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1. 发明授权

US06408043B1 Volumetric computed tomography system for cardiac imaging including a system for communicating data over a network 失效
标题翻译：用于心脏成像的体积计算机断层摄影系统，包括用于通过网络传送数据的系统
公开(公告)号：US06408043B1
公开(公告)日：2002-06-18
申请号：US09473247
申请日：1999-12-27
申请人： Hui Hu , Jiang Hsieh , Stanley H. Fox , Kishore C. Acharya , Hui David He , Yi Sun
发明人： Hui Hu , Jiang Hsieh , Stanley H. Fox , Kishore C. Acharya , Hui David He , Yi Sun
IPC分类号： A61B600
CPC分类号： A61B6/541 , A61B6/027 , G01N23/046 , G01N2223/419 , G01N2223/612
摘要： A method for generating an image of an object using a computed tomography (CT) imaging system, which includes at least one x-ray detector array and at least one rotating x-ray source projecting an x-ray beam, includes the steps of identifying a physiological cycle of the object (the cycle comprising a plurality of phases); selecting at least one phase of the object; collecting at least one segment of projection data for each selected phase of the object during each rotation of each x-ray source; generating a projection data set by combining the projection data segments; generating a cross-sectional image of the entire object from the projection data set; and communicating the image or data associated with the image to a remote facility. The remote facility provides remote services over a network.
摘要翻译：一种使用计算机断层摄影（CT）成像系统产生物体的图像的方法，该系统包括至少一个X射线检测器阵列和投射X射线束的至少一个旋转x射线源，包括识别物体的生理周期（包括多个相的周期）; 选择对象的至少一个阶段; 在每个x射线源的每次旋转期间收集对象的每个所选相位的至少一个投影数据段; 通过组合所述投影数据段来生成投影数据集; 从所述投影数据集生成整个对象的横截面图像; 并将与图像相关联的图像或数据传送到远程设施。远程设备通过网络提供远程服务。

2. 发明授权

US06370217B1 Volumetric computed tomography system for cardiac imaging 有权
标题翻译：用于心脏成像的体积计算机断层摄影系统
公开(公告)号：US06370217B1
公开(公告)日：2002-04-09
申请号：US09307400
申请日：1999-05-07
申请人： Hui Hu , Jiang Hsieh , Stanley H. Fox , Kishore C. Acharya , Hui David He , Yi Sun
发明人： Hui Hu , Jiang Hsieh , Stanley H. Fox , Kishore C. Acharya , Hui David He , Yi Sun
IPC分类号： A61B600
CPC分类号： A61B6/541 , A61B6/027 , G01N23/046 , G01N2223/419 , G01N2223/612
摘要： The present invention, in one form is an imaging system for generating images of an entire object. In one embodiment, a physiological cycle unit is used to determine the cycle of the moving object. By altering the rotational speed of an x-ray source as a function of the object cycle, segments of projection data are collected for each selected phase of the object during each rotation. After completing a plurality of rotations, the segments of projection data are combined and a cross-sectional image of the selected phase of the object is generated. As a result, minimizing motion artifacts.
摘要翻译：本发明的一种形式是用于产生整个对象的图像的成像系统。在一个实施例中，使用生理循环单元来确定移动物体的周期。通过改变作为对象周期的函数的x射线源的旋转速度，在每个旋转期间针对对象的每个选定阶段收集投影数据的段。在完成多个旋转之后，组合投影数据的段，并且生成对象的选定阶段的横截面图像。结果，最小化运动伪像。

3. 发明授权

US06639965B1 Methods and apparatus for cardiac imaging with conventional computed tomography 有权
标题翻译：用常规计算机断层扫描进行心脏成像的方法和装置
公开(公告)号：US06639965B1
公开(公告)日：2003-10-28
申请号：US09410157
申请日：1999-09-30
申请人： Jiang Hsieh , Tin-Su Pan , Yun Shen , Steve John Woloschek , Mark E. Woodford , Kishore C. Acharya
发明人： Jiang Hsieh , Tin-Su Pan , Yun Shen , Steve John Woloschek , Mark E. Woodford , Kishore C. Acharya
IPC分类号： A61B600
CPC分类号： A61B6/541 , A61B6/027 , A61B6/032 , A61B6/503
摘要： A method and apparatus for imaging a heart with a scanning computed tomography (CT) imaging system. A cardiac cycle of a patient is measured. The patient's heart is then scanned with the scanning CT imaging system at an angular rate asynchronous to the measured cardiac cycle to obtain image data. An image of the patient's heart is then assembled from chronologically discontinuous segments of the image data. The image is representative of a selected portion of the cardiac cycle.
摘要翻译：一种用扫描计算机断层摄影（CT）成像系统对心脏进行成像的方法和装置。测量患者的心脏周期。然后用扫描CT成像系统以与测量的心动周期异步的角速率扫描患者的心脏，以获得图像数据。然后从图像数据的时间上不连续的部分组装患者心脏的图像。图像代表心脏周期的选定部分。

4. 发明授权

US06307910B1 Methods and apparatus for reduced radiation coronary computed tomography imaging 有权
标题翻译：减少辐射冠状动脉计算机断层扫描成像的方法和装置
公开(公告)号：US06307910B1
公开(公告)日：2001-10-23
申请号：US09479015
申请日：2000-01-07
申请人： Kishore C. Acharya , Jiang Hsieh , Kenneth G. Dunahee , Steven J. Woloschek
发明人： Kishore C. Acharya , Jiang Hsieh , Kenneth G. Dunahee , Steven J. Woloschek
IPC分类号： H61B603
CPC分类号： A61B6/541 , A61B6/032 , G01N23/046 , G01N2223/419 , G01N2223/612 , G06T11/005 , G06T2211/412 , G06T2211/436
摘要： Methods and corresponding apparatus for imaging a portion of a patient's body with a computed tomographic imaging system configured to scan the patient's body at a cyclically varying view angle, in which the imaging system includes a radiation source and detector array providing a fan angle width of image data. In one embodiment, the method includes axially scanning the portion of the patient's body, gating the radiation source on over less than a 360 °view angle cycle of the axial scan, acquiring image data of the portion of the patient's body during at least a portion of the time the radiation source is gated on, and assembling the acquired image data into an image of the portion of the patient's body.
摘要翻译：用于利用计算机断层成像系统对患者身体的一部分进行成像的方法和相应装置，所述计算机断层摄影系统被配置为以循环变化的视角扫描患者身体，其中所述成像系统包括辐射源和提供图像的扇角宽度的检测器阵列数据。在一个实施例中，该方法包括轴向扫描患者身体的部分，在轴向扫描的小于360°的视角周期上选通辐射源，在至少一部分内获取患者身体部分的图像数据放射源被选通的时间，以及将获取的图像数据组装成患者身体的该部分的图像。

5. 发明授权

US06529576B2 Method and apparatus for pitch-adaptive reconstruction in multislice helical computed tomographic systems 有权
标题翻译：用于多层螺旋计算机断层摄影系统中的俯仰自适应重建的方法和装置
公开(公告)号：US06529576B2
公开(公告)日：2003-03-04
申请号：US09897173
申请日：2001-06-29
申请人： Jiang Hsieh , Kishore C. Acharya
发明人： Jiang Hsieh , Kishore C. Acharya
IPC分类号： A61B603
CPC分类号： G06T11/006 , A61B6/027
摘要： One aspect of the present invention is a method that includes helically scanning an object at a selected helical pitch to acquire projection data of the object. The acquired projection data includes conjugate samples from single rows of the detector array of the CT imaging system and interrow samples. Projections in a plane of reconstruction (POR) are estimated based upon a selection of the projection data from the group consisting of the conjugate samples from at least one of the single rows, the interrow samples, and combinations thereof, the selection dependent upon the selected helical pitch. The estimated projections are filtered and backprojected to reconstruct at least one image of the object.
摘要翻译：本发明的一个方面是一种方法，其包括以选定的螺旋间距螺旋扫描物体以获取物体的投影数据。所获取的投影数据包括来自CT成像系统的检测器阵列的单行和中间样本的共轭样本。基于从由单行，中间样本及其组合中的至少一个组成的组的投影数据的选择来估计重建平面（POR）中的投影，所述选择取决于所选择的螺距。估计的投影被过滤和反向投影以重建对象的至少一个图像。

6. 发明授权

US5761333A Contrast enhancement for CT systems 失效
标题翻译： CT系统的对比度增强
公开(公告)号：US5761333A
公开(公告)日：1998-06-02
申请号：US914697
申请日：1997-08-19
申请人： Jiang Hsieh , Stanley H. Fox
发明人： Jiang Hsieh , Stanley H. Fox
IPC分类号： G06T5/00 , G06K9/00
CPC分类号： G06T7/0081 , G06T5/008 , G06T7/0012 , G06T2207/10081 , G06T2207/30016
摘要： The present invention, in one form, is a method for improving grey-white matter differentiation between regions of an image to be reconstructed from data obtained by a CT scan. More particularly, in accordance with one form of the present invention, a re-mapping function is utilized to generate CT numbers. In accordance with such function, CT numbers that are outside the grey-white matter region are not "stretched". The CT numbers within such region are "stretched" with the larger "stretch" centered on the grey-white matter region and tapering off at the boundary. Using such a function, grey-white matter differentiation is improved without adversely affecting quality and accuracy.
摘要翻译：本发明在一种形式中是一种通过CT扫描得到的数据来改善待重建图像的区域之间的灰白质差异的方法。更具体地，根据本发明的一种形式，利用重映射功能来产生CT数。根据这样的功能，在灰白色区域外的CT数字不会“拉伸”。该区域内的CT数“拉伸”，以灰白色区域为中心的较大的“拉伸”被拉伸，并在边界逐渐变细。使用这样的功能，灰白质分化改善而不会不利地影响质量和精度。

7. 发明授权

US5864598A Methods and apparatus for scanning an object in a computed tomography system 失效
标题翻译：用于在计算机断层摄影系统中扫描物体的方法和装置
公开(公告)号：US5864598A
公开(公告)日：1999-01-26
申请号：US837545
申请日：1997-04-21
申请人： Jiang Hsieh , Stanley H. Fox
发明人： Jiang Hsieh , Stanley H. Fox
IPC分类号： A61B6/03 , H04N5/32
CPC分类号： H04N5/32 , A61B6/027 , Y10S378/901
摘要： The present invention, in one form, is a system for generating a high resolution image of an object from projection data acquired during a computed tomography scan. The system includes a gantry having an x-ray source which rotates around the object. The x-ray source emits an x-ray beam which is collimated with a collimator having a collimator aperture to define an x-ray beam width, or slice thickness. The projection data is reconstructed to generate image data for adjacent image slices. A deconvolution algorithm is applied to the image data to generate a deconvolved image having a finer, i.e., smaller, resolution than the collimator aperture.
摘要翻译：在一种形式中，本发明是一种用于在计算机断层摄影扫描期间从投影数据生成物体的高分辨率图像的系统。该系统包括具有围绕物体旋转的x射线源的台架。 X射线源发射X射线束，该X射线束用具有准直器孔径的准直仪准直，以限定X射线束宽度或切片厚度。重建投影数据以生成相邻图像切片的图像数据。将去卷积算法应用于图像数据以产生具有比准直器孔径更精细，即更小的分辨率的解卷积图像。

8. 发明授权

US06366638B1 Methods and apparatus for CT scout image processing 失效
标题翻译： CT侦察图像处理方法与装置
公开(公告)号：US06366638B1
公开(公告)日：2002-04-02
申请号：US09810922
申请日：2001-03-16
申请人： Jiang Hsieh , Stanley H. Fox
发明人： Jiang Hsieh , Stanley H. Fox
IPC分类号： A61B603
CPC分类号： A61B6/488 , A61B6/032 , G06T11/005 , Y10S378/901
摘要： Methods and Apparatus for reducing image artifacts when reconstructing an image with a multislice computed tomographic (CT) imaging scanner are provided. Scout images are generated by obtaining a plurality of projection views of an object, modifying the projection data utilizing a deconvolution kernel, generating a horizontal gradient and a vertical gradient based on the modified projection data, applying helical weights to the horizontal gradient and vertical gradient, and applying a desired level of enhancement to the weighted horizontal and vertical gradients.
摘要翻译：提供了使用多层计算机断层摄影（CT）成像扫描仪重建图像时减少图像伪影的方法和装置。通过获得对象的多个投影视图，利用去卷积内核修改投影数据，基于经修改的投影数据生成水平梯度和垂直梯度来生成Scout图像，对水平梯度和垂直梯度应用螺旋权重，并且对加权的水平和垂直梯度应用期望的增强水平。

9. 发明授权

US5668846A Methods and apparatus for scanning an object and displaying an image in a computed tomography system 失效
标题翻译：用于扫描对象并在计算机断层摄影系统中显示图像的方法和装置
公开(公告)号：US5668846A
公开(公告)日：1997-09-16
申请号：US733502
申请日：1996-10-18
申请人： Stanley H. Fox , Robert Senzig , Jiang Hsieh
发明人： Stanley H. Fox , Robert Senzig , Jiang Hsieh
IPC分类号： G03B42/02 , A61B6/03 , G01N23/04 , G06T1/00 , H04N5/225 , H04N5/32 , H04N13/04 , A61B6/00
CPC分类号： A61B6/464 , G01N23/046 , A61B6/027 , G01N2223/419 , G01N2223/612 , Y10S378/901
摘要： Methods and apparatus for scanning an object in a computed tomography system during an interventional procedure are described. The computed tomography system includes an x-ray source, a detector, and a display. The detector detects x-rays projected from the x-ray source and attenuated by an object. A processor is coupled to the detector and coupled to the display for generating images of the object on the display. A helical scan is executed to generate an image slice of the object corresponding to each gantry rotation. At least one image slice and one three-dimensional image are simultaneously displayed on the display.
摘要翻译：描述了在介入过程期间在计算机断层摄影系统中扫描物体的方法和装置。计算机断层摄影系统包括x射线源，检测器和显示器。检测器检测从X射线源投射并被物体衰减的X射线。处理器耦合到检测器并耦合到显示器，用于在显示器上产生对象的图像。执行螺旋扫描以生成对应于每个台架旋转的对象的图像切片。在显示器上同时显示至少一个图像切片和一个三维图像。

10. 发明授权

US06418183B1 Methods and apparatus for two-pass CT imaging 有权
标题翻译：二次CT成像的方法和装置
公开(公告)号：US06418183B1
公开(公告)日：2002-07-09
申请号：US09749821
申请日：2000-12-28
申请人： Stanley H. Fox , Jiang Hsieh
发明人： Stanley H. Fox , Jiang Hsieh
IPC分类号： A61B603
CPC分类号： A61B6/5235 , A61B6/032 , A61B6/488 , A61B6/5264 , G06F19/00 , Y10S378/901
摘要： One aspect of the present invention is a method for imaging a volume of a patient with a computed tomographic (CT) imaging system. The method includes steps of: scanning a volume of a patient with a first, full field of view (FOV) scan to acquire first projection data; scanning a smaller volume of the patient with a second, restricted FOV scan to acquire second projection data; estimating an amount of shift between the first projection data and the second projection data resulting from patient movement; and blending first projection data with second projection data in accordance with the estimated amount of shift to estimate projections of the second scan.
摘要翻译：本发明的一个方面是用计算机断层摄影（CT）成像系统对患者体积进行成像的方法。该方法包括以下步骤：用第一全视野（FOV）扫描扫描患者体积以获取第一投影数据; 用第二限制FOV扫描扫描较小体积的患者以获得第二投影数据; 估计由患者移动导致的第一投影数据和第二投影数据之间的偏移量; 以及根据所估计的偏移量将第一投影数据与第二投影数据进行混合以估计第二扫描的投影。

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