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1.发明授权公开(公告)号：US08259898B2
公开(公告)日：2012-09-04
申请号：US12911335
申请日：2010-10-25
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B5/0452 , A61B6/503
摘要： A method and a CT system are disclosed for predicting specific cardiac cycle phases within the scope of a CT examination, wherein signal profiles of the heart are continuously recorded during the examination over a plurality of cardiac cycles, wherein times of successive cycle positions with the same characteristics are determined with the aid of the signal profiles and the successive cycle lengths of the cardiac cycles are determined with the aid of the determined times, wherein typical patterns in successive cycle lengths over a first number of past and successive cardiac cycles are sought after and a current or future cycle length is determined by recording cycle patterns in a second, smaller number of cycle lengths including their typical successive cycle length within the first number of current past cycle lengths, and predicting, using probabilistic methods, the cycle length that follows the last determined cycle pattern on the basis of the cycle patterns currently determined during the CT examination.
摘要翻译： 公开了一种用于预测CT检查范围内的特定心脏周期相位的方法和CT系统，其中心脏的信号分布在检查期间在多个心动周期中连续记录，其中相同周期位置的时间相同 借助于确定的时间来确定心律周期的连续循环长度，其中在第一数量的过去和连续的心动周期之后寻求连续循环长度中的典型模式，并且 通过以第二较小数量的循环长度记录循环模式来确定当前或将来循环长度，包括其在当前过去循环长度的第一数量内的典型连续循环长度，以及使用概率方法预测随后的周期长度 根据当前确定的周期模式，最后确定的周期模式 进行CT检查。
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2.发明申请METHOD FOR PREDICTING SPECIFIC CYCLE PHASES OF A BEATING HEART IN A PATIENT WITHIN THE SCOPE OF A CT EXAMINATION AND CT SYSTEM 有权在CT检查和CT系统范围内预测患者心脏心脏特异性周期的方法公开(公告)号：US20110096893A1
公开(公告)日：2011-04-28
申请号：US12911335
申请日：2010-10-25
CPC分类号： A61B6/032 , A61B5/0452 , A61B6/503
摘要： A method and a CT system are disclosed for predicting specific cardiac cycle phases within the scope of a CT examination, wherein signal profiles of the heart are continuously recorded during the examination over a plurality of cardiac cycles, wherein times of successive cycle positions with the same characteristics are determined with the aid of the signal profiles and the successive cycle lengths of the cardiac cycles are determined with the aid of the determined times, wherein typical patterns in successive cycle lengths over a first number of past and successive cardiac cycles are sought after and a current or future cycle length is determined by recording cycle patterns in a second, smaller number of cycle lengths including their typical successive cycle length within the first number of current past cycle lengths, and predicting, using probabilistic methods, the cycle length that follows the last determined cycle pattern on the basis of the cycle patterns currently determined during the CT examination.
摘要翻译： 公开了一种用于预测CT检查范围内的特定心脏周期相位的方法和CT系统，其中心脏的信号分布在检查期间在多个心动周期中连续记录，其中相同周期位置的时间相同 借助于确定的时间来确定心律周期的连续循环长度，其中在第一数量的过去和连续的心动周期之后寻求连续循环长度中的典型模式，并且 通过以第二较小数量的循环长度记录循环模式来确定当前或将来循环长度，包括其在当前过去循环长度的第一数量内的典型连续循环长度，以及使用概率方法预测随后的周期长度 根据当前确定的周期模式，最后确定的周期模式 进行CT检查。
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公开(公告)号：US09480444B2
公开(公告)日：2016-11-01
申请号：US14026236
申请日：2013-09-13
申请人： Steffen Kappler
发明人： Steffen Kappler
CPC分类号： A61B6/4241 , A61B6/032 , A61B6/542 , G01N23/046 , G06T7/0012
摘要： An x-ray system, such as a computed tomography system, has an x-ray source, a projection detector arrangement associated with the x-ray source for the acquisition of projection data of an examination subject, and a monitor detector that measures current dose measurement data of the x-ray radiation. The monitor detector is designed and arranged to detect a portion of the x-ray radiation that does not travel through the examination subject. The monitor detector is formed as an energy-resolving detector. Furthermore, a method for the acquisition of projection data of an examination subject a method to generate image data make use of such an x-ray system.
摘要翻译： 诸如计算机断层摄影系统的x射线系统具有x射线源，与x射线源相关联的用于获取检查对象的投影数据的投影检测器装置，以及测量电流剂量的监视器检测器 x射线辐射的测量数据。 监视器检测器被设计和布置成检测不穿过检查对象的X射线辐射的一部分。 监视器检测器形成为能量分辨检测器。 此外，用于获取检查对象的投影数据的方法用于生成图像数据的方法使用这样的X射线系统。
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4.发明授权Method for correcting detector data of an X-ray detector and X-ray recording system 有权用于校正X射线检测器和X射线记录系统的检测器数据的方法公开(公告)号：US08915647B2
公开(公告)日：2014-12-23
申请号：US13426983
申请日：2012-03-22
申请人： Steffen Kappler , Johannes Kippes , Edgar Kraft , Daniel Niederlöhner , Thomas Reichel , Christian Schröter , Thomas Von Der Haar
发明人： Steffen Kappler , Johannes Kippes , Edgar Kraft , Daniel Niederlöhner , Thomas Reichel , Christian Schröter , Thomas Von Der Haar
摘要： In a method, with a current measurement, the history of the radiation exposure of the X-ray detector is taken into account with respect to the overall X-ray detector or subareas of the X-ray detector, in respect of a reduction in the measurement sensitivity produced as a result and a recovery of the reduction in the measurement sensitivity, and the determined measuring signal is corrected with a correction factor which is dependent on the history of the radiation exposure. Furthermore, an X-ray recording system includes a detector which includes a plurality of detector elements, which are read out in groups channel by channel and a read-out apparatus with computer-assisted device for correcting read-out detector data prior to a further processing of the detector data to form projective or tomographic images.
摘要翻译： 在一种方法中，通过电流测量，关于X射线检测器的整个X射线检测器或子区域考虑X射线检测器的辐射暴露的历史，关于减少 作为结果产生的测量灵敏度和测量灵敏度的降低的恢复，并且所确定的测量信号用取决于辐射暴露的历史的校正因子来校正。 此外，X射线记录系统包括检测器，其包括多个检测器元件，其逐个通道分组读出;以及读出装置，具有计算机辅助装置，用于在进一步检测之前校正读出检测器数据 处理检测器数据以形成投影或断层图像。
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5.发明授权Method for homogenization of the threshold values of a multi-channel, quanta-counting radiation detector 有权用于均衡多通道量子计数辐射探测器的阈值的方法公开(公告)号：US08716652B2
公开(公告)日：2014-05-06
申请号：US13561690
申请日：2012-07-30
摘要： A method is disclosed for homogenization of threshold values of a multichannel, quanta-counting radiation detector. In an embodiment of the method empty measurements are carried out with the detector at different spectral compositions of the radiation with different settings of threshold values of the comparators. For each channel of which the comparators is to be set to the same energy threshold, an adapted threshold value is determined for this energy threshold from the empty measurement, at which a variation of the normalized count rate of the channel is minimized over the different spectral compositions of the radiation. This avoids problems in the further processing of the measurement data of the detector, which can occur during alterations of the spectrum.
摘要翻译： 公开了一种用于均衡多通道量子计数辐射检测器的阈值的方法。 在该方法的实施例中，利用不同比较器阈值设置的辐射的不同光谱组成的检测器进行空测量。 对于其中将比较器设置为相同能量阈值的每个通道，从空的测量中确定适用于该能量阈值的阈值，在该测量中，通道的归一化计数率的变化在不同频谱上被最小化 辐射的组成。 这样可以避免进一步处理检测器的测量数据的问题，这可能在频谱变化期间发生。
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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：US08350222B2
公开(公告)日：2013-01-08
申请号：US12939036
申请日：2010-11-03
IPC分类号： G01T1/164
CPC分类号： A61B6/5235 , A61B6/032 , A61B6/037 , A61B6/4241 , A61B6/4258 , A61B6/4266
摘要： An imaging system includes interleaved emission detectors and transmission detectors. Emission detectors and transmission detectors can be interleaved along the axis of relative patient motion. Emission detectors and transmission detectors can be interleaved orthogonal to the axis of relative patient motion. Emission detectors can be single photon emission computed tomography detectors and the transmission detectors can be x-ray computed tomography detectors.
摘要翻译： 成像系统包括交错发射检测器和传输检测器。 发射检测器和传输检测器可以沿着相对患者运动的轴线交错。 发射检测器和传输检测器可以与相对患者运动的轴线正交交错。 发射检测器可以是单光子发射计算机断层摄影检测器，并且传输检测器可以是X射线计算机断层摄影检测器。
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8.发明申请METHOD FOR CORRECTING COUNT RATE DRIFT IN A QUANTUM-COUNTING DETECTOR, AN X-RAY SYSTEM WITH A QUANTUM-COUNTING DETECTOR AND A CIRCUIT ARRANGEMENT FOR A QUANTUM-COUNTING DETECTOR 有权用于校正量子计数检测器中的计数速率的方法，具有量子计数检测器的X射线系统和用于量子计数检测器的电路布置公开(公告)号：US20120305757A1
公开(公告)日：2012-12-06
申请号：US13483326
申请日：2012-05-30
申请人： Steffen Kappler
发明人： Steffen Kappler
IPC分类号： G01T1/00
摘要： A method, a circuit arrangement and an X-ray system, in particular a CT system, are disclosed wherein, in order to correct the count rate drift of a detector for ionizing radiation having quantum-counting detector elements which include a combination of at least two counters with significantly different energy thresholds, and on the basis of previously determined functional dependencies of count rates on one another and using at least one of the counters per detector element as the reference, the count rates of the respective other counters with different energy thresholds are corrected.
摘要翻译： 公开了一种方法，电路装置和X射线系统，特别是CT系统，其中为了校正具有量子计数检测器元件的电离辐射的检测器的计数速率漂移，其包括至少 两个计数器具有明显不同的能量阈值，并且基于先前确定的计数率彼此之间的功能依赖性并且使用每个检测器元件的至少一个计数器作为参考，具有不同能量阈值的各个其他计数器的计数率 被纠正。
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公开(公告)号：US10210632B2
公开(公告)日：2019-02-19
申请号：US15091658
申请日：2016-04-06
摘要： A method for reconstructing image data during CT imaging is described. In the method, a plurality of independent data records of projection measured data are captured. A combined data record is then determined based on the captured data records. In addition, morphological information is determined based on the combined data record. A target data record is also determined based on the captured independent data records. A target image data record is reconstructed based on the target data record and the determined morphological information. An image data determination facility and a computed tomography system are also described.
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公开(公告)号：US09057791B2
公开(公告)日：2015-06-16
申请号：US13526641
申请日：2012-06-19
申请人： Thilo Hannemann , Silke Janssen , Steffen Kappler , Edgar Kraft , Daniel Niederlöhner , Mario Reinwand
发明人： Thilo Hannemann , Silke Janssen , Steffen Kappler , Edgar Kraft , Daniel Niederlöhner , Mario Reinwand
IPC分类号： G01T1/24
CPC分类号： G01T1/243
摘要： A quantum-counting radiation detector in which signals of individual pixels and signals of combined pixels are evaluated in parallel processing branches and count results are combined in an appropriate manner, thereby reducing the influence of unwanted interference effects for the respective application.
摘要翻译： 在并行处理分支中计算各个像素和合成像素的信号的量子计数辐射检测器，并以适当的方式组合计数结果，从而减少对各个应用的不希望的干扰效应的影响。
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