公开(公告)号：US08290116B2

公开(公告)日：2012-10-16

申请号：US13063486

申请日：2009-09-09

Applicant: Jens Wiegert ,  Matthias Bertram

Inventor： Jens Wiegert ,  Matthias Bertram

IPC: A61B6/00 ,  G01D18/00

CPC classification number: G06T11/005 ,  A61B6/027 ,  A61B6/4291

Abstract: The present invention relates to an imaging apparatus for generating an image of a region of interest of an object. The imaging apparatus comprises a radiation source (2) for emitting radiation (4) and a detector (6) for measuring the radiation (4) after having traversed the region of interest and for generating measured detection values depending on the measured radiation (4). The imaging apparatus further comprises an attenuation element for attenuating the radiation (4) before traversing the region of interest and an attenuation element scatter values providing unit (12) for providing attenuation element scatter values, which depend on scattering of the radiation (4) caused by the attenuation element. A detection values correction unit (17) corrects the measured detection values based on the provided attenuation element scatter values, and a reconstruction unit (18) reconstructs an image of the region of interest from the corrected detection values.

Abstract translation: 本发明涉及一种用于生成对象的感兴趣区域的图像的成像装置。 成像设备包括用于发射辐射的辐射源（2）和用于在穿过感兴趣区域之后测量辐射（4）的检测器（6），并且用于根据所测量的辐射（4）产生测量的检测值， 。 成像装置还包括用于在穿过感兴趣区域之前衰减辐射（4）的衰减元件和用于提供依赖于辐射（4）的散射的衰减元件散射值的衰减元件散射值提供单元（12） 通过衰减元件。 检测值校正单元（17）基于所提供的衰减元件散射值来校正测量的检测值，并且重建单元（18）从校正的检测值重建感兴趣区域的图像。

公开(公告)号：US20110110573A1

公开(公告)日：2011-05-12

申请号：US13000030

申请日：2009-06-23

Applicant: Jens Wiegert ,  Matthias Bertram

Inventor： Jens Wiegert ,  Matthias Bertram

IPC: G06K9/00 ,  G06K9/34

CPC classification number: G06T11/005 ,  A61B6/032 ,  A61B6/542

Abstract: The present invention relates to an image generation device for generating an image from measured data, wherein image quality is optimized for a region of interest and to an imaging system comprising this image generation device. The image generation device comprises a noise determination unit for determining a distribution of noise in a projection domain of the region of interest, and a dose control unit (32) for determining a dose profile for a radiation source (2) of said image generation device based on said determined distribution of noise by using a noise propagation algorithm. Thereby, signal-to-noise ratio of a reconstructed volume can be improved and is not sensitively dependent on a selected region of interest.

Abstract translation: 本发明涉及一种用于根据测量数据产生图像的图像产生装置，其中对于感兴趣的区域和包括该图像生成装置的成像系统优化图像质量。 该图像生成装置包括用于确定感兴趣区域的投影域中的噪声分布的噪声确定单元，以及用于确定所述图像生成装置的辐射源（2）的剂量分布的剂量控制单元（32） 基于所述确定的噪声分布，使用噪声传播算法。 因此，可以改善重建体积的信噪比并且不敏感地依赖于所选择的感兴趣区域。

公开(公告)号：US20110060566A1

公开(公告)日：2011-03-10

申请号：US12991708

申请日：2009-05-13

Applicant: Matthias Bertram ,  Jens Wiegert ,  Steffen Gunther Hohmann

Inventor： Matthias Bertram ,  Jens Wiegert ,  Steffen Gunther Hohmann

IPC: G06F17/10

CPC classification number: G06T11/005

Abstract: A method and apparatus of image reconstruction correcting for photon scatter is provided. A direct physical measurement of scattered photons is used in conjunction with a physical model of the photon scattering process to make the corrections.

Abstract translation: 提供了一种用于光子散射的图像重建校正方法和装置。 散射光子的直接物理测量与光子散射过程的物理模型结合使用以进行校正。

公开(公告)号：US20100119139A1

公开(公告)日：2010-05-13

申请号：US12625600

申请日：2009-11-25

Applicant: Matthias Bertram ,  Jens Wiegert ,  Steffen G. Wiesner

Inventor： Matthias Bertram ,  Jens Wiegert ,  Steffen G. Wiesner

IPC: G06K9/62

CPC classification number: G06T11/005

Abstract: A method includes generating a plurality of scatter distributions based on geometric models having different object to detector distances, determining an imaged object to detector distance, and identifying a scatter distribution of the plurality of scatter distributions having a object to detector distance that corresponds to the imaged object to detector distance. The method also includes employing the identified scatter distribution to scatter correct projection data corresponding to the imaged object. Another method includes generating an estimate of wedge scatter by propagating a predetermined wedge scatter profile through an intermediate reconstruction of an object; and employing the estimate to wedge scatter correct the projection data.

Abstract translation: 一种方法包括基于具有不同对象与检测器距离的几何模型来生成多个散射分布，将成像对象确定为检测器距离，以及识别具有对象的多个散射分布的散射分布与检测器距离对应于被成像 对象到检测器距离。 该方法还包括使用所识别的散布分布散布对应于成像对象的正确投影数据。 另一种方法包括通过传播预定的楔形散射剖面通过对象的中间重建来产生楔散射的估计; 并使用估计来楔形散射校正投影数据。

公开(公告)号：US20120230470A1

公开(公告)日：2012-09-13

申请号：US13501257

申请日：2010-09-16

Applicant: Matthias Bertram ,  Jens Wiegert ,  Kevin M. Brown

Inventor： Matthias Bertram ,  Jens Wiegert ,  Kevin M. Brown

IPC: H05G1/64

CPC classification number: G01T1/02 ,  A61B6/032 ,  A61B6/544 ,  G06F19/00

Abstract: A method includes generating, via a dose estimator (208), a dose map indicative of an estimated dose deposited for a subject based on acquisition protocol parameter values of an acquisition protocol of an imaging system (100), and generating, via a noise estimator (210), at least one of a noise map indicative of an estimated image noise based on the acquisition protocol parameter values or a contrast-to-noise map based on the noise map and an attenuation map. The method further includes displaying, via a display (216), the dose and noise maps in a human readable format.

Abstract translation: 一种方法包括：基于成像系统（100）的获取协议的获取协议参数值，经由剂量估计器（208）生成指示针对对象沉积的估计剂量的剂量图，并且经由噪声估计器 （210），基于所述获取协议参数值的噪声映射表示估计图像噪声中的至少一个或基于所述噪声映射的对比噪声映射和衰减映射。 该方法还包括经由显示器（216）以人类可读格式显示剂量和噪声图。

公开(公告)号：US08086001B2

公开(公告)日：2011-12-27

申请号：US12090359

申请日：2006-10-06

Applicant: Joerg Bredno ,  Georg Rose ,  Juergen Weese ,  Alexandra Groth ,  Sabine Mollus ,  Matthias Bertram ,  Jens Wiegert ,  Christoph Neukirchen

Inventor： Joerg Bredno ,  Georg Rose ,  Juergen Weese ,  Alexandra Groth ,  Sabine Mollus ,  Matthias Bertram ,  Jens Wiegert ,  Christoph Neukirchen

IPC: G06K9/00

CPC classification number: A61B6/032 ,  A61B6/481 ,  A61B6/488 ,  A61B6/507 ,  A61B6/542

Abstract: Adaptively controlling an imaging system (200, 205) includes constructing model feature characteristics (105) of a process over time, determining parameters and commands (110) for controlling the imaging system for each state of the process, performing data acquisition (120) for the process, extracting current features (130) of the process from the acquired data, matching (135) the current features (130) with the model feature characteristics (105) to determine a state of the process (140), and controlling the data acquisition based on the state of the process to produce optimized data.

Abstract translation: 自适应地控制成像系统（200,205）包括构建处理过程的模型特征特征（105），确定参数和命令（110），以控制成像系统对于每个处理状态，执行数据采集（120） 该过程从所获取的数据提取过程的当前特征（130），将当前特征（130）与模型特征特征（105）匹配（135）以确定过程（140）的状态，以及控制数据 根据进程的状态获取生成优化数据。

公开(公告)号：US20110286573A1

公开(公告)日：2011-11-24

申请号：US13145128

申请日：2009-12-23

Applicant: Colas Schretter ,  Matthias Bertram ,  Christoph Neukirchen

Inventor： Colas Schretter ,  Matthias Bertram ,  Christoph Neukirchen

IPC: A61B6/03 ,  G06K9/00

CPC classification number: G06T11/005 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/4233 ,  A61B6/4452 ,  A61B6/488 ,  A61B6/5217 ,  A61B6/542 ,  A61B6/587 ,  G06T5/20 ,  G06T7/20 ,  G06T2207/10116 ,  G06T2207/20032 ,  G06T2211/40 ,  G06T2211/412

Abstract: A method and apparatus are provided to improve large field of view CT image acquisition by using at least two scanning procedures: (i) one with the radiation source and detector centered and (ii) one in an offset configuration. The imaging data obtained from both of the scanning procedures is used in the reconstruction of the image. In addition, a method and apparatus are provided for detecting motion in a reconstructed image by generating a motion map that is indicative of the regions of the reconstructed image that are affected by motion artifacts. Optionally, the motion map may be used for motion estimation and/or motion compensation to prevent or diminish motion artifacts in the resulting reconstructed image. An optional method for generating a refined motion map is also provided.

Abstract translation: 提供了一种通过使用至少两个扫描程序来改善大视野CT图像获取的方法和装置：（i）一个具有辐射源和检测器的中心，以及（ii）一个偏移配置。 从扫描过程中获得的成像数据用于重建图像。 此外，提供了一种方法和装置，用于通过产生指示受运动伪像影响的重建图像的区域的运动图来检测重建图像中的运动。 可选地，运动图可以用于运动估计和/或运动补偿以防止或减少所得到的重建图像中的运动伪像。 还提供了用于生成精细运动图的可选方法。

公开(公告)号：US20110182400A1

公开(公告)日：2011-07-28

申请号：US13120660

申请日：2009-10-05

Applicant: Peter Forthmann ,  Thomas Koehler ,  Udo Van Stevendaal ,  Matthias Bertram ,  Steffen Wiesner ,  Colas Schretter

Inventor： Peter Forthmann ,  Thomas Koehler ,  Udo Van Stevendaal ,  Matthias Bertram ,  Steffen Wiesner ,  Colas Schretter

IPC: A61B6/03 ,  G01N23/04

CPC classification number: A61B6/032 ,  A61B5/107 ,  A61B6/027

Abstract: A method and apparatus are provided to improve CT image acquisition using a displaced acquisition geometry. A CT apparatus may be used having a source (102) and a detector (104) transversely displaced from a center (114) of a field of view (118) during acquisition of the projection data. The amount of transverse displacement may be determined based on the size of the object (108). The source and the detector may be adjusted to vary the size of the transverse field of view. The first data set acquired by the detector may be reconstructed and used to simulate missing projection data that could not be acquired by the detector at each projection angle. The measured projection data and the simulated projection data may be used to obtain a second data set. The second data set may be compared to the first data set to produce a corrected data set.

Abstract translation: 提供了一种方法和装置，用于改善使用位移采集几何形状的CT图像采集。 可以使用CT装置，在获取投影数据期间具有从视场（118）的中心（114）横向移位的源（102）和检测器（104）。 可以基于物体（108）的尺寸来确定横向位移量。 源和检测器可以被调节以改变横向视场的大小。 由检测器获取的第一数据集可以被重构并用于模拟在每个投影角度不能由检测器获取的丢失的投影数据。 所测量的投影数据和模拟投影数据可用于获得第二数据集。 可以将第二数据集与第一数据集进行比较以产生校正数据集。

公开(公告)号：US20100208964A1

公开(公告)日：2010-08-19

申请号：US12666820

申请日：2008-06-23

Applicant: Jens Wiegert ,  Matthias Bertram

Inventor： Jens Wiegert ,  Matthias Bertram

IPC: G06K9/00

CPC classification number: G01T1/1648 ,  G06T11/005

Abstract: A method, a computer program as well as a corresponding apparatus for eliminating scatter artefacts that corrupt an image of an object using computed tomography, wherein X-ray projections of the object are at least partially truncated, whereas the method comprises the steps of: reconstructing a truncated image of the object with a limited field of view from the projections; constructing a model of the object in an extended field of view using the truncated image of the object; deriving a scatter estimate by means of Monte-Carlo simulation using the model of object; correcting a projection of the object for X-ray scatter based on the scatter estimate; reconstructing a scatter-corrected image using the corrected projections.

Abstract translation: 一种方法，计算机程序以及用于消除使用计算机断层摄影破坏对象的图像的散射伪影的相应装置，其中对象的X射线投影至少部分被截断，而该方法包括以下步骤：重建 具有来自投影的有限视野的物体的截断图像; 使用对象的截断图像在扩展视场中构建对象的模型; 通过使用对象模型的蒙特卡罗模拟得出散度估计; 基于散射估计来校正物体对于X射线散射的投影; 使用校正的投影重建散射校正图像。

公开(公告)号：US20090258120A1

公开(公告)日：2009-10-15

申请号：US12306284

申请日：2007-06-13

Applicant: Guenter Zeitler ,  Matthias Bertram ,  Christian Baeumer

Inventor： Guenter Zeitler ,  Matthias Bertram ,  Christian Baeumer

IPC: G01N33/14 ,  B67D5/06 ,  B67D5/62 ,  B65D35/56 ,  G05D23/00

CPC classification number: B67D1/0884 ,  B67D1/0888 ,  Y10T436/11 ,  Y10T436/115831

Abstract: The present invention is directed to a freshness indicator (9) for a chilled beverage and in particular to a beverage dispensing device (1) with a freshness indicator (9) for a chilled beverage, wherein the beverage dispensing device (1) comprises an outer housing (7), a tapping device (2) for dispensing a beverage, a beverage container (4) being placeable in the outer housing (7) and connectable with the tapping device (2), and the outer housing (7) functioning as a chiller (8), characterized in that the beverage freshness indicator device (9) comprises: a display (10) for indicating the storage temperature, maximum storage period, actual freshness of the beverage, the time left until expiry of the freshness and/or the date of expiry of the freshness, a data input unit (11) for the input of data and/or means (12) for recording replacement of the beverage container (4), at least one temperature sensor (13) for measuring the storage temperature of the beverage, —a temperature controller (14) for adjusting the cooling temperature of the chiller (8), a data storage unit (15) for storing the freshness criteria, a signal processing unit (16), which temperature sensor (13) transmits a signal regarding the current beverage storage temperature to the signal processing unit (16) and the signal processing unit (16) calculates, depending on the recorded storage temperature period and based on stored freshness criteria, the actual freshness of the beverage, the time left until expiry of the freshness of the beverage and/or the date of expiry of the freshness of the beverage, and the signal processing unit (16) transmits the calculated data to the display (10).

Abstract translation: 本发明涉及一种用于冷冻饮料的新鲜度指示器（9），特别涉及一种具有用于冷冻饮料的新鲜度指示器（9）的饮料分配装置（1），其中所述饮料分配装置（1）包括外部 壳体（7），用于分配饮料的攻丝装置（2），可容纳在外壳体（7）中并可与出料装置（2）连接的饮料容器（4） 一种冷却器（8），其特征在于，所述饮料新鲜度指示装置（9）包括：显示器（10），用于指示所述饮料的储存温度，最大储存期间，实际新鲜度，剩余时间直到新鲜度和/ 或新鲜度期满的日期，用于输入数据的数据输入单元（11）和/或用于记录饮料容器（4）的更换的装置（12），至少一个温度传感器（13），用于测量 饮料的储存温度，温度控制器 （14），用于调节冷却器（8）的冷却温度，用于存储新鲜度标准的数据存储单元（15），信号处理单元（16），该温度传感器（13）传送关于当前饮料储存器 信号处理单元（16）和信号处理单元（16）的温度根据所记录的存储温度周期和基于存储的新鲜度标准计算出饮料的实际新鲜度，直到剩余时间为止 饮料和/或饮料的新鲜度到期的日期，并且信号处理单元（16）将计算出的数据发送到显示器（10）。