公开(公告)号：US20110243413A1

公开(公告)日：2011-10-06

申请号：US12750050

申请日：2010-03-30

Applicant: John Eric Tkaczyk ,  David Allen Langan ,  Samit Kumar Basu ,  Xiaoye Wu ,  Bruno Kristiaan Bernard De Man ,  Jeffrey Seymour Gordon

Inventor： John Eric Tkaczyk ,  David Allen Langan ,  Samit Kumar Basu ,  Xiaoye Wu ,  Bruno Kristiaan Bernard De Man ,  Jeffrey Seymour Gordon

IPC: G06K9/00 ,  G01N23/04 ,  H05G1/60

CPC classification number: A61B6/4035 ,  A61B6/032 ,  A61B6/405 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/488 ,  A61B6/542

Abstract: A technique for acquiring desired image data in an imaging system comprising at least one radiation source and a detector is described. Initially, preliminary image data corresponding to an object may be acquired. Further, at least one parameter associated with the radiation source and corresponding to a particular view angle of the radiation source may be determined based on the preliminary image data and a priori information. Similarly, at least one parameter associated with the detector and corresponding to the particular view angle may be determined based on a priori information and the preliminary image data. Efficient operating modes of the radiation source and the detector corresponding to the particular view angle may be selected based on the determined parameters to achieve a desired system performance. Subsequently, the final image data may be acquired using the selected operating modes of the radiation source and the detector.

Abstract translation: 描述了在包括至少一个辐射源和检测器的成像系统中获取所需图像数据的技术。 首先，可以获取与对象相对应的初步图像数据。 此外，可以基于初步图像数据和先验信息来确定与辐射源相关联并且对应于辐射源的特定视角的至少一个参数。 类似地，可以基于先验信息和初步图像数据来确定与检测器相关联并且对应于特定视角的至少一个参数。 可以基于确定的参数来选择对应于特定视角的辐射源和检测器的有效操作模式以实现期望的系统性能。 随后，可以使用所选择的辐射源和检测器的操作模式来获取最终图像数据。

公开(公告)号：US20100230242A1

公开(公告)日：2010-09-16

申请号：US12401907

申请日：2009-03-11

Applicant: Samit Kumar Basu ,  Pierfrancesco Landolfi ,  Sussan Pourjavid-Granfors ,  Eugene Alex Ingerman ,  Jian Gao ,  Mikhail Kourinny ,  Francois Robert Gaultier

Inventor： Samit Kumar Basu ,  Pierfrancesco Landolfi ,  Sussan Pourjavid-Granfors ,  Eugene Alex Ingerman ,  Jian Gao ,  Mikhail Kourinny ,  Francois Robert Gaultier

IPC: B65G47/00 ,  G01J5/00

CPC classification number: G01N23/046 ,  G01N2223/419 ,  G01V5/0008

Abstract: A method for scanning a stream of objects includes conveying the stream of objects through a scanning system using a conveyor, marking a leading edge position of an object within the stream of objects with respect to a first known distance between a sensor and a start of a scan range, and recording data associated with the object when the leading edge position reaches the start of the scan range. The method also includes marking a trailing edge position of the object with respect to a second known distance between the sensor and an end of the scan range, halting recording of the data when the trailing edge reaches the end of the scan range, and generating a three-dimensional image of the object based on the recorded data.

Abstract translation: 用于扫描物体流的方法包括通过使用传送器的扫描系统传送物体流，相对于传感器和开始物体之间的第一已知距离，在物体流内标记物体的前缘位置 扫描范围，以及当前沿位置到达扫描范围的开始时与物体相关联的记录数据。 所述方法还包括相对于所述传感器与所述扫描范围的结束之间的第二已知距离来标记所述物体的后缘位置，当所述后沿到达所述扫描范围的终点时停止所述数据的记录，以及产生 基于记录数据的对象的三维图像。

公开(公告)号：US07551708B2

公开(公告)日：2009-06-23

申请号：US11672137

申请日：2007-02-07

Applicant: Samit Kumar Basu ,  Bruno Kristiaan Bernard DeMan

Inventor： Samit Kumar Basu ,  Bruno Kristiaan Bernard DeMan

IPC: A61B6/00

CPC classification number: G01N23/046 ,  G01N2223/419

Abstract: A new method extends iterated coordinate descent (“ICD”)—an optimization method employed in some statistical reconstruction algorithms—to handle material decomposition (“MD”) for energy discriminating computed tomography (“EDCT”) acquisitions.

Abstract translation: 一种新的方法扩展了迭代坐标下降（“ICD”） - 一些统计重建算法中采用的优化方法，用于处理能量鉴别计算机断层扫描（“EDCT”）采集的材料分解（“MD”）。

公开(公告)号：US07379525B2

公开(公告)日：2008-05-27

申请号：US11011358

申请日：2004-12-15

Applicant: Samit Kumar Basu ,  Bruno Kristiaan Bernard De Man

Inventor： Samit Kumar Basu ,  Bruno Kristiaan Bernard De Man

IPC: A61B6/03

CPC classification number: A61B6/032 ,  A61B6/027 ,  G01N23/046 ,  G01N2223/3304 ,  G01N2223/419 ,  Y10S378/901

Abstract: A method for reconstructing cone-beam projection data is provided. The method comprises scanning an object in helical mode, wherein the scanning comprises obtaining cone-beam projection data. The method further comprises processing the cone-beam projection data along a plurality of data filtering curves. The processing includes processing the cone-beam projection data along a portion of the data filtering curves that extends outside of a physical detector area to a virtual detector area. Then, the method comprises using the processed cone-beam projection data in the generation of a reconstructed image of the object.

Abstract translation: 提供了一种重建锥束投影数据的方法。 该方法包括以螺旋模式扫描物体，其中扫描包括获得锥束投影数据。 该方法还包括沿多个数据滤波曲线处理锥形束投影数据。 该处理包括沿着在物理检测器区域外延伸到虚拟检测器区域的数据滤波曲线的一部分处理锥形束投影数据。 然后，该方法包括在生成对象的重建图像时使用经处理的锥束投影数据。

公开(公告)号：US07362843B2

公开(公告)日：2008-04-22

申请号：US10948663

申请日：2004-09-23

Applicant: Samit Kumar Basu ,  Bruno Kristiaan Bernard Deman

Inventor： Samit Kumar Basu ,  Bruno Kristiaan Bernard Deman

IPC: A61B6/03

CPC classification number: G06T11/005 ,  G06T2211/424 ,  Y10S378/901

Abstract: A method for reconstructing image data from acquired tomographic projection data measurements is provided. The projection data measurements comprise one or more missing data measurements. The method comprises generating a coarse-resolution projection data set from the acquired projection data measurements and performing an iterative reconstruction on the coarse-resolution projection data set to generate a coarse-resolution reconstructed data set. Then, the method comprises reprojecting the coarse-resolution reconstructed data set to obtain one or more estimates for the one or more missing data measurements. The one or more estimated missing data measurements are then recombined with the acquired projection data measurements, to generate a recombined data set. Then, a direct reconstruction algorithm is applied to the recombined data set to generate the reconstructed image data.

Abstract translation: 提供了一种从获取的断层摄影投影数据测量重建图像数据的方法。 投影数据测量包括一个或多个丢失的数据测量。 该方法包括从所获取的投影数据测量中产生粗分辨率投影数据集，并对粗分辨率投影数据集执行迭代重建以产生粗分辨率重建数据集。 然后，该方法包括重新投影粗分辨率重构数据集以获得一个或多个丢失数据测量的一个或多个估计。 然后将一个或多个估计的丢失数据测量与所获取的投影数据测量重组，以产生重组数据集。 然后，将直接重建算法应用于重组数据集，以生成重构图像数据。

公开(公告)号：US20080056437A1

公开(公告)日：2008-03-06

申请号：US11725892

申请日：2007-03-20

Applicant: Jed Douglas Pack ,  Zhye Yin ,  Samit Kumar Basu ,  John Charles Hill ,  Peter Michael Edic

Inventor： Jed Douglas Pack ,  Zhye Yin ,  Samit Kumar Basu ,  John Charles Hill ,  Peter Michael Edic

IPC: G01N23/00

CPC classification number: G01T1/2985 ,  A61B6/027

Abstract: Systems and methods are provided for acquiring and reconstructing projection data using a computed tomography (CT) system having stationary distributed X-ray sources and detector arrays. In one embodiment, a non-sequential activation of X-ray source locations on an annular source is employed to acquire projection data. In another embodiment, a distributed source is tilted relative to an axis of the scanner to acquire the projection data. In a further embodiment, a plurality of X-ray source locations on an annular source are activated such that the aggregated signals correspond to two or more sets of spatially interleaved helical scan data.

Abstract translation: 提供了使用具有固定分布式X射线源和检测器阵列的计算机断层摄影（CT）系统来获取和重建投影数据的系统和方法。 在一个实施例中，使用在环形源上的X射线源位置的非顺序激活来获取投影数据。 在另一个实施例中，分布式源相对于扫描器的轴线倾斜以获取投影数据。 在另一实施例中，环形源上的多个X射线源位置被激活，使得聚集的信号对应于两组或多组空间交错的螺旋扫描数据。

公开(公告)号：US20080056435A1

公开(公告)日：2008-03-06

申请号：US11726023

申请日：2007-03-20

Applicant: Samit Kumar Basu ,  Bruno De Man ,  Jed Douglas Pack ,  Xiaoye Wu ,  Zhye Yin ,  Peter Michael Edic

Inventor： Samit Kumar Basu ,  Bruno De Man ,  Jed Douglas Pack ,  Xiaoye Wu ,  Zhye Yin ,  Peter Michael Edic

IPC: G01N23/00

CPC classification number: G01T1/2985 ,  A61B6/027

Abstract: Systems and methods are provided for acquiring and reconstructing projection data that is mathematically complete or sufficient using a computed tomography (CT) system having stationary distributed X-ray sources and detector arrays. In one embodiment, a distributed source is provided as arcuate segments offset in the X-Y plane and along the Z-axis.

Abstract translation: 提供了系统和方法，用于使用具有固定分布式X射线源和检测器阵列的计算机断层摄影（CT）系统来获取和重建数学上完整或足够的投影数据。 在一个实施例中，分布式源被提供为在X-Y平面和Z轴上偏移的弧形段。

公开(公告)号：US20070297656A1

公开(公告)日：2007-12-27

申请号：US11474613

申请日：2006-06-26

Applicant: Bruno DeMan ,  Samit Kumar Basu

Inventor： Bruno DeMan ,  Samit Kumar Basu

IPC: G06K9/00 ,  G06K9/40

CPC classification number: G01N23/046 ,  A61B6/03 ,  G01N2223/419 ,  G06T11/006 ,  G06T2211/424

Abstract: Methods are provided for iteratively reconstructing an image signal to generate a reconstructed image signal. In one embodiment, sub-iterations of each iteration are performed on pixel subsets. The pixel subsets may be composed of pixels neighboring or spatially separated pixel. In a further embodiment, each iteration is performed at a different resolution. Systems and computer routines for processing image data iteratively in accordance with these techniques are also provided.

Abstract translation: 提供了用于迭代重建图像信号以产生重建图像信号的方法。 在一个实施例中，对像素子集执行每次迭代的子迭代。 像素子集可以由相邻或空间分离的像素的像素组成。 在另一个实施例中，每次迭代以不同的分辨率执行。 还提供了用于根据这些技术迭代地处理图像数据的系统和计算机程序。

公开(公告)号：US07254209B2

公开(公告)日：2007-08-07

申请号：US10707031

申请日：2003-11-17

Applicant: Qi Zhao ,  Chunhe Gong ,  Bruno De Man ,  Samit Kumar Basu ,  Fracis Howard Little

Inventor： Qi Zhao ,  Chunhe Gong ,  Bruno De Man ,  Samit Kumar Basu ,  Fracis Howard Little

IPC: A61B6/03

CPC classification number: G06T11/006 ,  G06T2211/424 ,  Y10S378/901

Abstract: A computed tomography (CT) reconstruction method includes implementing an iterative image reconstruction process for CT metrology of an object, wherein the iterative reconstruction process utilizes accurate forward projection. During each of a plurality of iterations, a reconstructed image is constrained by utilizing prior outer edge information obtained from a modality in addition to CT, and then transformed to a projection domain so as to generate a calculated sinogram. A correction image is determined based on the calculated sinogram and a measured sinogram.

Abstract translation: 计算机断层摄影（CT）重建方法包括对物体的CT计量实施迭代图像重建过程，其中迭代重建过程利用精确的向前投影。 在多个迭代中的每个迭代期间，通过利用除了CT之外的从模态获得的先前的外部边缘信息来约束重建的图像，然后将其转换为投影域，以便产生计算的正弦图。 基于计算的正弦图和测得的正弦图确定校正图像。

公开(公告)号：US07082180B2

公开(公告)日：2006-07-25

申请号：US10724461

申请日：2003-11-26

Applicant: Peter Michael Edic ,  Samit Kumar Basu

Inventor： Peter Michael Edic ,  Samit Kumar Basu

IPC: A61B6/00

CPC classification number: A61B6/507 ,  A61B6/032 ,  A61B6/481 ,  A61B6/488 ,  A61B6/5217 ,  Y10S378/901

Abstract: A method for computing volumetric perfusion in a spatially stationary organ using a computed tomography (CT) imaging system includes positioning an area detector such that the area detector encompasses a spatially stationary organ within the field of view of the imaging system for all view angles, operating the CT imaging system in a cine mode to acquire a plurality of projection data representative of the tissue dynamics in the spatially stationary organ, processing the projection data, temporally filtering respective signals from volume elements of the reconstructions of the projection data which are representative of the tissue dynamics and computing the volumetric perfusion in the organ using the temporally filtered signals from volume elements.

Abstract translation: 使用计算机断层摄影（CT）成像系统计算空间静止器官中的体积灌注的方法包括定位区域检测器，使得区域检测器在成像系统的视野范围内包含用于所有视角的空间静止器官，操作 CT成像系统以电影模式获取表示空间静止器官中的组织动力学的多个投影数据，处理投影数据，对代表投影数据的投影数据的重建的体积元素的各个信号进行时间滤波 组织动力学和使用来自体积元素的时间滤波信号计算器官中的体积灌注。