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

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/503 ,  A61B6/541

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。

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

IPC分类号： G06K9/00 ,  A61B6/00

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。

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

IPC分类号： G06K9/00 ,  A61B6/00

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：US08189734B2

公开(公告)日：2012-05-29

申请号：US12686413

申请日：2010-01-13

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

IPC分类号： A61B6/00

CPC分类号： G06T11/006 ,  A61B6/027 ,  A61B6/507 ,  G06T2211/412 ,  G06T2211/421

摘要： A method is disclosed for scanning an examination object with a CT system and the generation of at least one computed tomographic sectional view from data obtained from the scanning and a CT system. In at least one embodiment, data used for generating the at least one sectional image is filtered out with different intensities as a function of a predetermined time range and/or projection angle range of the measurement of high local frequencies.

摘要翻译： 公开了一种用于使用CT系统扫描检查对象并从从扫描和CT系统获得的数据生成至少一个计算机断层图截面视图的方法。 在至少一个实施例中，用于产生至少一个截面图像的数据作为预定时间范围和/或高本地频率的测量的投影角范围的函数以不同的强度被滤除。

公开(公告)号：US20110188723A1

公开(公告)日：2011-08-04

申请号：US13018724

申请日：2011-02-01

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Karl Stierstorfer

IPC分类号： G06K9/00

CPC分类号： A61B6/4014 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/482 ,  A61B6/507 ,  G01N23/046 ,  G01N2223/401 ,  G01N2223/419 ,  G01N2223/612 ,  G06T11/006 ,  G06T2211/432

摘要： A method is disclosed for reconstructing image data of an examination subject from measured data, wherein the measured data was acquired in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination subject. A limited area between the radiation source and a detector represents a field of view in respect of which measured data can be acquired, and parts of the examination subject were located at least temporarily outside the field of view in the course of the measured data acquisition. In at least one embodiment, first image data is reconstructed from the measured data, and a boundary of the examination subject is determined with the aid of the first image data. The first image data is subsequently modified using the determined boundary, and projection data is calculated from the modified first image data. The measured data is modified using the projection data, and finally second image data is reconstructed from the modified measured data.

摘要翻译： 公开了一种用于从测量数据重建检查对象的图像数据的方法，其中在计算机断层摄影系统的辐射源与检查对象之间的相对旋转运动的过程中获取测量数据。 辐射源和检测器之间的有限区域表示可以获取测量数据的视野，并且在测量数据采集的过程中检查对象的部分至少临时定位在视场外。 在至少一个实施例中，从测量数据重建第一图像数据，借助于第一图像数据确定检查对象的边界。 随后使用所确定的边界修改第一图像数据，并且从修改的第一图像数据计算投影数据。 使用投影数据修改测量数据，最后从修改的测量数据重建第二图像数据。

公开(公告)号：US07970097B2

公开(公告)日：2011-06-28

申请号：US12458806

申请日：2009-07-23

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

IPC分类号： A61B6/00

CPC分类号： A61B5/0456 ,  A61B6/027 ,  A61B6/032 ,  A61B6/503 ,  A61B6/504 ,  A61B6/541

摘要： A method is disclosed for producing tomographic images relating to different movement phases of a periodically moving object with the use of a tomography unit that includes a recording system that is arranged rotatably about a z-axis of the tomography unit, the recording system including an X-ray tube to which a tube current can be applied and a detector (17, 18) for acquiring projections. In at least one embodiment, the recording system is initially positioned relative to the object at a first z-position, and projections are acquired from a multiplicity of different projection dimensions at this z-position, in a fashion triggered by a movement signal representing the movement of the object, projections relating to a first movement phase of the object being acquired in a prospectively defined first time window and projections relating to at least a second movement phase of the object being acquired in a prospectively defined second time window. In at least one embodiment, a modulation of the tube current is performed in such a way that different tube current values are set in the first and the second time window to attain a prescribable different signal-to-noise ratio in the produced images. The recording system is then positioned sequentially at further z-positions, and respectively corresponding projections are acquired there for the two movement phases until a prescribed examination area is scanned at the desired z-positions. Tomographic images are reconstructed in real time or subsequently on the basis of the obtained projections.

摘要翻译： 公开了一种利用断层摄影单元生成与周期性运动物体的不同移动相位相关的断层图像的方法，所述断层摄影单元包括绕所述断层摄影单元的z轴可旋转地设置的记录系统，所述记录系统包括X 可以施加管电流的射线管和用于获取突起的检测器（17,18）。 在至少一个实施例中，记录系统首先在第一z位置处相对于物体定位，并且以该Z位置上的多个不同的投影尺寸获取投影，其方式是由表示 物体的移动，与在前瞻性定义的第一时间窗口中获取的物体的第一移动阶段有关的投影以及与在前瞻性定义的第二时间窗口中获取的物体的至少第二移动阶段有关的投影。 在至少一个实施例中，以这样的方式执行管电流的调制，使得在第一和第二时间窗中设置不同的管电流值，以在所产生的图像中获得规定的不同的信噪比。 然后将记录系统顺序地定位在更进一步的z位置，并且分别在两个移动阶段获取对应的投影，直到在期望的z位置扫描规定的检查区域。 断层扫描图像可以实时重建，或随后根据获得的投影进行重构。

公开(公告)号：US20110033097A1

公开(公告)日：2011-02-10

申请号：US12849082

申请日：2010-08-03

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Karl Stierstorfer

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B5/0456 ,  A61B6/4014 ,  A61B6/482 ,  A61B6/503 ,  A61B6/507 ,  G06T11/006 ,  G06T2211/412 ,  G06T2211/424 ,  G06T2211/436

摘要： A method is disclosed for reconstructing image data of a moving examination object from measurement data, wherein the measurement data was captured in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination object. In at least one embodiment of the method, a first image of the examination object is calculated from a complete measurement data record of the measurement data for an image reconstruction and a second image of the examination object is calculated from an incomplete measurement data record of the measurement data for an image reconstruction. Frequency splitting of the first and second images takes place respectively in at least one low-frequency and one higher-frequency component and the image data of the second image is supplemented in the low-frequency component with image data of the low-frequency component of the first image. In a further processing step the second image thus supplemented is improved using the first image, in that errors due to the incompleteness of the measurement data record of the second image are reduced.

摘要翻译： 公开了一种用于从测量数据重建运动检查对象的图像数据的方法，其中在计算机断层摄影系统的辐射源和检查对象之间的相对旋转运动的过程中捕获测量数据。 在该方法的至少一个实施例中，根据用于图像重构的测量数据的完整测量数据记录来计算检查对象的第一图像，并且从不完整的测量数据记录计算检查对象的第二图像 用于图像重建的测量数据。 第一和第二图像的频率分割分别发生在至少一个低频和一个较高频分量中，并且第二图像的图像数据在低频分量中被补充，低频分量的图像数据是 第一张图片。 在另外的处理步骤中，使用第一图像来改善如此补充的第二图像，因为减少了由于第二图像的测量数据记录的不完备性造成的错误。

公开(公告)号：US07856077B2

公开(公告)日：2010-12-21

申请号：US12292462

申请日：2008-11-19

申请人： Herbert Bruder ,  Thomas Flohr

发明人： Herbert Bruder ,  Thomas Flohr

IPC分类号： G01N23/00

CPC分类号： A61B6/504 ,  A61B5/11 ,  A61B6/027 ,  A61B6/032 ,  A61B6/5264 ,  A61B6/527 ,  A61B6/541

摘要： At least one embodiment of the present invention relates to a CT scanner and/or a method for helical scanning of an examination object which has at least one portion undergoing periodic motion. In at least one embodiment, the CT scanner includes at least one bearing apparatus, arranged along a system axis of the CT scanner, for bearing the examination object, two scanning systems which can rotate around the system axis and which are arranged coaxially, respectively having a focus from which a beam can be emitted and a flat-design detector array, arranged opposite the respective focus, including a multiplicity of distributed detector elements which can detect the rays of the beam, wherein projection data can be generated by the scanning systems which represents the attenuation of the rays while traversing the examination object, and wherein the bearing apparatus and/or the scanning systems can be displaced along the system axis, a first device/module, preferably an EKG, which can detect and store rest and movement phases of the examination object which has at least one portion undergoing periodic motion in the form of measurement data, and a second device/module which can, based on the measurement data and/or data derived therefrom, trigger and/or control a displacement of the scanning systems and/or the bearing apparatus along the system axis.

摘要翻译： 本发明的至少一个实施例涉及一种用于螺旋扫描检查对象的CT扫描器和/或方法，所述检查对象具有至少一部分经历周期性运动。 在至少一个实施例中，CT扫描仪包括至少一个轴承装置，沿着CT扫描器的系统轴线布置，用于支承检查对象，两个扫描系统可绕系统轴线旋转并且同轴地布置，分别具有 可以发射光束的焦点和与相应焦点相对布置的平面设计检测器阵列，包括可以检测光束的多个分布式检测器元件，其中投影数据可以由扫描系统产生， 表示穿过检查对象时的光线的衰减，并且其中轴承装置和/或扫描系统可以沿着系统轴线移位，第一装置/模块，优选地EKG，其可以检测和存储静止和移动阶段 所述检查对象具有以测量数据的形式进行周期性运动的至少一部分的检查对象;以及第二装置/模块， 根据测量数据和/或从其导出的数据，触发和/或控制扫描系统和/或轴承装置沿着系统轴的位移。

公开(公告)号：US07738686B2

公开(公告)日：2010-06-15

申请号：US11147186

申请日：2005-06-08

申请人： Herbert Bruder ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Karl Stierstorfer

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/027

摘要： A method is for generating tomograms of a cyclically and complexly moving examination object using a tomography unit that reconstructs tomograms in at least one slice plane from detector output data. At least two tomograms from different phases of the movement cycle of the examination object are reconstructed in the region of at least one slice plane. The tomograms are subdivided automatically into subregions with good and bad image quality, and at least one complete tomogram is assembled from subregions with relatively good image quality per slice plane.

摘要翻译： 一种用于使用断层摄影单元产生循环和复杂移动的检查对象的断层图像的方法，所述断层摄影单元从检测器输出数据重建至少一个切片平面中的断层图像。 在至少一个切片平面的区域中重建来自检查对象的移动周期的不同阶段的至少两个断层图像。 断层图像被自动细分为具有良好和不良图像质量的子区域，并且至少一个完整的断层图像从具有相对较好的每个切片平面图像质量的子区域组装。

公开(公告)号：US07664221B2

公开(公告)日：2010-02-16

申请号：US11377887

申请日：2006-03-17

申请人： Herbert Bruder

发明人： Herbert Bruder

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/466 ,  A61B6/503 ,  G06T11/005 ,  G06T11/006 ,  G06T2211/412 ,  Y10S378/901

摘要： A method and computed tomography unit are disclosed for producing computed tomograms of a patient's beating heart by voxelwise reconstruction of volume data records from prescribed cardiac cycle phases. Firstly, a multiplicity of voxelwise partial reconstructions are calculated from projection segments substantially smaller than 180° in accordance with small cardiac phase segments. The complete voxel data that cover overall at least 180° and originate from a preselected cardiac phase are subsequently summed up per cardiac phase to be considered from the pool of the incomplete reconstructed voxel data.

摘要翻译： 公开了一种方法和计算机断层摄影单元，用于通过从规定的心动周期阶段的体数据记录的体素重建来产生患者的跳动心脏的计算机断层图。 首先，根据小的心脏相位段，从基本上小于180°的投影段计算多个体素部分重建。 随后将总体至少180°并且来自预选心脏相的完整体素数据从每个心脏期总结出，以从不完全重建的体素数据池中考虑。