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1. 发明专利

JP2013099639A X-ray tomographic apparatus 有权
标题翻译： X-RAY TOMOGRAPHIC设备
公开(公告)号：JP2013099639A
公开(公告)日：2013-05-23
申请号：JP2013038204
申请日：2013-02-28
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO , WATANABE SEIKI , GONO MAKOTO
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To improve image quality of dual energy tomographic images obtained by helical scan of an X-ray tomographic apparatus having a plurality of X-ray tubes.SOLUTION: An X-ray CT apparatus includes: a bed for placing a subject; a first X-ray generator and a second X-ray generator for generating X-rays; an X-ray detector which is disposed to face the first and second X-ray generators and collects projection data; a rotating part for rotating the first and second X-ray generators with the body axis of the subject as the axis; and a photographing control part which performs helical scan by relatively moving the first and second X-ray generators and the bed while rotating the first and second X-ray generators. The X-ray CT apparatus further includes an X-ray projection data control means which collects X-ray projection data at positions in the same body axis direction and at the same view angle, as respective X-ray projection data based on the X-rays generated from each of the first and second X-ray generators.
摘要翻译：要解决的问题：提高通过具有多个X射线管的X射线断层摄影装置的螺旋扫描获得的双能量断层图像的图像质量。解决方案：X射线CT装置包括：用于放置受试者的床; 用于产生X射线的第一X射线发生器和第二X射线发生器; X射线检测器，设置成面对第一和第二X射线发生器并收集投影数据; 旋转部件，用于使被检体的身体轴线作为轴线旋转第一和第二X射线发生器; 以及拍摄控制部，其通过在旋转所述第一和第二X射线发生器的同时相对移动所述第一和第二X射线发生器和所述床来执行螺旋扫描。 X射线CT装置还包括：X射线投影数据控制装置，其以与X射线投影数据相同的X射线投影数据为基础，以相同的体轴方向和相同的视角的位置收集X射线投影数据，从每个第一和第二X射线发生器产生的光线。版权所有（C）2013，JPO＆INPIT

2. 发明专利

JP2012210290A Image generating apparatus and x-ray ct apparatus, and program 有权
标题翻译：图像发生装置和X射线CT装置及程序
公开(公告)号：JP2012210290A
公开(公告)日：2012-11-01
申请号：JP2011076934
申请日：2011-03-31
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To generate, with excellent image quality, monochromatic images equivalent to images obtained by performing X-ray CT photographing of a photographing object with the X-ray of desired effective X-ray energy.SOLUTION: On the basis of data obtained by X-ray CT dual energy photographing of a photographing object, a material density image indicating a virtual density distribution of a basis material of the photographing object in a model indicating the photographing object by the composition of one set of two kinds of basis materials is generated for each basis material, for two or more sets of the basis materials in which at least one of the basis materials constituting a set is different. Then, the pixel value of each pixel of the monochromatic image is obtained by weighting addition of the pixel values of corresponding pixels of the pixel with each other in the respective material density images by a set of the basis materials determined on the basis of information related to the size of the X-ray absorption coefficient of the material indicated by the pixel among the two or more sets of the basis materials.
摘要翻译：要解决的问题：为了以优异的图像质量产生与通过用所需有效X射线能量的X射线进行拍摄对象的X射线CT拍摄获得的图像相当的单色图像。解决方案：基于通过拍摄对象的X射线CT双能量拍摄获得的数据，指示由指示拍摄对象的模型中的拍摄对象的基础材料的虚拟浓度分布的材料密度图像对于每种基础材料，对于构成一组的基础材料中的至少一个不同的两组或多组基础材料，生成一组两种基础材料的组成。然后，通过在各个材料密度图像中通过基于相关信息确定的一组基础来对像素的相应像素的像素值进行加权相加来获得单色图像的每个像素的像素值相对于两组以上的基材中的像素所示的材料的X射线吸收系数的大小。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2011133395A Radiation detector and radiographic device 审中-公开
标题翻译：辐射探测器和放射性设备
公开(公告)号：JP2011133395A
公开(公告)日：2011-07-07
申请号：JP2009294093
申请日：2009-12-25
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO
IPC分类号： G01T1/20 , A61B6/00 , A61B6/03
摘要： PROBLEM TO BE SOLVED: To maintain a high geometric radiation utilization efficiency in a radiation detector having a scintillator array laminated on the light receiving surface side of a photodiode array and having each reflector caught between each scintillator, even if detection elements (scintillators and photodiodes) are sized down.
SOLUTION: The reflectors 532 between the scintillators 521 are disposed or formed so that at least part of a surface arranged adjacent to or abutting against the scintillators 521 and an array direction (x) thereof is inclined toward a radiation transmission direction XD, thereby narrowing or eliminating a width of a path of radiation 7 passing through the reflectors 532 to the photodiode 511 side and not passing through the scintillators 521, that is, a region not contributing to the geometric radiation utilization efficiency.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了在具有层叠在光电二极管阵列的光接收表面侧上并且每个反射器夹在每个闪烁体之间的具有闪烁体阵列的辐射检测器中保持高几何辐射利用效率，即使检测元件（闪烁体和光电二极管）的尺寸。解决方案：闪烁体521之间的反射器532设置或形成为使得与闪烁体521相邻或邻接的表面的至少一部分和阵列方向（x）朝向辐射透射方向XD倾斜，从而使穿过反射器532的辐射7的路径的宽度变窄或消除到光电二极管511侧，并且不通过闪烁体521，即不对几何辐射利用效率有贡献的区域。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2011110223A Beam-forming x-ray filter, and x-ray ct apparatus using the same 有权
标题翻译：波束形成X射线滤光片，以及X射线CT装置
公开(公告)号：JP2011110223A
公开(公告)日：2011-06-09
申请号：JP2009269445
申请日：2009-11-27
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO
IPC分类号： A61B6/03 , G21K3/00
摘要： PROBLEM TO BE SOLVED: To provide a beam-forming X-ray filter, equalizing the beam quality of the X-ray so as to equalize the image quality in a center part and a peripheral part of an imaging field.
SOLUTION: The beam-forming X-ray filter (21) is disposed between a subject and an X-ray tube (20) which generates the X-ray, so that X-ray intensity distribution is adjustable in an X-ray radiation range in a channel direction of an X-ray detector (23) disposed to face the X-ray tube over the subject. The beam-forming X-ray filter (21) has a plurality of shielding parts to shield the X-ray, and a plurality of transmission parts to transmit the X-ray alternately in the channel direction.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种束形成X射线滤波器，使X射线的光束质量均匀化，以均衡成像场的中心部分和周边部分的图像质量。解决方案：射束形成X射线过滤器（21）设置在对象和产生X射线的X射线管（20）之间，使得X射线强度分布可以在X射线 X射线检测器（23）的通道方向上的X射线辐射范围，被设置为面对X射线管。射束形成用X射线过滤器（21）具有多个用于遮蔽X射线的遮蔽部，以及多个透射部，以在通道方向上交替地透射X射线。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2011092481A X-ray ct apparatus 审中-公开
标题翻译： X射线CT装置
公开(公告)号：JP2011092481A
公开(公告)日：2011-05-12
申请号：JP2009249995
申请日：2009-10-30
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO , OWAN IKUMI , KAWAGUCHI BOTATSU
IPC分类号： A61B6/10 , A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide a X-ray CT apparatus measurable of an estimate value of radiation exposure dosage of a subject more accurately. SOLUTION: A mounting base 12 for mounting a subject comprises an X-ray intensity measuring means 14 stored inside for measuring X-ray at each position of a body axis direction (z direction) of the subject. The result is that an estimate value of the radiation exposure dosage of the subject 40 can be obtained more accurately based on the X-ray intensity reflected with the size and the shape of the z direction measured on the mounting base 12 when the subject is actually scanned. The X-ray intensity measuring means 14, for example, is mounted with a plurality of X-ray sensors 14a of ionization chambers and semiconductors to the z direction. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供可以更精确地测量受试者的辐射照射剂量的估计值的X射线CT装置。解决方案：用于安装被检体的安装基座12包括内部存储的用于在被检体的体轴方向（z方向）的各位置测量X射线的X射线强度测量单元14。结果是，当被摄体实际上是基于在安装基座12上测量的尺寸和形状的z方向反映的X射线强度时，可以更准确地获得对象40的辐射照射剂量的估计值扫描。 X射线强度测量装置14例如在z方向上安装有多个电离室和半导体的X射线传感器14a。版权所有（C）2011，JPO＆INPIT

6. 发明专利

JP2011005018A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2011005018A
公开(公告)日：2011-01-13
申请号：JP2009152214
申请日：2009-06-26
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO , IMAI YASUHIRO
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus for precisely obtaining an image by dual energy imaging by compensating deviation in an X-ray focal area which is caused by switching of X-ray tube voltages.SOLUTION: Setting voltage Ea1, Eb1 to be applied to first and second focusing electrodes for forming an electric field where size or the position of an X-ray focal region is in a prescribed state under X-ray tube voltage V1 and setting voltage Ea2, Eb2 to be applied to the first and second focusing electrodes for forming an electric field where size or the position of the X-ray focal region is in the same prescribed state under X-ray tube voltage V2 are obtained in advance and are stored. Voltage Ea, Eb to be applied to the first and second focusing electrodes are switched to the setting voltage Ea1, Eb1 and the setting voltage Ea2, Eb2 in accordance with switching of X-ray tube voltage V according to the angle of view θ when performing dual energy imaging.
摘要翻译：要解决的问题：提供一种用于通过补偿由X射线管电压的切换引起的X射线焦点区域的偏差，通过双能量成像精确获得图像的X射线CT装置。解决方案：设定电压Ea1， Eb1施加到第一和第二聚焦电极，用于形成X射线焦点区域的尺寸或位置在X射线管电压V1和规定电压Ea2，Eb2的X射线焦点区域的规定状态下形成电场获得用于形成电场的第一和第二聚焦电极，其中X射线焦点区域的尺寸或位置在X射线管电压V2下处于相同的规定状态，并被存储。将施加到第一和第二聚焦电极的电压Ea，Eb根据在执行时的视角θ根据X射线管电压V的切换而切换到设定电压Ea1，Eb1和设定电压Ea2，Eb2 双能量成像。

7. 发明专利

JP2010233616A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2010233616A
公开(公告)日：2010-10-21
申请号：JP2009082153
申请日：2009-03-30
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO , HAGIWARA AKIRA
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To further improve the quality of tomographic images while performing shooting at a high speed when a shooting method by which helical scan and stationary scan at the ends of its linear movement range is performed and tomographic images of positions in a range wider than the linear movement range are reconstituted is used. SOLUTION: The opening of a collimator is controlled so that it may be narrower during stationary scan in parts in the anterior half or the posterior half in the traveling direction of helical scan and corresponding to the outside of the linear movement range during stationary scan than that during the stationary scan. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：当进行在其线性移动范围的末端的螺旋扫描和静止扫描的拍摄方法以及在其中的位置的断层图像时，进行高速拍摄时的断层图像的质量的进一步提高使用比线性移动范围更宽的范围重新构成。
解决方案：准直器的打开被控制，使得它可以在螺旋扫描的行进方向的前半部或后半部分的静止扫描期间更窄，并且在静止期间对应于线性运动范围的外部扫描比在静止扫描期间。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2009297314A X-ray tomographic apparatus 审中-公开
标题翻译： X-RAY TOMOGRAPHIC设备
公开(公告)号：JP2009297314A
公开(公告)日：2009-12-24
申请号：JP2008156085
申请日：2008-06-16
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO , WATANABE SEIKI , GONO MAKOTO
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To improve the image quality of a dual-energy tomographic image by the helical scan of an X-ray tomographic apparatus having a plurality of X-ray tubes.
SOLUTION: The X-ray CT apparatus 100 comprises: a bed 12 for placing a subject; a first X-ray generator 21-1 for generating X-rays; a second X-ray generator 21-2 for generating X-rays; an X-ray detector 24 disposed to face the first and second X-ray generators for collecting projection data; a rotating part 15 for rotating the first and second X-ray generators with the body axis of the subject as the axis; a tomography control part 37 for performing the helical scan by relatively moving the first and second X-ray generators and the bed while rotating the first and second X-ray generators by the rotating part; and an X-ray projection data control means for collecting X-ray projection data at positions in the same direction of body axis at the same view angle as respective X-ray projection data based on the X-rays generated from the first X-ray generator and the second X-ray generator respectively.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过具有多个X射线管的X射线断层摄影装置的螺旋扫描来提高双能量断层图像的图像质量。解决方案：X射线CT装置100包括：用于放置被检体的床12; 用于产生X射线的第一X射线发生器21-1; 用于产生X射线的第二X射线发生器21-2; 设置为面对第一和第二X射线发生器以收集投影数据的X射线检测器24; 旋转部15，用于使被检体的体轴作为轴的第一和第二X射线发生器旋转; 断层摄影控制部37，用于通过相对移动第一和第二X射线发生器和床，同时通过旋转部旋转第一和第二X射线发生器来执行螺旋扫描; 以及X射线投影数据控制装置，用于基于从第一X射线产生的X射线以与各X射线投影数据相同的视角收集与体轴相同方向的位置处的X射线投影数据发电机和第二台X射线发生器。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2009178517A Image processor and x-ray ct system 有权
标题翻译：图像处理器和X射线CT系统
公开(公告)号：JP2009178517A
公开(公告)日：2009-08-13
申请号：JP2008022724
申请日：2008-02-01
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO
IPC分类号： A61B6/03
CPC分类号： A61B6/482
摘要： PROBLEM TO BE SOLVED: To provide an image processor capable of extracting and/or dividing continuous regions for each identical substance with respect to an image such as a tomogram, and to provide an X-ray CT system having the image processor.
SOLUTION: This image processor for processing an image using image data acquired by capturing the image of a subject by the X-ray CT system, specifies the continuous region of a desired substance by a substance-dependent information image acquired based on first projection data which are acquired by capturing the image of the subject using an X-ray having a first energy spectrum, and a second projection data which are acquired by capturing the image of the subject using an X-ray having a second energy spectrum, and divides and/or extracts the continuous region of the predetermined substance in the image acquired by capturing the image of the subject.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供能够针对诸如断层图像的图像提取和/或分割每个相同物质的连续区域的图像处理器，并提供具有图像处理器的X射线CT系统。解决方案：用于使用通过X射线CT系统捕获对象的图像而获取的图像数据来处理图像的图像处理器，通过基于第一（第二）获取的物质相关信息图像指定所需物质的连续区域通过使用具有第一能谱的X射线捕获被检体的图像而获取的投影数据和通过使用具有第二能量谱的X射线捕获被检体的图像而获取的第二投影数据，以及在通过拍摄对象的图像获取的图像中划分和/或提取预定物质的连续区域。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2009178342A X-ray ct system 有权
标题翻译： X射线CT系统
公开(公告)号：JP2009178342A
公开(公告)日：2009-08-13
申请号：JP2008020125
申请日：2008-01-31
申请人： Ge Medical Systems Global Technology Co Llc , ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー
发明人： NISHIDE AKIHIKO
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT system allowing a user to select a scan prioritizing the reduction of exposure or a scan prioritizing an image quality according to an imaging site or purpose.
SOLUTION: This X-ray CT system is provided with: an X-ray generator 21; a collimator 23 forming an X-ray beam in the body axial direction of a subject; a collimator control section 39 for controlling the collimator; an X-ray detector 24 disposed to face an X-ray source and the collimator while sandwiching a subject; a gantry rotation section 15 for rotating the X-ray generator and the X-ray detector; an imaging condition setting section 35 for setting an exposure reduction mode for reducing the exposure amount onto the subject or the image priority mode for improving the quality of a subject's image; and an image reconstruction section 34 relatively moving the gantry rotation section with respect to the subject while rotating it to capture the image of a cylindrical imaging region and reconstructing the image based on projection data obtained through the X-ray detector.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种X射线CT系统，允许用户根据成像位置或目的选择优先曝光的优先级或扫描优先级图像质量的扫描。解决方案：该X射线CT系统具有：X射线发生器21; 准直器23，其在被检体的体轴方向上形成X射线束; 用于控制准直仪的准直器控制部39; X射线检测器24，被配置成与夹在被检体上的X射线源和准直仪相对; 用于使X射线发生器和X射线检测器旋转的台架旋转部15; 成像条件设定部分35，用于设置用于减少被摄体的曝光量的曝光减少模式或用于提高被摄体图像质量的图像优先模式; 以及图像重建部分34，用于在旋转它的同时使台架旋转部分相对移动以捕获圆柱形成像区域的图像，并且基于通过X射线检测器获得的投影数据重建图像。版权所有（C）2009，JPO＆INPIT

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