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：US07362844B2

公开(公告)日：2008-04-22

申请号：US11203290

申请日：2005-08-15

申请人： Bjoern Heismann ,  Silke Janssen

发明人： Bjoern Heismann ,  Silke Janssen

IPC分类号： H05G1/60

CPC分类号： A61B6/032 ,  Y10S378/901

摘要： A tomography appliance and method for a tomography appliance make it possible to calculate, in a simple and efficient manner, detector-element-related coefficients of an intensity function dependent on the detector output signal and to calculate the X-ray-emitter-related coefficients of an intensity function dependent on an X-ray emitter input value. This is done on the basis of measured detector output signals and at least one X-ray emitter input value, such that the intensity which acts precisely on the respective detector element can be determined from X-ray radiation originating from the X-ray emitter.

摘要翻译： 层析成像装置的断层摄影装置和方法使得可以以简单有效的方式计算取决于检测器输出信号的强度函数的检测器元件相关系数，并计算X射线 - 发射体相关系数 的强度函数取决于X射线发射体输入值。 这是基于测量的检测器输出信号和至少一个X射线发射器输入值进行的，使得可以从源自X射线发射器的X射线辐射确定精确地对各个检测器元件施加的强度。

公开(公告)号：US20060034418A1

公开(公告)日：2006-02-16

申请号：US11203290

申请日：2005-08-15

申请人： Bjoern Heismann ,  Silke Janssen

发明人： Bjoern Heismann ,  Silke Janssen

IPC分类号： H05G1/60 ,  A61B6/00

CPC分类号： A61B6/032 ,  Y10S378/901

摘要： A tomography appliance and method for a tomography appliance make it possible to calculate, in a simple and efficient manner, detector-element-related coefficients of an intensity function dependent on the detector output signal and to calculate the X-ray-emitter-related coefficients of an intensity function dependent on an X-ray emitter input value. This is done on the basis of measured detector output signals and at least one X-ray emitter input value, such that the intensity which acts precisely on the respective detector element can be determined from X-ray radiation originating from the X-ray emitter.

摘要翻译： 层析成像装置的断层摄影装置和方法使得可以以简单有效的方式计算取决于检测器输出信号的强度函数的检测器元件相关系数，并计算X射线 - 发射体相关系数 的强度函数取决于X射线发射体输入值。 这是基于测量的检测器输出信号和至少一个X射线发射器输入值进行的，使得可以从源自X射线发射器的X射线辐射确定精确地对各个检测器元件施加的强度。

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：US09829553B2

公开(公告)日：2017-11-28

申请号：US13857311

申请日：2013-04-05

申请人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

发明人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

IPC分类号： G01R33/54 ,  G01R33/48 ,  G01R33/561

CPC分类号： G01R33/4806 ,  G01R33/4816 ,  G01R33/54 ,  G01R33/5619

摘要： In a method and a magnetic resonance (MR) system for functional MR imaging of a predetermined volume segment of THE brain of a living examination subject, an RF excitation pulse is radiated into the subject and at least one magnetic field gradient is activated, and MR data of the predetermined volume segment is acquired beginning at a predetermined echo time after the RF excitation pulse. The echo time is in a time period of 10 μs to 1000 μs.

公开(公告)号：US20130267827A1

公开(公告)日：2013-10-10

申请号：US13857322

申请日：2013-04-05

申请人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

发明人： David Grodzki ,  Bjoern Heismann ,  Jeanette Lenger ,  Sebastian Schmidt

IPC分类号： A61B5/04 ,  A61B5/0476 ,  A61B5/00

CPC分类号： A61B5/04012 ,  A61B5/0042 ,  A61B5/0476 ,  A61B5/048 ,  A61B5/055 ,  A61B5/7264

摘要： In a method and a magnetic resonance (MR) system for functional MR imaging of a predetermined volume segment of the brain of a living examination subject, MR data of the predetermined volume segment are acquired, EEG data of the examination subject are acquired with the acquisition of the EEG data taking place simultaneously with the acquisition of the MR data, and the MR data automatically evaluated dependent on the acquired EEG data.

摘要翻译： 在用于生活检查对象的脑的预定体积段的功能MR成像的方法和磁共振（MR）系统中，获取预定体积段的MR数据，通过采集获取检查对象的EEG数据 的EEG数据与采集MR数据同时发生，MR数据根据所获得的EEG数据自动评估。

公开(公告)号：US20110255752A1

公开(公告)日：2011-10-20

申请号：US13086596

申请日：2011-04-14

申请人： Bjoern Heismann

发明人： Bjoern Heismann

IPC分类号： G06K9/00

CPC分类号： G06F19/321 ,  G06T7/11 ,  G06T2207/10072 ,  G06T2207/20104 ,  G06T2207/30004

摘要： In an evaluation method and device for evaluation of medical image data, a pre-selection step is implemented for a manual pre-selection of the medical image data and a selection step is implemented for manual selection of relevant image regions in the pre-selected medical image data. Information for the selection of relevant image regions is provided in a manner that is at least partially computer-controlled in the preparation step.

摘要翻译： 在用于医学图像数据的评价的评价方法和装置中，实施用于手动预选医学图像数据的预选步骤，并且执行选择步骤，用于手动选择预选医疗中的相关图像区域 图像数据。 用于选择相关图像区域的信息以在准备步骤中被至少部分计算机控制的方式提供。

公开(公告)号：US20090039562A1

公开(公告)日：2009-02-12

申请号：US12285055

申请日：2008-09-29

申请人： Andreas Freund ,  Bjoern Heismann ,  Harald Maerkl ,  Martin Schaefer ,  Thomas Von Der Haar

发明人： Andreas Freund ,  Bjoern Heismann ,  Harald Maerkl ,  Martin Schaefer ,  Thomas Von Der Haar

IPC分类号： B29C35/08

CPC分类号： G21K1/025 ,  A61B6/4258

摘要： A method is proposed for producing an anti-scatter grid or collimator for a radiation type, which is formed from at least one base body of prescribable geometry having transmission channels or slits for primary radiation of the radiation type which extend between two opposite surfaces of the base body. The base body is formed from a structural material that strongly absorbs the radiation type, either using the injection molding technique or by way of the technique of stereolithography. The method can be used to produce an anti-scatter grid or collimator with high accuracy and with the aid of only a few steps.

摘要翻译： 提出了一种用于制造用于辐射型的防散射栅格或准直器的方法，该方法由至少一个具有规定几何形状的基体形成，其具有用于在辐射类型的两个相对表面之间延伸的辐射类型的主辐射的传输通道或狭缝 基体 该基体由强力吸收辐射型的结构材料形成，使用注塑技术或通过立体光刻技术。 该方法可用于以高精度和仅仅几步的帮助产生抗散射网格或准直仪。

公开(公告)号：US20050098735A1

公开(公告)日：2005-05-12

申请号：US10981464

申请日：2004-11-05

申请人： Bjoern Heismann

发明人： Bjoern Heismann

IPC分类号： G01T1/24 ,  A61B6/03 ,  G01N23/04 ,  G01N23/06 ,  G01T1/161 ,  G01T1/164 ,  G01T1/166 ,  G01T1/17 ,  G01T1/29 ,  H01L31/09

CPC分类号： G01T1/1611 ,  A61B6/037 ,  G01T1/17 ,  G01T1/2985

摘要： A detector module is for CT and/or PET and/or SPECT examinations, and includes a number of measuring channels. Each measuring channel includes a direct converter for directly converting incident measuring radiation into analog electric signals, a pulse generator connected to the direct converter, for generating counting pulses as a function of the received electric signals, and a counting device that counts the received counting pulses over a prescribable time period and outputs the result. Arranged between the counting device and the pulse generator is an externally drivable changeover unit that can be used to switch over between the counting device and an event detector that registers and outputs for each received counting pulse the time and the associated measuring channel or an item of location information assigned to this measuring channel. The present detector module is of simple design.

摘要翻译： 检测器模块用于CT和/或PET和/或SPECT检查，并且包括多个测量通道。 每个测量通道包括用于将入射测量辐射直接转换成模拟电信号的直接转换器，连接到直接转换器的脉冲发生器，用于产生作为接收到的电信号的函数的计数脉冲;以及计数装置，对接收的计数脉冲进行计数 在规定的时间段内输出结果。 在计数装置和脉冲发生器之间布置的是外部驱动的转换单元，其可以用于在计数装置和事件检测器之间切换，所述事件检测器为每个接收的计数脉冲注册和输出时间和相关的测量通道或一个 分配给该测量通道的位置信息。 本检测器模块设计简单。

公开(公告)号：US09057770B2

公开(公告)日：2015-06-16

申请号：US13537413

申请日：2012-06-29

申请人： Bjoern Heismann ,  Sebastian Schmidt

发明人： Bjoern Heismann ,  Sebastian Schmidt

IPC分类号： G01V3/00 ,  G01R33/48 ,  G01R33/56

CPC分类号： G01R33/4824 ,  G01R33/48 ,  G01R33/4816 ,  G01R33/56

摘要： In a method for recording a magnetic resonance image with a magnetic resonance device, in which several projection image data records are recorded in succession with different gradient orientations, from which, through back projection, the magnetic resonance image is reconstructed, the recording of a projection data record in a recording time frame proceeds with a temporal frequency modulated excitation pulse of a pulse duration, wherein, through the frequency modulation of the excitation pulse, all spins to be recorded within the scope of the projection data record are excited in a temporal sequence and wherein the frequency modulation function describing the frequency modulation during the pulse duration exhibits at least one maximum and/or at least one minimum. During the excitation duration, a time-resolved reception signal is detected. The projection data record is determined from the reception signal through evaluation.

摘要翻译： 在用磁共振装置记录磁共振图像的方法中，其中以不同的梯度取向连续地记录多个投影图像数据记录，通过背投影重建磁共振图像，记录投影 在记录时间帧中的数据记录是以脉冲持续时间的时间频率调制激励脉冲进行的，其中，通过激励脉冲的频率调制，将在时间序列中激发要记录在投影数据记录范围内的所有旋转 并且其中描述所述脉冲持续时间期间的频率调制的所述频率调制函数具有至少一个最大值和/或至少一个最小值。 在激励期间，检测时间分辨的接收信号。 通过评估从接收信号确定投影数据记录。