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公开(公告)号：US20110317901A1
公开(公告)日：2011-12-29
申请号：US13164796
申请日：2011-06-21
申请人： Thomas Allmendinger , Herbert Bruder , Thomas Flohr , Rainer Raupach , Harald SchÖndube , Karl Stierstorfer
发明人： Thomas Allmendinger , Herbert Bruder , Thomas Flohr , Rainer Raupach , Harald SchÖndube , Karl Stierstorfer
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/4441 , A61B6/481 , A61B6/486 , A61B6/503 , A61B6/507 , A61B6/5211 , A61B6/5264 , A61B6/5288 , A61B2090/3762 , G06T5/002 , G06T5/50 , G06T11/006 , G06T2207/10081 , G06T2207/20221 , G06T2207/30048 , G06T2211/412 , G06T2211/436
摘要： A method is disclosed for the reconstruction of picture data of a moving object under examination from measurement, with the measurement data having been recorded beforehand for a relative rotational movement between a radiation source of a computed tomography system and the object under examination. In at least one embodiment, first picture data is computed from a complete measurement dataset of the measurement data for a picture reconstruction, and second picture data is computed from an incomplete measurement dataset for a computed tomography picture reconstruction. The first picture data and the second picture data are combined into third picture data, with the combination being computed using location-dependent movement information of the object under examination.
摘要翻译： 公开了一种用于重建从测量中检查的移动物体的图像数据的方法，其中测量数据已被预先记录在计算机断层摄影系统的辐射源和被检查物体之间的相对旋转运动。 在至少一个实施例中，从用于图像重建的测量数据的完整测量数据集计算第一图像数据，并且从用于计算机断层摄影图像重建的不完整测量数据集计算第二图像数据。 将第一图像数据和第二图像数据组合成第三图像数据，使用正在检查的对象的位置相关运动信息来计算组合。
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公开(公告)号：US08553962B2
公开(公告)日：2013-10-08
申请号：US13164796
申请日：2011-06-21
申请人： Thomas Allmendinger , Herbert Bruder , Thomas Flohr , Rainer Raupach , Harald Schöndube , Karl Stierstorfer
发明人： Thomas Allmendinger , Herbert Bruder , Thomas Flohr , Rainer Raupach , Harald Schöndube , Karl Stierstorfer
CPC分类号： A61B6/032 , A61B6/4441 , A61B6/481 , A61B6/486 , A61B6/503 , A61B6/507 , A61B6/5211 , A61B6/5264 , A61B6/5288 , A61B2090/3762 , G06T5/002 , G06T5/50 , G06T11/006 , G06T2207/10081 , G06T2207/20221 , G06T2207/30048 , G06T2211/412 , G06T2211/436
摘要： A method is disclosed for the reconstruction of picture data of a moving object under examination from measurement, with the measurement data having been recorded beforehand for a relative rotational movement between a radiation source of a computed tomography system and the object under examination. In at least one embodiment, first picture data is computed from a complete measurement dataset of the measurement data for a picture reconstruction, and second picture data is computed from an incomplete measurement dataset for a computed tomography picture reconstruction. The first picture data and the second picture data are combined into third picture data, with the combination being computed using location-dependent movement information of the object under examination.
摘要翻译： 公开了一种用于重建从测量中检查的移动物体的图像数据的方法，其中测量数据已被预先记录在计算机断层摄影系统的辐射源和被检查物体之间的相对旋转运动。 在至少一个实施例中，从用于图像重建的测量数据的完整测量数据集计算第一图像数据，并且从用于计算机断层摄影图像重建的不完整测量数据集计算第二图像数据。 将第一图像数据和第二图像数据组合成第三图像数据，使用正在检查的对象的位置相关运动信息来计算组合。
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3.发明授权公开(公告)号：US08588493B2
公开(公告)日：2013-11-19
申请号：US12849082
申请日：2010-08-03
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B5/0456 , A61B6/4014 , A61B6/482 , A61B6/503 , A61B6/507 , G06T11/006 , G06T2211/412 , G06T2211/424 , G06T2211/436
摘要： A method is disclosed for reconstructing image data of a moving examination object from measurement data, wherein the measurement data was captured in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination object. In at least one embodiment of the method, a first image of the examination object is calculated from a complete measurement data record of the measurement data for an image reconstruction and a second image of the examination object is calculated from an incomplete measurement data record of the measurement data for an image reconstruction. Frequency splitting of the first and second images takes place respectively in at least one low-frequency and one higher-frequency component and the image data of the second image is supplemented in the low-frequency component with image data of the low-frequency component of the first image. In a further processing step the second image thus supplemented is improved using the first image, in that errors due to the incompleteness of the measurement data record of the second image are reduced.
摘要翻译： 公开了一种用于从测量数据重建运动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和检查对象之间的相对旋转运动的过程中捕获测量数据。 在该方法的至少一个实施例中，根据用于图像重构的测量数据的完整测量数据记录来计算检查对象的第一图像，并且从不完整的测量数据记录计算检查对象的第二图像 用于图像重建的测量数据。 第一和第二图像的频率分割分别发生在至少一个低频和一个较高频分量中，并且第二图像的图像数据在低频分量中被补充，低频分量的图像数据是 第一张图片。 在另外的处理步骤中，使用第一图像来改善如此补充的第二图像，因为减少了由于第二图像的测量数据记录的不完备性造成的错误。
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公开(公告)号：US08442293B2
公开(公告)日：2013-05-14
申请号：US13018724
申请日：2011-02-01
CPC分类号： A61B6/4014 , A61B6/027 , A61B6/032 , A61B6/4441 , A61B6/482 , A61B6/507 , G01N23/046 , G01N2223/401 , G01N2223/419 , G01N2223/612 , G06T11/006 , G06T2211/432
摘要： A method is disclosed for reconstructing image data of an examination subject from measured data, wherein the measured data was acquired in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination subject. A limited area between the radiation source and a detector represents a field of view in respect of which measured data can be acquired, and parts of the examination subject were located at least temporarily outside the field of view in the course of the measured data acquisition. In at least one embodiment, first image data is reconstructed from the measured data, and a boundary of the examination subject is determined with the aid of the first image data. The first image data is subsequently modified using the determined boundary, and projection data is calculated from the modified first image data. The measured data is modified using the projection data, and finally second image data is reconstructed from the modified measured data.
摘要翻译： 公开了一种用于从测量数据重建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与检查对象之间的相对旋转运动的过程中获取测量数据。 辐射源和检测器之间的有限区域表示可以获取测量数据的视野，并且在测量数据采集的过程中检查对象的部分至少临时定位在视场外。 在至少一个实施例中，从测量数据重建第一图像数据，借助于第一图像数据确定检查对象的边界。 随后使用所确定的边界修改第一图像数据，并且从修改的第一图像数据计算投影数据。 使用投影数据修改测量数据，最后从修改的测量数据重建第二图像数据。
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公开(公告)号：US07940884B2
公开(公告)日：2011-05-10
申请号：US12729280
申请日：2010-03-23
IPC分类号： A61B6/00
CPC分类号： G06T11/006 , G06T2211/424
摘要： A method and an image reconstruction device are disclosed for reconstructing image data on the basis of input projection data obtained via an X-ray computerized tomography system. A target convolutional kernel is selected, which, when reconstructing image data from the input projection data using simple filtered back projection, would lead to target image characteristics. Image data is then reconstructed using an iterative reconstruction method of at least one embodiment. In at least one embodiment, the method includes a) reconstructing image data of a first iterative stage from the input projection data, b) generating synthetic projection data on the basis of the image data of the current iterative stage, c) forming difference projection data on the basis of the input projection data and the synthetic projection data, d) generating residue image data from the difference projection data, e) combining the residue image data with the image data of the current iterative stage to form image data of an additional iterative stage, wherein the image data of the current iterative stage is subjected to filtering before or during combination with the residue image data by using a regularization convolutional kernel which is determined on the basis of the selected target convolutional kernel, and f) repeating b) to e) until a termination condition occurs.
摘要翻译： 公开了一种基于通过X射线计算机断层摄影系统获得的输入投影数据来重构图像数据的方法和图像重建装置。 选择目标卷积核，当使用简单的过滤反投影从输入投影数据重建图像数据时，将导致目标图像特征。 然后使用至少一个实施例的迭代重建方法来重建图像数据。 在至少一个实施例中，该方法包括：a）从输入的投影数据重建第一迭代阶段的图像数据，b）基于当前迭代阶段的图像数据产生合成投影数据，c）形成差分投影数据 基于输入投影数据和合成投影数据，d）从差分投影数据生成残差图像数据，e）将残差图像数据与当前迭代阶段的图像数据组合以形成附加迭代图像数据 阶段，其中当前迭代阶段的图像数据在与剩余图像数据组合之前或之后通过使用基于所选择的目标卷积核确定的正则化卷积核进行滤波，以及f）重复b）至 e）直到发生终止条件。
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6.发明授权Method for recording and evaluating image data with the aid of a tomography machine 有权借助于断层摄影机记录和评估图像数据的方法公开(公告)号：US07457450B2
公开(公告)日：2008-11-25
申请号：US11043965
申请日：2005-01-28
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/405 , A61B6/482 , Y10S378/901
摘要： A method is for recording and evaluating image data with the aid of a tomography machine. At least two recordings with different spectral distribution are made of an examination area of an object. Further, measured data obtained from the two recordings are evaluated such that additional information relating to the examination area and/or a specific representation of the image of the examination area are/is obtained from the different spectral distributions. The tomography machine includes at least two separate recording systems. Further, it is operated such that the two recording systems operate with a different spectral distribution. As such, the additional information and the specific representation of an image can be obtained in conjunction with a reduced scanning time.
摘要翻译： 一种用于通过断层摄影机记录和评估图像数据的方法。 具有不同光谱分布的至少两个记录由对象的检查区域构成。 此外，评估从两个记录获得的测量数据，使得从不同的光谱分布获得与检查区域相关的附加信息和/或检查区域的图像的特定表示。 断层摄影机包括至少两个单独的记录系统。 此外，其操作使得两个记录系统以不同的光谱分布进行操作。 因此，附加信息和图像的具体表示可以结合减少的扫描时间来获得。
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公开(公告)号：US20110188723A1
公开(公告)日：2011-08-04
申请号：US13018724
申请日：2011-02-01
IPC分类号： G06K9/00
CPC分类号： A61B6/4014 , A61B6/027 , A61B6/032 , A61B6/4441 , A61B6/482 , A61B6/507 , G01N23/046 , G01N2223/401 , G01N2223/419 , G01N2223/612 , G06T11/006 , G06T2211/432
摘要： A method is disclosed for reconstructing image data of an examination subject from measured data, wherein the measured data was acquired in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination subject. A limited area between the radiation source and a detector represents a field of view in respect of which measured data can be acquired, and parts of the examination subject were located at least temporarily outside the field of view in the course of the measured data acquisition. In at least one embodiment, first image data is reconstructed from the measured data, and a boundary of the examination subject is determined with the aid of the first image data. The first image data is subsequently modified using the determined boundary, and projection data is calculated from the modified first image data. The measured data is modified using the projection data, and finally second image data is reconstructed from the modified measured data.
摘要翻译： 公开了一种用于从测量数据重建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与检查对象之间的相对旋转运动的过程中获取测量数据。 辐射源和检测器之间的有限区域表示可以获取测量数据的视野，并且在测量数据采集的过程中检查对象的部分至少临时定位在视场外。 在至少一个实施例中，从测量数据重建第一图像数据，借助于第一图像数据确定检查对象的边界。 随后使用所确定的边界修改第一图像数据，并且从修改的第一图像数据计算投影数据。 使用投影数据修改测量数据，最后从修改的测量数据重建第二图像数据。
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8.发明申请公开(公告)号：US20110033097A1
公开(公告)日：2011-02-10
申请号：US12849082
申请日：2010-08-03
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B5/0456 , A61B6/4014 , A61B6/482 , A61B6/503 , A61B6/507 , G06T11/006 , G06T2211/412 , G06T2211/424 , G06T2211/436
摘要： A method is disclosed for reconstructing image data of a moving examination object from measurement data, wherein the measurement data was captured in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination object. In at least one embodiment of the method, a first image of the examination object is calculated from a complete measurement data record of the measurement data for an image reconstruction and a second image of the examination object is calculated from an incomplete measurement data record of the measurement data for an image reconstruction. Frequency splitting of the first and second images takes place respectively in at least one low-frequency and one higher-frequency component and the image data of the second image is supplemented in the low-frequency component with image data of the low-frequency component of the first image. In a further processing step the second image thus supplemented is improved using the first image, in that errors due to the incompleteness of the measurement data record of the second image are reduced.
摘要翻译： 公开了一种用于从测量数据重建运动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和检查对象之间的相对旋转运动的过程中捕获测量数据。 在该方法的至少一个实施例中，根据用于图像重构的测量数据的完整测量数据记录来计算检查对象的第一图像，并且从不完整的测量数据记录计算检查对象的第二图像 用于图像重建的测量数据。 第一和第二图像的频率分割分别发生在至少一个低频和一个较高频分量中，并且第二图像的图像数据在低频分量中被补充，低频分量的图像数据是 第一张图片。 在另外的处理步骤中，使用第一图像来改善如此补充的第二图像，因为减少了由于第二图像的测量数据记录的不完备性造成的错误。
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9.发明申请Method for recording and evaluating image data with the aid of a tomography machine 有权借助于断层摄影机记录和评估图像数据的方法公开(公告)号：US20050163283A1
公开(公告)日：2005-07-28
申请号：US11043965
申请日：2005-01-28
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/405 , A61B6/482 , Y10S378/901
摘要： A method is for recording and evaluating image data with the aid of a tomography machine. At least two recordings with different spectral distribution are made of an examination area of an object. Further, measured data obtained from the two recordings are evaluated such that additional information relating to the examination area and/or a specific representation of the image of the examination area are/is obtained from the different spectral distributions. The tomography machine includes at least two separate recording systems. Further, it is operated such that the two recording systems operate with a different spectral distribution. As such, the additional information and the specific representation of an image can be obtained in conjunction with a reduced scanning time.
摘要翻译： 一种用于通过断层摄影机记录和评估图像数据的方法。 具有不同光谱分布的至少两个记录由对象的检查区域构成。 此外，评估从两个记录获得的测量数据，使得从不同的光谱分布获得与检查区域相关的附加信息和/或检查区域的图像的特定表示。 断层摄影机包括至少两个单独的记录系统。 此外，其操作使得两个记录系统以不同的光谱分布进行操作。 因此，附加信息和图像的具体表示可以结合减少的扫描时间来获得。
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公开(公告)号：US08600137B2
公开(公告)日：2013-12-03
申请号：US13111244
申请日：2011-05-19
IPC分类号： G06K9/00
CPC分类号： A61B6/5205 , A61B6/032 , A61B6/4014 , A61B6/4441 , A61B6/482 , A61B6/507 , G06T11/006 , 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 captured during a relative rotational movement between a radiation source of a computed tomography system and the object under examination. In at least one embodiment, first image data is computed by the measurement data being modified to obtain a specific gray value characteristic of the first image data to be reconstructed and the first image data is computed by way of an iterative algorithm using the modified measurement data. Second image data is also computed by a series of chronologically-consecutive images being reconstructed and processing being carried out on the series of images to reduce temporal noise. Finally a combination of the first and the second image data is carried out.
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，其中测量数据已经在计算机断层摄影系统的辐射源与被检查物体之间的相对旋转运动期间被捕获。 在至少一个实施例中，通过修改的测量数据来计算第一图像数据，以获得要重建的第一图像数据的特定灰度特性，并且通过使用修改的测量数据的迭代算法来计算第一图像数据 。 还通过一系列按时间顺序重新连续的图像来计算第二图像数据，并且对该系列图像进行处理以减少时间噪声。 最后，执行第一和第二图像数据的组合。
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