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公开(公告)号：US08422627B2
公开(公告)日：2013-04-16
申请号：US12585579
申请日：2009-09-18
IPC分类号： A61B6/03
摘要： A method is disclosed for detecting X-ray radiation from an X-ray emitter. In at least one embodiment of the method, an electric pulse with a pulse amplitude characteristic of the energy of a quantum is generated when a quantum of the X-ray radiation impinges on a sensor, wherein a number of threshold energies are predetermined. When the pulse amplitude corresponding to the respective energy is exceeded, a signal is emitted each time the pulse amplitude corresponding to a respective threshold energy is exceeded. At least one embodiment of the method permits reliable and high-quality imaging, even in image regions with high X-ray quanta rates. To this end, at least one of the threshold energies is predetermined such that it is higher than the maximum energy of the X-ray spectrum emitted by the X-ray emitter.
摘要翻译： 公开了一种用于检测来自X射线发射器的X射线辐射的方法。 在该方法的至少一个实施例中，当X射线辐射的量子撞击到传感器上时，产生具有量子能量的脉冲振幅特性的电脉冲，其中预定了许多阈值能量。 当超过对应于各自能量的脉冲幅度时，每当超过对应于相应的阈值能量的脉冲幅度时，发出信号。 该方法的至少一个实施例允许可靠和高质量的成像，即使在具有高X射线量子速率的图像区域中。 为此，阈值能量中的至少一个是预定的，使得它高于由X射线发射器发射的X射线光谱的最大能量。
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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
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。
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3.发明申请ITERATIVE EXTRA-FOCAL RADIATION CORRECTION IN THE RECONSTRUCTION OF CT IMAGES 审中-公开重建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
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。
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公开(公告)号：US09078625B2
公开(公告)日：2015-07-14
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
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。
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公开(公告)号：US20100074397A1
公开(公告)日：2010-03-25
申请号：US12585579
申请日：2009-09-18
摘要： A method is disclosed for detecting X-ray radiation from an X-ray emitter. In at least one embodiment of the method, an electric pulse with a pulse amplitude characteristic of the energy of a quantum is generated when a quantum of the X-ray radiation impinges on a sensor, wherein a number of threshold energies are predetermined. When the pulse amplitude corresponding to the respective energy is exceeded, a signal is emitted each time the pulse amplitude corresponding to a respective threshold energy is exceeded. At least one embodiment of the method permits reliable and high-quality imaging, even in image regions with high X-ray quanta rates. To this end, at least one of the threshold energies is predetermined such that it is higher than the maximum energy of the X-ray spectrum emitted by the X-ray emitter.
摘要翻译： 公开了一种用于检测来自X射线发射器的X射线辐射的方法。 在该方法的至少一个实施例中，当X射线辐射的量子撞击到传感器上时，产生具有量子能量的脉冲幅度特性的电脉冲，其中预定数量的阈值能量。 当超过对应于各自能量的脉冲幅度时，每当超过对应于相应的阈值能量的脉冲幅度时，发出信号。 该方法的至少一个实施例允许可靠和高质量的成像，即使在具有高X射线量子速率的图像区域中。 为此，阈值能量中的至少一个是预定的，使得它高于由X射线发射器发射的X射线光谱的最大能量。
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6.发明授权Circuit arrangement for counting X-ray radiation X-ray quanta by way of quanta-counting detectors, and also an application-specific integrated circuit and an emitter-detector system 有权用于通过量子计数检测器计数X射线辐射X射线量子的电路装置，以及专用集成电路和发射极检测器系统公开(公告)号：US08450695B2
公开(公告)日：2013-05-28
申请号：US12953539
申请日：2010-11-24
申请人： Steffen Kappler , Karl Stierstorfer
发明人： Steffen Kappler , Karl Stierstorfer
IPC分类号： G01T1/24
CPC分类号： G01T1/17
摘要： In at least one embodiment, a circuit arrangement of a quanta-counting detector with a multiplicity of detector elements is disclosed, wherein the X-ray quanta registered in each detector element generate a signal profile. In at least one embodiment, the circuit arrangement, in each detector element, includes: at least one first comparator with a first energy threshold lying in the energy range of the measured X-ray quanta and at least one second comparator with a second energy threshold lying above the energy range of the measured X-ray quanta, the at least one first and second comparators being connected to the detector element. Further, the at least two comparators have a logical interconnection, wherein at least a first comparator and a second comparator are connected to the inputs of an XOR gate, and each XOR gate connected to a first comparator is connected to precisely one edge-sensitive counter.
摘要翻译： 在至少一个实施例中，公开了具有多个检测器元件的量子计数检测器的电路装置，其中登记在每个检测器元件中的X射线量子产生信号轮廓。 在至少一个实施例中，每个检测器元件中的电路装置包括：具有第一能量阈值的至少一个第一比较器，其位于测量的X射线量子的能量范围内，并且至少一个第二比较器具有第二能量阈值 位于测量的X射线量子的能量范围之上，所述至少一个第一和第二比较器连接到检测器元件。 此外，至少两个比较器具有逻辑互连，其中至少第一比较器和第二比较器连接到异或门的输入，并且连接到第一比较器的每个异或门精确连接到一个边缘敏感计数器 。
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7.发明申请CIRCUIT ARRANGEMENT FOR COUNTING X-RAY RADIATION X-RAY QUANTA BY WAY OF QUANTA-COUNTING DETECTORS, AND ALSO AN APPLICATION-SPECIFIC INTEGRATED CIRCUIT AND AN EMITTER-DETECTOR SYSTEM 有权通过计数检测器的方式计算X射线辐射X射线量子的电路布置，还有应用特定的集成电路和发射检测器系统公开(公告)号：US20110121191A1
公开(公告)日：2011-05-26
申请号：US12953539
申请日：2010-11-24
申请人： Steffen KAPPLER , Karl Stierstorfer
发明人： Steffen KAPPLER , Karl Stierstorfer
IPC分类号： G01T1/24
CPC分类号： G01T1/17
摘要： A circuit arrangement of a quanta-counting detector with a multiplicity of detector elements is disclosed, wherein the X-ray quanta registered in each detector element generate a signal profile. In at least one embodiment, the circuit arrangement, in each detector element, includes: at least one first comparator with a first energy threshold lying in the energy range of the measured X-ray quanta and at least one second comparator with a second energy threshold lying above the energy range of the measured X-ray quanta, the at least one first and second comparators being connected to the detector element. Further, the at least two comparators have a logical interconnection, wherein at least a first comparator and a second comparator are connected to the inputs of an XOR gate, and each XOR gate connected to a first comparator is connected to precisely one edge-sensitive counter. Further, in at least one embodiment, an application-specific integrated circuit (ASIC) and an emitter-detector system of an X-ray CT system, including at least one circuit arrangement, are disclosed.
摘要翻译： 公开了具有多个检测器元件的量子计数检测器的电路布置，其中登记在每个检测器元件中的X射线量子产生信号轮廓。 在至少一个实施例中，每个检测器元件中的电路装置包括：具有第一能量阈值的至少一个第一比较器，其位于测量的X射线量子的能量范围内，并且至少一个第二比较器具有第二能量阈值 位于测量的X射线量子的能量范围之上，所述至少一个第一和第二比较器连接到检测器元件。 此外，至少两个比较器具有逻辑互连，其中至少第一比较器和第二比较器连接到异或门的输入，并且连接到第一比较器的每个异或门精确连接到一个边缘敏感计数器 。 此外，在至少一个实施例中，公开了包括至少一个电路装置的X射线CT系统的专用集成电路（ASIC）和发射极 - 检测器系统。
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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
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。
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9.发明申请METHOD AND COMPUTER SYSTEM FOR SCATTERED BEAM CORRECTION IN A MULTI-SOURCE CT 有权用于多源CT中散射光束校正的方法和计算机系统公开(公告)号：US20120213424A1
公开(公告)日：2012-08-23
申请号：US13401879
申请日：2012-02-22
CPC分类号： G01N23/046 , A61B6/032 , A61B6/06 , A61B6/4014 , A61B6/4291 , A61B6/5205 , A61B6/5282 , G01N2223/419 , G01N2223/612 , G06T11/005 , G06T2211/424
摘要： A method and a computer system are disclosed for scattered beam correction in a CT examination of an object in a multi source CT. In at least one embodiment, the method includes generating original projection data records; reconstruction of the object with the original projection data records of at least one detector; determining the scattered radiation generated by each emitter exclusively in the direction of the original beams of the at least one other emitter relative to its opposing detector; generating corrected projection data records by removing the calculated scattered radiation from the original projection data records; reconstruction of the object with the corrected projection data records, and implementing a further iteration of the method when determining the scattered radiation or issuing the reconstruction result if at least one predetermined abort criterion applies.
摘要翻译： 公开了一种用于在多源CT中的对象的CT检查中的散射束校正的方法和计算机系统。 在至少一个实施例中，该方法包括生成原始投影数据记录; 用至少一个检测器的原始投影数据记录重建对象; 确定由每个发射器产生的散射辐射源专用于至少一个其它发射器的原始光束相对于其相对的检测器的方向; 通过从原始投影数据记录中去除计算的散射辐射来产生校正的投影数据记录; 使用校正的投影数据记录重建对象，并且如果应用至少一个预定中止标准，则在确定散射辐射或发出重建结果时，执行该方法的进一步迭代。
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10.发明授权Method for post-processing raw detector signals, a computer program product, a computer readible medium and a radiation detection device 有权用于后处理原始检测器信号的方法，计算机程序产品，计算机可读介质和放射线检测装置公开(公告)号：US08121251B2
公开(公告)日：2012-02-21
申请号：US12292372
申请日：2008-11-18
申请人： Rainer Raupach , Karl Stierstorfer
发明人： Rainer Raupach , Karl Stierstorfer
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/037 , A61B6/5205 , A61B6/583 , A61B6/585 , G01T1/2985 , G01T7/005
摘要： Methods for post-processing raw detector signals of an x-ray or gamma detector are disclosed. According to at least one embodiment of the invention, raw detector signals are filtered, an associated filtered signal is determined at least for a subset of the raw detector signals, and those filtered signals whose signal value is less than zero are then respectively replaced by a signal value greater than zero.
摘要翻译： 公开了用于后处理x射线或γ检测器的原始检测器信号的方法。 根据本发明的至少一个实施例，对原始检测器信号进行滤波，至少对于原始检测器信号的子集确定相关联的滤波信号，并且那些信号值小于零的那些滤波信号分别被替换为 信号值大于零。
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