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91. 发明申请

US20080285709A1 Imaging method for variable pitch spiral CT and a CT machine for carrying out the method 有权
标题翻译：可变螺距CT成像方法及CT机执行方法
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。

92. 发明申请

US20080232546A1 Method for scattered radiation correction in x-ray imaging, and x-ray imaging system for this purpose 有权
标题翻译： X射线成像中散射辐射矫正的方法和用于此目的的X射线成像系统
公开(公告)号：US20080232546A1
公开(公告)日：2008-09-25
申请号：US11896213
申请日：2007-08-30
申请人： Karl Stierstorfer
发明人： Karl Stierstorfer
IPC分类号： G01N23/20
CPC分类号： G03B42/02 , A61B6/583 , A61B6/585 , G01N23/046 , G01N2223/419 , H04N5/325
摘要： A method is disclosed for scattered radiation correction in X-ray imaging, and an X-ray imaging system is disclosed for carrying out the method. In at least one embodiment of the method, measurement signals t from an X-ray detector are digitized and converted to logarithmic form, with these measurement signals t having been obtained by radiation through an examination object by the X-ray detector. Correction values which have been obtained from a series development of a logarithm 1n(1−s/t) are subtracted from the measurement signals that have been converted to logarithmic form, with this series development being terminated at the earliest after the first order, where s denotes a previously determined scattered radiation signal from radiation passed through the examination object. At least one embodiment of the method and the associated X-ray imaging system allow scattered radiation to be corrected for with increased accuracy, on the basis of measurement signals that had been converted to logarithmic form.
摘要翻译：公开了用于X射线成像中的散射辐射校正的方法，并且公开了用于执行该方法的X射线成像系统。在该方法的至少一个实施例中，来自X射线检测器的测量信号t被数字化并转换为对数形式，其中这些测量信号t已经通过X射线检测器通过检查对象的辐射获得。从已经被转换成对数形式的测量信号中减去从对数1n（1-s / t）的系列展开获得的校正值，该系列开发在第一次之后最早终止，其中 s表示来自经过检查对象的辐射的预先确定的散射辐射信号。该方法和相关联的X射线成像系统的至少一个实施例基于已被转换成对数形式的测量信号，允许以更高的精度校正散射辐射。

93. 发明申请

US20080048126A1 X-ray detector 有权
标题翻译： X射线探测器
公开(公告)号：US20080048126A1
公开(公告)日：2008-02-28
申请号：US11798389
申请日：2007-05-14
申请人： Silke Janssen , Karl Stierstorfer
发明人： Silke Janssen , Karl Stierstorfer
IPC分类号： G01T1/00
CPC分类号： H04N5/32 , G01T1/2985 , G03B42/02
摘要： An X-ray detector is disclosed for detecting individual quanta. In at least one embodiment, the X-ray detector includes a plurality of detector elements and an evaluation unit that is connected to the latter for data purposes and is set up in such a way that each detector element is assigned a first energy threshold, wherein in each case one portion of various radiation spectra that can be picked up by the detector element exhibits an energy below the energy threshold, and a further portion of the respective radiation spectrum exhibits an energy above the energy threshold. Further, the energy thresholds of the various detector elements are set in a different fashion in such a way that the ratio between the portion, exhibiting an energy above or below the energy threshold in the case of a first radiation spectrum, of the radiation spectrum and the portion, exhibiting an energy above or below the energy threshold in the case of a second radiation spectrum, of the radiation spectrum is intermatched in the case of the various detector elements.
摘要翻译：公开了用于检测单个量子的X射线检测器。在至少一个实施例中，X射线检测器包括多个检测器元件和评估单元，其连接到后者用于数据目的，并且被设置成使得每个检测器元件被分配有第一能量阈值，其中在每种情况下，可以由检测器元件拾取的各种辐射光谱的一部分表现出低于能量阈值的能量，并且相应辐射光谱的另一部分表现出高于能量阈值的能量。此外，各种检测器元件的能量阈值以不同的方式设置，使得在辐射光谱的第一辐射光谱的情况下，表现出高于或低于能量阈值的能量的部分之间的比率，以及在各种检测器元件的情况下，在第二辐射光谱的情况下，表现出高于或低于能量阈值的能量的部分的辐射光谱的部分是互配的。

94. 发明申请

US20070093711A1 Method and tomography unit for the reconstruction of a tomographic representation of an object 失效
标题翻译：用于重建对象的断层图像的方法和断层摄影单元
公开(公告)号：US20070093711A1
公开(公告)日：2007-04-26
申请号：US11584544
申请日：2006-10-23
申请人： Martin Hoheisel , Wolfgang Harer , Holger Kunze , Karl Stierstorfer
发明人： Martin Hoheisel , Wolfgang Harer , Holger Kunze , Karl Stierstorfer
IPC分类号： A61B5/05
CPC分类号： G01N23/046 , A61B6/032 , A61B6/583 , G01N2223/419 , G01N2223/612 , G06T11/005 , G06T2211/421 , G06T2211/424
摘要： A method is disclosed for reconstructing a tomographic representation of an object from projection data off a moving radiation source through this object onto a detector, filtering and back projection of the projection data being executed in the reconstruction. In an embodiment of the method, by using at least one identical spatial arrangement of the radiation source, the detector and a test object instead of the object to be scanned, there is determined by test projections and an iterative reconstruction technique, a filter that in the given arrangement results in an optimum filtering and back projection of the projection data of the test object for the tomographic representation. Further, the object is scanned instead of the test object in the given arrangement and projection data are determined. Finally, the reconstruction of the tomographic representation is carried out using these projection data and the filter determined. Moreover, an embodiment of a tomography unit for carrying out this method is also disclosed.
摘要翻译：公开了一种用于将通过该物体的运动辐射源的投影数据从物体重建成检测器的方法，对重建中正在执行的投影数据进行滤波和反投影。在该方法的一个实施例中，通过使用辐射源，检测器和测试对象的至少一个相同的空间排列而不是要扫描的对象，通过测试投影和迭代重建技术来确定滤波器，给定的布置导致用于断层图像的测试对象的投影数据的最佳滤波和反投影。此外，在给定的布置中扫描对象而不是测试对象，并且确定投影数据。最后，使用这些投影数据并确定滤波器来进行断层图像的重建。此外，还公开了用于执行该方法的断层摄影单元的实施例。

95. 发明申请

US20060198493A1 Shadow mask for an X-ray detector, computed tomography unit having a shadow mask, and a method for adjusting a shadow mask 失效
公开(公告)号：US20060198493A1
公开(公告)日：2006-09-07
申请号：US11365583
申请日：2006-03-02
申请人： Claus Pohan , Mario Reinwand , Karl Stierstorfer
发明人： Claus Pohan , Mario Reinwand , Karl Stierstorfer
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/06 , A61B6/032 , G01T1/295 , G21K1/02
摘要： A shadow mask and method for adjustment are disclosed. The shadow mask may be for an X-ray detector including detector elements, which may further be provided for a computed tomography unit, for example. The shadow mask has a mask plate with holes of which each is assigned a detector element. At least one adjusting hole of the mask plate includes enlarged dimensions in such a way that it is adapted to the dimensions of at least two detector elements. The adjusting hole serves for the method of adjusting the shadow mask over the X-ray detector. Measurement signals of the detector elements that are assigned to the at least one adjusting hole, are determined by using X-radiation. The shadow mask and the X-ray detector are adjusted relative to one another on the basis of a comparison of the measurement signals of the detector elements.

96. 发明申请

US20120219106A1 FILTER FOR AN X-RAY DEVICE, AND X-RAY DEVICE EMBODYING SUCH A FILTER 有权
标题翻译： X射线装置的过滤器和X射线装置
公开(公告)号：US20120219106A1
公开(公告)日：2012-08-30
申请号：US13369630
申请日：2012-02-09
申请人： Karl Stierstorfer
发明人： Karl Stierstorfer
IPC分类号： A61B6/03 , G21K3/00
CPC分类号： A61B6/032 , A61B6/4035 , G21K1/10
摘要： A filter for an x-ray device to shape an intensity profile of x-ray radiation emanating from an x-ray source of the device has a filter body made of a material that attenuates x-ray radiation. The filter body is designed with a propeller shape and has two blades connected by an axle of the filter. The filter body is rotatable around the axle, which is permeable to the x-ray radiation. The x-ray device embodies at least one such filter.
摘要翻译：用于形成从装置的x射线源发出的x射线辐射的强度分布的x射线装置的滤光器具有由能够衰减x射线辐射的材料制成的过滤体。过滤器主体设计有螺旋桨形状，并具有通过过滤器轴连接的两个叶片。过滤器主体可围绕轴旋转，该轴可透过X射线辐射。 x射线装置至少包含一个这样的过滤器。

97. 发明申请

US20120158811A1 Method For Transforming Input Data And Medical Device 有权
标题翻译：转换输入数据和医疗器械的方法
公开(公告)号：US20120158811A1
公开(公告)日：2012-06-21
申请号：US13328198
申请日：2011-12-16
申请人： Steffen Kappler , Edgar Kraft , Daniel Niederlöhner , Thomas Reichel , Karl Stierstorfer , Helmut Winkelmann
发明人： Steffen Kappler , Edgar Kraft , Daniel Niederlöhner , Thomas Reichel , Karl Stierstorfer , Helmut Winkelmann
IPC分类号： G06F17/14 , H05G1/08
CPC分类号： A61B6/563 , A61B6/03 , G06F19/00
摘要： A method is disclosed for transmitting measurement data from a transmitter system to a receiver system by way of a transmission link of a medical device. In an embodiment, the measurement data, as input data of a transformation method, is transformed to output values and, after transmission, back transformed again, the values of the input data lying between a maximum value and a minimum value and an assignment function being used for compression purposes, to allocate an output value to every value of the input data, a root function being used as the assignment function for at least some of the values.
摘要翻译：公开了一种通过医疗设备的传输链路将测量数据从发射机系统传输到接收机系统的方法。在一个实施例中，将作为变换方法的输入数据的测量数据变换为输出值，并且在传输之后再次变换为输入数据的值，其中，最大值和最小值之间的输入数据和分配函数为用于压缩目的，为输入数据的每个值分配输出值，根函数用作至少一些值的分配函数。

98. 发明授权

US08005287B2 Method of reconstructing CT image data 有权
标题翻译：重建CT图像数据的方法
公开(公告)号：US08005287B2
公开(公告)日：2011-08-23
申请号：US12457972
申请日：2009-06-26
申请人： Michael Grasruck , Karl Stierstorfer , Johan Sunnegårdh
发明人： Michael Grasruck , Karl Stierstorfer , Johan Sunnegårdh
IPC分类号： G06K9/00 , A61B6/00 , A61B5/05
CPC分类号： G06T11/006 , G06T2211/424
摘要： A method is disclosed for reconstructing CT image data. In at least one embodiment, the method includes providing measured CT projection data p based on the CT projection data p, reconstructing first CT image data fk=1, and on the basis of the first image data fk=1 iteratively generating k+1-th CT-image data according to the formula: fk+1=fk−α(Q(Pfk−p)+βR(fk)) until the standard ∥fk+1−fk∥2 is ≦n, with the reconstruction operator Q containing a noise weighting according to Q=B·Wstatist.·H. Aside from suppressing “cone” artifacts, the proposed method of at least one embodiment indicates a significant reduction in the image noise even after a few iterations.
摘要翻译：公开了一种重建CT图像数据的方法。在至少一个实施例中，该方法包括基于CT投影数据p提供测量的CT投影数据p，重建第一CT图像数据fk = 1，并且基于第一图像数据fk = 1迭代地生成k + 根据以下公式计算CT图像数据：fk + 1 = fk-α（Q（Pfk-p）+＆bgr; R（fk）），直到标准∥fk+ 1-fk‖2为＆nlE; n，重构算子Q根据Q = B·Wstatist包含噪声加权。除了抑制“锥形”伪像之外，至少一个实施例的所提出的方法指示即使在几次迭代之后图像噪声也显着降低。

99. 发明申请

US20100246918A1 ITERATIVE EXTRA-FOCAL RADIATION CORRECTION IN THE RECONSTRUCTION OF CT IMAGES 审中-公开
标题翻译：重建CT图像中的迭代超焦点辐射校正
公开(公告)号：US20100246918A1
公开(公告)日：2010-09-30
申请号：US12730664
申请日：2010-03-24
申请人： Steffen Kappler , Ernst-Peter Rührnschopf , Bernhard Scholz , Karl Stierstorfer
发明人： Steffen Kappler , Ernst-Peter Rührnschopf , Bernhard Scholz , Karl Stierstorfer
IPC分类号： G06K9/00 , H05G1/60
CPC分类号： A61B6/032 , A61B6/4014 , A61B6/4441 , A61B6/481 , A61B6/482 , A61B6/503 , A61B6/504 , A61B6/507 , A61B6/541 , G06T11/005 , 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 recorded during a rotating movement of a radiation source of a computed tomography system around the object under examination. The radiation source emits focal and extra-focal radiation. In at least one embodiment of the method, the image data is determined from the measurement data by use of an iterative algorithm. A variable is used in the iterative algorithm which contains a distribution of the extra-focal radiation.
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围绕被检查物体的旋转运动期间已经记录了测量数据。辐射源发出焦点和超焦距辐射。在该方法的至少一个实施例中，通过使用迭代算法从测量数据确定图像数据。在包含超焦距辐射分布的迭代算法中使用变量。

100. 发明授权

US07602881B2 Radiation detection unit for a computer tomograph 有权
标题翻译：用于计算机断层摄影的辐射检测单元
公开(公告)号：US07602881B2
公开(公告)日：2009-10-13
申请号：US11723489
申请日：2007-03-20
申请人： Claus Pohan , Karl Stierstorfer
发明人： Claus Pohan , Karl Stierstorfer
IPC分类号： A61B6/03
CPC分类号： G01T1/2985 , A61B6/032 , A61B6/06 , A61B6/483
摘要： A radiation detection unit is disclosed for a computer tomograph, and a computer tomograph having a radiation detection unit is also disclosed. In at least one embodiment, the radiation detection unit for a computer tomograph includes at least one scattered radiation sensor, set up and arranged to measure scattered radiation.
摘要翻译：公开了一种用于计算机断层摄影机的放射线检测单元，还公开了具有放射线检测单元的计算机断层摄影机。在至少一个实施例中，用于计算机断层摄影机的辐射检测单元包括至少一个散射辐射传感器，其设置和布置成测量散射辐射。

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