公开(公告)号：US20100215144A1

公开(公告)日：2010-08-26

申请号：US12393591

申请日：2009-02-26

Applicant: Samit Kumar Basu ,  Jian Gao ,  Steven Leslie Hills ,  Eugene Alex Ingerman ,  Pierfrancesco Landolfi ,  Sussan Pourjavid-Granfors

Inventor： Samit Kumar Basu ,  Jian Gao ,  Steven Leslie Hills ,  Eugene Alex Ingerman ,  Pierfrancesco Landolfi ,  Sussan Pourjavid-Granfors

IPC: H05G1/60

CPC classification number: G01V5/005 ,  A61B6/027

Abstract: A method for generating an image of an object using a scanning system includes performing a first portion of a scan in a first scanning mode to acquire a first dataset, receiving a halt command for a conveyor within the scanning system, decelerating the conveyor to a halt based on the halt command using a conveyor controller, and, when the object is present within an examination region after the conveyor has halted, performing a second portion of the scan in a second scanning mode to acquire a second dataset. The second scanning mode is different than the first scanning mode. The method also includes reconstructing the first dataset using a first reconstruction algorithm and reconstructing the second dataset using a second reconstruction algorithm. The second reconstruction algorithm is different than the first reconstruction algorithm. The image is generated using the first reconstructed dataset and the second reconstructed dataset.

Abstract translation: 使用扫描系统生成物体的图像的方法包括以第一扫描模式执行扫描的第一部分以获取第一数据集，在扫描系统内接收用于输送机的停止命令，使输送机减速停止 基于使用输送机控制器的停止命令，并且当所述物体在所述输送机停止之后存在于检查区域内时，以第二扫描模式执行所述扫描的第二部分以获取第二数据集。 第二扫描模式与第一扫描模式不同。 该方法还包括使用第一重建算法重构第一数据集，并使用第二重构算法重构第二数据集。 第二种重建算法与第一种重建算法不同。 使用第一重建数据集和第二重构数据集生成图像。

公开(公告)号：US20100215143A1

公开(公告)日：2010-08-26

申请号：US12391470

申请日：2009-02-24

Applicant: Samit Kumar BASU ,  Pierfrancesco LANDOLFI ,  Eugene Alex INGERMAN ,  Jian GAO ,  Mikhail KOURINNY

Inventor： Samit Kumar BASU ,  Pierfrancesco LANDOLFI ,  Eugene Alex INGERMAN ,  Jian GAO ,  Mikhail KOURINNY

IPC: H05G1/60 ,  G06K9/00

CPC classification number: G01N23/046 ,  G01N2223/419

Abstract: A method for scanning a stream of objects includes continuously acquiring raw data of the stream of objects using an X-ray system including a detector, determining a leading edge and a trailing edge of a first object of the stream of objects from the raw data acquired by the detector using a control system, processing acquired raw data of the first object based on the determined leading edge and the determined trailing edge using the control system, and reconstructing an image of the first object using at least the processed raw data. A system configured to perform the method is also disclosed.

Abstract translation: 用于扫描对象流的方法包括使用包括检测器的X射线系统连续获取对象流的原始数据，从获取的原始数据确定对象流的第一对象的前沿和后沿 通过使用控制系统的检测器，使用所述控制系统，基于所确定的前沿和所确定的后沿来处理所获取的所述第一对象的原始数据，以及使用至少所述经处理的原始数据来重构所述第一对象的图像。 还公开了一种配置为执行该方法的系统。

公开(公告)号：US07760848B2

公开(公告)日：2010-07-20

申请号：US11530288

申请日：2006-09-08

Applicant: Bruno Kristiaan Bernard DeMan ,  Samit Kumar Basu

Inventor： Bruno Kristiaan Bernard DeMan ,  Samit Kumar Basu

IPC: A61B6/03

CPC classification number: G01N23/20 ,  A61B6/032 ,  A61B6/482 ,  Y10S378/901

Abstract: A method for generating a multi-spectral image of an object is provided. The method comprises acquiring measurement data at a plurality of X-ray energy levels and defining a plurality of image voxels in one or more regions comprising the object. The method then comprises obtaining prior information associated with a plurality of image voxels comprising the object. The prior information is defined by a joint probability density function (PDF) between a plurality of basis components. The method further comprises reconstructing the measurement data to generate a multi-spectral reconstructed image of the object based on the prior information.

Abstract translation: 提供了一种用于产生对象的多光谱图像的方法。 该方法包括以多个X射线能级获取测量数据，并在包括对象的一个​​或多个区域中定义多个图像体素。 该方法然后包括获得与包括对象的多个图像体素相关联的先前信息。 先验信息由多个基础分量之间的联合概率密度函数（PDF）定义。 该方法还包括根据先前的信息重建测量数据以产生对象的多光谱重建图像。

公开(公告)号：US07696483B2

公开(公告)日：2010-04-13

申请号：US11837328

申请日：2007-08-10

Applicant: John Eric Tkaczyk ,  Samit Kumar Basu ,  Wen Li ,  Yanfeng Du

Inventor： John Eric Tkaczyk ,  Samit Kumar Basu ,  Wen Li ,  Yanfeng Du

IPC: G01T1/24

CPC classification number: G01T1/171 ,  G01T1/247 ,  G01T1/249

Abstract: A photon-counting detector includes a direct conversion material and a data acquisition system with a first comparator having a first signal level threshold indicative of a noise level of a spectrum of photons, the first comparator configured to output a count when the electrical signal level exceeds the first signal level threshold, and a second comparator having a second signal level threshold indicative of the maximum energy of the spectrum of photons, the second comparator configured to output a count when the electrical signal exceeds the second signal level threshold where a photon count is determined based on the counts from the first and second comparators.

Abstract translation: 光子计数检测器包括直接转换材料和具有第一比较器的数据采集系统，第一比较器具有指示光子谱的噪声电平的第一信号电平阈值，第一比较器被配置为当电信号电平超过时输出计数 第一信号电平阈值和具有指示光子谱的最大能量的第二信号电平阈值的第二比较器，第二比较器被配置为当电信号超过第二信号电平阈值时输出计数，其中光子计数是 基于来自第一和第二比较器的计数确定。

公开(公告)号：US07606347B2

公开(公告)日：2009-10-20

申请号：US11744292

申请日：2007-05-04

Applicant: John Eric Tkaczyk ,  Jonathan D. Short ,  James Wilson Rose ,  Xiaoye Wu ,  Samit Kumar Basu

Inventor： John Eric Tkaczyk ,  Jonathan D. Short ,  James Wilson Rose ,  Xiaoye Wu ,  Samit Kumar Basu

IPC: A61B6/03

CPC classification number: A61B6/5205 ,  A61B6/032 ,  A61B6/4291 ,  G01T1/2018 ,  G01T1/242 ,  G01T1/243 ,  G01T1/249

Abstract: A CT detector includes a first detector configured to convert radiographic energy to electrical signals representative of energy sensitive radiographic data and a second detector configured to convert radiographic energy to electrical signals representative of energy sensitive radiographic data and positioned to receive x-rays that pass through the first detector. A logic controller is electrically connected to the first detector and the second detector and is configured to receive a logic output signal from the second detector indicative of an amount of a saturation level of the first detector, compare the logic output signal to a threshold value, and output, based on the comparison, electrical signals from the first detector, the second detector, or a combination thereof to an image chain.

Abstract translation: CT检测器包括：第一检测器，其被配置为将射线照相能量转换成表示能量敏感射线照相数据的电信号;以及第二检测器，被配置为将放射线照相能量转换成表示能量敏感射线照相数据的电信号，并被定位成接收穿过 第一检测器 逻辑控制器电连接到第一检测器和第二检测器，并且被配置为从第二检测器接收指示第一检测器的饱和电平的量的逻辑输出信号，将逻辑输出信号与阈值进行比较， 并且基于比较将来自第一检测器，第二检测器或其组合的电信号输出到图像链。

公开(公告)号：US07386088B2

公开(公告)日：2008-06-10

申请号：US10950786

申请日：2004-09-24

Applicant: Bruno Kristiaan Bernard Deman ,  Samit Kumar Basu

Inventor： Bruno Kristiaan Bernard Deman ,  Samit Kumar Basu

IPC: A61B6/03

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

Abstract: A method for iteratively reconstructing image data acquired by a computed tomography system is provided. The method comprises generating a calculated sinogram from an image estimate and generating an error sinogram based on the calculated sinogram and a measured sinogram. Then, one or more backprojections are performed, each based upon a reconstruction parameter. The reconstruction parameter impacts at least one of convergence speed and computational cost of each iterative step and corresponding reconstruction. A filtering step is performed prior to performing the one or more backprojections. Finally, the initial image is updated by adding corresponding results of the one or more backprojections to the image estimate to obtain the reconstructed image.

Abstract translation: 提供了一种用于迭代重建由计算机断层摄影系统获取的图像数据的方法。 该方法包括从图像估计生成计算出的正弦图，并基于计算的正弦图和测得的正弦图产生误差正弦图。 然后，执行一个或多个反向投影，每个基于重建参数。 重构参数影响每个迭代步骤的收敛速度和计算成本中的至少一个以及相应的重建。 在执行一个或多个反投影之前执行过滤步骤。 最后，通过将一个或多个反向投影的相应结果相加到图像估计来更新初始图像，以获得重建的图像。

公开(公告)号：US20080095300A1

公开(公告)日：2008-04-24

申请号：US11543377

申请日：2006-10-05

Applicant: Stephen Eric Zingelewicz ,  Austars Raymond Schnore ,  Walter Vincent Dixon ,  Samit Kumar Basu ,  Bruno De Man ,  William D. Smith

Inventor： Stephen Eric Zingelewicz ,  Austars Raymond Schnore ,  Walter Vincent Dixon ,  Samit Kumar Basu ,  Bruno De Man ,  William D. Smith

IPC: H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC classification number: G01N23/04 ,  A61B6/032 ,  G06T11/006 ,  G06T15/005 ,  G06T2211/424 ,  G06T2211/428

Abstract: A method and system are provided for processing an acquired image signal in parallel to generate a reconstructed image signal. In one embodiment, a processing component is provided comprising one or more field-programmable gate arrays configured as co-processors. Other aspects of the present technique provide a pipelined processor configured to forward- and back-project image data using the same data path and arithmetic units.

Abstract translation: 提供一种用于并行处理获取的图像信号以产生重建图像信号的方法和系统。 在一个实施例中，提供了包括配置为协处理器的一个或多个现场可编程门阵列的处理组件。 本技术的其它方面提供了一种流水线处理器，其被配置为使用相同的数据路径和算术单元来转发和后投影图像数据。

公开(公告)号：US20080085040A1

公开(公告)日：2008-04-10

申请号：US11543441

申请日：2006-10-05

Applicant: Samit Kumar Basu ,  Bruno De Man

Inventor： Samit Kumar Basu ,  Bruno De Man

IPC: G06K9/00 ,  G06K9/36 ,  G06K9/20

CPC classification number: G06T11/005 ,  G06T2211/424

Abstract: A method and system are provided for iteratively processing an image estimate. In one embodiment, the image estimate is updated with an update image each iteration of processing. In this embodiment, the update image for each iteration is derived based at least in part on a scale image derived from a mask image. The mask image defines a subset of pixels participating in the reconstruction based on an imaged object. The scale image is updated based on a numerator term and a denominator term. The denominator term is based on the mask image. Computer routines for processing image data for processing image data in accordance with these techniques are also provided.

Abstract translation: 提供了一种迭代处理图像估计的方法和系统。 在一个实施例中，每次迭代处理都用更新图像更新图像估计。 在该实施例中，至少部分地基于从掩模图像导出的缩放图像来导出用于每次迭代的更新图像。 掩模图像基于成像对象定义参与重建的像素的子集。 基于分子项和分母项来更新比例图像。 分母项是基于掩模图像。 还提供了用于处理根据这些技术处理图像数据的图像数据的计算机程序。

公开(公告)号：US20080063135A1

公开(公告)日：2008-03-13

申请号：US11530288

申请日：2006-09-08

Applicant: Bruno Kristiaan Bernard DeMan ,  Samit Kumar Basu

Inventor： Bruno Kristiaan Bernard DeMan ,  Samit Kumar Basu

IPC: H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC classification number: G01N23/20 ,  A61B6/032 ,  A61B6/482 ,  Y10S378/901

Abstract: A method for generating a multi-spectral image of an object is provided. The method comprises acquiring measurement data at a plurality of X-ray energy levels and defining a plurality of image voxels in one or more regions comprising the object. The method then comprises obtaining prior information associated with a plurality of image voxels comprising the object. The prior information is defined by a joint probability density function (PDF) between a plurality of basis components. The method further comprises reconstructing the measurement data to generate a multi-spectral reconstructed image of the object based on the prior information.

Abstract translation: 提供了一种用于产生对象的多光谱图像的方法。 该方法包括以多个X射线能级获取测量数据，并在包括对象的一个​​或多个区域中定义多个图像体素。 该方法然后包括获得与包括对象的多个图像体素相关联的先前信息。 先验信息由多个基础分量之间的联合概率密度函数（PDF）定义。 该方法还包括根据先前的信息重建测量数据以产生对象的多光谱重建图像。

公开(公告)号：US07280631B2

公开(公告)日：2007-10-09

申请号：US10816064

申请日：2004-04-01

Applicant: Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu ,  Peter Michael Edic ,  Robert Franklin Senzig ,  William Robert Ross ,  Xiaoye Wu ,  Colin Richard Wilson ,  Mark Ernest Vermilyea ,  Eugene Lino Saragnese

Inventor： Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu ,  Peter Michael Edic ,  Robert Franklin Senzig ,  William Robert Ross ,  Xiaoye Wu ,  Colin Richard Wilson ,  Mark Ernest Vermilyea ,  Eugene Lino Saragnese

IPC: G01N23/00

CPC classification number: A61B6/4275 ,  A61B6/027 ,  A61B6/03 ,  A61B6/032 ,  A61B6/4014 ,  G01N23/046 ,  G01N2223/419 ,  G01T1/2985

Abstract: Configurations for stationary imaging systems are provided. The configurations may include combinations of various types of distributed sources of X-ray radiation, which generally include addressable emitter elements which may be triggered for emission in desired sequences and combinations. The sources may be ring-like, partial ring-like, or line-like (typically along a Z-axis), and so forth. Combinations of these are envisaged. Corresponding detectors may also be full ring detectors or partial ring detectors associated with the sources to provide sufficient coverage of imaging volumes and to provide the desired mathematical completeness of the collected data.

Abstract translation: 提供固定成像系统的配置。 这些配置可以包括各种类型的分布的X射线辐射源的组合，其通常包括可寻址的发射体元件，其可以以期望的顺序和组合被发射。 源可以是环状，部分环状或线状（通常沿Z轴），等等。 设想这些的组合。 相应的检测器还可以是与源相关联的全环检测器或部分环检测器，以提供成像体积的足够覆盖并提供收集的数据的期望的数学完整性。