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51. 发明授权

US08848860B2 X-ray CT apparatus 有权
标题翻译： X射线CT装置
公开(公告)号：US08848860B2
公开(公告)日：2014-09-30
申请号：US13331646
申请日：2011-12-20
申请人： Yujiro Yazaki
发明人： Yujiro Yazaki
IPC分类号： A61B6/03 , A61B6/00 , H05G1/34
CPC分类号： H05G1/34 , A61B6/032 , A61B6/405 , A61B6/469 , A61B6/488 , A61B6/542
摘要： An X-ray CT apparatus is provided. The X-ray CT apparatus includes an X-ray tube configured to apply an X-ray onto a subject, a scan device configured to rotate the X-ray tube about the subject to perform an X-ray CT scan, a first control device configured to switch an X-ray output of the X-ray tube from a first level to a second level smaller than the first level when the X-ray tube is placed at a first view angle, and configured to switch the X-ray output from the second level to the first level when the X-ray tube is placed at a second view angle, and a second control device configured to set the first view angle and the second view angle such that an X-ray exposure dose reduced by setting the X-ray output of the X-ray tube smaller than the first level becomes even on right and left sides.
摘要翻译：提供X射线CT装置。 X射线CT装置包括被配置为将X射线施加到被检体上的X射线管，被配置为使X射线管围绕被摄体旋转以进行X射线CT扫描的扫描装置，第一控制装置被配置为当X射线管被放置在第一视角时将X射线管的X射线输出从第一水平切换到小于第一水平的第二水平，并且被配置为将X射线输出当X射线管被放置在第二视角时从第二级到第一级;以及第二控制装置，被配置为设置第一视角和第二视角，使得通过设置减小X射线曝光剂量小于第一水平的X射线管的X射线输出在右侧和左侧变得均匀。

52. 发明申请

US20140254751A1 RADIOGRAPHIC EXAMINATION APPARATUS AND METHOD FOR THE SAME 有权
标题翻译：放射性检查装置及其相关方法
公开(公告)号：US20140254751A1
公开(公告)日：2014-09-11
申请号：US13788942
申请日：2013-03-07
申请人： KATSUHIRO YABUGAMI
发明人： KATSUHIRO YABUGAMI
IPC分类号： H05G1/10 , A61B6/00
CPC分类号： A61B6/485 , A61B6/405 , A61B6/487 , A61B6/542 , H05G1/22 , H05G1/34
摘要： A radiographic examination apparatus improves response to fluoroscopy or continuous shooting by changing promptly the power-output of an X-ray tube. The apparatus and method, when an absolute value of variation C per fixed time interval between the filament electric current of current pulse-output calculated by the filament electric current variation calculation element is more than a setup value, a flash control between pulse conducts increases or decreases temporarily the filament electric current between pulses to become the filament electric current on flash control between pulses calculated by a filament electric current calculation element based on a radiation condition of a current pulse-output and the radiation condition of following pulse-output.
摘要翻译：放射线检查装置通过迅速地改变X射线管的功率输出来改善对透视或连续拍摄的反应。该装置和方法，当由灯丝电流变化计算元件计算出的当前脉冲输出的灯丝电流之间的固定时间间隔的变化量C的绝对值大于设定值时，脉冲导通之间的闪光控制增加或基于电流脉冲输出的辐射条件和跟随脉冲输出的放射状态，暂时减少脉冲之间的灯丝电流，成为由灯丝电流计算元件计算的脉冲之间的闪光控制上的灯丝电流。

53. 发明授权

US08798228B2 Method to reduce radiation dose delivered by imaging system 有权
标题翻译：降低成像系统辐射剂量的方法
公开(公告)号：US08798228B2
公开(公告)日：2014-08-05
申请号：US13409912
申请日：2012-03-01
申请人： Arun Kumar Chandrashekarappa , Pankaj Giri , Gobinath Mani , Yasuhiro Imai , Haruna Onodera
发明人： Arun Kumar Chandrashekarappa , Pankaj Giri , Gobinath Mani , Yasuhiro Imai , Haruna Onodera
IPC分类号： A61B6/03
CPC分类号： A61B6/542 , A61B6/032 , A61B6/405 , A61B6/469 , A61B6/488
摘要： In one embodiment, a method to reduce the radiation dose delivered by an imaging system is provided. The method comprises steps of selecting a virtual mask representation based on the shape of an organ to be masked, displaying the virtual mask representation on a scout image and manipulating radiation dose to be delivered so as to modify the virtual mask representation to obtain an optimum attenuation profile.
摘要翻译：在一个实施例中，提供了一种降低由成像系统传递的辐射剂量的方法。该方法包括以下步骤：基于待屏蔽的器官的形状选择虚拟掩模表示，在侦察图像上显示虚拟掩码表示并操纵要传送的辐射剂量，以便修改虚拟掩码表示以获得最佳衰减个人资料

54. 发明授权

US08755488B2 Voltage modulated x-ray tube 有权
标题翻译：电压调制x射线管
公开(公告)号：US08755488B2
公开(公告)日：2014-06-17
申请号：US13054814
申请日：2009-07-22
申请人： Simha Levene , Amiaz Altman
发明人： Simha Levene , Amiaz Altman
IPC分类号： G01N23/04 , H05G1/32
CPC分类号： H05G1/08 , A61B6/032 , A61B6/405 , A61B6/4241 , A61B6/482 , H05G1/32
摘要： A system comprises a radiation source (110), including a anode (112) and a cathode (114), a high voltage generator (202) that generates a source voltage that is applied across the anode (112) and cathode (114), wherein the source voltage accelerates electrons from the cathode (114) towards the anode (112), and a modulation wave generator (204) that generates a modulation voltage wave having a non-zero amplitude, which is combined with and modulates the source voltage between at least two different voltages.
摘要翻译：一种系统包括辐射源（110），包括阳极（112）和阴极（114），产生施加在阳极（112）和阴极（114）上的源极电压的高压发生器（202）其中所述源极电压将来自所述阴极（114）的电子加速到所述阳极（112）;以及调制波发生器（204），其产生具有非零幅度的调制电压波，所述调制波发生器与所述调制波发生器结合并调制至少两个不同的电压。

55. 发明申请

US20140153696A1 GENERATION OF MULTIPLE X-RAY ENERGIES 审中-公开
标题翻译：多次X射线能量的产生
公开(公告)号：US20140153696A1
公开(公告)日：2014-06-05
申请号：US14236080
申请日：2012-07-24
申请人： Rolf Karl Otto Behling , Wolfram Maring
发明人： Rolf Karl Otto Behling , Wolfram Maring
IPC分类号： H01J35/14
CPC分类号： H01J35/14 , A61B6/405 , G21K1/043 , H01J35/02
摘要： The present invention relates to the generation of multiple X-ray energies in an X-ray tube. In order to provide an X-ray tube capable of generating multiple-energy X-ray radiation with a minimized design setup and an improved switching capacity, a multiple-energy X-ray tube (10) comprises a cathode (12), an anode (14) and an electron-braking device (16). The anode comprises a target surface (18) provided for generating X-rays as a result of impinging electrons. The cathode is provided for emitting electrons (20, 144, 148, 150) towards the anode to impinge on the target surface of the anode. The electron-braking device is intermittently arrangeable in a pathway (22, 144, 148, 150) of the electrons from the cathode to the anode and configured to slow at least a part of the electrons of the electron beam such that the energy of re-emitted electrons is lower than the energy of arriving electrons.
摘要翻译：本发明涉及在X射线管中产生多个X射线能量。为了提供能够以最小化的设计设计和改进的开关容量产生多能量X射线辐射的X射线管，多能X射线管（10）包括阴极（12），阳极（14）和电子制动装置（16）。阳极包括由于撞击电子而产生X射线的目标表面（18）。提供阴极以朝向阳极发射电子（20,144,148,150）以撞击阳极的目标表面。电子制动装置间歇地布置在从阴极到阳极的电子的通路（22,144,148,150）中，并且构造成减缓电子束的至少一部分电子，使得再次的能量发射电子低于到达电子的能量。

56. 发明申请

US20140119506A1 APPARATUS AND METHOD FOR ACQUIRING OPTIMAL MULTI-ENERGY X-RAY IMAGE 有权
标题翻译：用于获取最佳多能量X射线图像的装置和方法
公开(公告)号：US20140119506A1
公开(公告)日：2014-05-01
申请号：US13845742
申请日：2013-03-18
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Dong Goo KANG , Sung Hoon KANG , Sung Su KIM , Young Hun SUNG , Hyun Hwa OH , Seok Min HAN
IPC分类号： G01N23/04
CPC分类号： A61B6/502 , A61B6/0414 , A61B6/405 , A61B6/481 , A61B6/482 , A61B6/486 , A61B6/5258 , A61B6/544 , A61B6/545 , A61B6/583
摘要： An apparatus and method for acquiring an optimal MEX image may include an X-ray source to generate an X-ray and to irradiate the X-ray, an energy identification detector to acquire a MEX image that is generated when the irradiated X-ray penetrates an object, and an optimal MEX processor to generate an optimal MEX parameter based on a characteristic of the object and to control at least one of the X-ray source and the energy identification detector based on the generated optimal MEX parameter.
摘要翻译：用于获取最佳MEX图像的装置和方法可以包括产生X射线并照射X射线的X射线源，能量识别检测器以获取当照射的X射线穿透时产生的MEX图像物体和最佳MEX处理器，以基于物体的特性生成最佳MEX参数，并且基于所生成的最佳MEX参数来控制X射线源和能量识别检测器中的至少一个。

57. 发明授权

US08705688B2 Medical image processing apparatus, X-ray computed tomography apparatus, and medical image processing method 有权
标题翻译：医用图像处理装置，X射线计算机断层摄影装置以及医学图像处理方法
公开(公告)号：US08705688B2
公开(公告)日：2014-04-22
申请号：US13329754
申请日：2011-12-19
申请人： Naruomi Akino
发明人： Naruomi Akino
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/405 , A61B6/482 , A61B6/5205 , A61B6/5217
摘要： According to one embodiment, a medical image processing apparatus includes an image storage unit, an estimation unit, a combination ratio determination unit, and a combined image generation unit. The estimation unit is configured to estimate an abundance ratio of one of a first and second substances to the other for each pixel based on attenuation coefficients of the first substance which correspond to a first and second energies, the attenuation coefficients of a second substance which correspond to the first and second energies, and pixel values of a first and second medical images. The combination ratio determination unit is configured to determine combination ratios of pixel values between the first and second medical images for each pixel based on the abundance ratios of the first and second substances and the attenuation coefficients of the first and second substances which are associated with a target energy.
摘要翻译：根据一个实施例，医学图像处理设备包括图像存储单元，估计单元，组合比率确定单元和组合图像生成单元。估计单元被配置为基于对应于第一和第二能量的第一物质的衰减系数来估计每个像素的第一和第二物质中的一个物质与另一物质之间的丰度比，对应于第一物质的衰减系数第一和第二能量以及第一和第二医学图像的像素值。组合比确定单元被配置为基于第一和第二物质的丰度比和与第一和第二物质的相关联的第一和第二物质的衰减系数来确定每个像素的第一和第二医学图像之间的像素值的组合比率目标能量。

58. 发明授权

US08699658B2 System and method for automatic tube potential selection for dose reduction in medical imaging 有权
标题翻译：用于医学成像剂量减少的自动管电位选择的系统和方法
公开(公告)号：US08699658B2
公开(公告)日：2014-04-15
申请号：US13384454
申请日：2010-07-15
申请人： Lifeng Yu , Cynthia H McCollough , Joel G Fletcher , Hua Li
发明人： Lifeng Yu , Cynthia H McCollough , Joel G Fletcher , Hua Li
IPC分类号： A61B6/03
CPC分类号： A61B6/03 , A61B6/032 , A61B6/405 , A61B6/481 , A61B6/504 , A61B6/542 , A61B6/544 , A61B6/545
摘要： A method for CT imaging that utilizes an automatic tube potential selection for individual subjects and diagnostic tasks. The method quantifies the relative radiation dose of different tube potentials for achieving a specific image quality. This allows the selection of a tube potential that provides a reduced radiation dose while still providing CT images of a sufficient quality.
摘要翻译：一种用于CT成像的方法，其利用针对个体对象和诊断任务的自动管电位选择。该方法量化不同管电位的相对辐射剂量以实现特定的图像质量。这允许选择提供减小的辐射剂量的管电位，同时仍然提供足够质量的CT图像。

59. 发明申请

US20140056497A1 SYSTEM AND METHOD FOR CORRECTING FOR METAL ARTIFACTS USING MULTI-ENERGY COMPUTED TOMOGRAPHY 有权
标题翻译：使用多功能计算机图像校正金属制品的系统和方法
公开(公告)号：US20140056497A1
公开(公告)日：2014-02-27
申请号：US13593348
申请日：2012-08-23
申请人： Jiang Hsieh , Brian Edward Nett , Paavana Sainath , Debashish Pal
发明人： Jiang Hsieh , Brian Edward Nett , Paavana Sainath , Debashish Pal
IPC分类号： G06K9/00
CPC分类号： G06T5/005 , A61B6/032 , A61B6/405 , A61B6/482 , A61B6/488 , A61B6/5205 , A61B6/5258 , G06T7/0012 , G06T11/005 , G06T2211/408
摘要： A method is provided. The method includes acquiring a first dataset at a first energy spectrum and a second dataset at a second energy spectrum. The method also includes extracting a metal artifact correction signal using the first dataset and the second dataset or using a first reconstructed image and a second reconstructed image generated respectively from the first and the second datasets. The method further includes performing metal artifact correction on the first reconstructed image using the metal artifact correction signal to generate a first corrected image.
摘要翻译：提供了一种方法。该方法包括以第二能量谱获取第一能量谱的第一数据集和第二数据集。该方法还包括使用第一数据集和第二数据集提取金属伪像校正信号，或者使用分别从第一和第二数据集生成的第一重建图像和第二重建图像。该方法还包括使用金属伪像校正信号在第一重构图像上执行金属伪像校正，以产生第一校正图像。

60. 发明授权

US08515147B2 Spectrally resolving X-ray imaging device 失效
标题翻译：光谱分辨X射线成像装置
公开(公告)号：US08515147B2
公开(公告)日：2013-08-20
申请号：US12518480
申请日：2007-12-11
申请人： Christian Baeumer , Roger Steadman Booker , Gereon Vogtmeier , Thomas Scheel , Christoph Loef
发明人： Christian Baeumer , Roger Steadman Booker , Gereon Vogtmeier , Thomas Scheel , Christoph Loef
IPC分类号： G06K9/00
CPC分类号： A61B6/405 , A61B6/032
摘要： The invention relates to an X-ray imaging device, particularly a Spectral-CT scanner, that comprises an X-ray source for generating X-radiation with an energy spectrum which varies continuously during an observation period. In a preferred embodiment, the radiation is attenuated in an object according to an energy-dependent attenuation coefficient μ, the transmitted radiation is measured by sensor units of a detector, and the resulting measurement signal is sampled and A/D converted. This is preferably done by an oversampling A/D converter, for example a ΣΔ-ADC. The tube voltage that drives the X-ray source is sampled with high frequency. In an evaluation system, these sampled measurement values can be associated with corresponding effective energy spectra to determine the energy dependent attenuation coefficient μ.
摘要翻译：本发明涉及一种X射线成像装置，特别是一种光谱CT扫描仪，其包括用于产生X射线的X射线源，其能量谱在观察期间连续变化。在优选实施例中，辐射根据能量依赖衰减系数μ在物体中衰减，透射辐射由检测器的传感器单元测量，并且所得到的测量信号被采样并进行A / D转换。这最好由过采样A / D转换器，例如SigmaDelta-ADC完成。驱动X射线源的管电压以高频率进行采样。在评估系统中，这些采样的测量值可以与相应的有效能量谱相关联，以确定能量依赖衰减系数μ。

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