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：US07260170B2

公开(公告)日：2007-08-21

申请号：US11627144

申请日：2007-01-25

Applicant: Jerome Stephen Arenson ,  David Ruimi ,  Evgeny Drapkin ,  Dmitry Samsonov ,  Bruno K. B. De Man ,  Samit Kumar Basu

Inventor： Jerome Stephen Arenson ,  David Ruimi ,  Evgeny Drapkin ,  Dmitry Samsonov ,  Bruno K. B. De Man ,  Samit Kumar Basu

IPC: G01N23/00

CPC classification number: G01T1/1644 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/583 ,  G01T1/1647 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10081 ,  G06T2207/30004 ,  G06T2207/30112 ,  Y10S378/901

Abstract: An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

公开(公告)号：US07242749B2

公开(公告)日：2007-07-10

申请号：US11273851

申请日：2005-11-15

Applicant: Jiang Hsieh ,  Alexander Katsevich ,  Samit Kumar Basu

Inventor： Jiang Hsieh ,  Alexander Katsevich ,  Samit Kumar Basu

IPC: G21K1/04

CPC classification number: A61B6/032 ,  A61B6/027 ,  A61B6/06 ,  G21K1/04

Abstract: Methods and systems for controlling x-ray exposure during a dynamic pitch helical scan using a translatable table are provided. The system includes a collimator positioned between an x-ray source and an object to be scanned configured to shutter an x-ray fan beam generated by the x-ray source to at least one of translate the x-ray fan beam along a z-axis of the scan and vary the width of the x-ray beam along the z-axis, and a collimator controller configured to dynamically position the collimator using at least one of predetermined trajectory of the translatable table and a current position of the translatable table.

公开(公告)号：US08768032B2

公开(公告)日：2014-07-01

申请号：US13542800

申请日：2012-07-06

Applicant: Samit Kumar Basu

Inventor： Samit Kumar Basu

IPC: G06K9/00

CPC classification number: G06T11/005

Abstract: A computer-implemented method for correcting artifacts in measured image data due to differential scatter rejection in a computed tomography system is provided. A system for correcting artifacts in measured image data due to differential scatter rejection in a computed tomography system is also provided. Additionally, a non-transitory computer readable storage medium storing computer-executable instructions thereon for correcting artifacts in measured image data due to differential scatter rejection in a computed tomography system is provided.

Abstract translation: 提供了一种用于在计算机断层摄影系统中校正由于差分散射抑制引起的测量图像数据中的伪像的计算机实现的方法。 还提供了一种用于在计算机断层摄影系统中校正由于差分散射抑制引起的测量图像数据中的伪影的系统。 另外，提供了一种非暂时性计算机可读存储介质，其存储用于在计算机断层摄影系统中由于差分散射抑制而在测量的图像数据中校正伪像的计算机可执行指令。

公开(公告)号：US08233682B2

公开(公告)日：2012-07-31

申请号：US11758166

申请日：2007-06-05

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

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

IPC: G06K9/00

CPC classification number: A61B6/032 ,  A61B6/037 ,  G06T11/006 ,  G06T2211/412 ,  G06T2211/424

Abstract: A method of improving a resolution of an image using image reconstruction is provided. The method includes acquiring scan data of an object and forward projecting a current image estimate of the scan data to generate calculated projection data. The method also includes applying a data-fit term and a regularization term to the scan data and the calculated projection data and modifying at least one of the data fit term and the regularization term to accommodate spatio-temporal information to form a reconstructed image from the scan data and the calculated projection data.

Abstract translation: 提供了一种使用图像重建来提高图像分辨率的方法。 该方法包括获取对象的扫描数据并向前投影扫描数据的当前图像估计以产生计算出的投影数据。 该方法还包括将数据拟合项和正则化项应用于扫描数据和计算出的投影数据，并修改数据拟合项和正则化项中的至少一个，以适应时空信息，以形成来自 扫描数据和计算出的投影数据。

公开(公告)号：US08081733B2

公开(公告)日：2011-12-20

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: G01N23/00

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：US08027427B2

公开(公告)日：2011-09-27

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

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：US20100272557A1

公开(公告)日：2010-10-28

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: F02C7/00 ,  G01M15/00

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。

公开(公告)号：US20090080597A1

公开(公告)日：2009-03-26

申请号：US11861639

申请日：2007-09-26

Applicant: Samit Kumar Basu

Inventor： Samit Kumar Basu

IPC: A61B6/03 ,  G06K9/00

CPC classification number: A61B6/4241 ,  A61B5/4869 ,  A61B6/032 ,  A61B6/482 ,  G06T11/005 ,  G06T2211/408

Abstract: A system and method of a diagnostic imaging system includes an x-ray source that emits a beam of x-rays toward an object to be imaged, a detector that receives x-rays emitted by the x-ray source and attenuated by the object, and a data acquisition system (DAS) operably connected to the detector. A computer is operably connected to the DAS and programmed to obtain a number of measurements of energy-sensitive CT measurements in excess of a number of materials to be resolved, decompose the number of measurements into individual materials as an overdetermined system of equations, and generate an image of the individual materials based on the decomposition.

Abstract translation: 诊断成像系统的系统和方法包括向待成像对象发射X射线束的X射线源，接收由X射线源发射并被物体衰减的x射线的检测器， 以及可操作地连接到检测器的数据采集系统（DAS）。 计算机可操作地连接到DAS并被编程以获得超过待分解的材料数量的能量敏感CT测量的多个测量值，将测量数量分解为单个材料作为过度确定的方程组，并产生 基于分解的单个材料的图像。

公开(公告)号：US07466793B2

公开(公告)日：2008-12-16

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: G01N23/00

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。