专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2008272056A Radiation imaging apparatus 有权
标题翻译：辐射成像装置
公开(公告)号：JP2008272056A
公开(公告)日：2008-11-13
申请号：JP2007116752
申请日：2007-04-26
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： BABA RIKA , UEDA TAKESHI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To highly accurately switch the visual field of the two-dimensional detector of different vertical axis length and horizontal axis length by a simple configuration.
SOLUTION: The X-ray imaging apparatus of this invention is provided with a mechanism for rotating a detection surface centering on one point in a plane including the detection surface of the detector. A rotation center is determined corresponding to a purpose by matching one side of arrangement before rotation and arrangement after the rotation or matching a center line or the like.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过简单的配置，高精度地切换不同垂直轴长度和水平轴长度的二维检测器的视场。解决方案：本发明的X射线成像装置设置有用于使包括检测器的检测表面的平面中的一个点上的检测面旋转的机构。通过在旋转或匹配中心线等之前匹配旋转和排列之前的布置的一侧来确定对应于目的的旋转中心。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2006020680A X-ray measuring apparatus 有权
标题翻译： X射线测量装置
公开(公告)号：JP2006020680A
公开(公告)日：2006-01-26
申请号：JP2004198987
申请日：2004-07-06
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： BABA RIKA , UEDA TAKESHI
IPC分类号： A61B6/03 , G01N23/04 , G01T1/00 , G01T1/17 , G21K3/00 , G21K5/02
摘要： PROBLEM TO BE SOLVED: To provide an X-ray measuring apparatus capable of correcting nonuniformity caused by a filter and providing a favorable three-dimensional image. SOLUTION: This X-ray measuring apparatus is provided with an X-ray source 101 generating X-rays irradiating an examinated object 108, an X-ray detector 102 detecting measurement data on the examinated object 108, a retainer 103 retaining the opposed X-ray source 101 and the X-ray detector 102, a rotating device 104 changing the relative position of the X-ray source 101 and the X-ray detector 102 to the examined object 108, and a control processor 106 computing the measurement data. This apparatus is characterized in that a filter 110 having a cross sectional shape formed by combining a recessed arc, a projecting arc and a straight line together is installed between the X-ray source 101 and the examinated object 108, and while the rotating device 104 rotates, the X-ray source 101 generates the X-rays and the X-ray detector 102 collects the measurement data. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够校正由过滤器引起的不均匀性并提供有利的三维图像的X射线测量装置。解决方案：该X射线测量装置设置有产生照射检查对象物108的X射线的X射线源101，检测检查对象物108的测量数据的X射线检测器102，相对的X射线源101和X射线检测器102，将X射线源101和X射线检测器102相对于被检查对象108的相对位置改变的旋转装置104以及控制处理器106，数据。该装置的特征在于，在X射线源101和检查对象108之间安装具有通过将凹弧，突弧和直线组合而形成的横截面形状的过滤器110，而旋转装置104 旋转时，X射线源101产生X射线，X射线检测器102收集测量数据。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JPH10314152A X-RAY PHOTOGRAPHING DEVICE 失效
公开(公告)号：JPH10314152A
公开(公告)日：1998-12-02
申请号：JP12840497
申请日：1997-05-19
申请人： HITACHI MEDICAL CORP
发明人： BABA RIKA , UEDA TAKESHI , ISHIKAWA KEN
IPC分类号： A61B6/00 , A61B6/03
摘要： PROBLEM TO BE SOLVED: To improve a picture at a high speed by executing moving average arithmetic based on a window width calculated by a scattered X-ray strength distribution function or/and a diffused light strength distribution function so as to generate a blurred component image. SOLUTION: A correction arithmetic means 210 corrects blurring caused by a diffused light component and a scattered X-ray component included in the X-ray image of an examine 209 picked up by a television camera. In the process of generating the blurred component image from a measured image, a filter approximating means approximates a composed filter obtained by composing a scattered X-ray filter and a spread light filter to a triangular wave filter and a rectangular filter calculating means transforms the triangular wave filter to a rectangular filter to replace convolution arithmetic to be required at the time of calculating the blurred component image from the measured image with moving average arithmetic. In addition, a corrected image is generated by taking a difference between the measured image and the blurred component image.

4. 发明专利

JPH10137234A X-RAY TOMOGRAPH 失效
公开(公告)号：JPH10137234A
公开(公告)日：1998-05-26
申请号：JP30302796
申请日：1996-11-14
申请人： HITACHI MEDICAL CORP
发明人： KAWAI HIROYUKI , UEDA TAKESHI , BABA RIKA , UEKI HIRONORI , KAWAGUCHI FUMIO
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To obtain a recomposited image without artifacts by making each of junction lines of a two-dimensional X-ray image pickup means exist on the opposite side of the plane provided with an X-ray source and the rotary center shaft of a wide visual field angle X-ray image-pickup means or absent on a specified perpendicular to a plane, or making the distance of each of junction lines and the plane on the vertical line different from each other. SOLUTION: For a two-dimensional detector array 14 for picking up the images of X-rays transmitted through a subject 7, three two-dimensional detectors 5 are arranged so as to be along the rotary circumference of a scanning driving part 3. At the time, a clearance at the time of joining the two-dimensional detectors 5, that is the junction line, is arranged so as to make the distance of the respective junction lines and the plane on a prescribed vertical line to the plane be different on the respective opposite sides of the plane provided with the X-ray focus 6 of the X-ray source 4 and the rotary center shaft 9. Then, before performing a reconstitution arithmetic operation in a reconstitution arithmetic operation means 12, the omitted data of a junction line part included in projection data photographed at a prescribed projection angle are supplemented by the projection data photographed at the other projection angle.

5. 发明专利

JPH09234192A X-RAY PHOTOGRAPHY DEVICE 失效
公开(公告)号：JPH09234192A
公开(公告)日：1997-09-09
申请号：JP4289296
申请日：1996-02-29
申请人： HITACHI MEDICAL CORP
发明人： UEKI HIRONORI , UEDA TAKESHI , BABA RIKA
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To take an X-ray image of a larger view field angle than a view field angle of an X-ray detector by setting plural X-ray radiation means at a specified interval, rotating the X-ray radiation means and an X-ray image pick-up means about a subject body, and synthesizing the obtained X-ray images to be outputted. SOLUTION: X-ray tubes 1a, 1b fixed on a movable rail 10, and an X-ray detector including a TV camera are provided on a rotary plate 6, so these are rotated about a specimen 11. The sepcimen 11 is placed on a bed top plate 7, and a center of a part of the specimen 11 to be photographed is set around a rotation center of the rotary plate 6. A radiated X-ray is transmitted through the specimen 11 to get into an X-ray grid 2 of the X-ray detector, and after it is converted into a visible light image (optical image) by an X-ray image intensifier 3, the image is formed on a photography element of the TV camera 5. At this, plural X-ray images by both X-ray tubes 1a, 1b are synthesized, and a synthesized image is displayed as a target X-ray image.

6. 发明专利

JPH06205257A PICTURE INPUT AND DISPLAY DEVICE AND X-RAY PICTURE INPUT DEVICE UTILIZING THE DISPLAY DEVICE 失效
公开(公告)号：JPH06205257A
公开(公告)日：1994-07-22
申请号：JP110193
申请日：1993-01-07
申请人： HITACHI MEDICAL CORP
发明人： ONODERA YOICHI , UMETANI KEIJI , FUJIMOTO KOJI , BABA RIKA , UEDA TAKESHI
IPC分类号： A61B6/00 , H04N5/228 , H04N5/321 , H04N7/18
摘要： PURPOSE:To realize the reduction in picture data, the effective utilization of a picture memory at the time of high definition picture image pickup and to improve the image pickup speed at the time of display or the like simultaneously. CONSTITUTION:In the picture input display device provided with a television camera 1 employing an image pickup tube as a means converting an optical image into an electric signal and a means fetching a video signal resulting from A/D-converting a signal outputted from the television camera 1 and outputting the signal while applying picture processing and with a means 5 visualizing and displaying a video signal output resulting from D/A-converting a video signal output from a picture fetch processing means, the picture is received to satisfy a condition of N=kM (1

7. 发明专利

JP2011212036A Radiation imaging system 有权
标题翻译：辐射成像系统
公开(公告)号：JP2011212036A
公开(公告)日：2011-10-27
申请号：JP2010080094
申请日：2010-03-31
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： BABA RIKA
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To reduce the artifact and blur of a reconstitution image by improving the accuracy of correction by obtaining correction quantities relative to a rotary angle and a rotary center position respectively when the rotary angle and the rotary center position come off from assumed values in rotary measuring.SOLUTION: The weight to the rotary angle and the weight to the rotary center position are set, the weights are optimized by repeating reconstitution processing operation while changing the weights, objects characteristic to the reconstitution images obtained by the reconstitution processing operation are extracted, the projected images in respective detecting angles are calculated from the extracted object, the correction quantities relating to the rotary angle and the rotary center position are calculated from the difference from the practically measured projected images, and the differences from a referential parameter are corrected.
摘要翻译：要解决的问题：为了通过在旋转角度和旋转中心位置从假设值脱离时分别获得相对于旋转角度和旋转中心位置的校正量来提高校正精度来减少重构图像的伪像和模糊旋转测量。旋转角度的权重和旋转中心位置的重量被设置，通过在改变重量的同时重复重构处理操作来优化权重，通过重构处理操作获得的重构图像的特征对象是从所提取的对象中计算各个检测角度的投影图像，根据与实际测量的投影图像的差异计算与旋转角度和旋转中心位置有关的校正量，并且校正与参考参数的差异。

8. 发明专利

JP2007330687A Device and program for generating panorama tomographic image 有权
标题翻译：用于产生全景图像的设备和程序
公开(公告)号：JP2007330687A
公开(公告)日：2007-12-27
申请号：JP2006168994
申请日：2006-06-19
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： BABA RIKA , UEDA TAKESHI
IPC分类号： A61B6/14
摘要： PROBLEM TO BE SOLVED: To provide an X-ray measuring instrument capable of obtaining a panorama tomographic image having a thickness in the direction (the depth direction) perpendicular to a body axis of a subject.
SOLUTION: The orbit 401 of a panorama tomographic image forming area is set with a function, and a first point to be noted 402 is set on the orbit at prescribed interval, and also a second point to be noted 503 is set on a line through which the point to be noted 402 and the deployment center 400 are connected. An X-ray source position 404 where the normal 403 of the orbit 401 passes, and a position 406 on a detector 405 are obtained concerning the first point to be noted, and data within an angular range around the positions are added by weighting so as to be defined as tomographic data of the first point to be noted 402. The same processing is performed relative to the second point to be noted so as to obtain the tomographic data of the second point to be noted 503. The kinds of tomographic data are added by weighting so as to be defined as the final tomographic data of the first point to be noted 402. The same processing is performed relative to the points to be noted on the orbit 401 and the final tomographic data of each point to be noted are made to be stuck together, so that panoramic image data is generated.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决问题的方法：提供能够获得与被检体的体轴垂直的方向（深度方向）的厚度的全景断层图像的X射线测定装置。解决方案：利用功能设置全景断层图像形成区域的轨道401，并且以规定的间隔在轨道上设置要注意的第一点402，并且将要注意的第503点503设置在要注意的点402和展开中心400连接的线。获得轨道401的通常403通过的X射线源位置404和关于要注意的第一点的检测器405上的位置406，并且通过加权来加上位置周围的角度范围内的数据，以便被定义为要注意的第一点的断层数据402.相对于要注意的第二点执行相同的处理，以便获得要注意的第二点的断层数据503。断层数据的种类是通过加权来加权，以被定义为要标记的第一点402的最终断层数据。相对于在轨道401上要注意的点执行相同的处理，并且要注意的每个点的最终断层数据是使其卡在一起，从而生成全景图像数据。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2002022678A X-RAY MEASURING INSTRUMENT 失效
公开(公告)号：JP2002022678A
公开(公告)日：2002-01-23
申请号：JP2000213370
申请日：2000-07-10
申请人： HITACHI MEDICAL CORP
发明人： BABA RIKA , UEDA TAKESHI
IPC分类号： G01N23/04 , G01T1/00 , G01T7/00 , G21K1/02
摘要： PROBLEM TO BE SOLVED: To provide an X-ray measuring instrument for diagnosis having high spatial resolving power and high sensitivity. SOLUTION: The X-ray measuring instrument has an X-ray source generating X-rays from an X-ray focus 20, an X-ray detector 24 wherein a plurality of detection elements having insensitive parts 28, 28' and the sensitive parts 27, 27' surrounded by them are two-dimensionally arranged, a data processing means for collecting the output signals of the detection elements to perform data processing and an X-ray grid arranged between the X-ray focus and the X-ray detector at a predetermined distance with respect to the position of the X-ray focus and having X-ray transmission members 25, 26 alternately arranged thereto in a first direction. The cycle in the first direction of the linear projection image to the detection surface of the X-ray detector of the X-ray shielding member by X-rays is substantially set to an integral multiple of 2 or more of the cycle of the arrangement of the X-ray detection elements in the first direction. An image of a large visual field having no moire is obtained.

10. 发明专利

JP2001145622A METHOD AND APPARATUS FOR X-RAY TOMOGRAPHY 失效
公开(公告)号：JP2001145622A
公开(公告)日：2001-05-29
申请号：JP33227999
申请日：1999-11-24
申请人： HITACHI MEDICAL CORP
发明人： KAWAI HIROYUKI , BABA RIKA , OKAJIMA KENICHI
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide a projection data correcting means for always obtaining a good-quality reconstituted image without receiving influence from the variation of X-ray irradiation and measurement conditions at the time of measuring an examinee, an X-ray tomography apparatus. SOLUTION: This projection data correcting means includes a measuring part 1, a data processing part 2 for image reconstitution and a control part 3. The part 3 is provided with an X-ray irradiation and measurement condition recording means 15, and a preprocessing part 10 is provided with a projection data correcting means 16. The recording means 15 records X-ray irradiation and measurement conditions at the time of measurement, namely an X-ray tube current, an X-ray irradiation pulse width and the detected sensitivity of a two-dimensional X-ray detector 6 at the time of irradiating X-rays from an X-ray source (X-ray tube) 5. The correcting means 16 executes the correcting processing of projection data based on a parameter showing the X-ray irradiation and measurement conditions recorded in the recording means 15 and corrects the gain variation of measurement data proportional to the X-ray tube current, an X-ray irradiation pulse width and the detected sensitivity of the detector 6.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式