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    • 1. 发明授权
    • Acquisition of projection images for tomosynthesis
    • 获取用于层析合成的投影图像
    • US08923476B2
    • 2014-12-30
    • US13369217
    • 2012-02-08
    • Ajay PaidiJonathan MaltzAli Bani-Hashemi
    • Ajay PaidiJonathan MaltzAli Bani-Hashemi
    • A61B6/00G06T11/00
    • G06T11/006G06T2211/408G06T2211/436
    • 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.
    • 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。
    • 3. 发明申请
    • Acquisition of Projection Images for Tomosynthesis
    • 获取用于重合成的投影图像
    • US20120201345A1
    • 2012-08-09
    • US13369217
    • 2012-02-08
    • Ajay PaidiJonathan MaltzAli Bani-Hashemi
    • Ajay PaidiJonathan MaltzAli Bani-Hashemi
    • A61B6/03
    • G06T11/006G06T2211/408G06T2211/436
    • 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.
    • 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。
    • 4. 发明授权
    • Acquisition of projection images for tomosynthesis
    • 获取用于层析合成的投影图像
    • US08254518B2
    • 2012-08-28
    • US12573814
    • 2009-10-05
    • Ajay PaidiJonathan MaltzAli Bani-Hashemi
    • Ajay PaidiJonathan MaltzAli Bani-Hashemi
    • H05G1/60
    • G06T11/006G06T2211/408G06T2211/436
    • 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.
    • 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性能 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。
    • 5. 发明申请
    • Acquisition of Projection Images for Tomosynthesis
    • 获取用于重合成的投影图像
    • US20110080996A1
    • 2011-04-07
    • US12573814
    • 2009-10-05
    • Ajay PaidiJonathan MaltzAli Bani-Hashemi
    • Ajay PaidiJonathan MaltzAli Bani-Hashemi
    • H05G1/60
    • G06T11/006G06T2211/408G06T2211/436
    • 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.In some aspects, the first plurality of projection images are acquired using a first plurality of imaging x-ray sources, each one of the first plurality of imaging x-ray sources disposed in a fixed relation with respect to one another and to a first axis and to emit a respective imaging x-ray, and each of the first plurality of projection images associated with an imaging x-ray emitted by a respective one of the first plurality of imaging x-ray sources. Similarly, the second plurality of projection images may be acquired using a second plurality of imaging x-ray sources, each one of the second plurality of imaging x-ray sources disposed in a fixed relation with respect to one another and to a second axis and to emit a respective imaging x-ray, and each of the second plurality of projection images associated with an imaging x-ray emitted by a respective one of the second plurality of imaging x-ray sources.
    • 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。 在一些方面,使用第一多个成像x射线源获取第一多个投影图像,第一组多个成像x射线源中的每一个相对于彼此以固定关系设置,并且与第一轴 并且发射相应的成像x射线,并且所述第一多个投影图像中的每一个与由所述第一多个成像x射线源中的相应一个成像x射线源发射的成像x射线相关联。 类似地,可以使用第二多个成像x射线源获取第二多个投影图像,第二多个成像x射线源中的每一个相对于彼此和第二轴以固定关系设置,并且 以发射相应的成像x射线,并且所述第二多个投影图像中的每一个与由所述第二多个成像x射线源中的相应一个成像x射线源发射的成像x射线相关联。
    • 9. 发明申请
    • 4-dimensional digital tomosynthesis and its applications in radiation therapy
    • 4维数字断层合成及其在放射治疗中的应用
    • US20070025509A1
    • 2007-02-01
    • US11181339
    • 2005-07-13
    • Geordi PangAli Bani-HashemiJohn Rowlands
    • Geordi PangAli Bani-HashemiJohn Rowlands
    • A61N5/10
    • A61N5/1049A61B6/025A61B6/5288A61B6/583A61N5/1037A61N2005/1061
    • 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.
    • 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> i< i>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
    • 10. 发明申请
    • Virtual digital shape projector
    • 虚拟数字投影机
    • US20060250586A1
    • 2006-11-09
    • US11123747
    • 2005-05-04
    • Ali Bani-Hashemi
    • Ali Bani-Hashemi
    • G03B21/00
    • G03B21/00A61N2005/1056G03B15/02
    • A projection system for projecting a shape onto a scene (e.g., the surface of an object, the body of a patient, or the like) so that the shape appears to be projected via a light beam emanating from a desired source location includes two or more projection assemblies for projecting planes of light which intersect the scene to form light stripes on the scene. The intersection of the light stripes defines a point of light projected onto the scene so that the point of light appears to emanate from the source location. The first and second projection assemblies rotate about first and second axes which extend through the source location for controlling the position of the point of light on the scene.
    • 用于将形状投影到场景(例如,物体的表面,患者身体等上)的投影系统,使得形状看起来通过从期望的源位置发出的光束投影包括两个或 更多的投影组件用于投射与场景相交的光的平面,以在场景上形成光条纹。 光条纹的交点定义投影到场景上的光点,使得光点看起来从源位置发出。 第一和第二突出组件围绕延伸穿过源位置的第一和第二轴线旋转,以控制场景上的光点的位置。