公开(公告)号：US07286629B2

公开(公告)日：2007-10-23

申请号：US11119750

申请日：2005-05-03

申请人： Herbert Bruder ,  Thomas Flohr

发明人： Herbert Bruder ,  Thomas Flohr

IPC分类号： G21K1/12

CPC分类号： A61B6/032 ,  A61B6/503 ,  Y10S378/901

摘要： A method is for taking tomograms of a patient's beating heart with the aid of a computed tomography unit. ECG signals of the beating heart are recorded. In order to reconstruct the cardiac tomograms, use is made of detector data that originate from a selected cycle area of the cardiac cycle. The cycle area from which the data for the reconstruction originate is selected automatically and individually per cycle, for at least one cardiac cycle, by use of pattern recognition.

摘要翻译： 一种方法是借助于计算机断层摄影单元来获取患者的跳动心脏的断层图像。 记录跳动心脏的ECG信号。 为了重建心脏断层图像，使用源于心脏周期的选定周期区域的检测器数据。 通过使用模式识别，每个周期自动和单独地选择用于重建的数据的周期区域，用于至少一个心动周期。

公开(公告)号：US07127025B2

公开(公告)日：2006-10-24

申请号：US10995339

申请日：2004-11-24

申请人： Herbert Bruder ,  Thomas Flohr

发明人： Herbert Bruder ,  Thomas Flohr

IPC分类号： A61B6/03 ,  G01N23/00

CPC分类号： A61B6/541 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/4085

摘要： A method is for production of tomographic section images, in particular X-ray CT images, of an at least partially periodically moving examination object with periodically changing movement and rest phases, preferably of a heart of a living being. A number of focus detector combinations are used, with the time resolution of the CT scanner being significantly increased by supplementary combination of detector data in the correct phase. On the one hand, a number of focus detector combinations which scan an examination object at the same time are used; and on the other hand a number of adjacent movement cycles of a periodically moving examination object are performed.

摘要翻译： 一种方法是用于生产至少部分周期性移动的检查对象的断层图像，特别是X射线CT图像，周期性地改变运动和休息阶段，优选地是生命的心脏。 使用多个焦点检测器组合，通过在正确相位中的检测器数据的补充组合，CT扫描仪的时间分辨率显着增加。 一方面，使用同时扫描检查对象的多个聚焦检测器组合; 另一方面，执行周期性移动的检查对象的多个相邻移动周期。

公开(公告)号：US07016455B2

公开(公告)日：2006-03-21

申请号：US10762795

申请日：2004-01-22

申请人： Herbert Bruder ,  Thomas Flohr ,  Karlheinz Pauli ,  Juergen Simon

发明人： Herbert Bruder ,  Thomas Flohr ,  Karlheinz Pauli ,  Juergen Simon

IPC分类号： H05G1/64 ,  H05G1/70

CPC分类号： A61B6/032 ,  A61B6/4021 ,  A61B6/4085 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612

摘要： An imaging tomography apparatus, in particular an x-ray computed tomography apparatus, has two acquisition systems capable of rotating around a common rotation axis. Each of the acquisition systems has a radiator as well as a detector. The maximum measurement fields scanned by the two acquisition systems given rotation around the rotation axis are of different sizes, or can be adjusted to different sizes. In particular, the lengths of both detectors measured in the azimuthal direction—are of different sizes. The tomography apparatus can be fashioned to scan the entire body cross-section of an examination subject or of a patient with conventional temporal resolution, and to scan detail region, such as a heart region, with an increased temporal resolution or accelerated data acquisition rate in comparison to a device with only one acquisition system.

摘要翻译： 成像断层摄影装置，特别是X射线计算机断层摄影装置，具有能够围绕公共旋转轴旋转的两个采集系统。 每个采集系统都有散热器和检测器。 由旋转轴旋转的两个采集系统扫描的最大测量场具有不同的尺寸，或可调整为不同的尺寸。 特别地，在方位角方向上测量的两个检测器的长度具有不同的尺寸。 层析摄影装置可以被形成为扫描具有常规时间分辨率的检查对象或患者的整个身体横截面，并且以增加的时间分辨率或加速的数据获取速率扫描诸如心脏区域的细节区域 与仅具有一个采集系统的设备进行比较。

公开(公告)号：US20050185758A1

公开(公告)日：2005-08-25

申请号：US11053879

申请日：2005-02-10

申请人： Herbert Bruder ,  Thomas Flohr ,  Christoph Panknin

发明人： Herbert Bruder ,  Thomas Flohr ,  Christoph Panknin

IPC分类号： A61B6/03 ,  A61N5/10

CPC分类号： A61B6/032 ,  A61B6/541 ,  A61N5/103 ,  A61N5/1037 ,  A61N5/1064

摘要： A method is for producing CT scans, particularly for planning radiation therapy for a patient in the chest region, where the exclusive use of CT data is used to infer the respective motion phase of a scanned region. This information is used to produce phase-specific CT images. These images are used for the irradiation planning in the chest region, in particular.

摘要翻译： 一种用于产生CT扫描的方法，特别是用于为胸部区域中的患者规划放射治疗，其中专用CT数据用于推断扫描区域的相应运动相位。 该信息用于生成相位特定的CT图像。 这些图像特别用于胸部区域的照射规划。

公开(公告)号：US06819735B2

公开(公告)日：2004-11-16

申请号：US10606798

申请日：2003-06-27

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach

IPC分类号： A61B603

CPC分类号： G06T5/007 ,  G06T11/008 ,  G06T2207/10081 ,  Y10S378/901

摘要： A method is for organ-specific image optimization in computed tomography. In this case, the HU values of a layer of the body previously recorded with a CT device are calculated and, on this basis, a first CT image is created. For this first CT image, a histogram is also created, in which the frequency distribution of the HU values is reproduced. In a histogram, at least one organ-specific HU region is defined and the latter is allocated an HU-dependent transfer function. Furthermore, a second CT image is created on the basis of the previously calculated HU values for the layer of the body which has been recorded. The first and second CT image are filtered with the HU-dependent transfer function and, finally, the filtered first CT image is mixed with the filtered second CT image.

公开(公告)号：US09147267B2

公开(公告)日：2015-09-29

申请号：US13674422

申请日：2012-11-12

申请人： Herbert Bruder ,  Rainer Raupach

发明人： Herbert Bruder ,  Rainer Raupach

IPC分类号： G06K9/00 ,  G06T11/00 ,  A61B6/03 ,  A61B6/00

CPC分类号： G06T11/003 ,  A61B6/032 ,  A61B6/5205 ,  G06T11/006 ,  G06T2211/424

摘要： A method and image reconstruction facility are disclosed for reconstructing an image dataset based on a projection dataset acquired with the aid of an x-ray computed tomography apparatus. With an embodiment of the method, a first image dataset is reconstructed based on the projection dataset and an edge image dataset is generated, which indicates a measure of an edge strength of edges occurring in at least one spatial/temporal direction in the first image dataset, as a function of location. An output image dataset is then generated based on the first image dataset, with the resolution in the first image dataset being increased as a function of location in at least one spatial/temporal direction taking into account the edge image dataset.

摘要翻译： 公开了一种基于通过X射线计算机断层摄影装置获得的投影数据集来重构图像数据集的方法和图像重建装置。 利用该方法的实施例，基于投影数据集重建第一图像数据集，并且生成边缘图像数据集，其指示在第一图像数据集中的至少一个空间/时间方向上出现的边缘的边缘强度的度量 ，作为位置的函数。 然后，基于第一图像数据集生成输出图像数据集，其中第一图像数据集中的分辨率随着至少一个空间/时间方向的位置而增加，同时考虑边缘图像数据集。

公开(公告)号：US08892187B2

公开(公告)日：2014-11-18

申请号：US11727751

申请日：2007-03-28

申请人： Herbert Bruder ,  Rainer Raupach

发明人： Herbert Bruder ,  Rainer Raupach

IPC分类号： A61B5/05 ,  G06T3/40 ,  A61B6/00 ,  G06T7/20 ,  A61B6/03

CPC分类号： G06T3/4007 ,  A61B6/032 ,  A61B6/503 ,  A61B6/5217 ,  G06T7/246 ,  G06T2207/30048 ,  G06T2211/412

摘要： A method is disclosed for reducing step artifacts in the forward increment direction of a cardio CT representation. In at least one embodiment, volume recordings or section images of first and second sub-volumes of a heart volume, which lie adjacent to one another in the forward increment direction and partially overlap in an overlap region, are recorded by a computer tomography system. Each sub-volume's detector data is used for the reconstruction coming from different heart cycles. Finally, a displacement vector relative to a second sub-volume is determined at least for a selected point of the overlap region of a first sub-volume and the second sub-volume is subjected at least partially to a spatial transformation according to the at least one displacement vector.

摘要翻译： 公开了一种用于减少心脏CT表示的向前增量方向上的步骤伪像的方法。 在至少一个实施例中，通过计算机断层摄影系统记录心脏体积的第一和第二子体积的体积记录​​或分段图像，其以正向增量方向彼此相邻并且在重叠区域中部分重叠。 每个子体积的检测器数据用于来自不同心脏周期的重建。 最后，至少对于第一子体积的重叠区域的选定点确定相对于第二子体积的位移矢量，并且至少部分地将第二子体积至少部分地进行空间变换，至少 一个位移矢量。

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：US08639003B2

公开(公告)日：2014-01-28

申请号：US12710423

申请日：2010-02-23

申请人： Herbert Bruder ,  Rainer Raupach

发明人： Herbert Bruder ,  Rainer Raupach

IPC分类号： G06K9/00

CPC分类号： G06T5/002 ,  G06T5/50 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/10144 ,  G06T2207/20012 ,  G06T2207/20056 ,  G06T2207/20216 ,  G06T2207/30004

摘要： Method for the noise reduction of CT image data and an image processing system are disclosed, with a scanning of an examination object and generation of at least two CT image data records each taking place on the basis of a different x-ray energy spectrum. In at least one embodiment, a break-down of the data image records into at least two broken-down image data records takes place in each instance, with a lowest local frequency band (f(1)) with the index k=1 and at least one high local frequency band (f(k)) with the index k=2 to N. In at least one embodiment, the determination of the noise into at least one of the image data records per x-ray energy spectrum and calculation of at least one new image data record takes place in each instance by using an unchanged broken-down image data record with the lowest local frequency band and an image data record, generated from a noise-minimized weighted combination of broken-down image data records, which originate from the scannings using different x-ray energy spectra.

摘要翻译： 公开了用于CT图像数据的降噪的方法和图像处理系统，其中扫描检查对象并且基于不同的x射线能量谱产生至少两个CT图像数据记录。 在至少一个实施例中，数据图像记录分解成至少两个分解图像数据记录，每个情况下都具有索引k = 1的最低本地频带（f（1）），并且 至少一个具有索引k = 2至N的高本地频带（f（k））。在至少一个实施例中，将噪声确定为每个x射线能谱和计算中的至少一个图像数据记录 至少一个新的图像数据记录在每个实例中通过使用从分解图像数据记录的噪声最小化的加权组合产生的具有最低本地频带和图像数据记录的未变分解图像数据记录来进行 ，其来源于使用不同x射线能谱的扫描。

公开(公告)号：US08605977B2

公开(公告)日：2013-12-10

申请号：US12874302

申请日：2010-09-02

申请人： Herbert Bruder ,  Rainer Raupach

发明人： Herbert Bruder ,  Rainer Raupach

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/4014 ,  A61B6/482 ,  A61B6/507 ,  G06T5/002 ,  G06T2207/10081 ,  G06T2207/20012 ,  G06T2207/30004 ,  H04N1/409

摘要： A method is disclosed for reconstruction of image data of an examination object from measured data, wherein the measured data was captured during a relative rotational motion between a radiation source of a computed tomography system and the examination object. Image data of the examination object is determined from the measured data. In at least one embodiment, new image data is obtained by noise-reducing processing of the image data, in which weighted high-pass filtering of the image data is performed, the weighting taking account of differences between pixel values of different pixels such that increasing differences result in a weaker high-pass effect. A noise-reducing smoothing of the image data is performed using the weighted high-pass filtering.

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捕获测量数据。 从测量数据确定检查对象的图像数据。 在至少一个实施例中，通过对图像数据进行加权高通滤波的图像数据的噪声降低处理来获得新的图像数据，加权考虑不同像素的像素值之间的差异，使得增加 差异导致较弱的高通效应。 使用加权高通滤波来执行图像数据的降噪平滑处理。