公开(公告)号：US20110051886A1

公开(公告)日：2011-03-03

申请号：US12550597

申请日：2009-08-31

Applicant: Samit Kumar Basu ,  Eugene Alex Ingerman

Inventor： Samit Kumar Basu ,  Eugene Alex Ingerman

IPC: H05G1/60 ,  H05G1/10 ,  G01N23/04

CPC classification number: G01N23/046 ,  G01N2223/419 ,  G01N2223/643

Abstract: A method for scanning a stream of objects includes continuously acquiring raw data of the stream of objects using an X-ray system, that includes a detector. The raw data of the stream of objects is rebinned into at least one two-dimensional sinogram. A leading edge and a trailing edge of a first object of the stream of objects is determined from the at least one two-dimensional sinogram and a three-dimensional image of the first object is reconstructed using the at least one two-dimensional sinogram.

Abstract translation: 用于扫描对象流的方法包括使用包括检测器的X射线系统连续获取物体流的原始数据。 对象流的原始数据被重新组合成至少一个二维正弦图。 从所述至少一个二维正弦图确定所述物体流的第一物体的前缘和后缘，并且使用所述至少一个二维正弦图重建所述第一物体的三维图像。

公开(公告)号：US20090039273A1

公开(公告)日：2009-02-12

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 constructed to directly convert an energy of at least one incident photon to an electrical signal indicative of the energy level of the at least one individual photon and a data acquisition system (DAS). The DAS includes a first comparator having a first signal level threshold that is less than an electrical signal level that is indicative of a maximum energy 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 that is greater than or equal to the electrical signal level 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. The DAS further includes a device configured to determine a photon count based on the counts from the first and second comparators and to output the photon count for image reconstruction.

Abstract translation: 光子计数检测器包括被直接转换至少一个入射光子的能量到指示至少一个单独光子和数据采集系统（DAS）的能级的电信号的直接转换材料。 DAS包括第一比较器，其具有小于指示光子谱的最大能量的电信号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第一信号时输出计数 以及具有大于或等于指示光子谱的最大能量的电信号电平的第二信号电平阈值的第二比较器，所述第二比较器被配置为当电信号超过第二电平时输出计数 信号电平门限。 DAS还包括被配置为基于来自第一和第二比较器的计数确定光子计数并输出用于图像重建的光子计数的装置。

公开(公告)号：US07433443B1

公开(公告)日：2008-10-07

申请号：US11846664

申请日：2007-08-29

Applicant: John Eric Tkaczyk ,  Samit Kumar Basu ,  Xiaoye Wu ,  Yanfeng Du

Inventor： John Eric Tkaczyk ,  Samit Kumar Basu ,  Xiaoye Wu ,  Yanfeng Du

IPC: H05G1/26

CPC classification number: A61B6/4014 ,  A61B6/032 ,  A61B6/4241 ,  G01T1/2985

Abstract: A CT imaging system includes a rotatable gantry having an opening to receive an object to be scanned, a first x-ray emission source attached to the rotatable gantry and configured to emit x-rays toward the object, and a second x-ray emission source attached to the rotatable gantry and configured to emit x-rays toward the object. A first detector is configured to receive x-rays that emit from the first x-ray emission source, and a second detector configured to receive x-rays that emit from the second x-ray emission source. A first portion of the first detector is configured to operate in an integration mode and a first portion of the second detector is configured to operate in at least a photon-counting mode.

Abstract translation: CT成像系统包括可旋转机架，其具有用于接收待扫描物体的开口，附接到可旋转机架并被配置为朝向物体发射x射线的第一x射线发射源，以及第二x射线发射源 附接到可旋转机架并且被配置为朝向物体发射X射线。 第一检测器被配置为接收从第一x射线发射源发射的X射线，以及第二检测器，被配置为接收从第二x射线发射源发射的X射线。 第一检测器的第一部分被配置为以积分模式操作，并且第二检测器的第一部分被配置为以至少光子计数模式操作。

公开(公告)号：US20080118020A1

公开(公告)日：2008-05-22

申请号：US11561114

申请日：2006-11-17

Applicant: Jean-Baptiste Daniel Marie Thibault ,  Jiang Hsieh ,  Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu ,  Zhou Yu ,  Charles Addison Bouman ,  Ken David Sauer

Inventor： Jean-Baptiste Daniel Marie Thibault ,  Jiang Hsieh ,  Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu ,  Zhou Yu ,  Charles Addison Bouman ,  Ken David Sauer

IPC: A61B6/03 ,  G06K9/00

CPC classification number: G06T11/006 ,  G06T2211/424

Abstract: A method for reconstructing an image of an object, the image comprising a plurality of image elements, is disclosed. The method includes accessing image data associated with the plurality of image elements, applying a first algorithm to the plurality of image elements, selecting a spatially non-homogenous set of the plurality of image elements, and applying an iterative algorithm to the set of image elements to reduce an amount of time necessary for reconstructing the image, or to improve an image quality at a fixed computation time, or both.

Abstract translation: 公开了一种用于重构对象的图像的方法，该图像包括多个图像元素。 该方法包括访问与多个图像元素相关联的图像数据，向多个图像元素应用第一算法，选择多个图像元素的空间非均匀集合，以及将迭代算法应用于图像元素集合 以减少重建图像所需的时间量，或者以固定的计算时间或两者来提高图像质量。

公开(公告)号：US07372934B2

公开(公告)日：2008-05-13

申请号：US11317841

申请日：2005-12-22

Applicant: Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu

Inventor： Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu

IPC: H05G1/60

CPC classification number: G01N23/046 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  G01N2223/419 ,  Y10S378/901

Abstract: A method for acquiring an image data set comprising energy integrating (EI) and energy discriminating (ED) data measurements is provided. The method comprises obtaining EI measurement data and ED measurement data during an acquisition cycle. The method then comprises combining the EI measurement data and the ED measurement data before, during or after reconstruction. Finally the method comprises performing reconstruction on the original or combined datasets to obtain one or more of an EI image and one or more ED component images.

Abstract translation: 提供了一种用于获取包括能量积分（EI）和能量鉴别（ED）数据测量的图像数据集的方法。 该方法包括在采集周期中获得EI测量数据和ED测量数据。 该方法然后包括在重建之前，期间或之后组合EI测量数据和ED测量数据。 最后，该方法包括对原始或组合数据集执行重建以获得EI图像和一个或多个ED分量图像中的一个或多个。

公开(公告)号：US20080101535A1

公开(公告)日：2008-05-01

申请号：US11553411

申请日：2006-10-26

Applicant: Xiaoye Wu ,  James W. LeBlanc ,  Samit Kumar Basu

Inventor： Xiaoye Wu ,  James W. LeBlanc ,  Samit Kumar Basu

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

CPC classification number: A61B6/405 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/5235 ,  G01T1/2985

Abstract: A CT system in an example comprises one or more high frequency electromagnetic energy sources, a detection assembly, a data acquisition system (DAS), and a computer. The one or more high frequency electromagnetic energy sources emit one or more beams of high frequency electromagnetic energy toward an object to be imaged. The detection assembly is capable of measuring a plurality of projection data at a same projection path that corresponds to a plurality of distinct incident energy spectra. The detection assembly comprises one or more energy discriminating (ED) detectors and/or one or more energy integration (EI) detectors that receive high frequency electromagnetic energy emitted by the one or more high frequency electromagnetic energy sources. The data acquisition system (DAS) is operably connected to the one or more ED detectors and/or the one or more EI detectors. The computer is operably connected to the DAS.

Abstract translation: 示例中的CT系统包括一个或多个高频电磁能源，检测组件，数据采集系统（DAS）和计算机。 一个或多个高频电磁能源朝向要成像的物体发射一个或多个高频电磁能量束。 检测组件能够在对应于多个不同入射能谱的相同投影路径上测量多个投影数据。 检测组件包括一个或多个能量识别（ED）检测器和/或接收由一个或多个高频电磁能源发射的高频电磁能的一个或多个能量积分（EI）检测器。 数据采集​​系统（DAS）可操作地连接到一个或多个ED检测器和/或一个或多个EI检测器。 计算机可操作地连接到DAS。

公开(公告)号：US06724856B2

公开(公告)日：2004-04-20

申请号：US10121867

申请日：2002-04-15

Applicant: Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu

Inventor： Bruno Kristiaan Bernard De Man ,  Samit Kumar Basu

IPC: G01N23083

CPC classification number: G06T11/006 ,  G06T2211/424

Abstract: Methods for projecting and backprojecting rays with respect to pixels/detector bins to attenuate/eliminate high-frequency artifacts, are disclosed. The first two methods are adaptations of pixel-driven and ray-driven linear interpolation techniques respectively. In these techniques, the window or shadow of each pixel/bin is dynamically adjusted and projected onto the detector bin/pixel to eliminate gaps between the shadows. This allows the effect of each pixel on a given detector bin (or vice versa) to be appropriately weighted. A third is a distance-driven technique wherein the transitions of the pixels and the detector bins are respectively projected onto a common axis. This allows a determination of the contribution of each of the pixels/bins for each of the bins/pixels with lower computation time and improved artifact free images.

Abstract translation: 公开了相对于像素/检测器箱投射和反投影光线以衰减/消除高频伪影的方法。 前两种方法分别是像素驱动和射线驱动线性插值技术的适应。 在这些技术中，每个像素/仓的窗口或阴影被动态地调整并投影到检测器箱/像素上，以消除阴影之间的间隙。 这允许适当地加权给定检测器箱（或反之亦然）上的每个像素的效果。 第三种是距离驱动技术，其中像素和检测器箱的转变分别投影到公共轴上。 这允许确定具有较低计算时间和改进的无伪像图像的每个像素/像素的每个像素/块的贡献。

公开(公告)号：US20140010473A1

公开(公告)日：2014-01-09

申请号：US13542697

申请日：2012-07-06

Applicant: Samit Kumar Basu ,  Todd Jason Gable

Inventor： Samit Kumar Basu ,  Todd Jason Gable

IPC: G06K9/40

CPC classification number: G06T11/008

Abstract: A method for imaging an object is provided. The method includes acquiring image data of the object, wherein the image data includes a plurality of original voxels each having an original CT number, identifying, using a processing device, a subset of the original voxels based on at least one of an original CT number and a location of each original voxel, applying, using the processing device, an anisotropic smoothing filter to the identified original voxels in the subset to generate a set of smoothed voxels each having a smoothed CT number, generating, using the processing device, smoothed image data by combining the original voxels and the smoothed voxels, and analyzing the smoothed image data to determine whether the object contains contraband.

Abstract translation: 提供了一种用于成像对象的方法。 所述方法包括获取所述对象的图像数据，其中所述图像数据包括每个具有原始CT号码的多个原始体素，基于原始CT数字中的至少一个，使用处理设备识别所述原始体素的子集 以及每个原始体元的位置，使用处理设备向所述子集中的所识别的原始体素应用各向异性平滑滤波器，以生成每个具有平滑CT数的平滑体素集合，使用所述处理设备生成平滑图像 通过组合原始体素和平滑体素的数据，并分析平滑的图像数据以确定对象是否包含违禁品。

公开(公告)号：US08571287B2

公开(公告)日：2013-10-29

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

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：US08416415B2

公开(公告)日：2013-04-09

申请号：US12430337

申请日：2009-04-27

Applicant: Mark Allen Woodmansee ,  Samit Kumar Basu ,  Vijay Kumar Yaram ,  Weiguo Chen ,  Yikang Gu ,  Kevin Michael Hinckley

Inventor： Mark Allen Woodmansee ,  Samit Kumar Basu ,  Vijay Kumar Yaram ,  Weiguo Chen ,  Yikang Gu ,  Kevin Michael Hinckley

IPC: G01N21/00

CPC classification number: F23N5/082 ,  F01D17/085 ,  F01D21/003 ,  F23N5/003 ,  F23N2041/20 ,  G01J5/0088 ,  G01J5/58 ,  G01J2005/0081 ,  Y02T50/677

Abstract: A method and system for recreating a two-dimensional distribution of temperatures in an exhaust plane of a gas turbine engine. Light transmission and detection pairs may be arranged in the annulus of the exhaust of the turbine engine in such a way that the individual rays form a two-dimensional mesh of beams across a sector of the exhaust. Based on the absorption of the rays, the temperature of the sector of the exhaust thru which the ray passes may be determined. Based on these determinations, an image that corresponds to the operation of the turbine engine may be generated.

Abstract translation: 一种用于重建燃气涡轮发动机的排气平面中的二维温度分布的方法和系统。 光透射和检测对可以以这样的方式布置在涡轮发动机的排气的环形空间中，使得各个射线在排气的扇区上形成横梁的二维网格。 基于光线的吸收，可以确定射线通过的排气扇区的温度。 基于这些确定，可以产生对应于涡轮发动机的操作的图像。