公开(公告)号：US07813474B2

公开(公告)日：2010-10-12

申请号：US11869097

申请日：2007-10-09

申请人： Xiaoye Wu ,  James W. LeBlanc ,  Paavana Sainath ,  Thomas John Myers ,  Charles Hugh Shaughnessy ,  Uwe Wiedmann

发明人： Xiaoye Wu ,  James W. LeBlanc ,  Paavana Sainath ,  Thomas John Myers ,  Charles Hugh Shaughnessy ,  Uwe Wiedmann

IPC分类号： H05G1/60 ,  H05G1/32 ,  A61B6/03

CPC分类号： A61B6/405 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482

摘要： A CT system includes a rotatable gantry having an opening for receiving a subject to be scanned, a rotatable gantry having an opening for receiving a subject to be scanned, an x-ray source configured to project x-rays having multiple energies toward the subject, and a generator configured to energize the x-ray source to a first voltage and configured to energize the x-ray source to a second voltage, the first voltage distinct from the second voltage. The system further includes a controller configured to cause the generator to energize the x-ray source to the first voltage for a first duration, acquire imaging data for at least one view during at least the first duration, after the first duration, cause the generator to energize the x-ray source to the second voltage for a second duration, and acquire imaging data for two or more views during at least the second duration.

摘要翻译： CT系统包括具有用于接收待扫描的被摄体的开口的可旋转台架，具有用于接收待扫描的被摄体的开口的可旋转机架;被配置为将具有多个能量的x射线投射到被摄体的X射线源， 以及发生器，其被配置为将所述x射线源激励到第一电压并且被配置为将所述x射线源激励到第二电压，所述第一电压不同于所述第二电压。 该系统还包括控制器，该控制器被配置为使得发生器在第一持续时间内，在至少第一持续时间内，在第一持续时间之后，将x射线源激励到第一电压，从而在第一持续时间之后，获得用于至少一个视图的成像数据， 以将X射线源激励到第二电压持续第二持续时间，并且在至少第二持续时间内获取用于两个或更多个视图的成像数据。

公开(公告)号：US20100128948A1

公开(公告)日：2010-05-27

申请号：US12324008

申请日：2008-11-26

申请人： Brian Thomsen ,  Xiaoye Wu

发明人： Brian Thomsen ,  Xiaoye Wu

IPC分类号： G06K9/00 ,  A61B6/00

CPC分类号： A61B6/482 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/505

摘要： The present technology relates to the generation of a CT image under an arbitrary energy spectrum based on the results of a dual energy scan. In certain embodiments, a dual energy scan is conducted of an object and material basis decomposition is used to decompose the scanned object into two basis materials with known attenuation properties resulting in material density images. Along with knowledge of other imaging system information, forward projection is done under an arbitrary kV spectrum to generate an image as if the scanned object was scanned under this different kV spectrum. This prevents users from conducting unnecessary additional scans.

摘要翻译： 本技术涉及基于双能量扫描的结果在任意能谱下产生CT图像。 在某些实施例中，对物体进行双能量扫描，并且材料基础使用分解来将被扫描的物体分解成具有已知衰减特性的两种基础材料，从而产生材料密度图像。 随着对其他​​成像系统信息的了解，在任意的kV光谱下进行前向投影以产生像在该不同的kV光谱下扫描的物体一样的图像。 这样可以防止用户进行不必要的附加扫描。

公开(公告)号：US20100020921A1

公开(公告)日：2010-01-28

申请号：US12179298

申请日：2008-07-24

申请人： Fang Frank Dong ,  Xiaoye Wu ,  James Walter Leblanc

发明人： Fang Frank Dong ,  Xiaoye Wu ,  James Walter Leblanc

IPC分类号： A61B6/00

CPC分类号： A61B6/032 ,  A61B6/4028 ,  A61B6/583 ,  Y10S378/901

摘要： A computed tomographic imaging system is provided for generating computed tomography images. The computed tomographic system includes a processor configured to access image data encoding X-ray projections at a detector position and a plurality of X-ray source beam focal spot positions and to align pixel values for the projections in a direction of deviation of the positions. The processor is also configured to determine a correction factor for at least one of the projections based upon the aligned pixel values and upon a sum of the projections and to correct the pixel values for the at least one of the projections based upon the correction factor.

摘要翻译： 提供计算机断层摄影系统用于生成计算机断层摄影图像。 计算机断层摄影系统包括处理器，其被配置为访问在检测器位置处编码X射线投影的图像数据和多个X射线源束焦点位置，并且在位置的偏离方向上对准投影的像素值。 处理器还被配置为基于对准的像素值和投影的总和来确定至少一个投影的校正因子，并且基于校正因子来校正至少一个投影的像素值。

公开(公告)号：US20090161939A1

公开(公告)日：2009-06-25

申请号：US11962507

申请日：2007-12-21

申请人： Xiaoye Wu ,  David Allen Langan ,  James Vradenburg Miller ,  Yogisha Mallya ,  Srikanth Suryanarayanan

发明人： Xiaoye Wu ,  David Allen Langan ,  James Vradenburg Miller ,  Yogisha Mallya ,  Srikanth Suryanarayanan

IPC分类号： G06K9/00 ,  H05G1/08

CPC分类号： G06T7/0012 ,  A61B6/482 ,  G06F19/00 ,  G06T7/11 ,  G06T2207/10116 ,  G06T2207/10152 ,  G06T2207/30016 ,  G06T2207/30101

摘要： A technique is provided for extracting one or more features of interest from one or more projection images. The technique includes accessing projection images comprising at least one feature of interest enhanced by a contrast agent, generating a contrast agent null image based on the projection images, generating a bone mask based on the contrast agent null image, and generating a bone extracted image based on the bone mask.

摘要翻译： 提供了一种用于从一个或多个投影图像提取感兴趣的一个或多个特征的技术。 该技术包括访问包括至少一个由造影剂增强的感兴趣特征的投影图像，基于投影图像生成造影剂空图像，基于造影剂空图像生成骨掩模，以及生成基于骨提取图像的图像 在骨头上。

公开(公告)号：US20090129538A1

公开(公告)日：2009-05-21

申请号：US11941175

申请日：2007-11-16

申请人： John Eric Tkaczyk ,  Jonathan D. Short ,  Yanfeng Du ,  Wen Li ,  Xiaoye Wu

发明人： John Eric Tkaczyk ,  Jonathan D. Short ,  Yanfeng Du ,  Wen Li ,  Xiaoye Wu

IPC分类号： A61B6/00 ,  G01T1/20

CPC分类号： G01T1/20 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  G01T1/242 ,  G01T1/249

摘要： A diagnostic imaging system includes an x-ray source that emits a beam of x-ray energy toward an object to be imaged and an energy discriminating (ED) detector that receives the x-ray energy emitted by the x-ray energy source. The ED detector includes a first layer having a first thickness, wherein the first layer comprises a semiconductor configurable to operate in at least an integrating mode and a second layer having a second thickness greater than the first thickness, and configured to receive x-rays that pass through the first layer. The system further includes a data acquisition system (DAS) operably connected to the ED detector and a computer that is operably connected to the DAS. The computer is programmed to identify saturated data in the second layer and substitute the saturated data with non-saturated data from a corresponding pixel in the first layer.

摘要翻译： 诊断成像系统包括向待成像对象发射X射线能量束的x射线源和接收由x射线能量源发射的x射线能量的能量鉴别（ED）检测器。 ED检测器包括具有第一厚度的第一层，其中第一层包括可配置成至少以积分模式操作的半导体和具有大于第一厚度的第二厚度的第二层，并且被配置为接收x射线， 通过第一层。 该系统还包括可操作地连接到ED检测器的数据采集系统（DAS）和可操作地连接到DAS的计算机。 计算机被编程为识别第二层中的饱和数据，并用来自第一层中的对应像素的非饱和数据替换饱和数据。

公开(公告)号：US07379527B2

公开(公告)日：2008-05-27

申请号：US11315938

申请日：2005-12-22

申请人： Xiaoye Wu ,  Paavana Sainath ,  Ferry Tamtoro ,  Jean-Baptiste Thibault ,  Roy-Arnulf Helge Nilsen

发明人： Xiaoye Wu ,  Paavana Sainath ,  Ferry Tamtoro ,  Jean-Baptiste Thibault ,  Roy-Arnulf Helge Nilsen

IPC分类号： G01N23/00

CPC分类号： A61B6/583 ,  A61B6/027 ,  A61B6/032 ,  G01N2223/3035 ,  Y10S378/901

摘要： A method for normalizing a calibration of a computed tomographic (CT) imaging apparatus having a plurality of detector rows includes utilizing a prestored, predetermined inversion matrix and CT numbers obtained from images of a phantom to determine normalized calibration vectors for each row of a plurality of detector rows, and storing the determined normalized calibration vectors for each row of the plurality of detector rows in a memory for use in subsequent image reconstructions.

摘要翻译： 用于对具有多个检测器行的计算机断层摄影（CT）成像设备进行校准的归一化方法包括利用预先存储的预定反演矩阵和从体模图像获得的CT数来确定多个 检测器行，并且将所确定的多个检测器行中的每行的归一化校准向量存储在存储器中，以用于随后的图像重建。

公开(公告)号：US07346203B2

公开(公告)日：2008-03-18

申请号：US10717861

申请日：2003-11-19

申请人： Matthew William Turek ,  Joseph Leagrand Mundy ,  Tony Chi-shao Pan ,  Peter Henry Tu ,  James Vradenburg Miller ,  Robert August Kaucic, Jr. ,  Xiaoye Wu ,  Paulo Ricardo dos Santos Mendonca

发明人： Matthew William Turek ,  Joseph Leagrand Mundy ,  Tony Chi-shao Pan ,  Peter Henry Tu ,  James Vradenburg Miller ,  Robert August Kaucic, Jr. ,  Xiaoye Wu ,  Paulo Ricardo dos Santos Mendonca

IPC分类号： G06K9/00 ,  G06K9/34 ,  A61B5/00 ,  A61B5/05

CPC分类号： G06T7/0012 ,  G06F19/00 ,  G06F19/321 ,  G06T2207/30061 ,  G16H50/20

摘要： A method for detecting, quantifying, staging, reporting, and/or tracking of a disease includes providing analysis software configured to detect, quantify, stage, report, and/or track a disease utilizing images of a patient. The analysis software is executable on a personal computer of a patient. Patients are then imaged utilizing a medical imaging apparatus and medical images of the patient produced by the imaging apparatus are downloaded to the personal computer of the patient. The imaging and downloading are repeated a plurality of times at intervals selected to provide the analysis software with sufficient images to detect, quantify, stage, report, and/or track the disease in the patient.

摘要翻译： 用于检测，量化，分期，报告和/或跟踪疾病的方法包括提供被配置为利用患者的图像来检测，量化，分段，报告和/或跟踪疾病的分析软件。 分析软件可在患者的个人计算机上执行。 然后使用医学成像装置对患者进行成像，并且将由成像装置产生的患者的医学图像下载到患者的个人计算机。 以选择的间隔重复成像和下载多次，以使分析软件具有足够的图像以检测，量化，分级，报告和/或跟踪患者的疾病。

公开(公告)号：US20080056435A1

公开(公告)日：2008-03-06

申请号：US11726023

申请日：2007-03-20

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

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

IPC分类号： G01N23/00

CPC分类号： G01T1/2985 ,  A61B6/027

摘要： 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.

摘要翻译： 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：US07283605B2

公开(公告)日：2007-10-16

申请号：US11331727

申请日：2006-01-14

申请人： Paavana Sainath ,  Xiaoye Wu ,  Masatake Nukui ,  Ronald Joseph Lundgren ,  Thomas John Myers

发明人： Paavana Sainath ,  Xiaoye Wu ,  Masatake Nukui ,  Ronald Joseph Lundgren ,  Thomas John Myers

IPC分类号： H05G1/60

CPC分类号： G06T11/005 ,  A61B6/027 ,  Y10S378/901

摘要： A method for reconstructing an image of an object includes scanning the object with a computed tomography (CT) system to obtain data, estimating a size of the object using the obtained data, using the estimated size of the object to perform scatter correction on the obtained data, and reconstructing an image using the scatter corrected data.

摘要翻译： 一种用于重建对象的图像的方法包括用计算机断层摄影（CT）系统扫描对象以获得数据，使用所获取的数据估计对象的大小，使用对象的估计大小对获得的对象进行散射校正 数据，并使用分散校正数据重建图像。

公开(公告)号：US06904120B2

公开(公告)日：2005-06-07

申请号：US10611477

申请日：2003-07-01

申请人： Xiaoye Wu ,  James LeBlanc

发明人： Xiaoye Wu ,  James LeBlanc

IPC分类号： A61B6/00 ,  A61B6/03

CPC分类号： A61B6/583 ,  A61B6/032 ,  A61B6/501 ,  A61B6/585

摘要： The present technique provides for the estimation and correction of bone induced spectral (BIS) artifacts. Spectral matching is employed to approximate the incident X-ray spectrum attenuated by bone and water with an X-ray spectrum attenuated by water alone. A table can be built to express the amount in apparent projection value shift for objects containing bone and water compared with water-like object when their corresponding normalized spectra match. The BIS error may thereby be determined from existing spectral error data obtained from spectral calibration. A corresponding correction factor may be determined from the shift value.