公开(公告)号：US6084937A

公开(公告)日：2000-07-04

申请号：US162303

申请日：1998-09-28

申请人： Kwok C. Tam ,  Ali Bani-Hashemi

发明人： Kwok C. Tam ,  Ali Bani-Hashemi

IPC分类号： A61B6/03 ,  G06T1/00 ,  G06T5/00 ,  G06T11/00 ,  G06T17/00 ,  H05G1/61

CPC分类号： G06T11/006 ,  A61B6/032 ,  A61B6/466 ,  A61B6/027 ,  G06T2211/421 ,  Y10S378/901

摘要： A method and apparatus for three dimensional (3D) computerized tomographic (CT) imaging of a region-of-interest (ROI) in an object, wherein image reconstruction processing is applied to a plurality of sets of 2D cone beam projection data, each set being acquired on a 2D detector at a corresponding plurality of scan path source positions. A first image reconstruction processing step comprises applying a mask to each set of the projection data so that data inside the boundaries of each mask form a corresponding plurality of masked 2D data sets. Next, the data inside each masked 2D data set is filtered along a plurality of parallel lines formed therein, to generate a corresponding plurality of filtered 2D data sets. Each filtered 2D data set corresponds to a calculation of a first estimate of Radon derivative data determined from a given set of the 2D cone beam projection data. The next step comprises adaptively developing 2D correction data for each of the first estimates of Radon derivative data. The final step comprises combining each filtered 2D data set and the adaptively determined 2D correction data calculated therefore, in a weighted 3D backprojection manner into a 3D space, thereby reconstructing a 3D image of the ROI in the object.

摘要翻译： 一种用于对象中感兴趣区域（ROI）的三维（3D）计算机断层摄影（CT）成像的方法和装置，其中将图像重建处理应用于多组2D锥形束投影数据，每组 在相应的多个扫描路径源位置上在2D检测器上获取。 第一图像重建处理步骤包括将掩模应用于每组投影数据，使得每个掩模的边界内的数据形成对应的多个被掩蔽的2D数据集。 接下来，沿着形成在其中的多条平行线对每个被屏蔽的2D数据集内的数据进行滤波，以产生相应的多个经滤波的2D数据集。 每个滤波的2D数据集对应于从给定的2D锥形束投影数据集确定的氡导数数据的第一估计的计算。 下一步包括对Radon导数数据的第一估计中的每一个自适应地开发2D校正数据。 最后一步包括将每个经滤波的2D数据集合和由此计算的自适应确定的2D校正数据以加权的3D反投影方式组合成3D空间，由此重建对象中的ROI的3D图像。

公开(公告)号：US09789337B2

公开(公告)日：2017-10-17

申请号：US13269324

申请日：2011-10-07

申请人： Ali Bani-Hashemi

发明人： Ali Bani-Hashemi

IPC分类号： A61B5/055 ,  A61N5/10

CPC分类号： A61N5/1039 ,  A61B5/055 ,  A61N2005/105 ,  A61N2005/1054 ,  A61N2005/1091 ,  A61N2005/1094

摘要： A system includes acquisition of a first three-dimensional image of a patient volume using a magnetic resonance imaging scanner, acquisition of a second three-dimensional image of the patient volume using cone beam radiation emitted by the linear accelerator, and generation of a radiation treatment plan based on the first image and the second image.

公开(公告)号：US08923476B2

公开(公告)日：2014-12-30

申请号：US13369217

申请日：2012-02-08

申请人： Ajay Paidi ,  Jonathan Maltz ,  Ali Bani-Hashemi

发明人： Ajay Paidi ,  Jonathan Maltz ,  Ali Bani-Hashemi

IPC分类号： A61B6/00 ,  G06T11/00

CPC分类号： G06T11/006 ,  G06T2211/408 ,  G06T2211/436

摘要： Some aspects include acquisition of a first plurality of projection images of a volume using a megavoltage x-ray source, each of the first plurality of projection images associated with a respective one of a first plurality of locations of the megavoltage x-ray source, acquisition of a second plurality of projection images of the volume using a kilovoltage x-ray source, each of the second plurality of projection images associated with a respective one of a second plurality of locations of the kilovoltage x-ray source, and performance of digital tomosynthesis reconstruction to generate a three-dimensional image of the volume based on the first plurality of projection images and the second plurality of projection images. The first axis may be perpendicular to the second axis.

摘要翻译： 一些方面包括使用兆伏级X射线源获取体积的第一多个投影图像，第一多个投影图像中的每一个与兆伏级x射线源的第一多个位置中的相应一个相关联，获取 使用千伏X射线源的体积的第二多个投影图像中的每一个与所述千伏X射线源的第二多个位置中的相应一个相关联的第二多个投影图像以及数字断层合成的执行 重构以基于第一多个投影图像和第二多个投影图像生成体积的三维图像。 第一轴线可以垂直于第二轴线。

公开(公告)号：US08861672B2

公开(公告)日：2014-10-14

申请号：US13298189

申请日：2011-11-16

申请人： Jonathan S. Maltz ,  Supratik Bose ,  Ali Bani-Hashemi ,  Ajay Paidi

发明人： Jonathan S. Maltz ,  Supratik Bose ,  Ali Bani-Hashemi ,  Ajay Paidi

IPC分类号： A61B6/03 ,  A61B6/00 ,  A61N5/10

CPC分类号： A61N5/1049 ,  A61B6/032 ,  A61B6/488 ,  A61B6/5223 ,  A61N2005/105 ,  A61N2005/1061

摘要： A system includes acquisition of a three-dimensional computed tomography image of a patient volume at a computed tomography scanner, acquisition of projection images of the patient volume located at an isocenter of a linear accelerator, and determination of a transformation between a coordinate system of the linear accelerator and a coordinate system of the three-dimensional computed tomography image based on the projection images.

摘要翻译： 一种系统包括在计算机断层摄影扫描仪中获取患者体积的三维计算机断层摄影图像，获取位于线性加速器的等角点处的患者体积的投影图像，以及确定坐标系的坐标系 线性加速器和基于投影图像的三维计算机断层摄影图像的坐标系。

公开(公告)号：US08582719B2

公开(公告)日：2013-11-12

申请号：US13081441

申请日：2011-04-06

申请人： Ali Bani-Hashemi ,  Jonathan Maltz

发明人： Ali Bani-Hashemi ,  Jonathan Maltz

IPC分类号： A61B6/02 ,  A61B6/00

CPC分类号： A61B6/025 ,  A61B6/027 ,  A61B6/4007 ,  A61B6/54 ,  A61N2005/1061

摘要： A system and method for tomosynthesis, the method including emitting a respective imaging x-ray from each of a plurality of imaging x-ray sources disposed in a fixed relation with respect to one another, acquiring x-ray absorption projections of an object, each of the x-ray absorption projections associated with an imaging x-ray emitted by a respective one of the plurality of imaging x-ray sources, and performing digital tomosynthesis using the x-ray absorption projections to generate a cross-sectional image of the object.

摘要翻译： 一种用于层析合成的系统和方法，所述方法包括从以相对于彼此固定关系设置的多个成像x射线源中的每一个发射相应的成像x射线，获取物体的x射线吸收投影，每个 与由所述多个成像x射线源中的相应一个发射的成像x射线相关联的X射线吸收投影，以及使用所述x射线吸收投影进行数字断层合成以产生所述物体的横截面图像 。

公开(公告)号：US20130090547A1

公开(公告)日：2013-04-11

申请号：US13269324

申请日：2011-10-07

申请人： Ali Bani-Hashemi

发明人： Ali Bani-Hashemi

IPC分类号： A61B5/055

CPC分类号： A61N5/1039 ,  A61B5/055 ,  A61N2005/105 ,  A61N2005/1054 ,  A61N2005/1091 ,  A61N2005/1094

摘要： A system includes acquisition of a first three-dimensional image of a patient volume using a magnetic resonance imaging scanner, acquisition of a second three-dimensional image of the patient volume using cone beam radiation emitted by the linear accelerator, and generation of a radiation treatment plan based on the first image and the second image.

摘要翻译： 一种系统包括使用磁共振成像扫描器获取患者体积的第一立体图像，使用由线性加速器发射的锥形束辐射获取患者体积的第二三维图像，以及产生放射治疗 基于第一图像和第二图像计划。

公开(公告)号：US20070025509A1

公开(公告)日：2007-02-01

申请号：US11181339

申请日：2005-07-13

申请人： Geordi Pang ,  Ali Bani-Hashemi ,  John Rowlands

发明人： Geordi Pang ,  Ali Bani-Hashemi ,  John Rowlands

IPC分类号： A61N5/10

CPC分类号： A61N5/1049 ,  A61B6/025 ,  A61B6/5288 ,  A61B6/583 ,  A61N5/1037 ,  A61N2005/1061

摘要： A 4-dimensional digital tomosynthesis system includes an x-ray source, an x-ray detector and a processor. The x-ray source is suitable for emitting x-ray beams to an object with a periodic motion. The periodic motion is divided into (n+1) time intervals, n being a positive integer. Each of the (n+1) time intervals is associated with a time instance ti, i=0, 1, 2, . . . , n. The x-ray detector is coupled to the x-ray source for acquiring projection radiographs of the object at each time instance ti for each scan angle based on the x-ray beams. The processor is communicatively coupled to the x-ray source and the x-ray detector for controlling the x-ray source and processing data received from the x-ray detector such that all projection radiographs acquired from all scan angles for each time instance ti are reconstructed and (n+1) sets of cross sections of the object are obtained. The cross section is either a coronal cross section or a sagittal cross section. Each of the (n+1) sets of cross sections is for a different time instance ti.

摘要翻译： 4维数字断层合成系统包括x射线源，x射线检测器和处理器。 x射线源适合于向具有周期运动的物体发射X射线束。 周期运动分为（n + 1）个时间间隔，n为正整数。 （n + 1）个时间间隔中的每一个与时间实例t i i i i，i = 0,1,2，...相关联。 。 。 ，n。 x射线检测器耦合到x射线源，用于基于X射线束针对每个扫描角度的每个时间实例t 1采集物体的投影射线照片。 处理器通信地耦合到x射线源和X射线检测器，用于控制x射线源和从x射线检测器接收的处理数据，使得对于每个时间t t从所有扫描角度获取的所有投影射线照片， SUB＆gt; i＆lt; i＆gt;被重构，并且获得对象的（n + 1）个横截面集合。 横截面是冠状截面或矢状截面。 第（n + 1）组横截面中的每一个都是用于不同的时间实例t 。