-
公开(公告)号：US20160307340A1
公开(公告)日：2016-10-20
申请号：US15092784
申请日：2016-04-07
IPC分类号： G06T11/00
CPC分类号： G06T11/008 , G06T2211/408
摘要： A multi-spectral CT imaging method, preferably a CT imaging method, is described. Spectrally resolved projection scan data is acquired from a region to be imaged of an examination object. The data is assigned to a plurality of pre-determined different partial spectra. Spectrally resolved image data is reconstructed with a plurality of attenuation values for each image point of the region to be imaged. The attenuation values are each assigned to one of the pre-determined different partial spectra. Furthermore, an extremal attenuation value is determined for each image point on the basis of the plurality of attenuation values. A representative image data set is determined such that the determined extremal attenuation value is assigned to each image point.
摘要翻译： 描述了多光谱CT成像方法，优选CT成像方法。 从检查对象的要成像的区域获取光谱分辨的投影扫描数据。 将数据分配给多个预定的不同部分光谱。 用要成像的区域的每个图像点的多个衰减值来重构光谱分辨的图像数据。 衰减值分别被分配给预定的不同部分光谱之一。 此外，基于多个衰减值，针对每个图像点确定极值衰减值。 确定代表性图像数据集，使得确定的极值衰减值被分配给每个图像点。
-
公开(公告)号：US08693636B2
公开(公告)日：2014-04-08
申请号：US13293379
申请日：2011-11-10
申请人： Ute Feuerlein , Sebastian Gehrsitz , Christiane Koch , Gerd Mayer , Stefan Muehleck , Rainer Raupach
发明人： Ute Feuerlein , Sebastian Gehrsitz , Christiane Koch , Gerd Mayer , Stefan Muehleck , Rainer Raupach
IPC分类号： H05G1/32
摘要： In a method and x-ray device to determine the value of an x-ray tube voltage to generate at least one image of defined tissue to be examined, at least one provided parameter is used that establishes or describes the desired image quality; based on the dependency of the contrast of the defined tissue to be examined on the spectrum of the x-ray radiation or on the value of the tube voltage of the x-ray tube. The tube voltage is determined also based on a contrast-to-noise ratio that is constantly maintained under consideration of the aforementioned parameter such that the dose of x-ray radiation applied to the patient is optimally low upon setting the value of the tube voltage at the x-ray tube and the acquisition of at least one x-ray projection of the defined tissue.
摘要翻译： 在用于确定x射线管电压的值以产生待检查的限定组织的至少一个图像的方法和x射线装置中，使用至少一个提供的参数来建立或描述所需的图像质量; 基于要检查的所确定组织的对比度对X射线辐射的光谱或X射线管的管电压的值的依赖性。 管电压还基于在考虑上述参数下不断保持的对比噪声比来确定，使得施加到患者的x射线辐射的剂量在将管电压的值设置在 X射线管和获取所定义组织的至少一个X射线投影。
-
公开(公告)号：US08687763B2
公开(公告)日：2014-04-01
申请号：US13293366
申请日：2011-11-10
IPC分类号： H05G1/30
摘要： The value of a tube voltage of an x-ray tube, used to acquire x-ray projections of a patient in order to generate at least one image in each phase of a multiphase examination, is determined from a contrast-to-noise ratio that establishes the desired image quality of the image in each phase, and the tube current for each tube voltage for each phase is determined given a constantly maintained contrast-to-noise ratio for different tube voltages. For each phase, a value for the dose of x-ray radiation is defined for each different tube voltage and the associated determined tube current. From among the different tube voltages, a tube voltage is set that causes the total dose of x-ray radiation applied to the patient to be as low as possible for all phases of the examination.
摘要翻译： 用于获取患者的x射线投影以便在多相检查的每个阶段中产生至少一个图像的X射线管的管电压的值由对比度 - 在各相中建立图像的期望图像质量，并且针对不同的管电压确定针对每个相的每个管电压的管电流，给定恒定的对比噪声比。 对于每个相，针对每个不同的管电压和相关的确定的管电流来定义X射线辐射剂量的值。 从不同的管电压中，设置管电压，其使得施加到患者的X射线辐射的总剂量尽可能低于检查的所有阶段。
-
公开(公告)号：US08553962B2
公开(公告)日：2013-10-08
申请号：US13164796
申请日：2011-06-21
申请人： Thomas Allmendinger , Herbert Bruder , Thomas Flohr , Rainer Raupach , Harald Schöndube , Karl Stierstorfer
发明人： Thomas Allmendinger , Herbert Bruder , Thomas Flohr , Rainer Raupach , Harald Schöndube , Karl Stierstorfer
CPC分类号： A61B6/032 , A61B6/4441 , A61B6/481 , A61B6/486 , A61B6/503 , A61B6/507 , A61B6/5211 , A61B6/5264 , A61B6/5288 , A61B2090/3762 , G06T5/002 , G06T5/50 , G06T11/006 , G06T2207/10081 , G06T2207/20221 , G06T2207/30048 , G06T2211/412 , G06T2211/436
摘要： A method is disclosed for the reconstruction of picture data of a moving object under examination from measurement, with the measurement data having been recorded beforehand for a relative rotational movement between a radiation source of a computed tomography system and the object under examination. In at least one embodiment, first picture data is computed from a complete measurement dataset of the measurement data for a picture reconstruction, and second picture data is computed from an incomplete measurement dataset for a computed tomography picture reconstruction. The first picture data and the second picture data are combined into third picture data, with the combination being computed using location-dependent movement information of the object under examination.
摘要翻译： 公开了一种用于重建从测量中检查的移动物体的图像数据的方法，其中测量数据已被预先记录在计算机断层摄影系统的辐射源和被检查物体之间的相对旋转运动。 在至少一个实施例中，从用于图像重建的测量数据的完整测量数据集计算第一图像数据，并且从用于计算机断层摄影图像重建的不完整测量数据集计算第二图像数据。 将第一图像数据和第二图像数据组合成第三图像数据，使用正在检查的对象的位置相关运动信息来计算组合。
-
95.发明授权Motion control method and motion control module, image processing actuation method and image processing actuation module 有权运动控制方法和运动控制模块，图像处理驱动方法和图像处理驱动模块公开(公告)号：US08422625B2
公开(公告)日：2013-04-16
申请号：US12585575
申请日：2009-09-18
申请人： Herbert Bruder , Rainer Raupach
发明人： Herbert Bruder , Rainer Raupach
IPC分类号： A61B6/03
摘要： A motion control method is disclosed for controlling a relative scan feed motion of an object bearing device toward a scanner unit of a computed tomography system. Here, scan motion control signals are generated parallel to the scan feed motion for controlling the scan feed motion, which scan motion control signals are derived from variable input data obtained in parallel during a scan procedure. In at least one embodiment, the variable input data includes motion signals which represent the object motion cycle determined with the aid of an electrocardiogram, and the speed of the scan feed motion is reduced if an extrasystole is detected. Furthermore, at least one embodiment of the invention relates to a motion control module suited to this and/or an image processing actuation method and/or an image processing actuation module for actuating an image processing system.
摘要翻译： 公开了一种用于控制物体承载装置朝向计算机断层摄影系统的扫描器单元的相对扫描进给运动的运动控制方法。 这里，与用于控制扫描进给运动的扫描进给运动平行生成扫描运动控制信号，扫描运动控制信号从扫描过程中并行获得的可变输入数据导出。 在至少一个实施例中，可变输入数据包括表示借助于心电图确定的对象运动周期的运动信号，并且如果检测到收缩周期，则减少扫描进给运动的速度。 此外，本发明的至少一个实施例涉及一种适用于此和/或图像处理致动方法的运动控制模块和/或用于致动图像处理系统的图像处理致动模块。
-
96.发明授权Method for creating computed tomography recordings of a patient with metallic components 有权用于创建具有金属部件的患者的计算机断层摄影记录的方法公开(公告)号：US08379953B2
公开(公告)日：2013-02-19
申请号：US12585023
申请日：2009-09-01
申请人： Herbert Bruder , Rainer Raupach
发明人： Herbert Bruder , Rainer Raupach
CPC分类号： A61B6/4014 , A61B6/032 , A61B6/4241 , A61B6/4441 , A61B6/466 , A61B6/482 , A61B6/5258 , A61B6/541 , G06T11/005
摘要： A method is disclosed for creating computed tomography recordings of a patient with metallic components. In at least one embodiment, the method includes scanning the patient by use of an x-ray tube detector system, with at least one sinogram being compiled; determining the detector signal data, which was attenuated by the metallic components in the patient; deleting the detector signal data, which was influenced by metallic components; determining the beam tracks in the sinogram at least of the volume elements, which are struck by beams which are attenuated by the metallic components and which cross the beam track of the deleted detector signal data in the sonogram; determining a minimal measurement value on each beam track respectively; adding together the minimal measurement values of the beam tracks to obtain the measurement points of the deleted detector signal data crossed by these beam tracks in the sonogram; and using this at least one sinogram determined in this manner to reconstruct computed tomography recordings of the patient without a metallic component, and displaying the reconstructed computed tomography recordings of the patient with metallic components.
摘要翻译： 公开了一种用于创建具有金属部件的患者的计算机断层摄影记录的方法。 在至少一个实施例中，该方法包括使用X射线管检测器系统对患者进行扫描，其中至少一个正弦图被编译; 确定由患者中的金属部件衰减的检测器信号数据; 删除受金属部件影响的检测器信号数据; 确定正弦图中的至少一个体积元素的光束轨迹，这些光束被由金属部件衰减并且与超声波图中被删除的检测器信号数据的光束轨迹交叉的光束撞击; 分别确定每个光束轨道上的最小测量值; 将波束轨迹的最小测量值相加在一起，以获得在超声波图中被这些波束轨迹交叉的被删除检测器信号数据的测量点; 并且使用这种以这种方式确定的至少一个正弦图来重建没有金属部件的患者的计算机断层摄影记录，并且用金属部件显示患者的重建计算机断层摄影记录。
-
97.发明授权Method for generating computed tomography image data records of a patient in the heart CT scan during a perfusion control by applying contrast agent 有权用于在灌注控制期间通过应用造影剂在心脏CT扫描中产生患者的计算机断层摄影图像数据记录的方法公开(公告)号：US08306295B2
公开(公告)日：2012-11-06
申请号：US12585580
申请日：2009-09-18
申请人： Herbert Bruder , Rainer Raupach
发明人： Herbert Bruder , Rainer Raupach
CPC分类号： A61B6/504 , A61B6/481 , A61B6/507 , G06F19/00 , G06T11/005
摘要： A method is disclosed for generating computed tomography image data records of a patient in a heart CT scan during a perfusion control by applying contrast agent. In at least one embodiment, a plurality of temporally consecutive CT data records are recorded as an exposure series with a CT system and if necessary are reconstructed. These CT data records are improved for better visualization of the perfusion by way of electronic filtering and post-processing, with all projection and/or image data determined during a CT scan being used, however with the aid of frequency filtering only the data of a projection or of a reconstructed image for generating a final representation being used which does not fall within a predetermined local frequency range of a heart movement.
摘要翻译： 公开了一种用于在灌注控制期间通过应用造影剂在心脏CT扫描中产生患者的计算机断层摄影图像数据记录的方法。 在至少一个实施例中，多个时间上连续的CT数据记录被记录为具有CT系统的曝光序列，并且如果需要重建。 改进这些CT数据记录，以通过电子滤波和后处理的方式更好地可视化灌注，所有投影和/或图像数据在CT扫描期间确定，然而借助频率滤波仅对 投影或重建图像，用于生成不在心脏运动的预定局部频率范围内的正在使用的最终表示。
-
公开(公告)号：US20120201344A1
公开(公告)日：2012-08-09
申请号：US13360964
申请日：2012-01-30
申请人： Ute Feuerlein , Ernst Klotz , Rainer Raupach , Bernhard Schmidt
发明人： Ute Feuerlein , Ernst Klotz , Rainer Raupach , Bernhard Schmidt
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/405 , A61B6/481 , A61B6/5258 , A61B6/545 , A61B6/583 , G06T5/009 , H05G1/32
摘要： In a method and x-ray device to adapt the width and the position of a central value of a greyscale windowing for imaging with the x-ray device based on CT values determined with said x-ray device, the adaptation takes place within the scope of a determination and adjustment of an acquisition tube voltage of an x-ray tube of the x-ray device for an examination of a defined tissue of a patient, assuming a reference tube voltage for the examination of the defined tissue of the patient, and in which a width and position of a central value of the greyscale windowing that are associated with the reference tube voltage are automatically adapted to the acquisition tube voltage.
摘要翻译： 在一种方法和x射线装置中，根据由所述X射线装置确定的CT值，使用X射线装置进行成像的灰度窗口的中心值的宽度和位置，以适应范围 确定和调整x射线装置的X射线管的采集管电压，用于检查患者的确定的组织，假设用于检查患者的确定的组织的参考管电压，以及 其中与参考管电压相关联的灰度窗口的中心值的宽度和位置自动适应于采集管电压。
-
公开(公告)号：US08218721B2
公开(公告)日：2012-07-10
申请号：US12570197
申请日：2009-09-30
申请人： Rainer Raupach , Bernhard Schmidt
发明人： Rainer Raupach , Bernhard Schmidt
CPC分类号： G21K1/10 , A61B6/032 , A61B6/06 , A61B6/4035 , G21K1/02
摘要： A diaphragm and diaphragm device for the specific manipulation of x-ray radiation that emanates from an x-ray focus of a CT apparatus and serves for scanning an examination subject, wherein the x-ray focus and the diaphragm arranged relatively near to the focus can be rotated together around a system axis (z-axis), and the diaphragm has movable diaphragm elements that dynamically adjust a diaphragm aperture (and therefore the spatial divergence of the x-rays passing through the diaphragm aperture). The diaphragm elements have a transmission factor for x-ray radiation that is different than zero. With such a diaphragm or diaphragm device the acquisition of the projection data necessary for the reconstruction of an artifact-free image of a region of interest (ROI) is possible with lower radiation exposure of the examination subject.
摘要翻译： 一种隔膜和隔膜装置，用于对CT装置的x射线焦点产生的x射线辐射的特定操作，用于扫描检查对象，其中x射线焦点和相对靠近焦点布置的光阑可以 围绕系统轴线（z轴）旋转在一起，并且隔膜具有可动的膜片元件，其可动态地调节光阑孔径（因此通过光阑孔径的x射线的空间发散）。 隔膜元件具有不同于零的x射线辐射的透射系数。 使用这种隔膜或隔膜装置，可以在检查对象的较低的辐射照射下获取重建感兴趣区域（ROI）的无伪像图像所需的投影数据。
-
公开(公告)号：US20120140893A1
公开(公告)日：2012-06-07
申请号：US13293366
申请日：2011-11-10
IPC分类号： H05G1/32
摘要： The value of a tube voltage of an x-ray tube, used to acquire x-ray projections of a patient in order to generate at least one image in each phase of a multiphase examination, is determined from a contrast-to-noise ratio that establishes the desired image quality of the image in each phase, and the tube current for each tube voltage for each phase is determined given a constantly maintained contrast-to-noise ratio for different tube voltages. For each phase, a value for the dose of x-ray radiation is defined for each different tube voltage and the associated determined tube current. From among the different tube voltages, a tube voltage is set that causes the total dose of x-ray radiation applied to the patient to be as low as possible for all phases of the examination.
摘要翻译： 用于获取患者的x射线投影以便在多相检查的每个阶段中产生至少一个图像的X射线管的管电压的值由对比度 - 在各相中建立图像的期望图像质量，并且针对不同的管电压确定针对每个相的每个管电压的管电流，给定恒定的对比噪声比。 对于每个相，针对每个不同的管电压和相关的确定的管电流来定义X射线辐射剂量的值。 从不同的管电压中，设置管电压，其使得施加到患者的X射线辐射的总剂量尽可能低于检查的所有阶段。
-
-
-
-
-
-
-
-
-
搜索结果
114 条记录 (耗时 0.026 秒)
