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1. 发明申请

US20090124892A1 Method for measuring cardiac perfusion in a patient and CT system for carrying out the method 审中-公开
标题翻译：用于测量患者和CT系统中心脏灌注的方法，用于执行该方法
公开(公告)号：US20090124892A1
公开(公告)日：2009-05-14
申请号：US12289441
申请日：2008-10-28
申请人： Herbert Bruder , Karl Stierstorfer , Carsten Thierfelder
发明人： Herbert Bruder , Karl Stierstorfer , Carsten Thierfelder
IPC分类号： A61B6/03
CPC分类号： A61B6/481 , A61B6/503 , A61B6/507 , A61B6/541 , A61B6/589 , G01R33/5601 , G01R33/56366
摘要： A method and a CT system are disclosed for measuring the perfusion in vessels and/or muscles of the heart (cardiac perfusion) in a patient. In at least one embodiment of the method the patient receives a contrast agent bolus, the patient is scanned for a scan period of a plurality of cardiac cycles in a scan field of a CT system controlled by the cardiac rhythm, a plurality of CT image data is reconstructed from projection data of a particular cardiac phase from respectively one cardiac cycle, and the temporal profile of the absorption values at at least one location in the heart is determined and displayed on the basis of a plurality of CT image data at successive times. At least one embodiment of the invention is distinguished by the fact that during the examination, the patient is repeatedly and alternately moved in opposite directions along a system axis of the CT system such that his cardiac region passes through the scan field at a cardiac phase range and the cardiac region is completely scanned spirally.
摘要翻译：公开了用于测量患者血管和/或心脏肌肉（心脏灌注）的灌注的方法和CT系统。在该方法的至少一个实施方案中，患者接受造影剂推注，在由心律控制的CT系统的扫描场中扫描患者多个心动周期的扫描周期，多个CT图像数据从特定心脏相位的投影数据分别从一个心动周期重构，并且基于连续的多个CT图像数据来确定和显示心脏中至少一个位置处的吸收值的时间分布。本发明的至少一个实施例的特征在于，在检查期间，患者沿着CT系统的系统轴线沿相反方向重复地和交替地移动，使得他的心脏区域在心脏相位范围内通过扫描场并且心脏区域被螺旋地完全扫描。

2. 发明授权

US08600137B2 Iterative CT image reconstruction with a four-dimensional noise filter 有权
标题翻译：用四维噪声滤波器迭代CT图像重建
公开(公告)号：US08600137B2
公开(公告)日：2013-12-03
申请号：US13111244
申请日：2011-05-19
申请人： Herbert Bruder , Rainer Raupach , Karl Stierstorfer
发明人： Herbert Bruder , Rainer Raupach , Karl Stierstorfer
IPC分类号： G06K9/00
CPC分类号： A61B6/5205 , A61B6/032 , A61B6/4014 , A61B6/4441 , A61B6/482 , A61B6/507 , G06T11/006 , G06T2211/424
摘要： A method is disclosed for reconstruction of image data of an object under examination from measurement data, with the measurement data having been captured during a relative rotational movement between a radiation source of a computed tomography system and the object under examination. In at least one embodiment, first image data is computed by the measurement data being modified to obtain a specific gray value characteristic of the first image data to be reconstructed and the first image data is computed by way of an iterative algorithm using the modified measurement data. Second image data is also computed by a series of chronologically-consecutive images being reconstructed and processing being carried out on the series of images to reduce temporal noise. Finally a combination of the first and the second image data is carried out.
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，其中测量数据已经在计算机断层摄影系统的辐射源与被检查物体之间的相对旋转运动期间被捕获。在至少一个实施例中，通过修改的测量数据来计算第一图像数据，以获得要重建的第一图像数据的特定灰度特性，并且通过使用修改的测量数据的迭代算法来计算第一图像数据。还通过一系列按时间顺序重新连续的图像来计算第二图像数据，并且对该系列图像进行处理以减少时间噪声。最后，执行第一和第二图像数据的组合。

3. 发明申请

US20110293159A1 ITERATIVE CT IMAGE RECONSTRUCTION WITH A FOUR-DIMENSIONAL NOISE FILTER 有权
标题翻译：具有四维噪声滤波器的迭代CT图像重建
公开(公告)号：US20110293159A1
公开(公告)日：2011-12-01
申请号：US13111244
申请日：2011-05-19
申请人： Herbert Bruder , Rainer Raupach , Karl Stierstorfer
发明人： Herbert Bruder , Rainer Raupach , Karl Stierstorfer
IPC分类号： G06K9/00
CPC分类号： A61B6/5205 , A61B6/032 , A61B6/4014 , A61B6/4441 , A61B6/482 , A61B6/507 , G06T11/006 , G06T2211/424
摘要： A method is disclosed for reconstruction of image data of an object under examination from measurement data, with the measurement data having been captured during a relative rotational movement between a radiation source of a computed tomography system and the object under examination. In at least one embodiment, first image data is computed by the measurement data being modified to obtain a specific gray value characteristic of the first image data to be reconstructed and the first image data is computed by way of an iterative algorithm using the modified measurement data. Second image data is also computed by a series of chronologically-consecutive images being reconstructed and processing being carried out on the series of images to reduce temporal noise. Finally a combination of the first and the second image data is carried out.
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，其中测量数据已经在计算机断层摄影系统的辐射源与被检查物体之间的相对旋转运动期间被捕获。在至少一个实施例中，通过修改的测量数据来计算第一图像数据，以获得要重建的第一图像数据的特定灰度特性，并且通过使用修改的测量数据的迭代算法来计算第一图像数据。还通过一系列按时间顺序重新连续的图像来计算第二图像数据，并且对该系列图像执行处理以减少时间噪声。最后，执行第一和第二图像数据的组合。

4. 发明申请

US20080292170A1 Method for scattered radiation correction in an X-ray computed tomography system, and method for generating a tomographic display corrected for scattered radiation, and/or an X-ray computed tomography system 审中-公开
标题翻译：在X射线计算机断层摄影系统中的散射辐射校正方法以及用于产生针对散射辐射校正的断层显像的方法和/或X射线计算机断层摄影系统
公开(公告)号：US20080292170A1
公开(公告)日：2008-11-27
申请号：US12153120
申请日：2008-05-14
申请人： Herbert Bruder , Arkadiusz Polacin , Rainer Raupach , Karl Stierstorfer
发明人： Herbert Bruder , Arkadiusz Polacin , Rainer Raupach , Karl Stierstorfer
IPC分类号： G06K9/00
CPC分类号： A61B6/4014 , A61B6/032
摘要： A method is disclosed for scattered radiation correction in an X-ray computed tomography system having at least two tube-detector systems. It is provided, according to at least one embodiment, to make use of a data record that includes data projections required for the reconstruction and a prescribed number of first scattered radiation projections. Respective scattered radiation components for the scattered radiation correction of all data projections are determined on the basis of the first scattered radiation projections and second scattered radiation projections determined therefrom.
摘要翻译：公开了一种在具有至少两个管检测器系统的X射线计算机断层摄影系统中用于散射辐射校正的方法。根据至少一个实施例，提供使用包括重建所需的数据投影和规定数量的第一散射辐射投影的数据记录。基于从其确定的第一散射辐射投影和第二散射辐射投影来确定用于所有数据投影的散射辐射校正的散射辐射分量。

5. 发明授权

US07277524B2 Method for detecting and visualizing dynamic processes in an object volume 失效
标题翻译：用于检测和可视化对象卷中的动态过程的方法
公开(公告)号：US07277524B2
公开(公告)日：2007-10-02
申请号：US11169913
申请日：2005-06-30
申请人： Herbert Bruder , Thomas Flohr , Ernst Klotz , Karl Stierstorfer
发明人： Herbert Bruder , Thomas Flohr , Ernst Klotz , Karl Stierstorfer
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B5/1075 , A61B6/027 , A61B6/4085 , A61B6/461 , G01N23/046 , G01N2223/419 , G01N2223/612
摘要： A method is disclosed for a multislice computer assisted tomograph, capable of carrying out a spiral scan of an object volume with a pitch p selected to be small enough that each slice of the object volume is multiply detected during the spiral scan. The method includes calculating, using measured data of two temporally consecutive at least one of revolutions and half revolutions, an image of the object volume from which a change inside the object volume between the two temporally consecutive at least one of revolutions and half revolutions is directly visible. An embodiment of the method can permit, for example, the detection and visualization of dynamic processes with an enhanced time resolution.
摘要翻译：公开了一种用于多层计算机辅助断层摄影机的方法，其能够对所选择的节距p的物体体积进行螺旋扫描，所述间距p被选择为足够小，使得在螺旋扫描期间对对象体积的每个切片进行乘法检测。该方法包括使用两个时间上连续的至少一个旋转和半圈的测量数据来计算在两个时间上连续的至少一个转和半转之间的对象体积内的变化直接在其中的对象体积的图像可见。该方法的实施例可以允许例如具有增强的时间分辨率的动态过程的检测和可视化。

6. 发明授权

US07238944B2 Detector for x-ray computer tomography scanners 有权
标题翻译： x射线计算机断层扫描仪的检测器
公开(公告)号：US07238944B2
公开(公告)日：2007-07-03
申请号：US10507896
申请日：2003-03-07
申请人： Herbert Bruder , Thomas Flohr , Karl Stierstorfer
发明人： Herbert Bruder , Thomas Flohr , Karl Stierstorfer
IPC分类号： G01T1/20
CPC分类号： G01T1/2018 , G01T1/1642 , G21K1/025
摘要： A detector for x-ray computer tomography scanners, includes a number of adjacent detector lines extending in an x direction, whereby each detector line is formed from a multitude of adjacent scintillator elements. In order to increase the resolution in the z direction and to simplify the design of the detector, the surface of the scintillator elements are partially covered, which further serves to reduce the size of the aperture in the z direction.
摘要翻译：用于x射线计算机断层扫描仪的检测器包括沿x方向延伸的多个相邻的检测器线，由此每个检测器线由多个相邻的闪烁体元件形成。为了提高z方向的分辨率和简化检测器的设计，闪烁体元件的表面被部分地覆盖，这进一步用于减小孔径在z方向上的尺寸。

7. 发明授权

US06658081B2 Computed tomography method and apparatus for optimized detector utilization and dose utilization 有权
公开(公告)号：US06658081B2
公开(公告)日：2003-12-02
申请号：US10164234
申请日：2002-06-05
申请人： Herbert Bruder , Thomas Flohr , Karl Stierstorfer
发明人： Herbert Bruder , Thomas Flohr , Karl Stierstorfer
IPC分类号： A61B603
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085 , A61B6/4233 , Y10S378/901
摘要： In a method and apparatus for computed tomography, a subject is scanned with a conical ray beam emanating from a focus and the attenuated beam is detected with a matrix-like detector array. The focus is moved on a spiral path around a system axis relative to the subject, and the detector array supplies output data corresponding to the received radiation. The output data are supplied during the motion of the focus on a spiral segment and have a length adequate for the reconstruction of a CT image, and are divided into output datasets with respect to sub-segments. Segment images having an inclined image plane relative to the system axis are reconstructed for the sub-segments. The segment images respectively belonging to the sub-segments are combined into a partial image with respect to a target image plane, and the partial images are combined into a resulting CT image with respect to the target image plane.

8. 发明授权

US08768030B2 CT measurement with multiple X-ray sources 有权
标题翻译： CT测量与多个X射线源
公开(公告)号：US08768030B2
公开(公告)日：2014-07-01
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 , A61B6/00 , A61B6/03 , G06T11/00
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。

9. 发明申请

US20110317901A1 Temporal Resolution In Cardio CT 有权
标题翻译：心脏CT时间分辨率
公开(公告)号：US20110317901A1
公开(公告)日：2011-12-29
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
IPC分类号： G06K9/00
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。

10. 发明授权

US07313214B2 Computed tomography unit having an aperture stop 有权
标题翻译：具有孔径光阑的计算机断层摄影单元
公开(公告)号：US07313214B2
公开(公告)日：2007-12-25
申请号：US11100531
申请日：2005-04-07
申请人： Herbert Bruder , Thomas Flohr , Karl Stierstorfer
发明人： Herbert Bruder , Thomas Flohr , Karl Stierstorfer
IPC分类号： A61B6/03 , G01N23/083
CPC分类号： A61B6/032 , A61B6/4028 , A61B6/4085 , G01N23/046 , G01N2223/419
摘要： A computed tomography unit includes at least one X-ray tube, that scans an object in a fashion rotating in a circle or spiral about a z-axis, in combination with an oppositely situated detector having a multiplicity of detector rows. Each detector row includes an aperture Δz in the z-direction, having a multiplicity of detector elements. Between the X-ray tube and detector, a detector diaphragm is arranged that reduces the aperture Δz of the detector rows in the z-direction. The X-ray tube includes a focus, of variable location relative to the X-ray tube and which alternatingly assumes during scanning at least two different positions that have different z-coordinates relative to the X-ray tube R.
摘要翻译：计算机断层摄影单元包括至少一个X射线管，其以相对位置的具有多个检测器行的检测器的组合，以围绕z轴旋转的方式扫描物体或旋转物体。每个检测器行包括沿z方向的孔径Deltaz，具有多个检测器元件。在X射线管和检测器之间，布置了检测器膜片，其减小了检测器行在z方向上的孔径Deltaz。 X射线管包括相对于X射线管可变位置的焦点，并且在扫描期间交替地假设相对于X射线管R具有不同z坐标的至少两个不同位置。

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