associated upper and lower photodetectors (38τ, 38B) to restrict radiation wavelengths received by the upper and lower photodetectors (38τ, 38B) to wavelengths emitted by the respective upper and lower scintillators (30τ, 30B). The upper scintillators (30τ) may include at least one of ZnSe(Te) and YAG(Ce).
    • 放射线检测器(24)包括面向x射线源(14)设置的上部闪烁体(30t)的二维阵列,以将较低能量的辐射转换成可见光并传输更高的能量辐射。 将下部闪烁体(30B)的二维阵列设置成与X射线源(14)远离的上部闪烁体(30t)相邻,以将透射的较高能量辐射转换成可见光。 每个上和下光电检测器阵列(38t,38B)的相关活性区域(94,96)在闪烁体(30t,30B)的内侧(60)处光学耦合到相应的上和下闪烁体(30t,30B) 该内侧(60)大致垂直于轴向(Z)。 可以将干涉滤光器(110,112)沉积在相关联的上和下光电检测器(38t,38B)的有源区(94,96)上,以将由上和下光电检测器(38t,38B)接收的辐射波长限制为发射的波长 通过相应的上和下闪烁体(30t,30B)。 上部闪烁体(30t)可以包括ZnSe(Te)和YAG(Ce)中的至少一种。
    • 6. 发明申请
    • SHAPED ANODE X-RAY TUBE
    • 形状阳极X射线管
    • WO2005010916A2
    • 2005-02-03
    • PCT/IB2004/002424
    • 2004-07-16
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.U.S. PHILIPS CORPORATIONLEVENE, SimhaMALAMUD, GabrielALTMAN, Ami
    • LEVENE, SimhaMALAMUD, GabrielALTMAN, Ami
    • H01J35/00
    • H01J35/02H01J35/06H01J35/10H01J35/14H01J2235/086
    • An x-ray tube (16) suitable for use in a computed tomography (CT) scanner (10) includes an envelope (42) which defines an evacuated chamber. An anode (40) and a cathode assembly (70) are disposed within the chamber. The anode defines a target area (56) which is struck by electrons (52) emitted by a filament (54) of the cathode assembly and emits x-rays (46). The target area lies partially on a first annular portion (80) which is disposed at first angle (a) relative to a plane perpendicular to an axis of rotation (R) of the anode, and partially on a second portion (82,120) which is radially spaced from the first portion and disposed at a second angle (ß), relative to the plane. The second angle is greater than the first angle. The portions of different slope allow the x-ray tube to take advantage of a shallow angle, while minimizing the heel effect.
    • 适用于计算机断层摄影(CT)扫描仪(10)的X射线管(16)包括限定抽真空室的外壳(42)。 阳极(40)和阴极组件(70)设置在室内。 阳极限定由阴极组件的灯丝(54)发射的电子(52)撞击并发射x射线(46)的目标区域(56)。 目标区域部分地位于第一环形部分(80)上,第一环形部分(80)相对于垂直于阳极旋转轴线(R)的平面以第一角度(a)设置,并且部分地位于第二部分(82,120)上,第二部分 与第一部分径向间隔开并相对于该平面以第二角度(β)设置。 第二角度大于第一角度。 不同斜率的部分允许x射线管利用浅角度,同时最小化脚跟效应。
    • 7. 发明申请
    • INDIRECT RADIATION DETECTOR
    • 间接辐射探测器
    • WO2009060341A2
    • 2009-05-14
    • PCT/IB2008/054455
    • 2008-10-29
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.CARMI, RazALTMAN, Ami
    • CARMI, RazALTMAN, Ami
    • G01T1/2928
    • The present invention relates to an indirect radiation detector for detecting radiation (X), e.g. for medical imaging systems. The detector has an array of pixels (P1-P6), each pixel (P) being sub-divided into at least a first and a second sub-pixel (PEl, PE2). Each sub-pixel has a cross- sectional area (Al, A2) parallel to a surface plane (60) of the array. The cross-sectional area (Al) of the first sub-pixel (PEl) is different, e.g. smaller, from the cross- sectional area (A2) of the second sub-pixel (PE2) to provide a dynamic range of detectable flux densities. Additionally, the first sub-pixel (PEl) has a photosensitive device (PSl) arranged on a side of the sub-pixel, said side being substantially orthogonal to said surface plane of the array of pixels to provide a good optical coupling. The detector allows high-flux photon counting with a relatively simple detector design.
    • 本发明涉及一种用于检测辐射(X)的间接辐射检测器,例如用于检测辐射(X)的间接辐射检测器。 用于医学成像系统。 检测器具有像素阵列(P1-P6),每个像素(P)被细分成至少第一和第二子像素(PE1,PE2)。 每个子像素具有平行于阵列的表面平面(60)的横截面积(A1,A2)。 第一子像素(PE1)的横截面积(A1)是不同的,例如, 从第二子像素(PE2)的横截面积(A2)减小,以提供可检测的通量密度的动态范围。 另外,第一子像素(PE1)具有布置在子像素的一侧上的光敏器件(PS1),所述侧与像素阵列的所述表面基本正交以提供良好的光学耦合。 该检测器允许使用相对简单的检测器设计进行高通量光子计数。