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118 条记录 (耗时 0.027 秒)

    Radiographic image pickup apparatus
    1.
    发明授权
    Radiographic image pickup apparatus 失效
    射线照相摄像装置

    公开(公告)号：US4954706A

    公开(公告)日：1990-09-04

    申请号：US330495

    申请日：1989-03-30

    申请人： Tetsuhiko Takahashi ,  Kenichi Okajima ,  Hiroshi Takeuchi

    发明人： Tetsuhiko Takahashi ,  Kenichi Okajima ,  Hiroshi Takeuchi

    IPC分类号： G01T1/00 ,  G01T1/20 ,  G01T1/29 ,  G21K4/00 ,  H01L27/14 ,  H01L27/146 ,  H01L31/09 ,  H04N5/32 ,  H05G1/64

    CPC分类号： G01T1/2018 ,  G01T1/246 ,  G21K4/00 ,  H01L27/14676 ,  H05G1/64 ,  H01L27/14663

    摘要： A radiographic image pickup apparatus for diagnosis using an image detector in which a phosphor layer for converting an X-ray image into an optical image, a photoconductive layer for storing an optical image as a latent image, light-emitting means for exciting the photoconductive layer segment by segment are laminated into a plate form, wherein one of the electrodes sandwiching the photoconductive layer and the light-emitting means are respectively divided into array-formed elements in directions orthogonal to each other, and an element selection circuit for successively selecting these elements and reading out said latent image in time sequential electric signal is formed integrally on the substrate of the image detector.

    摘要翻译： 一种用于使用图像检测器进行诊断的放射线照相图像拾取装置，其中将用于将X射线图像转换成光学图像的荧光体层，用于存储光学图像作为潜像的光电导层，用于激发光电导层的发光装置 分段地层叠成板状，其中将光电导层和发光装置夹持的电极中的一个在彼此正交的方向上分别划分成阵列形成的元件，以及用于连续选择这些元件的元件选择电路 并且在时间序列电信号中读出所述潜像一体地形成在图像检测器的基板上。

    Radiation imaging sensor
    2.
    发明授权
    Radiation imaging sensor 失效
    辐射成像传感器

    公开(公告)号：US5059794A

    公开(公告)日：1991-10-22

    申请号：US517382

    申请日：1990-05-01

    申请人： Tetsuhiko Takahashi ,  Kenichi Okajima ,  Ken Ueda

    发明人： Tetsuhiko Takahashi ,  Kenichi Okajima ,  Ken Ueda

    IPC分类号： G01T1/20 ,  G01T1/26 ,  H01L31/0224 ,  H01L31/0232 ,  H01L31/08 ,  H01L31/16

    CPC分类号： G01T1/2018 ,  G01T1/26 ,  H01L31/022466 ,  H01L31/02322 ,  H01L31/085 ,  H01L31/161

    摘要： A radiation imaging sensor including laminate structure of a phosphorescent layer, a light-transmissive electrode, a photoconductor layer, an insulating layer and an electrode, an applied voltage to the photoconductor layer through the light-transmissive electrode and the electrode is increased sufficiently so that light emitted from the phosphorescent member causes avalanche multiplicaton of the electrons and/or positive holes generated in the photoconductor layer by field sweep inside the photoconductor layer.

    摘要翻译： 包括磷光层，透光电极，感光体层，绝缘层和电极的层叠结构的放射线摄像传感器，通过透光电极和电极向感光体层施加的电压充分增加，使得 从磷光部件发出的光通过在感光体层内的场扫描引起在感光体层中产生的电子和/或空穴的雪崩乘法。

    Inspection apparatus using nuclear magnetic resonance
    3.
    发明授权
    Inspection apparatus using nuclear magnetic resonance 失效
    使用核磁共振的检查装置

    公开(公告)号：US5928146A

    公开(公告)日：1999-07-27

    申请号：US815069

    申请日：1997-03-11

    申请人： Hiroyuki Itagaki ,  Kenichi Okajima ,  Tetsuhiko Takahashi ,  Kenji Takiguchi

    发明人： Hiroyuki Itagaki ,  Kenichi Okajima ,  Tetsuhiko Takahashi ,  Kenji Takiguchi

    IPC分类号： G01R33/561 ,  A61B5/055

    CPC分类号： G01R33/56554

    摘要： An inspection apparatus using nuclear magnetic resonance having arithmetic and control means for controlling a pulse sequence for detecting a nuclear magnetic resonance signal from a target to be inspected and calculating the detected signal. The arithmetic and control means controls an echo planar pulse sequence for acquiring a plurality of images of a predetermined same region of the target to be inspected; and arranges echo signal data obtained by measuring the inspection target by the echo planar pulse sequence and forms an EPI data set; designates a plurality of data points in k-space as observed points; designates a predetermined EPI data set to reference data for body motion for correcting influence by the body motion of the inspection target and calculates a reference phase as a phase of the body motion reference data at the observed points; calculates the phase of the EPI data set at the observed points; calculates a body motion correcting value expressing the influence by the body motion of the inspection target by using the phase difference between the phase of the EPI data set and the reference phase; and executes a process for eliminating the influence by the body motion of the inspection target by removing the phase difference of the EPI data set of the target to be inspected by using the body motion correction values.

    摘要翻译： 一种使用核磁共振的检查装置，具有算术和控制装置，用于控制用于检测来自待检查目标的核磁共振信号的脉冲序列，并计算检测信号。 算术和控制装置控制回波平面脉冲序列，用于获取待检查目标的预定相同区域的多个图像; 并且通过回波平面脉冲序列排列通过测量检查对象获得的回波信号数据，并形成EPI数据组; 指定k空间中的多个数据点作为观察点; 将预定的EPI数据集指定为身体运动的参考数据，以校正由检查对象的身体运动产生的影响，并计算参考相位作为观察点处的身体运动参考数据的相位; 计算观测点处EPI数据集的相位; 通过使用EPI数据集的相位与参考相位之间的相位差来计算表示由检查对象的身体运动产生的影响的身体运动校正值; 并且通过使用身体运动校正值来去除被检查对象的EPI数据集的相位差来消除检查对象的身体运动的影响的处理。

    Information reading apparatus for radiation image
    5.
    发明授权
    Information reading apparatus for radiation image 失效
    辐射图像信息读取装置

    公开(公告)号：US4806757A

    公开(公告)日：1989-02-21

    申请号：US924735

    申请日：1986-10-30

    申请人： Tsuyoshi Kano ,  Tetsuhiko Takahashi ,  Kenichi Okajima ,  Kenji Umetani ,  Saburo Ataka ,  Hisatake Yokouchi ,  Ryuichi Suzuki

    发明人： Tsuyoshi Kano ,  Tetsuhiko Takahashi ,  Kenichi Okajima ,  Kenji Umetani ,  Saburo Ataka ,  Hisatake Yokouchi ,  Ryuichi Suzuki

    IPC分类号： C09K11/61 ,  G01T1/29 ,  G21K4/00 ,  G02B26/10

    CPC分类号： C09K11/616 ,  G01T1/2012 ,  G01T1/2014 ,  G21K4/00

    摘要： When the laser-stimulable phosphor plate of an information reading apparatus for radiation image is constituted of CsI as the base and 0.0003 to 0.03% in atomic ratio of Na, the output signal of the information reading apparatus can be increased and the decay time thereof can be shortened. When output signals are produced by detecting fluorescence emitted from a fluoroscopic plate disposed in confrontation with the laser-stimulable phosphor plate, there is provided an information reading apparatus for radiation image having an improved S/N ratio and a high efficiency of taking in laser-stimulated luminescence. Further, instead of Na or together with Na, there may be added at least one element selected from the group consisting of Li, K, Rb, Cu, Au, Be, Mg, Ca, Sr, Ba, Zn, Cd, Hg, B, Al, Ga, In, Tl, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Si, Ti, Zr, Ge, Sn, Pb, As, Sb, and Bi. In this case, the total content of these elements is set to be 0.00001 to 1% in atomic ratio.

    摘要翻译： 当用于放射线图像的信息读取装置的激光可刺激的磷光体板以CsI为基准，以Na原子比为0.0003〜0.03％时，信息读取装置的输出信号可以增加，其衰减时间可以 缩短。 当通过检测由与激光可激发的荧光体板对置设置的荧光检查板发出的荧光而产生输出信号时，提供了一种具有改善的S / N比和具有高激光吸收能力的高效率的放射线图像的信息读取装置， 刺激发光。 此外，代替Na或与Na一起，可以添加至少一种选自Li，K，Rb，Cu，Au，Be，Mg，Ca，Sr，Ba，Zn，Cd，Hg， B，Al，Ga，In，Tl，Sc，Y，La，Ce，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb，Lu，Si，Ti，Zr，Ge， Sn，Pb，As，Sb和Bi。 在这种情况下，这些元素的总含量以原子比设定为0.00001〜1％。

    High-frequency coil unit and magnetic resonance imaging device
    8.
    发明授权
    High-frequency coil unit and magnetic resonance imaging device 有权
    高频线圈单元和磁共振成像装置

    公开(公告)号：US09274189B2

    公开(公告)日：2016-03-01

    申请号：US13512090

    申请日：2010-11-29

    申请人： Yoshihisa Soutome ,  Hideta Habara ,  Yoshitaka Bito ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi ,  Hisaaki Ochi

    发明人： Yoshihisa Soutome ,  Hideta Habara ,  Yoshitaka Bito ,  Hiroyuki Takeuchi ,  Tetsuhiko Takahashi ,  Hisaaki Ochi

    IPC分类号： G01R33/34 ,  G01R33/48 ,  G01R33/345 ,  G01R33/36

    CPC分类号： G01R33/34046 ,  G01R33/34053 ,  G01R33/34076 ,  G01R33/3453 ,  G01R33/3657 ,  G01R33/3678

    摘要： There is provided a technique for securing a large examination space in a tunnel type MRI device without inviting increase of manufacturing cost and without significantly reducing irradiation efficiency or uniformity of the irradiation intensity distribution in an imaging region. Between rungs of a partially cylindrical RF coil, which coil corresponds to a cylindrical RF coil of which part is removed, there are disposed half-loops generating magnetic fields, which are synthesized with magnetic fields generated by loops constituted by adjacent rungs of the partially cylindrical RF coil and rings connecting the rungs to generate a circularly polarized or elliptically polarized magnetic field. Further, high-frequency signals of the same reference frequency having a desired amplitude ratio and phase difference are supplied to the partially cylindrical RF coils and half-loops.

    摘要翻译： 提供了一种用于在隧道式MRI装置中确保大的检查空间的技术，而不会增加制造成本，并且不显着降低成像区域中的照射强度分布的照射效率或均匀性。 在部分圆柱形RF线圈的两个梯级之间，该线圈对应于部分被去除的圆柱形RF线圈，设置有产生磁场的半环，该磁场由具有由部分圆柱形的相邻梯级构成的环产生的磁场合成 RF线圈和环连接梯级以产生圆偏振或椭圆偏振磁场。 此外，具有期望幅度比和相位差的相同参考频率的高频信号被提供给部分圆柱形RF线圈和半环。

    Magnetic resonance examination apparatus and antenna device
    9.
    发明授权
    Magnetic resonance examination apparatus and antenna device 有权
    磁共振检查仪和天线装置

    公开(公告)号：US09182463B2

    公开(公告)日：2015-11-10

    申请号：US13577885

    申请日：2011-01-21

    申请人： Hideta Habara ,  Yoshitaka Bito ,  Hisaaki Ochi ,  Yoshihisa Soutome ,  Masayoshi Dohata ,  Tetsuhiko Takahashi ,  Hiroyuki Takeuchi

    发明人： Hideta Habara ,  Yoshitaka Bito ,  Hisaaki Ochi ,  Yoshihisa Soutome ,  Masayoshi Dohata ,  Tetsuhiko Takahashi ,  Hiroyuki Takeuchi

    IPC分类号： G01R33/34

    CPC分类号： G01R33/34046

    摘要： There is provided a technique for securing a comfortable examination space in a tunnel type MRI apparatus without increasing the manufacturing cost of the MRI apparatus and sacrificing performance thereof. In an RF coil provided with a hollow-shaped outer conductive element and a strip-shaped conductive element disposed along the outer conductive element in the axial direction, meander lines constituting the strip-shaped conductive element are disposed at uneven distances from the outer conductive element to secure an internal space. In order to obtain uniform sensitivity at the center of the RF coil, the strip-shaped conductive element is constituted with N of connected meander lines, and length of the strip-shaped conductive element is adjusted so that, in the strip-shaped conductive element resonating at resonance frequency of the antenna, nodes are formed in a number of (M+1)×N−1, wherein M is 0 or a natural number of 1 or larger.

    摘要翻译： 提供了一种用于在隧道式MRI装置中确保舒适检查空间而不增加MRI装置的制造成本并牺牲其性能的技术。 在具有中空状的外部导电元件的RF线圈和沿着外部导电元件沿轴向设置的条状导电元件，构成条形导电元件的曲折线设置在与外部导电元件不均匀的距离处 以确保内部空间。 为了在RF线圈的中心获得均匀的灵敏度，带状导电元件由N个连接的曲折线构成，并且条形导电元件的长度被调节，使得在带状导电元件 在天线的谐振频率下共振，以（M + 1）×N-1的数量形成节点，其中M为0或自然数为1或更大。

    Magnetic resonance imaging apparatus and magnetic resonance imaging method
    10.
    发明授权
    Magnetic resonance imaging apparatus and magnetic resonance imaging method 有权
    磁共振成像装置和磁共振成像方法

    公开(公告)号：US08594767B2

    公开(公告)日：2013-11-26

    申请号：US12523343

    申请日：2008-02-01

    申请人： Masahiro Takizawa ,  Tetsuhiko Takahashi

    发明人： Masahiro Takizawa ,  Tetsuhiko Takahashi

    IPC分类号： A61B5/05

    CPC分类号： A61B5/055 ,  A61B5/7285 ,  G01R33/5616 ,  G01R33/56375 ,  G01R33/56383 ,  G01R33/5673

    摘要： When multiple types of imaging are performed while moving a table on which a subject to be examined is placed, an imaging efficiency is improved and a high-quality image is obtained within a short time. Therefore, within a predetermined time interval such as an identical period of a periodic living body motion, a predetermined number of echo signals from each of the multiple types of imaging sequences are acquired and the table on which the subject to be examined is placed is moved. Along with the movement of the table, data items within the same range in the Ky-direction as to each of the imaging sequences are acquired, the moving speed of the table is controlled in such a manner that the acquired data items become continuous in the x-direction, and images are reconstructed based on the data items obtained respectively from the imaging sequences.

    摘要翻译： 当在移动要被检查对象的表格的同时执行多种类型的成像时，提高成像效率并且在短时间内获得高质量图像。 因此，在诸如周期性生物体运动的相同周期的预定时间间隔内，获取来自多种类型的成像序列中的每一种的预定数量的回波信号，并且移动放置被检查对象的表 。 随着桌子的移动，获取与每个成像序列相同的Ky方向上的数据项，表格的移动速度被控制成使获取的数据项在 x方向，并且基于从成像序列分别获得的数据项重建图像。