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1. 发明专利

JP2011194032A X-ray ct imaging apparatus 审中-公开
标题翻译： X射线CT成像装置
公开(公告)号：JP2011194032A
公开(公告)日：2011-10-06
申请号：JP2010064070
申请日：2010-03-19
申请人： Morita Mfg Co Ltd , Nihon Univ , 学校法人日本大学 , 株式会社モリタ製作所
发明人： ARAI YOSHINORI , SUZUKI MASAKAZU , YOSHIMURA TAKAHIRO
IPC分类号： A61B6/03 , A61B6/14
摘要： PROBLEM TO BE SOLVED: To provide a technology for improving resolution of an image in X-ray CT imaging.SOLUTION: In a state where an X-ray generator 13 and an X-ray detector 21 for emitting X-ray cone beam BX1 are made opposite to each other, they are rotated by an angle of rotation wherein a fan angle of the X-ray cone beam BX1 is added to 180 degrees to collect projection data, with a center of an imaged area CA (a part of a dental arch) as a rotary center. While rotating, the X-ray generator 13 and the X-ray detector 21 are rotated so that a high scattering region HSR high in degree of X-ray scattering is interposed between the X-ray generator 13 and the imaged area CA. Thus, a deterioration in picture quality of an X-ray image caused by scattering of the X-ray in the high scattering region HSR is suppressed.
摘要翻译：要解决的问题：提供一种用于提高X射线CT成像中的图像分辨率的技术。解决方案：在X射线发生器13和用于发射X射线锥束BX1的X射线检测器21的状态下使其旋转一个旋转角度，其中将X射线锥形束BX1的扇角加到180度以收集投影数据，其中成像区CA的中心（牙科的一部分拱）作为旋转中心。旋转时，旋转X射线发生器13和X射线检测器21，使得在X射线发生器13和成像区域CA之间插入高度X射线散射的高散射区域HSR。因此，抑制由高散射区域HSR中的X射线的散射引起的X射线图像的图像质量的劣化。

2. 发明专利

JP2011147728A Apparatus, method and program for image generation 有权
标题翻译：用于图像生成的装置，方法和程序
公开(公告)号：JP2011147728A
公开(公告)日：2011-08-04
申请号：JP2010013402
申请日：2010-01-25
申请人： Morita Mfg Co Ltd , Nihon Univ , 学校法人日本大学 , 株式会社モリタ製作所
发明人： ARAI YOSHINORI , SUZUKI MASAKAZU
IPC分类号： A61B6/03 , G06T15/08 , G06T19/00
摘要： PROBLEM TO BE SOLVED: To provide technique for generating a tomographic image suitable for diagnosis from three-dimensional data. SOLUTION: An image generating apparatus generates a tomographic image from three-dimensional data of an object obtained by X-ray CT photographing. The apparatus includes: a visual axial direction setting part for setting the visual axial direction to the object; a slice condition setting part capable of individually setting at least one of thickness of an image generating slice obtained from a three-dimensional area represented by the three-dimensional data for generating the tomographic image and an interval for obtaining the image generating slice; and an image generating part for synthesizing the three dimensional data included in a plurality of image generating slices obtained from the three-dimensional area based on the condition set by the slice condition setting part to generate a plurality of slice images along the visual axial direction as the tomographic image. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供从三维数据生成适于诊断的断层图像的技术。解决方案：图像生成装置从通过X射线CT拍摄获得的对象的三维数据生成断层图像。该装置包括：用于将视觉轴向设置到物体的视轴向方向设定部; 切片条件设定部，其能够分别设定由用于生成断层图像的三维数据所表示的三维区域获得的图像生成切片的厚度和获取图像生成切片的间隔中的至少一个; 以及图像生成部，其基于由条件设定部设定的条件，合成从所述三维区域获得的多个图像生成片段中包含的三维数据，以沿着视轴方向生成多个切片图像，断层图像。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2013240584A Image processing apparatus, x-ray ct scanner and image processing method 有权
标题翻译：图像处理设备，X射线CT扫描仪和图像处理方法
公开(公告)号：JP2013240584A
公开(公告)日：2013-12-05
申请号：JP2013089946
申请日：2013-04-23
申请人： Nihon Univ , 学校法人日本大学 , Morita Mfg Co Ltd , 株式会社モリタ製作所
发明人： ARAI YOSHINORI , SUZUKI MASAKAZU
IPC分类号： A61B6/03 , A61B6/14
CPC分类号： G06T7/0012 , A61B6/5258 , G06T11/008
摘要： PROBLEM TO BE SOLVED: To provide a technique for appropriately specifying the position of a metallic body in a CT scanning area.SOLUTION: An image processing apparatus 80 acquires virtual projection data 21D obtained at the time when a virtual metallic body having a prescribed X-ray absorption factor is disposed virtually in a scanning area of X-ray CT scanning, by an operation, based on ordinary projection data 11D, and acquires virtual CT image data 22D by reconstituting the data 21D. Then, the image processing apparatus 80 acquires luminance of the virtual metallic body (virtual metallic body luminance 31D) in the virtual CT image data 22D and specifies the position of a metal equivalent region having the luminance corresponding to the virtual metal luminance 31D in ordinary CT image data 12D. Moreover, the image processing apparatus 80 acquires corrected projection data 51D by performing correction processing that corrects the luminance of the metal equivalent region in the ordinary projection data 11D, and by reconstituting the data 51D, it acquires corrected CT image data 52D.
摘要翻译：要解决的问题：提供一种适当指定金属体在CT扫描区域中的位置的技术。解决方案：图像处理装置80获取在具有规定的X射线的虚拟金属体时获得的虚拟投影数据21D，通过基于普通投影数据11D的操作，实际上将X射线吸收因子设置在X射线CT扫描的扫描区域中，并通过重构数据21D获取虚拟CT图像数据22D。然后，图像处理装置80获取虚拟CT图像数据22D中的虚拟金属体（虚拟金属体亮度31D）的亮度，并指定在普通CT中具有与虚拟金属亮度31D对应的亮度的金属等效区域的位置图像数据12D。此外，图像处理装置80通过执行校正普通投影数据11D中的金属等效区域的亮度的校正处理来获取校正投影数据51D，并且通过重构数据51D，获取校正的CT图像数据52D。

4. 发明专利

JP2013135842A X-ray ct imaging device 有权
标题翻译： X射线CT成像装置
公开(公告)号：JP2013135842A
公开(公告)日：2013-07-11
申请号：JP2012256090
申请日：2012-11-22
申请人： Morita Mfg Co Ltd , 株式会社モリタ製作所 , Nihon Univ , 学校法人日本大学
发明人： ARAI YOSHINORI , HONJO MAKOTO , SUZUKI MASAKAZU , KIRIMURA SUSUMU , YOSHIKAWA HIDEMOTO
IPC分类号： A61B6/03 , A61B6/14
CPC分类号： A61B6/14 , A61B6/06 , A61B6/405 , A61B6/4441 , A61B6/501 , A61B6/542
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT imaging device capable of appropriately irradiating the region of interest with X-rays even when a height with respect to a revolving X-ray generator is different with respect to a revolving direction, reducing unnecessary X-ray exposure dose, and surely performing X-ray CT imaging of the region of interest.SOLUTION: This X-ray CT imaging device 1 for performing X-ray CT imaging of a CT imaging area CA in a subject M1 includes: an X-ray generation section 10 for generating X-rays; a beam formation mechanism 13 for shielding and restricting an irradiation range of the X-ray generated by the X-ray generation section 10 to form an X-ray cone beam BX with which the CT imaging area CA is irradiated; and an X-ray detection section 20 for detecting the X-ray cone beam BX directed to the subject M1. During the X-ray CT imaging when a revolving arm 30 is revolving, the expansion in the length direction of the X-ray cone beam BX, which is restricted by length direction shielding plates 14, is adapted to the shape of the CT imaging area CA in accordance with the revolution position of the revolving arm 30.
摘要翻译：要解决的问题：为了提供即使当相对于旋转X射线发生器的高度相对于旋转方向不同的情况下，也能够利用X射线适当地照射感兴趣区域的X射线CT成像装置，减少不必要的 X射线照射剂量，并确定对感兴趣区域进行X射线CT成像。解决方案：用于对象M1中的CT成像区CA进行X射线CT成像的X射线CT成像装置1包括：用于产生X射线的X射线产生部分10; 光束形成机构13，用于屏蔽和限制由X射线产生部分10产生的X射线的照射范围，以形成照射CT成像区域CA的X射线锥形束BX; 以及用于检测指向被检体M1的X射线锥束BX的X射线检测部20。在旋转臂30旋转的X射线CT成像中，由长度方向遮蔽板14限制的X射线锥形束BX的长度方向的膨胀适应CT成像区域的形状 CA根据旋转臂30的旋转位置。

5. 发明专利

JP2013135765A X-ray ct imaging apparatus, and x-ray ct imaging method 有权
标题翻译： X射线CT成像装置和X射线CT成像方法
公开(公告)号：JP2013135765A
公开(公告)日：2013-07-11
申请号：JP2011288158
申请日：2011-12-28
申请人： Nihon Univ , 学校法人日本大学 , Morita Mfg Co Ltd , 株式会社モリタ製作所
发明人： ARAI YOSHINORI , YOSHIKAWA HIDEMOTO , SUZUKI MASAKAZU , NAKAI SHOJI , YASUDA KOJI
IPC分类号： A61B6/14 , A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT imaging apparatus and an X-ray CT imaging method, allowing the reduction of unnecessary X-ray exposure dose and allowing the certain X-ray CT imaging of a region of interest by setting a proper imaging region while properly emitting an X-ray cone beam.SOLUTION: An X-ray generation part 10 generating X-rays and an X-ray detection part 20 detecting the X-ray cone beam BX whose irradiation range is restricted by a beam shaping mechanism 13 and which is emitted to a subject are turned around the subject, and the beam shaping mechanism 13 is controlled by a body control part 60 such that an elliptic CT imaging region CAa becomes a nearly elliptic shape having the long direction along a dental arch region X according to the set elliptic CT imaging region CAa operation-inputted by an operation display part 61 displaying a dental arch image 211 and a CT imaging region-setting screen 200 receiving the setting operation of the elliptic CT imaging region CAa to the dental arch region X.
摘要翻译：要解决的问题：为了提供X射线CT成像设备和X射线CT成像方法，允许减少不必要的X射线曝光剂量并且通过设置感兴趣区域来进行某些X射线CT成像正确的成像区域，同时正确地发射X射线锥形束。解决方案：产生X射线的X射线产生部分10和X射线检测部分20，其检测X射线锥束BX，其照射范围受到光束的限制成像机构13被发射到被检体上，并且束体成形机构13由身体控制部60控制，使得椭圆形CT成像区域CAa成为具有沿着牙齿的长方向的近似椭圆形状根据由显示牙弓图像211的操作显示部61输入的设定的椭圆形CT成像区域CAa和接收椭圆CT成像区域的设定动作的CT摄像区域设定画面200，在CAa到牙弓区域X.

6. 发明专利

JP2012055683A X-ray imaging apparatus 有权
标题翻译： X射线成像装置
公开(公告)号：JP2012055683A
公开(公告)日：2012-03-22
申请号：JP2011160809
申请日：2011-07-22
申请人： Morita Mfg Co Ltd , Nihon Univ , 学校法人日本大学 , 株式会社モリタ製作所
发明人： ARAI YOSHINORI , SUZUKI MASAKAZU , YOSHIMURA TAKAHIRO , HONJO MAKOTO
IPC分类号： A61B6/14 , A61B6/03
CPC分类号： A61B6/14 , A61B6/03 , A61B6/035 , A61B6/06 , A61B6/4452 , A61B6/4476 , A61B6/469 , A61B6/501 , A61B6/542 , A61B2034/2059
摘要： PROBLEM TO BE SOLVED: To provide a technique which can reduce the quantity of an object exposed to an X-ray and make an X-ray detecting surface compact.SOLUTION: In an X-ray imaging apparatus for carrying out an X-ray CT image recording, under a state that an X-ray generator 13 for generating an X-ray cone beam BX1 is opposed to an X-ray detector 21 for detecting the X-ray cone beam BX1 applied to the object with the object (specifically, the image object OB) held between them, the X-ray generator 13 and the X-ray detector 21 are turned by 180. While the X-ray generator 13 and the X-ray detector 21 are turned by 180, the X-ray generator 13 is moved so as to move a turning reference point CP set on an optical axis CB of the X-ray cone beam BX1 on a prescribed ellipse for one round. Thus, a CT image area CA to be imaged by applying the X-ray cone beam BX1 is set to be substantially triangular.
摘要翻译：要解决的问题：提供一种可以减少暴露于X射线的物体的量并使X射线检测表面紧凑的技术。解决方案：在用于执行X射线CT图像记录的X射线成像装置中，在用于产生X射线锥形束BX1的X射线产生器13与X射线检测器如图21所示，用于检测施加到物体的X射线锥形束BX1（具体地，被摄体OB）保持在它们之间，X射线发生器13和X射线检测器21转动180° 0 。当X射线发生器13和X射线检测器21转动180° o 时，X射线发生器13被移动以便移动转动参考点CP集在规定的椭圆上的X射线锥形束BX1的光轴CB上一圈。因此，通过应用X射线锥形束BX1成像的CT图像区域CA被设定为大致三角形。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2011136027A X-ray ct imaging apparatus, and reconfiguration processing method 审中-公开
标题翻译： X射线CT成像装置及重构处理方法
公开(公告)号：JP2011136027A
公开(公告)日：2011-07-14
申请号：JP2009297837
申请日：2009-12-28
申请人： Morita Mfg Co Ltd , Nihon Univ , 学校法人日本大学 , 株式会社モリタ製作所
发明人： ARAI YOSHINORI , SUZUKI MASAKAZU
IPC分类号： A61B6/03 , A61B6/14
摘要： PROBLEM TO BE SOLVED: To provide a technique for suppressing the generation of an artifact in a CT image.
SOLUTION: The X-ray CT imaging apparatus includes: an X-ray generation part for radiating an X-ray cone beam toward a subject; an X-ray detection part for detecting the X-ray cone beam; a support part for supporting the X-ray generation part and the X-ray detection part so as to face each other holding the subject therebetween; a turning drive part for performing X-ray CT imaging by rotary driving the support part and turning the X-ray generation part and the X-ray detection part around the object; and an arithmetic processing part for reconfiguring projection data acquired in the X-ray CT imaging and generating three-dimensional data. The arithmetic processing part uses only the projection data obtained by radiating the X-ray cone beam from respective directions of a projection angle of just 180 degrees as the processing object of a reconfiguration operation for any point inside the X-ray CT imaging area.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于抑制CT图像中的伪像的产生的技术。解决方案：X射线CT成像设备包括：X射线产生部分，用于向受试者辐射X射线锥束; 用于检测X射线锥形束的X射线检测部; 用于支撑X射线产生部分和X射线检测部分的支撑部分，以便彼此面对; 旋转驱动部，其通过旋转驱动所述支撑部并且使所述X射线产生部和所述X射线检测部旋转到所述物体周围来进行X射线CT成像; 以及用于重新配置在X射线CT成像中获取的投影数据并生成三维数据的算术处理部分。算术处理部仅使用通过从X射线CT成像区域内的任意点的重新配置运算的处理对象，将来自180度的投影角度的各个方向的X射线锥形光束照射而得到的投影数据。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2003000587A X-ray sensor unit and x-ray radiographing device using the same 有权
标题翻译： X射线传感器单元和使用其的X射线放射性装置
公开(公告)号：JP2003000587A
公开(公告)日：2003-01-07
申请号：JP2001190731
申请日：2001-06-25
申请人： Morita Mfg Co Ltd , Univ Nihon , 学校法人日本大学 , 株式会社モリタ製作所
发明人： ARAI YOSHINORI , SUZUKI MASAKAZU
IPC分类号： G01T1/24 , A61B6/00 , A61B6/14 , H01L27/14 , H04N5/32 , H04N7/18
摘要： PROBLEM TO BE SOLVED: To provide an X-ray sensor unit in which a problem caused by a joint between imaging devices can be solved while using a directly connected two-dimensional(2D) semiconductor X-ray imaging device. SOLUTION: When successively providing, a plurality of 2D semiconductor X-ray imaging devices 2a equipped with detection surfaces 2d where imaging planes 2f are directly laminated just under X-ray incident planes 2e, in the form of line to link the detection surfaces 2d, the 2D semiconductor X-ray imaging devices 2a are successively provided so that a successive providing plane 2h can be inclined to a direction vertical to a successive providing line direction R formed by such successive providing and that the successive providing line direction R can be vertical to a scanning direction D for scanning X-rays transmitted through an object.
摘要翻译：要解决的问题：提供一种在使用直接连接的二维（2D）半导体X射线成像装置的同时可以解决由成像装置之间的关节引起的问题的X射线传感器单元。解决方案：当连续提供多个配有检测表面2d的2D半导体X射线成像装置2a，其中成像面2f直接层叠在X射线入射平面2e的下方，以线的形式连接检测表面2d，二维半导体X射线摄像装置2a被连续地设置，使得连续的提供平面2h可以垂直于通过这种连续提供形成的连续的提供线方向R的方向倾斜，并且连续的提供线方向R可以垂直于用于扫描透过物体的X射线的扫描方向D.

9. 发明专利

JP2004136027A Image processing device 审中-公开
标题翻译：图像处理装置
公开(公告)号：JP2004136027A
公开(公告)日：2004-05-13
申请号：JP2002305875
申请日：2002-10-21
申请人： Morita Mfg Co Ltd , Univ Nihon , 学校法人日本大学 , 株式会社モリタ製作所
发明人： ARAI YOSHINORI , SUZUKI MASAKAZU
IPC分类号： A61B6/14 , G06T1/00 , H04N7/18 , G06T17/40
摘要： PROBLEM TO BE SOLVED: To obtain a three-dimensional image of high precision.
SOLUTION: An X-ray generator 44 and an X-ray detector 47 are provided in positions with a photographed object 49 held between, and the X-ray generator 44 and the X-ray detector 47 are rotated around the photographed object 49 as an axis. The photographed object 49 is irradiated with X-rays from the X-ray generator 44 to obtain an original image, and the three-dimensional image of the photographed body 49 is composed from the original image by calculation processing. A two-dimensional image is extracted from the three-dimensional image, and image processing is performed to the extracted two-dimensional image to reconstruct the three-dimensional image. When obtaining the three-dimensional image of the photographed object 49 obtained by irradiating the photographed object 49 with the X-rays from the X-ray generator 44, the X-ray generator 44 and the X-ray detector 47 are rotated while changing the irradiating direction of the X-rays irradiated from the X-ray generator.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：获得高精度的三维图像。解决方案：将X射线发生器44和X射线检测器47设置在被保持在其间的拍摄对象49的位置处，并且X射线发生器44和X射线检测器47围绕拍摄对象旋转 49为轴。从X射线发生器44照射拍摄对象49，得到原始图像，通过计算处理从原始图像构成拍摄体49的三维图像。从三维图像中提取二维图像，并且对所提取的二维图像进行图像处理以重建三维图像。当获得通过用X射线发生器44的X射线照射拍摄对象49获得的拍摄对象49的三维图像时，X射线发生器44和X射线检测器47在改变从X射线发生器照射的X射线的照射方向。版权所有（C）2004，JPO

10. 发明专利

JP2006204953A Local radiation x-ray computed tomography system 有权
标题翻译：局部放射X射线计算机图像系统
公开(公告)号：JP2006204953A
公开(公告)日：2006-08-10
申请号：JP2006107497
申请日：2006-04-10
申请人： Morita Mfg Co Ltd , Univ Nihon , 学校法人日本大学 , 株式会社モリタ製作所
发明人： ARAI YOSHINORI , SUZUKI MASAKAZU , TACHIBANA AKIFUMI
IPC分类号： A61B6/14 , A61B6/03 , G06T1/00
摘要： PROBLEM TO BE SOLVED: To provide a local radiation X-ray computed tomography (CT) system by which an X-ray exposure dose is suppressed and imaging time is shortened in acquiring sectional images of a focus location of an object. SOLUTION: A rotary arm 3 is fixed at the center position of a virtual focus location Q so as to include the locus of a conical ortho-X-ray beam 1a required for acquiring a panoramic image of a dental arch S, a part of an object O, and turned within a scope of angle according to the imaging conditions, while locally radiating the conical ortho-X-ray beam 1a including only the virtual focus location from an X-ray generator to orderly produce X-ray projection images of the dental arch S on a two-dimensional X-ray image sensor 2. From the X-ray projection images of the dental arch S orderly produced on the two-dimensional X-ray image sensor 2, only partial X-ray projection images produced by the conical ortho-X-ray beam 1b are extracted and processed by image calculation. Thus three-dimensional X-ray absorption coefficient distribution information is taken out as image information to produce panoramic images of the dental arch S. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种局部放射X射线计算机断层摄影（CT）系统，通过该系统可以抑制X射线曝光剂量并且在获取物体的焦点位置的截面图像时缩短成像时间。解决方案：旋转臂3固定在虚拟聚焦位置Q的中心位置处，以包括获取牙弓S的全景图像所需的圆锥形正射X射线束1a的轨迹，对象O的一部分，并且根据成像条件在角度范围内转动，同时从X射线发生器局部辐射仅包括虚拟聚焦位置的圆锥形正射X射线束1a以有序地产生X射线投影在二维X射线图像传感器2上的牙弓S的图像。从二维X射线图像传感器2上有序产生的牙弓S的X射线投影图像仅仅是部分X射线投射通过图像计算提取并处理由圆锥形正X射线束1b产生的图像。因此，将三维X射线吸收系数分布信息作为图像信息取出以产生牙弓的全景图像。（C）2006，JPO＆NCIPI

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