公开(公告)号：US20070025499A1

公开(公告)日：2007-02-01

申请号：US11491959

申请日：2006-07-25

申请人： Herbert Bruder ,  Thomas Flohr ,  Karl Schwarz ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Karl Schwarz ,  Karl Stierstorfer

IPC分类号： A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： A61B6/4014 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  G01N2223/419

摘要： A method is disclosed for compiling computer tomographic representations using a CT system with at least two angularly offset ray sources. A first ray cone with a relatively larger fan angle and a second ray cone with a relatively smaller fan angle scan an object circularly or spirally. The first ray cone generates a first dataset A and the second ray cone generates a dataset B. The dataset B of the smaller ray cone is supplemented with other data at the edge to give an expanded dataset B+ for reconstruction of the CT representation. The expanded dataset B+ of the second, smaller ray cone and the dataset A of the first, larger ray cone is subjected to a convolution operation to give datasets B+′ and A′. Finally, a back projection to reconstruct sectional images or volume data is respectively carried out from the convoluted datasets B+′ and A′. The dataset B is supplemented with data of the dataset A and supplementary data are removed from the dataset B+′ after the convolution but before the back projection.

摘要翻译： 公开了一种使用具有至少两个角偏移射线源的CT系统来编译计算机断层图像表示的方法。 具有相对较大扇角的第一射线锥体和具有较小扇形角度的第二射线锥体圆形地或螺旋地扫描物体。 第一射线锥产生第一数据集A，第二射线锥生成数据集B.较小射线锥的数据集B在边缘被补充其他数据，以给出用于重建CT表示的扩展数据集B +。 将第二较小的光线锥体的扩展数据集B +和第一个较大的光线锥体的数据集A进行卷积运算，以给出数据集B +'和A'。 最后，从卷积数据集B +'和A'分别进行重建截面图像或体积数据的背投影。 数据集B补充数据集A的数据，并且在卷积之后但在反投影之前从数据集B +'中删除补充数据。

公开(公告)号：US08000433B2

公开(公告)日：2011-08-16

申请号：US10667475

申请日：2003-09-23

申请人： Herbert Bruder ,  Thomas Flohr ,  Annabella Rauscher ,  Karl Schwarz ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Annabella Rauscher ,  Karl Schwarz ,  Karl Stierstorfer

IPC分类号： A61B6/03

CPC分类号： G06T11/005 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085

摘要： A method is for image reconstruction for computed tomography with a non-one-dimensional, extended detector. The rays of the detector are weighted during the backprojection as a function of their position in the beam.

摘要翻译： 一种用于使用非一维扩展检测器进行计算机断层扫描的图像重建的方法。 在反投影期间，将检测器的光线作为其在光束中的位置的函数进行加权。

公开(公告)号：US20080285709A1

公开(公告)日：2008-11-20

申请号：US12149487

申请日：2008-05-02

申请人： Karl Schwarz ,  Karl Stierstorfer

发明人： Karl Schwarz ,  Karl Stierstorfer

IPC分类号： A61B6/00

CPC分类号： G06T11/006 ,  A61B6/027

摘要： An imaging method is disclosed for variable pitch spiral CT. In at least one embodiment, the method includes spiral scanning of an examination object lying on a patient table, with the aid of a beam emanating from at least one focus, and the aid of a detector arrangement of planar design lying opposite the focus, the detector arrangement supplying output data that represent the attenuation of the beams during passage through the examination object; filtering the output data; weighted back projection of the filtered output data; and visualizing a layer or a volume on a display unit on the basis of the back projected output data. In at least one embodiment, a non constant pitch of the spiral scanning is taken into account computationally during the back projection. In at least one embodiment, a CT machine is disclosed for carrying out the above named method.

摘要翻译： 公开了一种用于变桨距螺旋CT的成像方法。 在至少一个实施例中，该方法包括借助于从至少一个焦点发出的光束以及与焦点相对的平面设计的检测器布置的帮助，躺在患者台上的检查对象的螺旋扫描， 提供输出数据的检测器装置，其表示在通过检查对象期间光束的衰减; 过滤输出数据; 滤波输出数据的加权反投影; 并且基于背投影输出数据可视化显示单元上的图层或音量。 在至少一个实施例中，螺旋扫描的非恒定间距在后投影期间被计算考虑在内。 在至少一个实施例中，公开了一种用于执行上述方法的CT机器。

公开(公告)号：US07978810B2

公开(公告)日：2011-07-12

申请号：US12149487

申请日：2008-05-02

申请人： Karl Schwarz ,  Karl Stierstorfer

发明人： Karl Schwarz ,  Karl Stierstorfer

IPC分类号： A61B6/00

CPC分类号： G06T11/006 ,  A61B6/027

摘要： An imaging method is disclosed for variable pitch spiral CT. In at least one embodiment, the method includes spiral scanning of an examination object lying on a patient table, with the aid of a beam emanating from at least one focus, and the aid of a detector arrangement of planar design lying opposite the focus, the detector arrangement supplying output data that represent the attenuation of the beams during passage through the examination object; filtering the output data; weighted back projection of the filtered output data; and visualizing a layer or a volume on a display unit on the basis of the back projected output data. In at least one embodiment, a non constant pitch of the spiral scanning is taken into account computationally during the back projection. In at least one embodiment, a CT machine is disclosed for carrying out the above named method.

摘要翻译： 公开了一种用于变桨距螺旋CT的成像方法。 在至少一个实施例中，该方法包括借助于从至少一个焦点发出的光束以及与焦点相对的平面设计的检测器布置的帮助，躺在患者台上的检查对象的螺旋扫描， 提供输出数据的检测器装置，其表示在通过检查对象期间光束的衰减; 过滤输出数据; 滤波输出数据的加权反投影; 并且基于背投影输出数据可视化显示单元上的图层或音量。 在至少一个实施例中，螺旋扫描的非恒定间距在后投影期间被计算考虑在内。 在至少一个实施例中，公开了一种用于执行上述方法的CT机器。

公开(公告)号：US07711081B2

公开(公告)日：2010-05-04

申请号：US11491959

申请日：2006-07-25

申请人： Herbert Bruder ,  Thomas Flohr ,  Karl Schwarz ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Karl Schwarz ,  Karl Stierstorfer

IPC分类号： A61B6/03

CPC分类号： A61B6/4014 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  G01N2223/419

摘要： A method is disclosed for compiling computer tomographic representations using a CT system with at least two angularly offset ray sources. A first ray cone with a relatively larger fan angle and a second ray cone with a relatively smaller fan angle scan an object circularly or spirally. The first ray cone generates a first dataset A and the second ray cone generates a dataset B. The dataset B of the smaller ray cone is supplemented with other data at the edge to give an expanded dataset B+ for reconstruction of the CT representation. The expanded dataset B+ of the second, smaller ray cone and the dataset A of the first, larger ray cone is subjected to a convolution operation to give datasets B+′ and A′. Finally, a back projection to reconstruct sectional images or volume data is respectively carried out from the convoluted datasets B+′ and A′. The dataset B is supplemented with data of the dataset A and supplementary data are removed from the dataset B+′ after the convolution but before the back projection.

摘要翻译： 公开了一种使用具有至少两个角偏移射线源的CT系统来编译计算机断层图像表示的方法。 具有相对较大扇角的第一射线锥体和具有较小扇形角度的第二射线锥体圆形地或螺旋地扫描物体。 第一射线锥产生第一数据集A，第二射线锥生成数据集B.较小射线锥的数据集B在边缘被补充其他数据，以给出用于重建CT表示的扩展数据集B +。 将第二较小的光线锥体的扩展数据集B +和第一个较大的光线锥体的数据集A进行卷积运算，以给出数据集B +'和A'。 最后，从卷积数据集B +'和A'分别进行重建截面图像或体积数据的背投影。 数据集B补充数据集A的数据，并且在卷积之后但在反投影之前从数据集B +'中删除补充数据。

公开(公告)号：US5334136A

公开(公告)日：1994-08-02

申请号：US467444

申请日：1990-01-19

申请人： Karl Schwarz ,  Richard S. Meltzer ,  Charles C. Church

发明人： Karl Schwarz ,  Richard S. Meltzer ,  Charles C. Church

IPC分类号： A61M1/36 ,  B01D19/00 ,  A61M1/30

CPC分类号： B01D19/0078 ,  A61M1/3627 ,  A61M1/363

摘要： A system for reducing post-cardiopulmonary bypass encephalopathy due to microembolization of the brain of a patient with gaseous microbubbles (less than 40 microns in diameter) occurring during open-heart surgery using a cardiopulmonary bypass machine by passing a stream of blood from the patient through an ultrasonic traveling wave which propagates across the stream without reflection and sweeps the blood clean of the microbubbles without inducing blood cell trauma. The blood passes through a chamber between an input port and a filtrate exit port. An ultrasonic beam is projected so that a pressure maximum of the main lobe of the beam is centered at the filtrate exit port. The microbubbles are carried by the traveling wave to a waste exit port in the chamber downstream of the input port. To prevent establishment of resonance conditions, reflections and traveling waves the chamber may be submerged in a liquid bath and a body of acoustic absorbent material disposed at an end of the chamber opposite to the end into which the ultrasonic beam is projected.

摘要翻译： 一种系统，用于通过使来自患者的血液流通过心肺旁路机器的患者的脑部微栓塞（小于直径小于40微米）而在心脏外科手术中发生的体外循环脑病系统， 超声波行波，其在没有反射的情况下传播，并扫描微泡的血液清洁而不引起血细胞损伤。 血液通过输入口和滤液出口之间的腔室。 投射超声波束，使得光束的主瓣的最大压力在滤液出口处居中。 微波通过行波携带到输入端口下游的室中的废物出口。 为了防止共振条件的建立，反射和行波，室可以浸没在液体槽中，并且吸声材料体设置在与突出超声波束的端部相反的端部处的吸声材料体。

公开(公告)号：US20110293160A1

公开(公告)日：2011-12-01

申请号：US13111315

申请日：2011-05-19

申请人： Herbert Bruder ,  Martin Petersilka ,  Rainer Raupach ,  Karl Schwarz

发明人： Herbert Bruder ,  Martin Petersilka ,  Rainer Raupach ,  Karl Schwarz

IPC分类号： G06K9/00

CPC分类号： A61B6/5205 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/4441 ,  A61B6/482 ,  A61B6/507 ,  A61B6/5258 ,  G06T11/006 ,  G06T2211/424

摘要： A method is disclosed for reconstructing image data of an examination object from measured data, wherein the measured data was captured previously during a relative rotary motion between a radiation source of a computed tomography system and the examination object. In at least one embodiment, the measured data is modified to achieve a particular grayscale characteristic of the image data to be reconstructed. The image data is calculated by way of an iterative algorithm using the modified measured data, wherein no arithmetic step for reducing noise is employed in the iterations.

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和检查对象之间的相对旋转运动期间先前捕获测量数据。 在至少一个实施例中，修改测量数据以实现要重建的图像数据的特定灰度特性。 通过使用修改的测量数据的迭代算法计算图像数据，其中在迭代中不采用用于降低噪声的算术步骤。

公开(公告)号：US5200886A

公开(公告)日：1993-04-06

申请号：US838452

申请日：1992-03-10

申请人： Karl Schwarz ,  Horst Bartussek ,  Helmut Rettenmaier

发明人： Karl Schwarz ,  Horst Bartussek ,  Helmut Rettenmaier

IPC分类号： H02M3/335 ,  H02M7/5375

CPC分类号： H02M3/33507 ,  H02M2001/0006

摘要： It is intended to improve especially a switched-mode power supply operating in accordance with the flyback converter principle, in such a manner that it has a characteristic during the run-up phase which is easier on the components compared with previously. To keep the regulating voltage of the regulating circuit (Rk) of the switched-mode power supply constant during the run-up phase, a differentiating capacitor (Cd) is connected in parallel with a diode circuit (D1) in one case and between the cathode terminals of two diode circuits (D1 and D2) in the other case. Keeping the regulating voltage constant results in a uniformly linear running-up of the switched-mode power supply output voltage (Ua), as a result of which lastly the loading on various components is also reduced.

摘要翻译： PCT No.PCT / DE90 / 00697 Sec。 371日期：1992年3月10日 102（e）1992年3月10日PCT PCT 1990年9月11日PCT公布。 公开号WO91 / 04605 日期为1991年04月4日。其目的在于提高特别是按照反激转换器原理工作的开关电源，使其具有在起动阶段期间的特性，比较容易 以前。 为了保持开关阶段电源的调节电路（Rk）的调节电压恒定，在一种情况下，差分电容（Cd）与二极管电路（D1）并联连接， 在另一种情况下，两个二极管电路（D1和D2）的阴极端子。 保持调节电压恒定导致开关模式电源输出电压（Ua）的均匀线性上升，结果最终也减少了各种部件上的负载。

公开(公告)号：US08718343B2

公开(公告)日：2014-05-06

申请号：US13111315

申请日：2011-05-19

申请人： Herbert Bruder ,  Martin Petersilka ,  Rainer Raupach ,  Karl Schwarz

发明人： Herbert Bruder ,  Martin Petersilka ,  Rainer Raupach ,  Karl Schwarz

IPC分类号： G06K9/00

CPC分类号： A61B6/5205 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/4441 ,  A61B6/482 ,  A61B6/507 ,  A61B6/5258 ,  G06T11/006 ,  G06T2211/424

摘要： A method is disclosed for reconstructing image data of an examination object from measured data, wherein the measured data was captured previously during a relative rotary motion between a radiation source of a computed tomography system and the examination object. In at least one embodiment, the measured data is modified to achieve a particular grayscale characteristic of the image data to be reconstructed. The image data is calculated by way of an iterative algorithm using the modified measured data, wherein no arithmetic step for reducing noise is employed in the iterations.

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和检查对象之间的相对旋转运动期间先前捕获测量数据。 在至少一个实施例中，修改测量数据以实现要重建的图像数据的特定灰度特性。 通过使用修改的测量数据的迭代算法计算图像数据，其中在迭代中不采用用于降低噪声的算术步骤。

公开(公告)号：US06400791B1

公开(公告)日：2002-06-04

申请号：US09585533

申请日：2000-06-02

申请人： Karl Schwarz

发明人： Karl Schwarz

IPC分类号： A61B600

CPC分类号： A61B6/4447 ,  A61B6/027 ,  A61B6/0457 ,  G01N23/046 ,  G01N2223/419

摘要： In a computed tomography (CT) device for generating tomograms of slices of an examination object, which are inclined relative to the longitudinal axis of a patient support plate that is provided for an examination subject, the gantry of the CT device and the support plate can be tilted relative to one another and in the tilted state, the support plate and the gantry can be linearly adjusted relative to one another substantially in the direction of the system axis of the CT device for generating a relative movement between the gantry and the support plate.

摘要翻译： 在用于产生相对于为被检查对象设置的患者支撑板的纵向轴线倾斜的检查对象的切片的计算机断层摄影（CT）装置中，CT装置和支撑板的台架可以 相对于彼此倾斜并且在倾斜状态下，支撑板和台架可以基本上沿着CT装置的系统轴线的方向彼此线性调节，以在台架和支撑板之间产生相对运动 。