公开(公告)号：US5068609A

公开(公告)日：1991-11-26

申请号：US524344

申请日：1990-05-16

申请人： Herbert Bruder ,  Hubertus Fischer ,  Franz Schmitt ,  Hans-Erich Reinfelder

发明人： Herbert Bruder ,  Hubertus Fischer ,  Franz Schmitt ,  Hans-Erich Reinfelder

IPC分类号： G01R33/565

CPC分类号： G01R33/56554 ,  G01R33/56545

摘要： A method for generating an image using nuclear magnetic resonance signals, which substantially eliminates the presence of so-called "N/2 ghosts," includes the steps of dividing a measurement matrix into a first sub-matrix containing the even-numbered rows of the measurement matrix and into a second sub-matrix having the odd-numbered rows of the measurement matrix, setting the entries in the remaining rows of the sub-matrices to zero, subjecting both sub-matrices to a Fourier transformation at least in the column direction, thereby generating respective intermediate image matrices, multiplying one of the intermediate image matrices by a factor which is calculated from the edge rows of the intermediate image matrices, and adding the intermediate image matrices after the multiplication.

摘要翻译： 使用核磁共振信号产生图像的方法基本上消除了所谓的“N / 2重影”的存在，包括以下步骤：将测量矩阵划分成包含偶数行的第一子矩阵 测量矩阵和具有测量矩阵的奇数行的第二子矩阵，将子矩阵的剩余行中的条目设置为零，使两个子矩阵至少在列方向上进行傅里叶变换 从而生成各自的中间图像矩阵，将中间图像矩阵中的一个乘以从中间图像矩阵的边缘行计算的因子，并且在相乘之后相加中间图像矩阵。

公开(公告)号：US09495769B2

公开(公告)日：2016-11-15

申请号：US13869081

申请日：2013-04-24

申请人： Herbert Bruder ,  Harald Schöndube

发明人： Herbert Bruder ,  Harald Schöndube

IPC分类号： G06T11/00 ,  A61B6/00

CPC分类号： G06T11/003 ,  A61B6/507 ,  G06T11/005 ,  G06T11/006 ,  G06T2211/432

摘要： A method is disclosed for the reconstruction of image data of an object under examination from measured data, wherein the measured data has been acquired during a relative rotational movement between a radiation source of a computed tomography system and the object under examination. A delimited area between the radiation source and a detector represents a field of view, in respect of which measured data can be acquired. During the measured data acquisition, parts of the object under examination were located at least partly outside of the field of view. A reconstruction is carried out of first image data from the measured data. The first image data is modified via a threshold value comparison, and the modified data is processed with a morphological filter, and projection data is calculated. The measured data is modified using the projection data, and, second image data is reconstructed.

摘要翻译： 公开了一种用于从测量数据重建被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被检查对象之间的相对旋转运动期间已经获取了测量数据。 辐射源和检测器之间的界定区域表示可以获取测量数据的视场。 在测量数据采集期间，被检查对象的部分至少部分位于视野外。 从测量数据中对第一图像数据进行重建。 通过阈值比较修改第一图像数据，并用形态滤波器处理修改的数据，并计算投影数据。 使用投影数据修改测量数据，并重建第二图像数据。

公开(公告)号：US08615122B2

公开(公告)日：2013-12-24

申请号：US13273504

申请日：2011-10-14

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

IPC分类号： G06K9/00 ,  A61B6/00

CPC分类号： A61B6/5258 ,  A61B6/5211 ,  G06T5/002 ,  G06T5/30 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/20036 ,  G06T2207/20192

摘要： A method and an X-ray system are disclosed for reduction of the radiation dose used within the framework of an imaging X-ray examination. In at least one embodiment, for each pixel of a recorded image, structure information of a structure which may be present at a distance around the examined pixel is determined and a direction-dependent lowpass filter is applied to the pixel examined in each case, which filter's spatial coverage is less than the distance and which takes into account the morphological information of a structure which may be present with a direction-dependent weighting of the lowpass filter.

摘要翻译： 公开了用于减少在成像X射线检查的框架内使用的辐射剂量的方法和X射线系统。 在至少一个实施例中，对于记录图像的每个像素，确定可能存在于被检查像素周围的距离处的结构的结构信息，并且将方向依赖的低通滤波器应用于在每种情况下检查的像素， 滤波器的空间覆盖小于距离，并且考虑到可能存在与低通滤波器的方向相关的加权的结构的形态信息。

公开(公告)号：US08396275B2

公开(公告)日：2013-03-12

申请号：US12588248

申请日：2009-10-08

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

IPC分类号： A61B6/03

CPC分类号： A61B6/482 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/507

摘要： An x-ray CT system and a method are disclosed for creating tomographic recordings with the aid of an x-ray CT system, with two emitter/detector arrangements operating with an angular offset on a gantry with at least two different x-ray energy spectra. In at least one embodiment, at least one first recording is reconstructed from detector data from two quarter rotations with different x-ray energy spectra and at least one second recording is created from detector data of a scan of at least one of the emitter/detector arrangements over a half rotation. According to at least one embodiment of the invention, the recordings are subjected to high-pass filtering or low-pass filtering in respect of their spatial frequencies and then the filtered recordings are combined to give a resulting recording.

摘要翻译： 公开了一种借助X射线CT系统创建断层摄影记录的X射线CT系统和方法，其中两个发射器/检测器装置在具有至少两个不同x射线能谱的台架上以角度偏移运动 。 在至少一个实施例中，至少一个第一记录是从具有不同X射线能量谱的二分之一旋转的检测器数据中重建的，并且至少一个第二记录是从发射器/检测器中的至少一个的扫描的检测器数据产生的 安排半圈以上。 根据本发明的至少一个实施例，记录对其空间频率进行高通滤波或低通滤波，然后组合滤波后的记录以得到最终记录。

公开(公告)号：US08306303B2

公开(公告)日：2012-11-06

申请号：US12314967

申请日：2008-12-19

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

IPC分类号： A61B6/03

CPC分类号： A61B6/507 ,  A61B6/481 ,  A61B6/504 ,  A61B6/541 ,  G06T5/002 ,  G06T5/10 ,  G06T11/006 ,  G06T2207/10081

摘要： A method, a computational unit and a CT system are disclosed for improving the quality of CT image series. In at least one embodiment, the method includes scanning an examination object over a period of time which permits the acquisition of at least two temporally offset projection data records of an identical recording region; generating at least two temporally offset tomographic image data records, each having a multiplicity of pixels, by reconstructing the projection data records; transforming the image data records into transformation data records of at least two spatial frequency ranges; calculating temporal fitted values of the transformation data records for some of the spatial frequency ranges, and replacing the values of the transformation data records which were fitted by the calculated fitted values; performing an inverse transform of the transformation data records with the fitted values to form new image data records; and displaying the new image data records.

摘要翻译： 公开了一种提高CT图像系列质量的方法，计算单元和CT系统。 在至少一个实施例中，该方法包括在允许获取相同记录区域的至少两个时间偏移的投影数据记录的一段时间内扫描检查对象; 通过重建投影数据记录来产生每个具有多个像素的至少两个时间偏移的断层图像数据记录; 将图像数据记录转换成至少两个空间频率范围的变换数据记录; 计算一些空间频率范围的变换数据记录的时间拟合值，并替换由计算的拟合值拟合的变换数据记录的值; 用拟合值对变换数据记录进行逆变换，形成新的图像数据记录; 并显示新的图像数据记录。

公开(公告)号：US08081732B2

公开(公告)日：2011-12-20

申请号：US12753960

申请日：2010-04-05

申请人： Herbert Bruder ,  Rainer Raupach ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Rainer Raupach ,  Karl Stierstorfer

IPC分类号： G01N23/00

CPC分类号： G01N23/046 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/5282 ,  G01N2223/206 ,  G01N2223/419

摘要： A multi-emitter computed tomography scanner is disclosed, including a plurality of x-ray emitter/detector arrangement pairs arranged offset at an angle to one another. In at least one embodiment, the detector arrangements of the pairs are designed to be energy selective.

摘要翻译： 公开了一种多发射体计算机断层摄影扫描器，包括以彼此成角度偏移地设置的多个x射线发射器/检测器布置对。 在至少一个实施例中，对的检测器布置被设计为能量选择性的。

公开(公告)号：US20110188724A1

公开(公告)日：2011-08-04

申请号：US13020256

申请日：2011-02-03

申请人： Herbert Bruder ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Karl Stierstorfer

IPC分类号： G06K9/00 ,  A61B6/03

CPC分类号： A61B6/481 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/466 ,  A61B6/482 ,  A61B6/504 ,  A61B6/507 ,  G06T11/006 ,  G06T2211/424

摘要： A method is disclosed for reconstructing image data of an examination object from measurement data of a computed tomography system, the examination object having been irradiated simultaneously by a number of X-ray sources while the measurement data was being acquired so that different projections of the examination object associated with the number of X-ray sources were acquired simultaneously for each detector element. In at least one embodiment, different iteration images of the examination object are determined one after the other from the measurement data by way of an iterative algorithm, a computation operation being employed with the iterative algorithm, which is applied to the iteration images and takes the presence of the number of X-ray sources into account.

摘要翻译： 公开了一种用于从计算机断层摄影系统的测量数据重建检查对象的图像数据的方法，在获取测量数据的同时由多个X射线源同时照射检查对象，使得检查的不同预测 与每个检测器元件同时获取与X射线源数量相关联的物体。 在至少一个实施例中，通过迭代算法从测量数据一个接一个地确定检查对象的不同迭代图像，与迭代算法一起使用计算操作，其应用于迭代图像，并采用 存在X射线源的数量。

公开(公告)号：US07860209B2

公开(公告)日：2010-12-28

申请号：US12000831

申请日：2007-12-18

申请人： Herbert Bruder ,  Rainer Raupach

发明人： Herbert Bruder ,  Rainer Raupach

IPC分类号： H05G1/62 ,  G01N23/083

CPC分类号： A61B6/541 ,  A61B6/027

摘要： A method is described for imaging an organ in a human or animal body via a computed tomography system having an X-ray radiation source which rotates around the body along a circumferential ring. In at least one embodiment, the circumferential ring in each case is fixed in one position for recording of an image data segment on one slice plane during one revolution of the X-ray radiation source relative to the body, and the X-ray radiation source is triggered by a cycle signal which represents a movement cycle of the organ and is activated for a limited measurement time interval. In at least one embodiment, the circumferential ring is moved sequentially to further positions relative to the body between each of the recordings, in order to record image data on further slice planes. In at least one embodiment, the timing and duration of the measurement time interval for an image data segment to be recorded are dynamically matched to a structure of the cycle signal. Furthermore, in at least one embodiment, a control device for a computed tomography system and/or a computed tomography system having a control device such as this are described.

摘要翻译： 描述了一种用于通过具有沿着圆周环围绕身体旋转的X射线辐射源的计算机断层摄影系统对人体或动物体内的器官进行成像的方法。 在至少一个实施例中，每个情况下的圆周环固定在一个位置，用于在X射线辐射源相对于身体旋转一周期间在一个切片平面上记录图像数据段，并且X射线辐射源 由表示器官的移动周期的周期信号触发，并在有限的测量时间间隔内被激活。 在至少一个实施例中，为了将图像数据记录在另外的切片平面上，圆周环顺序移动到相对于身体在每个记录之间的更多位置。 在至少一个实施例中，要记录的图像数据段的测量时间间隔的定时和持续时间与循环信号的结构动态匹配。 此外，在至少一个实施例中，描述了具有诸如此类的控制装置的计算机断层摄影系统和/或计算机断层摄影系统的控制装置。

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：US20100054569A1

公开(公告)日：2010-03-04

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

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。