公开(公告)号：US08908829B2

公开(公告)日：2014-12-09

申请号：US13581498

申请日：2011-02-23

Applicant: Masatoshi Watanabe ,  Taihei Mukaide ,  Kazuhiro Takada ,  Kazunori Fukuda

Inventor： Masatoshi Watanabe ,  Taihei Mukaide ,  Kazuhiro Takada ,  Kazunori Fukuda

IPC: G01T1/20 ,  G01N23/02 ,  G01T1/00 ,  A61B6/00

CPC classification number: G01T1/00 ,  A61B6/485 ,  G01N23/02 ,  G01N2223/505 ,  G01N2223/646 ,  G01T1/20 ,  G21K4/00

Abstract: Provided is an X-ray imaging apparatus and an X-ray imaging method that offer an alternative for a refraction contrast method.A first scintillator and a second scintillator are used, the first scintillator generating first fluorescent light when X-rays separated by the separating element are incident thereon, and a second scintillator generating second fluorescent light when X-rays separated by the separating element are incident thereon. The second scintillator has a fluorescence emission intensity gradient such that an amount of emitted fluorescent light changes in accordance with a change in a position at which the X-rays are incident.

Abstract translation: 提供了提供折射对比度方法的替代方案的X射线成像装置和X射线成像方法。 使用第一闪烁器和第二闪烁体，当由分离元件分离的X射线入射时，第一闪烁体产生第一荧光，当由分离元件分离的X射线入射时产生第二荧光的第二闪烁体 。 第二闪烁体具有荧光发射强度梯度，使得发射的荧光的量根据X射线入射的位置的变化而改变。

公开(公告)号：US07492857B2

公开(公告)日：2009-02-17

申请号：US11671923

申请日：2007-02-06

Applicant: Takashi Yasunaga ,  Brian Graves ,  Gerhardt E. Schweinert ,  Paul Michael Ratzmann

Inventor： Takashi Yasunaga ,  Brian Graves ,  Gerhardt E. Schweinert ,  Paul Michael Ratzmann

IPC: H05G1/64 ,  G21K1/02

CPC classification number: A61B6/4035 ,  A61B6/032 ,  G01N2223/316 ,  G01N2223/32 ,  G01N2223/505 ,  H01L27/14658

Abstract: A CT detector includes a scintillator module including at least one scintillator configured to be impinged with radiographic energy from a radiographic energy source, at least one indexing pin connected to the scintillator module, and a collimator assembly having at least one comb, wherein the collimator assembly defines a relative position of the at least one comb, and wherein the at least one comb has a plurality of teeth configured to engage the at least one indexing pin.

Abstract translation: CT检测器包括闪烁体模块，该闪烁体模块包括至少一个闪烁体，该闪烁体被配置为与来自射线照相能量源的射线照相能量相撞，连接到闪烁体模块的至少一个分度引脚和具有至少一个梳子的准直器组件，其中准直器组件 限定所述至少一个梳子的相对位置，并且其中所述至少一个梳子具有被配置为接合所述至少一个分度销的多个齿。

公开(公告)号：US4897549A

公开(公告)日：1990-01-30

申请号：US286269

申请日：1988-12-19

Applicant: Tadeusz W. Zerda ,  Bruce Miller ,  C. A. Quarles

Inventor： Tadeusz W. Zerda ,  Bruce Miller ,  C. A. Quarles

IPC: G01N15/08 ,  G01N23/00 ,  G01Q90/00

CPC classification number: G01N23/00 ,  G01N15/08 ,  G01N2223/01 ,  G01N2223/108 ,  G01N2223/202 ,  G01N2223/505 ,  G01N2223/649

Abstract: A method is shown for measuring naturally occurring pores in a specimen material. A positron is emitted from a radioactive source and enters a material to pick up an electron to form positronium. The positronium decays very rapidly into two gamma rays. The lifetime of the positronium depends on the size of the pore it is trapped within. The larger the pore, the longer the positronium will last. By measuring the decay rate of positrons over an extended time scale in the range from 30 to 500 nsec., a near relation can be developed between positronium lifetime and pore diameter.

Abstract translation: 示出了用于测量样品材料中的天然存在的孔的方法。 正电子从放射源发射并进入材料以吸收电子以形成正电子。 正电子在两个γ射线中迅速衰减。 正电子的寿命取决于被捕获的孔隙的大小。 孔隙越大，正电子将持续时间越长。 通过在30〜500nsec范围内测量正电子在延长时间尺度上的衰减速率，可以在正电子寿命和孔径之间形成近似关系。