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1. 发明授权

US08260020B2 Image based computed tomography number and volume corrections for thin objects in computed tomography systems 有权
标题翻译：基于图像的计算机断层扫描数量和计算机断层摄影系统中薄物体的体积校正
公开(公告)号：US08260020B2
公开(公告)日：2012-09-04
申请号：US12130269
申请日：2008-05-30
申请人： Walter Garms
发明人： Walter Garms
IPC分类号： G06K9/00
CPC分类号： G06K9/4638 , G06T7/62 , G06T2207/10081 , G06T2207/30112
摘要： Methods, apparatuses, and computer-readable media are provided for image based CT Number and volume corrections for thin objects in computed tomography systems. For example, in one embodiment a method is provide which computes an average computed tomography (“CT”) value and volume of voxels that are part of an object. Thereafter, a surface area and a surface CT Number, a boundary area and a boundary CT Number, and a corrected CT Number and a corrected volume for the object are computed. Embodiments of the invention also include other methods, computer-readable mediums, apparatuses, and systems that contain features similar to the features in the above described method.
摘要翻译：为计算机断层摄影系统中的薄物体提供了基于图像的CT数量和体积校正的方法，装置和计算机可读介质。例如，在一个实施例中，提供了一种计算作为对象的一部分的体素的平均计算机断层摄影（“CT”）值和体积的方法。此后，计算表面积和表面CT数，边界区域和边界CT数，以及校正的CT数量和对象的修正体积。本发明的实施例还包括其它方法，计算机可读介质，装置和系统，其包含与上述方法中的特征相似的特征。

2. 发明申请

US20070237288A1 IMAGE-BASED MATERIAL DECOMPOSITION 有权
标题翻译：基于图像的材料分解
公开(公告)号：US20070237288A1
公开(公告)日：2007-10-11
申请号：US11278287
申请日：2006-03-31
申请人： J. Tkaczyk , William Leue , Walter Garms , Joseph Bendahan , Deborah Walter , Sussan Pourjavid-Granfors , Xiaoye Wu , Peter Edic , Pierfrancesco Landolfi
发明人： J. Tkaczyk , William Leue , Walter Garms , Joseph Bendahan , Deborah Walter , Sussan Pourjavid-Granfors , Xiaoye Wu , Peter Edic , Pierfrancesco Landolfi
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/405 , A61B6/027 , A61B6/032 , A61B6/4035 , A61B6/4241 , A61B6/482 , G01V5/0041 , G01V5/005 , G06T11/005
摘要： A CT scanner acquires CT images at different energy levels and registers those images to provide a composite image that is substantially free of beam hardening artifacts and conspicuously provides atomic information of that imaged.
摘要翻译： CT扫描仪以不同的能量级别获取CT图像并登记这些图像以提供基本上没有光束硬化假象的合成图像，并且显着地提供该成像的原子信息。

3. 发明授权

US07492860B2 Apparatus and method for controlling start and stop operations of a computed tomography imaging system 有权
标题翻译：用于控制计算机断层摄影成像系统的启动和停止操作的装置和方法
公开(公告)号：US07492860B2
公开(公告)日：2009-02-17
申请号：US11397792
申请日：2006-04-04
申请人： Walter Garms , Pierfrancesco Landolfi
发明人： Walter Garms , Pierfrancesco Landolfi
IPC分类号： G01N23/04 , G01N23/00
CPC分类号： G01N23/046 , A61B6/027 , G01N2223/419 , G01V5/005
摘要： An apparatus and method for scanning an object with a helical CT scanner, the method comprising: acquiring an amount of data corresponding to the object that is scanned by the CT scanner, wherein the amount of data is generated by an x-ray source that projects a fan beam of x-rays toward a detector array on an opposite side of a gantry of the CT scanner, the fan beam being generated at multiple x-ray source positions as the x-ray source is rotated about the object as the object passes through an opening in the gantry disposed about a conveyor for moving the object through the opening; monitoring a position of the conveyor as the object passes through the opening in the gantry; determining if the conveyor has been stationary for more than one rotation of the gantry and discarding redundant data after one rotation, optionally turning off the x-ray tube if the conveyor has been stationary for more than one gantry rotation, and if so preventing the conveyor from moving again until the tube is turned on and is stable, inputting the position of the conveyor at each x-ray source position into a reconstruction algorithm; and presenting an image of the object.
摘要翻译：一种用螺旋CT扫描器扫描物体的装置和方法，所述方法包括：获取与由CT扫描器扫描的物体相对应的数据量，其中数据量由投影的x射线源产生 X射线的扇形束朝向CT扫描仪的台架的相对侧上的检测器阵列，当X射线源随着物体通过时X射线源围绕物体旋转而在多个X射线源位置处产生风扇光束通过设置在输送机周围的台架中的开口，用于通过开口移动物体; 当物体通过台架中的开口时监测输送机的位置; 确定输送机是否已经停留在台架的多于一个旋转位置，并且在一次旋转之后丢弃冗余数据，如果输送机已经静止多于一个机架旋转，则可选地关闭X射线管，并且如果这样，防止输送机再次移动直到管被打开并且稳定，将输送机在每个x射线源位置的位置输入到重建算法中; 并呈现对象的图像。

4. 发明申请

US20070140414A1 Apparatus and method for providing a near-parallel projection from helical scan data 有权
标题翻译：用于从螺旋扫描数据提供近平行投影的装置和方法
公开(公告)号：US20070140414A1
公开(公告)日：2007-06-21
申请号：US11295952
申请日：2005-12-07
申请人： Walter Garms , Ugo Girolamo , Matthew Merzbacher
发明人： Walter Garms , Ugo Girolamo , Matthew Merzbacher
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01T1/2985 , A61B6/027 , G01V5/005
摘要： An apparatus and method for providing a projection image directly from data acquired by a CT scanner, the method comprising: acquiring an amount of data corresponding to an object that is scanned by the CT scanner, wherein the amount of data is generated by an x-ray source that projects a fan beam of x-rays toward a detector array on an opposite side of a gantry of the CT scanner as the object is passed through an opening in the gantry, the acquired amount of data comprising a reconstruction volume; selecting a viewing direction of the object; selecting a portion of a surface intersecting the reconstruction volume, wherein the selected portion comprises an imaging surface inside the reconstruction volume and corresponding to the viewing direction of the object; dividing the imaging surface into a plurality of rows and columns, thus creating a grid of points corresponding to the imaging surface; determining, for each point in the grid, a data point in the acquired amount of data corresponding to an x-ray source position wherein a ray from the x-ray source to the grid point is closest an orientation parallel to the view direction, and a detector position where the ray intersects the detector array; and presenting a projection image corresponding to the selected imaging surface, wherein the projection image comprises a plurality of projection points and each projection point in the projection image is a converted value of the data points of the acquired data.
摘要翻译：一种用于直接从由CT扫描器获取的数据提供投影图像的装置和方法，所述方法包括：获取与由CT扫描器扫描的对象相对应的数据量，其中数据量由x- 射线源，当所述物体通过所述台架中的开口时，将所述X射线的扇形束投射到所述CT扫描仪的台架的相对侧上的检测器阵列，所获取的数据量包括重建体积; 选择对象的观看方向; 选择与重建体积相交的表面的一部分，其中所选择的部分包括重建体积内的成像表面并且对应于对象的观察方向; 将成像表面分成多个行和列，从而产生与成像表面相对应的点的网格; 确定对于网格中的每个点，所获取的数据量对应于X射线源位置的数据点，其中从X射线源到网格点的射线最靠近与视图方向平行的取向，以及射线与检测器阵列相交的检测器位置; 并且呈现与所选择的成像表面对应的投影图像，其中所述投影图像包括多个投影点，并且所述投影图像中的每个投影点是所获取的数据的数据点的转换值。

5. 发明授权

US07515675B2 Apparatus and method for providing a near-parallel projection from helical scan data 有权
标题翻译：用于从螺旋扫描数据提供近平行投影的装置和方法
公开(公告)号：US07515675B2
公开(公告)日：2009-04-07
申请号：US11295952
申请日：2005-12-07
申请人： Walter Garms , Ugo Di Girolamo , Matthew Merzbacher
发明人： Walter Garms , Ugo Di Girolamo , Matthew Merzbacher
IPC分类号： A61B6/00
CPC分类号： G01T1/2985 , A61B6/027 , G01V5/005
摘要： An apparatus and method for providing a projection image directly from data acquired by a CT scanner, the method comprising: acquiring an amount of data corresponding to an object that is scanned by the CT scanner, wherein the amount of data is generated by an x-ray source that projects a fan beam of x-rays toward a detector array on an opposite side of a gantry of the CT scanner as the object is passed through an opening in the gantry, the acquired amount of data comprising a reconstruction volume; selecting a viewing direction of the object; selecting a portion of a surface intersecting the reconstruction volume, wherein the selected portion comprises an imaging surface inside the reconstruction volume and corresponding to the viewing direction of the object; dividing the imaging surface into a plurality of rows and columns, thus creating a grid of points corresponding to the imaging surface; determining, for each point in the grid, a data point in the acquired amount of data corresponding to an x-ray source position wherein a ray from the x-ray source to the grid point is closest an orientation parallel to the view direction, and a detector position where the ray intersects the detector array; and presenting a projection image corresponding to the selected imaging surface, wherein the projection image comprises a plurality of projection points and each projection point in the projection image is a converted value of the data points of the acquired data.
摘要翻译：一种用于直接从由CT扫描器获取的数据提供投影图像的装置和方法，所述方法包括：获取与由CT扫描器扫描的对象相对应的数据量，其中数据量由x- 射线源，当所述物体通过所述台架中的开口时，将所述X射线的扇形束投射到所述CT扫描仪的台架的相对侧上的检测器阵列，所获取的数据量包括重建体积; 选择对象的观看方向; 选择与重建体积相交的表面的一部分，其中所选择的部分包括重建体积内的成像表面并且对应于对象的观察方向; 将成像表面分成多个行和列，从而产生与成像表面相对应的点的网格; 确定对于网格中的每个点，所获取的数据量对应于X射线源位置的数据点，其中从X射线源到网格点的射线最靠近与视图方向平行的取向，以及射线与检测器阵列相交的检测器位置; 并且呈现与所选择的成像表面对应的投影图像，其中所述投影图像包括多个投影点，并且所述投影图像中的每个投影点是所获取的数据的数据点的转换值。

6. 发明申请

US20070230657A1 Apparatus and method for controlling start and stop operations of a computed tomography imaging system 有权
标题翻译：用于控制计算机断层摄影成像系统的启动和停止操作的装置和方法
公开(公告)号：US20070230657A1
公开(公告)日：2007-10-04
申请号：US11397792
申请日：2006-04-04
申请人： Walter Garms
发明人： Walter Garms
IPC分类号： G01N23/04
CPC分类号： G01N23/046 , A61B6/027 , G01N2223/419 , G01V5/005
摘要： An apparatus and method for scanning an object with a helical CT scanner, the method comprising: acquiring an amount of data corresponding to the object that is scanned by the CT scanner, wherein the amount of data is generated by an x-ray source that projects a fan beam of x-rays toward a detector array on an opposite side of a gantry of the CT scanner, the fan beam being generated at multiple x-ray source positions as the x-ray source is rotated about the object as the object passes through an opening in the gantry disposed about a conveyor for moving the object through the opening; monitoring a position of the conveyor as the object passes through the opening in the gantry; determining if the conveyor has been stationary for more than one rotation of the gantry and discarding redundant data after one rotation, optionally turning off the x-ray tube if the conveyor has been stationary for more than one gantry rotation, and if so preventing the conveyor from moving again until the tube is turned on and is stable, inputting the position of the conveyor at each x-ray source position into a reconstruction algorithm; and presenting an image of the object.
摘要翻译：一种用螺旋CT扫描器扫描物体的装置和方法，所述方法包括：获取与由CT扫描器扫描的物体相对应的数据量，其中数据量由投影的x射线源产生 X射线的扇形束朝向CT扫描仪的台架的相对侧上的检测器阵列，当X射线源随着物体通过时X射线源围绕物体旋转而在多个X射线源位置处产生风扇光束通过设置在输送机周围的台架中的开口，用于通过开口移动物体; 当物体通过台架中的开口时监测输送机的位置; 确定输送机是否已经停留在台架的多于一个旋转位置，并且在一次旋转之后丢弃冗余数据，如果输送机已经静止多于一个机架旋转，则可选择地关闭X射线管，并且如果这样，防止输送机再次移动直到管被打开并且稳定，将输送机在每个x射线源位置的位置输入到重建算法中; 并呈现对象的图像。

7. 发明申请

US20070140415A1 Apparatus and method for providing an orthographic projection from helical scan data 有权
标题翻译：从螺旋扫描数据提供正投影的装置和方法
公开(公告)号：US20070140415A1
公开(公告)日：2007-06-21
申请号：US11295954
申请日：2005-12-07
申请人： Walter Garms , Ugo Girolamo , Matthew Merzbacher
发明人： Walter Garms , Ugo Girolamo , Matthew Merzbacher
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01T1/2985 , A61B6/027 , G01V5/005 , Y10S378/901
摘要： An apparatus and method for providing a projection image directly from data acquired by a CT scanner, the method comprising: acquiring an amount of data corresponding to an entire object that is scanned by the CT scanner, wherein the amount of data is generated by an x-ray source that projects a fan beam of x-rays toward a detector array on an opposite side of a gantry of the CT scanner as the object is passed through an opening in the gantry; selecting an imaging plane, the imaging plane corresponding to a view of the object; dividing the imaging plane into a plurality of rows and columns, thus creating a grid of points corresponding to the imaging plane; determining, for each point in the grid, a data point from the acquired data corresponding to an x-ray source position wherein a ray from the x-ray source to the grid point is closest to a perpendicular orientation with respect to the imaging plane, and a detector position where the ray intersects the detector array; and presenting a projection image corresponding to the selected imaging plane, wherein the projection image comprises a plurality of projection points and each projection point in the projection image is a converted value of the data points of the data points of the acquired data.
摘要翻译：一种用于从CT扫描器获取的数据直接提供投影图像的装置和方法，所述方法包括：获取与由CT扫描仪扫描的整个对象相对应的数据量，其中数据量由x 射线源，当物体通过台架中的开口时，将X射线的扇形束投射到CT扫描仪的台架的相对侧上的检测器阵列; 选择成像平面，所述成像平面对应于所述物体的视图; 将成像平面分成多个行和列，从而产生与成像平面相对应的点的网格; 根据所获取的与X射线源位置相对应的数据，确定来自所述网格中的每个点的数据点，其中从所述X射线源到所述网格点的射线最靠近所述成像平面的垂直取向，以及光线与检测器阵列相交的检测器位置; 并且呈现与所选择的成像平面对应的投影图像，其中所述投影图像包括多个投影点，并且投影图像中的每个投影点是所获取的数据的数据点的数据点的转换值。

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