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91. 发明专利

JP2009095405A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2009095405A
公开(公告)日：2009-05-07
申请号：JP2007267679
申请日：2007-10-15
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 , GONO MAKOTO
IPC分类号： A61B6/03 , G06T1/00 , G06T5/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/405 , A61B6/482 , A61B6/541 , G06T11/006 , G06T2211/408
摘要： PROBLEM TO BE SOLVED: To provide a dual energy image reconstruction unit by switching X-ray tube voltages every view. SOLUTION: An X-ray CT apparatus (100) includes an X-ray irradiation unit (30) for applying X-rays based on a first X-ray tube voltage and X-rays based on a second X-ray tube voltage to a subject by being switched every one view, a projection data acquisition unit (40) for acquiring projection data by which X-ray tube voltage information about the applied X-rays are identified, and an image reconstruction unit (34) for identifying first energy projection data based on the first X-ray tube voltage, second energy projection data based on the second X-ray tube voltage, and transient energy projection data acquired upon switching between the first and second X-ray tube voltages based on the X-ray tube voltage information, the image reconstruction unit including a conversion processor (35) that converts the transient energy projection data to another data using the transient energy projection data and performs image reconstruction using the data subsequent to the conversion process. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过每个视图切换X射线管电压来提供双能量图像重建单元。解决方案：X射线CT装置（100）包括基于第一X射线管电压施加X射线的X射线照射单元（30）和基于第二X射线管的X射线通过每一视图切换到被摄体的电压;投影数据获取单元，用于获取识别关于所施加的X射线的X射线管电压信息的投影数据;以及图像重建单元，用于识别基于第一X射线管电压的第一能量投影数据，基于第二X射线管电压的第二能量投影数据和基于X的第一和第二X射线管电压之间切换时获取的瞬态能量投影数据所述图像重建单元包括转换处理器（35），其使用所述瞬态能量投影数据将所述瞬态能量投影数据转换为另一数据，并且使用所述转换处理之后的数据进行图像重建。版权所有（C）2009，JPO＆INPIT

92. 发明专利

JP2008168039A X-ray generator and x-ray ct apparatus 有权
标题翻译： X射线发生器和X射线CT装置
公开(公告)号：JP2008168039A
公开(公告)日：2008-07-24
申请号：JP2007005724
申请日：2007-01-15
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 , H05G1/00 , H05G1/52
摘要： PROBLEM TO BE SOLVED: To easily change the position and size of an X-ray focal point into the desired ones in an X-ray generator for allowing electron beams from a cathode to linearly collide with an anode without changing an orbit.
SOLUTION: The X-ray generator comprises: an X-ray tube having the anode, including an electron collision surface generating the X-rays by the collision with the electron beams, and the cathode, including a plurality of electron generation sources respectively having substantially the same thermoelectron generation capacities and also arranged to allow the generated respective electron beams to linearly collide with the electron collision surface and to allow the collision positions to be adjacent at prescribed interval; and an X-ray control means for controlling the X-ray tube, thereby selectively generating one or not less than two adjacent electron beams among the plurality of electron beams based on the plurality of electron generation sources, and generating the plurality of kinds of X-ray beams different in the position and size of the X-ray focal point.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了在X射线发生器中容易地将X射线焦点的位置和尺寸改变为期望的位置和尺寸，以允许来自阴极的电子束与阳极直线相撞而不改变轨道。解决方案：X射线发生器包括：具有阳极的X射线管，包括通过与电子束的碰撞产生X射线的电子碰撞表面，以及包括多个电子发生源的阴极分别具有基本上相同的热电子产生能力，并且还被布置成允许所产生的各个电子束与电子碰撞表面线性碰撞，并允许碰撞位置以规定的间隔相邻; 以及用于控制X射线管的X射线控制装置，从而基于多个电子发生源选择性地在多个电子束中产生一个或不少于两个相邻的电子束，并且生成多种X 射线光束在X射线焦点的位置和大小上不同。版权所有（C）2008，JPO＆INPIT

93. 发明专利

JP2008154669A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2008154669A
公开(公告)日：2008-07-10
申请号：JP2006344149
申请日：2006-12-21
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 , NUKUI MASAYASU
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus capable of reconstructing a tomographic image which reduces the occurrence of artifacts and shows information on the distribution of atoms constituting a subject.
SOLUTION: The X-ray CT apparatus includes: an X-ray data acquisition means which acquires projection data of X rays transmitting through the subject between an X-ray generating device for emitting X rays and an X-ray detector opposed to the X-ray generating device for detecting the X rays while rotating them about the center of the rotation in a position between them; and an image reconstructing means for reconstructing an image of the projection data acquired from the X-ray data acquisition means. The X-ray data acquisition means includes a means which emits X rays by sequentially switching a plurality of X-ray tube voltages and acquires X-ray projection data acquired by the irradiation of X rays of each X-ray tube voltage. The image reconstructing means includes a means which performs correction processing depending on two kinds of X-ray tube voltages before and after the switching for an interval of the changeover between the plurality of X-ray tube voltages.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供能够重建断层图像的X射线CT装置，其减少伪影的发生并且显示关于构成被摄体的原子的分布的信息。解决方案：X射线CT装置包括：X射线数据获取装置，其获取用于发射X射线的X射线产生装置和与X射线相对的X射线检测器之间通过被检体发射的X射线的投影数据， X射线产生装置，用于在它们之间的位置围绕旋转中心旋转X射线; 以及图像重建装置，用于重建从X射线数据获取装置获取的投影数据的图像。 X射线数据获取装置包括通过顺序地切换多个X射线管电压而发射X射线的装置，并且获取通过每个X射线管电压的X射线的照射获得的X射线投影数据。图像重建装置包括一个装置，该装置根据在多个X射线管电压之间的切换间隔的切换前后的两种X射线管电压进行校正处理。版权所有（C）2008，JPO＆INPIT

94. 发明专利

JP2008148970A X-ray ct system 审中-公开
标题翻译： X射线CT系统
公开(公告)号：JP2008148970A
公开(公告)日：2008-07-03
申请号：JP2006340795
申请日：2006-12-19
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 , ISHIHARA YOTARO
IPC分类号： A61B6/03 , G06T1/00
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT system which displays tomographic images having image quality optimized for reading by applying an image filter of image feature quantity dependence type to each local region of the tomographic image having the image reconstructed by using a reconstruction function for emphasizing high-frequency region components and is ready to display and adjust the tomographic image without lacking the high-frequency region components before applying the image filter. SOLUTION: The image processing for applying the image filter to the tomographic image in which the high-frequency region components are emphasized is performed not at the image reconstruction of the tomographic image but at displaying the tomographic image. When the tomographic image is saved, the tomographic image before applying the image filter is saved. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种X射线CT系统，其通过将具有图像特征量依赖类型的图像滤波器应用于具有由图像特征量依赖类型重建的图像的断层图像的每个局部区域来显示具有针对读取优化的图像质量的断层图像使用强调高频区域分量的重建功能，并且准备好在施加图像滤波器之前不缺少高频区域分量来显示和调整断层图像。解决方案：用于将图像滤波器应用于其中强调高频区域分量的断层图像的图像处理不是在断层图像的图像重建而是在显示断层图像时进行。当保存断层图像时，保存应用图像滤波器之前的断层图像。版权所有（C）2008，JPO＆INPIT

95. 发明专利

JP2008125909A X-ray ct apparatus 审中-公开
标题翻译： X射线CT装置
公开(公告)号：JP2008125909A
公开(公告)日：2008-06-05
申请号：JP2006316100
申请日：2006-11-22
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 , G06T1/00
摘要： PROBLEM TO BE SOLVED: To provide a X-ray CT apparatus having large an imaging field which can be controlled the size of an imaging field.
SOLUTION: The X-ray focus position of a X-ray generating device or the position of a X-ray detector is moved to change the imaging field size.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种可以控制成像场的尺寸的具有大的成像场的X射线CT装置。解决方案：移动X射线产生装置的X射线焦点位置或X射线检测器的位置以改变成像场尺寸。版权所有（C）2008，JPO＆INPIT

96. 发明专利

JP2008119095A X-ray ct system and scattering correction method 有权
标题翻译： X射线CT系统和散射校正方法
公开(公告)号：JP2008119095A
公开(公告)日：2008-05-29
申请号：JP2006304074
申请日：2006-11-09
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： HAGIWARA AKIRA , NUKUI MASAYASU , NISHIDE AKIHIKO , GONO MAKOTO
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To enable the correction of a high-precision scattering according to the size of a specimen or the like.
SOLUTION: An X-ray tube and an X-ray detector are arranged facing each other sandwiching the specimen to reconstruct a CT image from a projection data obtained by scanning the subject. The X-ray CT system is provided with a means for determining the transmission length of X rays transmitted from the projection data, a means which determines the angle of scattering of scattered rays entering respective X-ray detection surfaces from the transmission length previously determined and the positional relationship with the X-ray detector, a means which determines differentiated sectional areas of the respective scattered rays from information by which the relationship is previously regulated between the angle of scattering determined and the differentiated sectional areas of scattering according to the angle of scattering, a means which determines a scattering coefficient indicating the ratio of the intensity of the scattered rays with respect to the intensity of the X rays transmitted from the differentiated sectional areas determined and a means which carries out the correction of scattering in the projection data from the intensities of X rays detected on the respective X-ray detection surfaces and the scattering coefficients determined corresponding to the respective X rays transmitted.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了根据样品的尺寸等进行高精度散射的校正。解决方案：X射线管和X射线检测器被布置成彼此夹着样本，以从通过扫描对象获得的投影数据重构CT图像。 X射线CT系统设置有用于确定从投影数据发射的X射线的透射长度的装置，确定从先前确定的透射长度进入各个X射线检测表面的散射光的散射角度的装置，以及与X射线检测器的位置关系，确定相应散射光线的分辨截面面积的装置，该信息通过该信息预先根据散射角确定的散射角与分散的散射面积之间的关系被调节确定表示散射光强度相对于从确定的微分截面积发射的X射线的强度的比率的散射系数的手段，以及从投影数据中进行散射校正的装置在各自的X射线检测强度 X射线检测表面和与所发射的各X射线相对应确定的散射系数。版权所有（C）2008，JPO＆INPIT

97. 发明专利

JP2008012206A X-ray tomographic apparatus 审中-公开
标题翻译： X-RAY TOMOGRAPHIC设备
公开(公告)号：JP2008012206A
公开(公告)日：2008-01-24
申请号：JP2006188935
申请日：2006-07-10
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 , HACHIMAN MITSURU
IPC分类号： A61B6/03
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus taking the photography with a plurality of kinds of X-ray energy by using an X-ray tube. SOLUTION: The X-ray CT apparatus 100 comprises a cathode 61 which emits electrons; an anode 51 which receives the electrons to generate X rays; the X-ray tube 21 with a plurality of focus forming means for forming a first focal point FP1 and a second focal point FP2 on the same surface of the anode; a collection part for collecting the projection data of a plurality of views of a subject for each X ray generated from the plurality of X-ray focal points; and an image reconstruction part 3 for reconstructing the tomographic image based on the projection data. The subject is irradiated with first energy SXE and second energy LXE. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过使用X射线管摄影具有多种X射线能量的X射线CT装置。解决方案：X射线CT装置100包括发射电子的阴极61; 接收电子以产生X射线的阳极51; 具有多个聚焦形成装置的X射线管21，用于在阳极的同一表面上形成第一焦点FP1和第二焦点FP2; 收集部，用于收集从多个X射线焦点生成的每个X射线的被摄体的多个视图的投影数据; 以及用于基于投影数据重建断层图像的图像重建部分3。受试者用第一能量SXE和第二能量LXE照射。版权所有（C）2008，JPO＆INPIT

98. 发明专利

JP2007325853A X-ray ct apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：JP2007325853A
公开(公告)日：2007-12-20
申请号：JP2006161245
申请日：2006-06-09
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： GONO MAKOTO , HORIUCHI TETSUYA , NISHIDE AKIHIKO , HAGIWARA AKIRA
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/488 , A61B6/542 , H05G1/30
摘要： PROBLEM TO BE SOLVED: To provide a tomographic image whose quality is similar to that of a tomographic image provided by scanning at an X-ray bulb current value set by an X-ray automatic exposure control even when the X-ray bulb current value set by the X-ray automatic exposure control is not in a reference interval of the X-ray bulb current value that can be set by the X-ray bulb 21. SOLUTION: The X-ray bulb current value out of the reference interval is changed to be in the reference interval and a set value of a helical pitch is changed so as to respond to a ratio of the X-ray bulb current value before changed and that after changed when the X-ray bulb current value set by the X-ray automatic exposure control is not in the reference interval of the X-ray bulb current value that can be set by the X-ray bulb 21 after the X-ray bulb current value to be supplied to the X-ray bulb 21 was set by the X-ray automatic exposure control. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供其质量类似于通过由X射线自动曝光控制设置的X射线灯泡电流值进行扫描而提供的断层图像的质量的断层图像，即使当X射线灯泡通过X射线自动曝光控制设定的电流值不在X射线灯泡21可以设定的X射线灯泡电流值的基准间隔内。解决方案：X射线灯泡电流值的参考间隔变化为参考间隔，并且改变螺距的设定值，以响应X射线灯泡电流之前的X射线灯泡电流值与改变之间的比率通过X射线自动曝光控制设定的值不能在将X射线灯泡电流值提供给X射线灯泡电流值之后由X射线灯泡21设定的X射线灯泡电流值的参考间隔内，射线灯泡21由X射线自动曝光控制设定。版权所有（C）2008，JPO＆INPIT

99. 发明专利

JP2007289297A X-ray ct apparatus 审中-公开
标题翻译： X射线CT装置
公开(公告)号：JP2007289297A
公开(公告)日：2007-11-08
申请号：JP2006118604
申请日：2006-04-23
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 , IISAKU SHINICHI , SEKIGUCHI JUNKO
IPC分类号： A61B6/03
CPC分类号： A61B6/481 , A61B6/027 , A61B6/032 , A61B6/469 , A61B6/488 , A61B6/542
摘要： PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus capable of achieving the improvement and security in the control of the timing for the shift to the main scanning in the synchronous photography with a contrast agent, and improvement in the reduction of exposure. SOLUTION: The X-ray CT apparatus 100 comprises: an X-ray source 21; an X-ray detector 24 disposed to face the X-ray source with a subject, into which the contrast agent is injected, in-between; a means of contrast agent synchronous photography for collecting projection data while accelerating the relative motion of the subject to the X-ray source and X-ray detector in a prescribed direction when the main scanning of the synchronous photography with the contrast agent is started; and an image reconstructing means for reconstructing the tomographic image based on the projection data. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在用造影剂的同步摄影中实现对主扫描转移的定时的改进和安全性的X射线CT装置，以及减少的改进的曝光。解决方案：X射线CT装置100包括：X射线源21; 设置成与受试者面对X射线源的X射线检测器24，其中注入造影剂; 当对比剂的同步摄影的主扫描开始时，用于收集投影数据同时加速对象与X射线源和X射线检测器在规定方向上的相对运动的手段; 以及用于基于投影数据重建断层图像的图像重建装置。版权所有（C）2008，JPO＆INPIT

100. 发明专利

JP2007236662A X-ray ct system, its x-ray ct image reconstitution method and x-ray ct image photographing method 审中-公开
标题翻译： X射线CT系统，X射线CT图像重建方法和X射线CT图像摄影方法
公开(公告)号：JP2007236662A
公开(公告)日：2007-09-20
申请号：JP2006063765
申请日：2006-03-09
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 , MORIKAWA KOTOKO
IPC分类号： A61B6/03
CPC分类号： A61B6/04 , A61B6/027 , A61B6/032 , A61B6/4085 , A61B6/467 , A61B6/469 , A61B6/507
摘要： PROBLEM TO BE SOLVED: To improve image quality by controlling the slice thickness of the tomographic images of the variable pitch helical scan or helical shuttle scan of an X-ray CT system having a two-dimensional X-ray area detector in a matrix structure represented by a multi-row X-ray detector or a flat panel X-ray detector. SOLUTION: In the image reconstitution of the variable pitch helical scan or the helical shuttle scan, the slice thickness is controlled by combining at least one or some of z filter superimposing processing, weighted addition processing of images in which a weighted coefficient is multiplied with the image-reconstituted tomographic images continued in a z direction and the image reconstitution of multiplying the weighted coefficient with the respective views of X-ray projection data. By the above, the slice thickness of the variable pitch helical scan is controlled to be the same slice thickness in the entire imaging range or in respective imaging ranges, or the tomographic images controlled to a desired slice thickness are realized. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过控制具有二维X射线区域检测器的X射线CT系统的可变螺距螺旋扫描或螺旋穿梭扫描的断层图像的切片厚度来提高图像质量由多行X射线检测器或平板X射线检测器表示的矩阵结构。解决方案：在可变螺距螺旋扫描或螺旋穿梭扫描的图像重构中，通过组合z滤波器叠加处理，图像的加权相加处理中的加权系数为与在az方向上继续的图像重构的断层图像相乘，并且将加权系数与X射线投影数据的各个视图相乘的图像重构。如上所述，可以在整个成像范围或各个成像范围内将可变间距螺旋扫描的切片厚度控制为相同的切片厚度，或者实现控制到期望切片厚度的断层图像。版权所有（C）2007，JPO＆INPIT

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