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    Apparatus and method for displaying computed tomography fluoroscopy images
    1.
    发明授权
    Apparatus and method for displaying computed tomography fluoroscopy images 失效
    用于显示计算机断层摄影术透视图像的装置和方法

    公开(公告)号：US6101234A

    公开(公告)日：2000-08-08

    申请号：US978803

    申请日：1997-11-26

    申请人： Fazle Ali ,  Jiang Hsieh ,  Girish Saligram ,  Shawn P. Faessler ,  Christopher J. Mussack ,  David M. Deaven ,  Stanley H. Fox ,  Alexsandar Zavaljevski

    发明人： Fazle Ali ,  Jiang Hsieh ,  Girish Saligram ,  Shawn P. Faessler ,  Christopher J. Mussack ,  David M. Deaven ,  Stanley H. Fox ,  Alexsandar Zavaljevski

    IPC分类号： A61B6/03 ,  G01N23/04 ,  G06F19/00 ,  G06T1/00 ,  H04N7/18

    CPC分类号： G01N23/046 ,  A61B6/548 ,  G06F19/321 ,  G06F19/3418 ,  A61B6/027 ,  G01N2223/419 ,  G06F19/3406 ,  Y10S378/901

    摘要： A CT Fluoro System display which includes apparatus and methods for facilitating effective performance of an interventional procedure. The apparatus and methods are generally referred to herein as partial image display, dynamic image reformation, in-room control, flat panel display, in-room display, and magnification. More particularly, an important performance parameter for a CT Fluoro System is the time to first image. Accordingly, and to reduce the time to first image, a partially reconstructed image can be displayed. In addition to fast image reconstruction, it sometimes is necessary to examine a needle position from different orientations, i.e., views. Accordingly, the present display provides dynamic image reformation wherein axial images are displayed at a very high rate and the operator may reformat the axial images and display the reformatted images in real time. Further, and to provide additional functionality and convenience for an operator, an in-room, or convenient, control including a "reverse and forward" play command button, "save" (or capture), "grid display", and "preset window/levels" functions is provided. By enabling an operator to perform these functions with the remote unit, the system is believed to be easier to use and useful information to the operator in an easily understandable format. Also, and to provide improved display, a flat panel display may be utilized. A user interface for use with the display includes a CT/i Interventional control, three message areas (hierarchical and designated as message area #1, message area #2, and message area #3), and an image control. Also, image magnification can be performed.

    摘要翻译： CT氟系统显示器，其包括用于促进介入过程的有效执行的装置和方法。 该装置和方法通常在此被称为部分图像显示，动态图像重建，室内控制，平板显示，室内显示和放大。 更具体地说，CT氟系统的重要性能参数是首次成像的时间。 因此，为了减少第一图像的时间，可以显示部分重建的图像。 除了快速图像重建之外，有时需要从不同的取向，即视图检查针位置。 因此，本显示器提供动态图像重建，其中以非常高的速率显示轴向图像，并且操作者可以重新格式化轴向图像并且实时显示重新格式化的图像。 此外，为了为操作者提供额外的功能和便利性，包括“反向和向前”播放命令按钮的“保存”（或捕获），“网格显示”和“预设窗口 / levels“功能。 通过使操作员能够使用远程单元执行这些功能，系统被认为更容易使用，并且以易于理解的格式向操作员提供有用的信息。 另外，为了提供改进的显示，可以使用平板显示器。 与显示器一起使用的用户界面包括CT / i介入控制，三个消息区域（分级并指定为消息区域＃1，消息区域＃2和消息区域＃3）和图像控制。 此外，可以执行图像放大。

    Computed tomography fluoroscopy system
    2.
    发明授权
    Computed tomography fluoroscopy system 失效
    计算机断层扫描透视系统

    公开(公告)号：US07006592B2

    公开(公告)日：2006-02-28

    申请号：US10889613

    申请日：2004-07-12

    申请人： Fazle Ali ,  Jiang Hsieh ,  Robert F. Senzig ,  Steven C. Davis ,  Shawn P. Faessler

    发明人： Fazle Ali ,  Jiang Hsieh ,  Robert F. Senzig ,  Steven C. Davis ,  Shawn P. Faessler

    IPC分类号： A61B6/03

    CPC分类号： G06T11/006 ,  A61B6/032 ,  A61B6/4476 ,  A61B6/5258 ,  A61B6/548 ,  G06T2211/421 ,  G06T2211/428 ,  Y10S378/901

    摘要： A CT Fluoro system which, in one embodiment, includes an integrated controller, image reconstruction algorithms for increasing the speed of image display, and an enhanced image display, is described. The integrated controller enables the radiologist to maintain control of the system throughout the fluoro scan. The image reconstruction algorithms are generally directed to increasing the image frame rate or reducing image artifacts, or both, in the CT fluoro scan. The image display generally provides enhanced images and control to the radiologist during a scan procedure.

    摘要翻译： 描述了在一个实施例中包括集成控制器的CT氟系统，用于增加图像显示速度的图像重建算法和增强的图像显示。 集成控制器使放射科医生能够在整个荧光扫描过程中保持对系统的控制。 图像重建算法通常涉及在CT荧光扫描中增加图像帧速率或减少图像伪影或两者。 图像显示通常在扫描过程中向放射科医师提供增强的图像和控制。

    Contrast enhancement for CT systems
    6.
    发明授权
    Contrast enhancement for CT systems 失效
    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。

    Volumetric computed tomography system for cardiac imaging
    7.
    发明授权
    Volumetric computed tomography system for cardiac imaging 有权
    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。

    Methods and apparatus for scanning an object in a computed tomography system
    8.
    发明授权
    Methods and apparatus for scanning an object in a computed tomography system 失效
    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。

    Methods and apparatus for CT scout image processing
    9.
    发明授权
    Methods and apparatus for CT scout image processing 失效
    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。

    Methods and apparatus for scanning an object and displaying an image in a computed tomography system
    10.
    发明授权
    Methods and apparatus for scanning an object and displaying an image in a computed tomography system 失效
    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。