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1. 发明授权

US07428292B2 Method and system for CT imaging using multi-spot emission sources 有权
标题翻译：使用多点发射源进行CT成像的方法和系统
公开(公告)号：US07428292B2
公开(公告)日：2008-09-23
申请号：US11563061
申请日：2006-11-24
申请人： Bruno K. B. De Man , Colin R. Wilson , Bernhard Claus , Maria Iatrou , James W. LeBlanc , Dirk Bequé , Samit Kumar Basu , Mark Vermilyea , Zhye Yin
发明人： Bruno K. B. De Man , Colin R. Wilson , Bernhard Claus , Maria Iatrou , James W. LeBlanc , Dirk Bequé , Samit Kumar Basu , Mark Vermilyea , Zhye Yin
IPC分类号： G01N23/00
CPC分类号： G01N23/046 , A61B6/032 , A61B6/4028 , A61B6/4085 , G01N2223/419 , G01N2223/612
摘要： A CT imaging system includes a rotatable gantry having an opening to receive an object to be scanned. A plurality of x-ray emission sources are attached to the rotatable gantry, each x-ray emission source configured to emit x-rays in a conebeam toward the object. The CT imaging system also includes a plurality of x-ray detector arrays attached to the gantry and positioned to receive x-rays passing through the object. At least one x-ray detector array of the plurality of x-ray detector arrays is configured to receive x-rays from more than one x-ray emission source.
摘要翻译： CT成像系统包括具有用于接收待扫描物体的开口的可旋转机架。多个x射线发射源附着在可旋转机架上，每个X射线发射源被配置为朝向物体发射锥形束中的x射线。 CT成像系统还包括多个附接到台架的X射线检测器阵列，并被定位成接收通过物体的X射线。多个X射线检测器阵列中的至少一个X射线检测器阵列被配置为从多于一个x射线发射源接收x射线。

2. 发明授权

US07283604B2 Method and system of CT data correction 有权
公开(公告)号：US07283604B2
公开(公告)日：2007-10-16
申请号：US11627121
申请日：2007-01-25
申请人： Bruno K. B. De Man , Samit Kumar Basu
发明人： Bruno K. B. De Man , Samit Kumar Basu
IPC分类号： H05G1/60
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

3. 发明授权

US07260170B2 Method and system of CT data correction 有权
公开(公告)号：US07260170B2
公开(公告)日：2007-08-21
申请号：US11627144
申请日：2007-01-25
申请人： Jerome Stephen Arenson , David Ruimi , Evgeny Drapkin , Dmitry Samsonov , Bruno K. B. De Man , Samit Kumar Basu
发明人： Jerome Stephen Arenson , David Ruimi , Evgeny Drapkin , Dmitry Samsonov , Bruno K. B. De Man , Samit Kumar Basu
IPC分类号： G01N23/00
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

4. 发明授权

US07742563B2 X-ray source and detector configuration for a non-translational x-ray diffraction system 失效
$X-ray source and detector configuration for a non-translational x-ray diffraction system$
标题翻译：用于非平移x射线衍射系统的X射线源和检测器配置
公开(公告)号：US07742563B2
公开(公告)日：2010-06-22
申请号：US12207641
申请日：2008-09-10
申请人： Peter Michael Edic , Geoffrey Harding , Bruno K. B. De Man , Helmut Rudolf Strecker
发明人： Peter Michael Edic , Geoffrey Harding , Bruno K. B. De Man , Helmut Rudolf Strecker
IPC分类号： G01N23/20 , G01N23/04
CPC分类号： G01N23/20
摘要： A system and method for scanning objects using a non-translational x-ray diffraction (XRD) system is disclosed. The system includes a scanning area through which an object to be scanned traverses and a distributed x-ray source having a plurality of focal spot locations. The distributed x-ray source is affixed on the scanning area and is configured to emit x-rays towards the object as a series of parallel x-ray beams. A stationary detector arrangement is affixed on another side of the scanning area generally opposite the distributed x-ray source and is configured to measure a coherent scatter spectra of the x-rays after passing through the object. A data acquisition system (DAS) is connected to the detector arrangement and is configured to measure the coherent scatter spectra, which is utilized to generate XRD data and determine a material composition of at least a portion of the object from the XRD data.
摘要翻译：公开了一种使用非平移X射线衍射（XRD）系统扫描物体的系统和方法。该系统包括扫描区域，待扫描物体穿过该扫描区域以及具有多个焦点位置的分布式X射线源。分布式X射线源被固定在扫描区域上并且被配置为以一系列平行的X射线束朝向物体发射X射线。固定检测器装置固定在扫描区域的与分布式x射线源大致相对的另一侧，并且被配置成测量穿过物体之后的x射线的相干散射光谱。数据采集系统（DAS）连接到检测器装置，并且被配置为测量相干散射光谱，其被用于产生XRD数据并且根据XRD数据确定物体的至少一部分的材料组成。

5. 发明授权

US07548604B2 Method and apparatus for reduction of metal artifacts in CT imaging 失效
标题翻译：用于减少CT成像中金属伪影的方法和装置
公开(公告)号：US07548604B2
公开(公告)日：2009-06-16
申请号：US11620004
申请日：2007-01-04
申请人： Bruno K. B. De Man , Deborah Joy Walter
发明人： Bruno K. B. De Man , Deborah Joy Walter
IPC分类号： A61B6/00
CPC分类号： A61B6/482 , A61B6/4241 , A61B6/4447 , A61B6/5282
摘要： A method and apparatus for reducing artifacts in image data generated by a computed tomography system is provided. The artifacts are due to the presence of a high density object in a subject of interest. CT data is acquired at a number of differing tilt angles. The data is then combined and reconstructed to generate an improved composite image substantially free of artifacts caused by the high density object.
摘要翻译：提供一种用于减少由计算机断层摄影系统产生的图像数据中的伪影的方法和装置。这些人造物是由于感兴趣的对象中存在高密度物体。以多个不同的倾斜角获取CT数据。然后将数据组合和重建，以产生基本上不含由高密度物体引起的假象的改进的合成图像。

6. 发明授权

US07388940B1 Architectures for cardiac CT based on area x-ray sources 有权
标题翻译：基于区域x射线源的心脏CT建筑
公开(公告)号：US07388940B1
公开(公告)日：2008-06-17
申请号：US11563065
申请日：2006-11-24
申请人： Bruno K. B. De Man , Norbert J. Pelc
发明人： Bruno K. B. De Man , Norbert J. Pelc
IPC分类号： G01N23/083
CPC分类号： A61B6/503 , A61B6/032 , A61B6/4014 , A61B6/4085
摘要： A CT imaging system includes a rotatable gantry having an opening to receive an object to be scanned having a small field-of-view (FOV) inside a large FOV. A plurality of area sources is attached to the rotatable gantry, each area source includes a plurality of x-ray emission sources, wherein the plurality of area sources are configured to emit x-rays toward the object. A plurality of x-ray detector arrays is attached to the gantry and positioned such that at least a first detector array and a second detector array each receive x-rays that pass through at least the entire small FOV of the object.
摘要翻译： CT成像系统包括可旋转机架，其具有用于接收在大FOV内部具有小视场（FOV）的待扫描对象的开口。多个区域源附接到可旋转机架，每个区域源包括多个x射线发射源，其中多个区域源被配置为向物体发射X射线。多个x射线检测器阵列连接到台架并且定位成使得至少第一检测器阵列和第二检测器阵列各自接收穿过至少对象的整个小FOV的x射线。

7. 发明授权

US07778386B2 Methods for analytic reconstruction for mult-source inverse geometry CT 有权
标题翻译：多源逆几何CT分析重建方法
公开(公告)号：US07778386B2
公开(公告)日：2010-08-17
申请号：US11741359
申请日：2007-04-27
申请人： Zhye Yin , Jed Douglas Pack , Bruno K. B. De Man , Norbert J. Pelc
发明人： Zhye Yin , Jed Douglas Pack , Bruno K. B. De Man , Norbert J. Pelc
IPC分类号： A61B6/03
CPC分类号： G06T11/006 , G06T2211/416 , G06T2211/421
摘要： Disclosed are embodiments of methods for reconstructing x-ray projection data (e.g., one or more sinograms) acquired using a multi-source, inverse-geometry computed tomography (“IGCT”) scanner. One embodiment of a first method processes an IGCT sinogram by rebinning first in “z” and then in “xy,” with feathering applied during the “xy” rebinning. This produces an equivalent of a multi-axial 3rd generation sinogram, which may be further processed using a parallel derivative and/or Hilbert transform. A TOM-window (with feathering) technique and a combines backprojection technique may also be applied to produce a reconstructed volume. An embodiment of a second method processes an IGCT sinogram using a parallel derivative and/or redundancy weighting. The second method may also use signum weighting, TOM-windowing (with feathering), backprojection, and a Hilbert Inversion to produce another reconstructed volume.
摘要翻译：公开了用于重建使用多源反相几何计算机断层摄影（“IGCT”）扫描仪获取的x射线投影数据（例如，一个或多个正弦图）的方法的实施例。第一种方法的一个实施例通过在“z”中首先重新组合，然后在“xy”中重新组合来处理IGCT正弦图，在“xy”重组期间应用羽化。这产生等效的多轴第三代正弦图，其可以使用平行导数和/或希尔伯特变换进一步处理。 TOM窗口（具有羽化）技术和组合的反投影技术也可以应用于产生重建体积。第二种方法的实施例使用并行导数和/或冗余加权处理IGCT正弦图。第二种方法还可以使用信号加权，TOM窗口（具有羽化），反投影和希尔伯特反演来产生另一个重建的体积。

8. 发明申请

US20080165920A1 METHOD AND APPARATUS FOR REDUCTION OF METAL ARTIFACTS IN CT IMAGING 失效
标题翻译：用于减少金属成像在CT成像中的方法和装置
公开(公告)号：US20080165920A1
公开(公告)日：2008-07-10
申请号：US11620004
申请日：2007-01-04
申请人： Bruno K. B. De Man , Deborah Joy Walter
发明人： Bruno K. B. De Man , Deborah Joy Walter
IPC分类号： A61B6/03 , G06K9/00
CPC分类号： A61B6/482 , A61B6/4241 , A61B6/4447 , A61B6/5282
摘要： A method and apparatus for reducing artifacts in image data generated by a computed tomography system is provided. The artifacts are due to the presence of a high density object in a subject of interest. CT data is acquired at a number of differing tilt angles. The data is then combined and reconstructed to generate an improved composite image substantially free of artifacts caused by the high density object.
摘要翻译：提供一种用于减少由计算机断层摄影系统产生的图像数据中的伪影的方法和装置。这些人造物是由于感兴趣的对象中存在高密度物体。以多个不同的倾斜角获取CT数据。然后将数据组合和重建，以产生基本上不含由高密度物体引起的假象的改进的合成图像。

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