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    • 4. 发明授权
    • Panoramic X-ray imaging apparatus
    • 全景X射线成像仪
    • US5600699A
    • 1997-02-04
    • US598442
    • 1996-02-08
    • Masakazu SuzukiKeisuke MoriAkifumi TachibanaKazunari MatobaHitoshi AsaiKazuhisa Miyaguchi
    • Masakazu SuzukiKeisuke MoriAkifumi TachibanaKazunari MatobaHitoshi AsaiKazuhisa Miyaguchi
    • A61B6/00A61B6/14
    • A61B6/4233A61B6/14
    • The present invention provides a panoramic imaging apparatus capable of obtaining a clear tomographic image even when the rotation speed of a swivel member changes. The clock for driving an FFT CCD device in accordance with the TDI method is set on the basis of the angular speed .omega. of the arm detected by a tachogenerator and a function value f (.theta.) which responds to the rotation angle .theta. of the swivel member detected by an angle detector and used to determine a tomographic orbit. The angle detector is provided with a cam having a shape having been set in accordance with the relationship between the rotation angle .theta. and the film feeding speed at the time of performing X-ray panoramic imaging by using photographic films. The signal of the angular speed .omega. and the signal of the function value f (.theta.) corresponding to the angle .theta. are added by an analog multiplier, and subjected to frequency modulation by a V/F converter to create a TDI clock.
    • 本发明提供了即使在旋转构件的转速变化时也能够获得清晰的断层图像的全景成像装置。 根据TDI方法驱动FFT CCD器件的时钟是基于由测速发电机检测到的臂的角速度ω和基于旋转构件的旋转角度θ的函数值f(θ)来设定的 由角度检测器检测并用于确定断层摄影轨道。 该角度检测器设有凸轮,该凸轮具有根据通过使用照相胶片进行X射线全景成像时的旋转角度θ和胶片输送速度之间的关系而设定的形状。 角速度ω的信号和对应于角度θ的函数值f(θ)的信号由模拟乘法器相加,并由V / F转换器进行频率调制以产生TDI时钟。
    • 5. 发明授权
    • X-ray image pickup apparatus for intraoral radiography
    • 用于口腔内摄影的X射线摄像装置
    • US06042267A
    • 2000-03-28
    • US56935
    • 1998-04-08
    • Tetsuhiko MurakiHitoshi AsaiKazuhisa MiyaguchiAkifumi TachibanaMasakazu SuzukiSusumu Kirimura
    • Tetsuhiko MurakiHitoshi AsaiKazuhisa MiyaguchiAkifumi TachibanaMasakazu SuzukiSusumu Kirimura
    • A61B6/14G01T1/20G01T1/29G03B42/04H04N5/32
    • H04N5/32G01T1/2018G03B42/042A61B6/145
    • A phosphor, an optical fiber plate containing lead particles, a CCD, and an X-ray shielding member consisting of copper tungsten are sequentially stacked on a substrate from an X-ray incident surface side and sealed in a container made of a light-shielding synthetic resin. The substrate has projecting portions projecting toward the direction of X-ray incident along three sides of the X-ray incident surface. Each of these projecting portions has an overhang portion projecting toward the optical fiber plate. The overhang portions are close to or in contact with corresponding side surfaces of the optical fiber plate so that the optical fiber plate is fixed at a predetermined position. The container has, in the inner surface, convex portions corresponding to the projecting portions, so the substrate is fixed in the container. The output signal from the CCD is sent to an external display unit via a cable extracted from the convex portion of the container through an FPC connector and an FPC provided on a surface opposite to the incident surface.
    • 含有铅粒子的荧光体,含有铜粒子的CCD和X射线屏蔽部件从X射线入射面侧依次层叠在基板上,并密封在由遮光体 合成树脂。 基板具有沿着X射线入射面的三面入射的X射线方向突出的突出部。 这些突出部分中的每一个具有向光纤板突出的突出部分。 突出部分靠近或与光纤板的相应侧表面接触,使得光纤板固定在预定位置。 该容器在内表面具有与突出部对应的凸部,因此将基板固定在容器中。 来自CCD的输出信号经由通过FPC连接器和设置在与入射面相反的表面上的FPC从容器的凸部抽出的电缆发送到外部显示单元。
    • 7. 发明授权
    • Digital X-ray imaging apparatus
    • 数字X射线成像装置
    • US5677940A
    • 1997-10-14
    • US618991
    • 1996-03-20
    • Masakazu SuzukiKeisuke MoriAkifumi TachibanaKazunari MatobaKoei YamamotoSeiichiro Mizuno
    • Masakazu SuzukiKeisuke MoriAkifumi TachibanaKazunari MatobaKoei YamamotoSeiichiro Mizuno
    • A61B6/00A61B6/06A61B6/14H04N5/32
    • H04N5/32A61B6/14
    • A digital X-ray imaging apparatus comprises an X-ray generator 6 for generating X-rays toward a subject, an X-ray imaging device 7 for detecting an image of X-rays having passed through the subject, a swivel member 4 and a horizontal movement means 8 provided with the X-ray generator 6 and the X-ray imaging device 7 opposed to each other to relatively move the X-ray generator 6 and the X-ray imaging device 7 with respect to the subject, a CPU 21 for producing a tomographic image in accordance with an imaging signal from the X-ray imaging device 7, frame memories and an image display unit 26 for displaying the tomographic image. The X-ray imaging device 7 includes a MOS image sensor having a plurality of two-dimensional light-receiving pixels. With this configuration, a tomographic image along a given tomographic plane can be produced by a signal X-ray imaging operation, and the imaging sensitivity of the digital X-ray imaging apparatus can be enhanced.
    • 数字X射线成像装置包括用于向被检体产生X射线的X射线发生器6,用于检测穿过被检体的X射线的图像的X射线成像装置7,旋转构件4和 设置有彼此相对的X射线发生器6和X射线摄像装置7的相对于被摄体使X射线发生器6和X射线摄像装置7相对移动的水平移动机构8,CPU21 用于根据来自X射线成像装置7的成像信号,帧存储器和用于显示断层图像的图像显示单元26产生断层图像。 X射线成像装置7包括具有多个二维光接收像素的MOS图像传感器。 利用这种配置,可以通过信号X射线成像操作来产生沿着给定的断层摄影平面的断层图像,并且可以提高数字X射线成像装置的成像灵敏度。