公开(公告)号：US07943907B2

公开(公告)日：2011-05-17

申请号：US12320160

申请日：2009-01-21

申请人： Björn-Oliver Eversmann ,  Björn Heismann ,  Debora Henseler ,  Silke Janssen ,  Daniel Niederlöhner

发明人： Björn-Oliver Eversmann ,  Björn Heismann ,  Debora Henseler ,  Silke Janssen ,  Daniel Niederlöhner

IPC分类号： G01J1/42

CPC分类号： G01T1/17

摘要： A method and a circuit arrangement are disclosed for determining radiation intensity using counting detectors or detector elements, in which x-ray radiation photons, which are either absorbed or absorbed in part, generate electrical signals, the pulse number and pulse height of which is correlated to an incident radiation intensity, and the radiation intensity is at least determined by counting the pulses. According to at least one embodiment of the invention, the signal pulses incident on at least one detector or detector element are detected simultaneously by at least one continuously operating pulse height discriminator and by at least one pulse height discriminator operating in a clocked fashion, with the number of incident signal pulses being determined with the aid of these two items of detection information.

摘要翻译： 公开了一种用于使用计数检测器或检测器元件确定辐射强度的方法和电路装置，其中被部分吸收或吸收的x射线辐射光子产生电信号，其脉冲数和脉冲高度相关 到入射辐射强度，并且至少通过对脉冲进行计数确定辐射强度。 根据本发明的至少一个实施例，入射到至少一个检测器或检测器元件上的信号脉冲由至少一个连续工作的脉冲高度鉴别器和至少一个以时钟方式操作的脉冲高度鉴别器同时检测， 借助这两项检测信息确定入射信号脉冲数。

公开(公告)号：US20090194703A1

公开(公告)日：2009-08-06

申请号：US12320160

申请日：2009-01-21

申请人： Bjorn-Oliver Eversmann ,  Bjorn Heismann ,  Debora Henseler ,  Silke Janssen ,  Daniel Niederlohner

发明人： Bjorn-Oliver Eversmann ,  Bjorn Heismann ,  Debora Henseler ,  Silke Janssen ,  Daniel Niederlohner

IPC分类号： G01T1/00 ,  H03K5/24

CPC分类号： G01T1/17

摘要： A method and a circuit arrangement are disclosed for determining radiation intensity using counting detectors or detector elements, in which x-ray radiation photons, which are either absorbed or absorbed in part, generate electrical signals, the pulse number and pulse height of which is correlated to an incident radiation intensity, and the radiation intensity is at least determined by counting the pulses. According to at least one embodiment of the invention, the signal pulses incident on at least one detector or detector element are detected simultaneously by at least one continuously operating pulse height discriminator and by at least one pulse height discriminator operating in a clocked fashion, with the number of incident signal pulses being determined with the aid of these two items of detection information.

摘要翻译： 公开了一种用于使用计数检测器或检测器元件确定辐射强度的方法和电路装置，其中被部分吸收或吸收的x射线辐射光子产生电信号，其脉冲数和脉冲高度相关 到入射辐射强度，并且至少通过对脉冲进行计数确定辐射强度。 根据本发明的至少一个实施例，入射到至少一个检测器或检测器元件上的信号脉冲由至少一个连续工作的脉冲高度鉴别器和至少一个以时钟方式操作的脉冲高度鉴别器同时检测， 借助这两项检测信息确定入射信号脉冲数。

公开(公告)号：US07796722B2

公开(公告)日：2010-09-14

申请号：US12219205

申请日：2008-07-17

申请人： Silke Janssen ,  Daniel Niederlöhner

发明人： Silke Janssen ,  Daniel Niederlöhner

IPC分类号： H05G1/60 ,  H05G1/64 ,  G01N23/06

CPC分类号： G01T1/2928

摘要： A quantum detector module for the quantitative and energy-resolved determination of quantum absorption events, a quantum detector, a method for determining quantum absorption events, a computer program product and a radiation detection device are disclosed. In at least one embodiment, the quantum detector module includes a multiplicity of detector pixels. In order to determine the quantum absorption events particularly precisely, in at least one embodiment it is provided that the detector pixels have at least two mutually different pixel apertures.

摘要翻译： 公开了用于量子吸收事件的定量和能量分辨测定的量子检测器模块，量子检测器，用于确定量子吸收事件的方法，计算机程序产品和放射线检测装置。 在至少一个实施例中，量子检测器模块包括多个检测器像素。 为了特别精确地确定量子吸收事件，在至少一个实施例中，检测器像素具有至少两个相互不同的像素孔径。

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。

公开(公告)号：US20120326049A1

公开(公告)日：2012-12-27

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： G01T1/18

CPC分类号： G01T1/243

摘要： A quantum-counting radiation detector is disclosed, in particular an x-ray detector. In at least one embodiment, the signals of the individual pixels and the signals of combined pixels are evaluated in parallel processing branches. It is then possible to combine the count results in an appropriate manner, to reduce the influence of unwanted interference effects for the respective application.

摘要翻译： 公开了一种量子计数辐射检测器，特别是X射线检测器。 在至少一个实施例中，以并行处理分支评估各个像素的信号和组合像素的信号。 然后可以以适当的方式组合计数结果，以减少对各个应用的不希望的干扰效应的影响。

公开(公告)号：US07268354B2

公开(公告)日：2007-09-11

申请号：US11006772

申请日：2004-12-08

申请人： Bjoern Heismann ,  Silke Janssen ,  Thomas Van Der Haar

发明人： Bjoern Heismann ,  Silke Janssen ,  Thomas Van Der Haar

IPC分类号： G01T1/00 ,  G01D18/00

CPC分类号： G01T1/171 ,  A61B6/032 ,  A61B6/583 ,  A61B6/585

摘要： A method is for operation of a counting radiation detector, in particular of a counting X-ray detector, with improved linearity, in which each detector element of the counting radiation detector supplies counting pulses at counting rates as a function of a number of radiation quanta which occur per unit time during operation. In the method, the counting rates which are supplied from each detector element or from subsections of the detector element are converted via a functional relationship to actual counting rates or are multiplied by correction factors which are dependent on the magnitude of the counting rates. The correction factors are determined in advance for the respective detector element or for the subsections of it, and any discrepancy (which occurs as a result of a dead time of the detector element, for example) in the counting rates is corrected from the actual number of radiation quanta which arrive per unit time. The method allows the linearity of counting radiation detectors to be improved, particularly at high radiation intensities, so that the linearity condition for X-ray CT systems is also satisfied.

摘要翻译： 一种用于操作具有改进的线性度的计数辐射检测器，特别是计数X射线检测器的方法，其中计数辐射检测器的每个检测器元件以计数速率提供作为辐射量子的数量的函数的计数脉冲 其在操作期间每单位时间发生。 在该方法中，从检测器元件或检测器元件的子部分提供的计数率通过功能关系转换为实际计数率，或乘以与计数率的大小有关的校正因子。 对于各个检测器元件或其子部分预先确定校正因子，并且从实际数量校正在计数率中的任何差异（例如，作为检测器元件的死区时间发生的差异） 的辐射量子单位时间到达。 该方法允许改善计数辐射检测器的线性度，特别是在高辐射强度下，使得X射线CT系统的线性度条件也得到满足。

公开(公告)号：US20050123090A1

公开(公告)日：2005-06-09

申请号：US11006772

申请日：2004-12-08

申请人： Bjoern Heismann ,  Silke Janssen ,  Thomas Haar

发明人： Bjoern Heismann ,  Silke Janssen ,  Thomas Haar

IPC分类号： G01T1/17 ,  A61B6/00 ,  A61B6/03 ,  G21K1/12

CPC分类号： G01T1/171 ,  A61B6/032 ,  A61B6/583 ,  A61B6/585

摘要： A method is for operation of a counting radiation detector, in particular of a counting X-ray detector, with improved linearity, in which each detector element of the counting radiation detector supplies counting pulses at counting rates as a function of a number of radiation quanta which occur per unit time during operation. In the method, the counting rates which are supplied from each detector element or from subsections of the detector element are converted via a functional relationship to actual counting rates or are multiplied by correction factors which are dependent on the magnitude of the counting rates. The correction factors are determined in advance for the respective detector element or for the subsections of it, and any discrepancy (which occurs as a result of a dead time of the detector element, for example) in the counting rates is corrected from the actual number of radiation quanta which arrive per unit time. The method allows the linearity of counting radiation detectors to be improved, particularly at high radiation intensities, so that the linearity condition for X-ray CT systems is also satisfied.

摘要翻译： 一种用于操作计数辐射检测器，特别是具有改进的线性度的计数X射线检测器的方法，其中计数辐射检测器的每个检测器元件以计数速率提供计数脉冲，作为辐射量子数的函数 其在操作期间每单位时间发生。 在该方法中，从检测器元件或检测器元件的子部分提供的计数率通过功能关系转换为实际计数率，或乘以与计数率的大小有关的校正因子。 对于各个检测器元件或其子部分预先确定校正因子，并且从实际数量校正在计数率中的任何差异（例如，作为检测器元件的死区时间发生的差异） 的辐射量子单位时间到达。 该方法允许改善计数辐射检测器的线性度，特别是在高辐射强度下，使得X射线CT系统的线性度条件也得到满足。

公开(公告)号：US20090122956A1

公开(公告)日：2009-05-14

申请号：US12219205

申请日：2008-07-17

申请人： Silke Janssen ,  Daniel Niederlohner

发明人： Silke Janssen ,  Daniel Niederlohner

IPC分类号： G01N23/06

CPC分类号： G01T1/2928

摘要： A quantum detector module for the quantitative and energy-resolved determination of quantum absorption events, a quantum detector, a method for determining quantum absorption events, a computer program product and a radiation detection device are disclosed. In at least one embodiment, the quantum detector module includes a multiplicity of detector pixels. In order to determine the quantum absorption events particularly precisely, in at least one embodiment it is provided that the detector pixels have at least two mutually different pixel apertures.

摘要翻译： 公开了用于量子吸收事件的定量和能量分辨测定的量子检测器模块，量子检测器，用于确定量子吸收事件的方法，计算机程序产品和放射线检测装置。 在至少一个实施例中，量子检测器模块包括多个检测器像素。 为了特别精确地确定量子吸收事件，在至少一个实施例中，检测器像素具有至少两个相互不同的像素孔径。

公开(公告)号：US07518116B2

公开(公告)日：2009-04-14

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： G01T1/36

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。

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。