公开(公告)号：US07646842B2

公开(公告)日：2010-01-12

申请号：US11233670

申请日：2005-09-23

Applicant: Jiang Hsieh ,  Xiangyang Tang

Inventor： Jiang Hsieh ,  Xiangyang Tang

IPC: A61B6/00

CPC classification number: G01N23/046 ,  A61B6/027 ,  A61B6/032 ,  G01N2223/419 ,  G06T11/005

Abstract: A method for obtaining data includes scanning an object using a CT imaging system having at least two detector rows to acquire projection data, wherein the projection data includes at least some data obtained from at least two rows of the detector array, and reconstructing data representative an image of the object utilizing the projection data wherein the reconstruction includes pipelining the acquired projection data through a pipeline of operations including column-filtering, tomographic filtering, and backprojection. Thick reconstructed images using 3D backprojection can be obtained with significantly lessened artifacts relative to conventional 3D backprojection image reconstructions.

Abstract translation: 一种用于获取数据的方法包括使用具有至少两个检测器行的CT成像系统来扫描物体以获取投影数据，其中所述投影数据包括从所述检测器阵列的至少两行获得的至少一些数据，以及重建表示 使用投影数据的对象的图像，其中重建包括通过包括列过滤，断层扫描和反投影的操作流水线对所获取的投影数据进行流水线化。 相对于传统的3D反投影图像重建，可以获得使用3D反投影的厚重构图像，并显着减少伪像。

公开(公告)号：US07636462B2

公开(公告)日：2009-12-22

申请号：US10944097

申请日：2004-09-17

Applicant: Jianying Li ,  Jiang Hsieh ,  Xiangyang Tang ,  Darin Robert Okerlund ,  Melissa L. Vass ,  Kelly Ann Mohr

Inventor： Jianying Li ,  Jiang Hsieh ,  Xiangyang Tang ,  Darin Robert Okerlund ,  Melissa L. Vass ,  Kelly Ann Mohr

IPC: G06K9/00

CPC classification number: G06T5/20 ,  G06T3/0056 ,  G06T11/008 ,  Y10S128/922

Abstract: A method and system for filtering medical images is described. The described method of filtering medical images includes receiving image data including a plurality of images from an image scan, determining a number of interpolation elements based on a slice thickness of the plurality of images, and filtering the image data using the determined interpolation elements.

Abstract translation: 描述了用于过滤医学图像的方法和系统。 所描述的过滤医学图像的方法包括从图像扫描接收包括多个图像的图像数据，基于多个图像的切片厚度确定插值元素的数量，以及使用所确定的插值元素对图像数据进行滤波。

公开(公告)号：US07613275B2

公开(公告)日：2009-11-03

申请号：US11305929

申请日：2005-12-19

Applicant: Jianying Li ,  Jiang Hsieh ,  Melissa L. Vass ,  Xiangyang Tang ,  John Howard Londt ,  Darin Robert Okerlund

Inventor： Jianying Li ,  Jiang Hsieh ,  Melissa L. Vass ,  Xiangyang Tang ,  John Howard Londt ,  Darin Robert Okerlund

IPC: A61B6/00

CPC classification number: A61B6/032 ,  A61B6/027 ,  A61B6/463 ,  A61B6/503 ,  A61B6/583

Abstract: A method for combining images acquired using helical half-scan imaging comprises identifying an image plane within an overlap region comprising data from first and second view streams representative of first and second cycles of acquired image data. The image plane comprises the same anatomical structure. First and second weighting functions are calculated for first and second images based on first and second tube positions of an x-ray tube. The first and second images correspond to the image plane and are from the first and second view streams, respectively. The first and second tube positions also correspond to the image plane. A weighted image is then formed based on the first and second weighting functions and the first and second images.

Abstract translation: 一种用于组合使用螺旋半扫描成像获取的图像的方法包括在包括表示所获取的图像数据的第一和第二周期的第一和第二视图流的数据的重叠区域内识别图像平面。 图像平面包括相同的解剖结构。 基于X射线管的第一和第二管位置对第一和第二图像计算第一和第二加权函数。 第一和第二图像分别对应于图像平面并且分别来自第一和第二视图流。 第一和第二管位置也对应于图像平面。 然后基于第一和第二加权函数以及第一和第二图像形成加权图像。

公开(公告)号：US07173996B2

公开(公告)日：2007-02-06

申请号：US10892931

申请日：2004-07-16

Applicant: Xiangyang Tang ,  Jiang Hsieh ,  Roy Arnulf Helge Nilsen

Inventor： Xiangyang Tang ,  Jiang Hsieh ,  Roy Arnulf Helge Nilsen

IPC: G01N23/00

CPC classification number: G06T11/006 ,  A61B6/027 ,  A61B6/032 ,  Y10S378/901

Abstract: A method for reconstructing an image of an object utilizing a cone-beam volumetric computed tomographic imaging apparatus includes helically scanning the object with a radiation source utilizing the cone-beam volumetric computed tomographic imaging apparatus; selecting radiation beams emitted by the radiation source passing through a pixel P having a smallest cone angle in comparison with that of the conjugate rays of the radiation beam; and reconstructing an image of the object utilizing projection data obtained from the selected radiation beams while avoiding the use of redundant projection data from unselected conjugate rays of the selected radiation beams.

Abstract translation: 使用锥束体积计算机断层成像装置重建物体的图像的方法包括利用锥束体积计算机断层摄影装置用辐射源螺旋扫描物体; 选择辐射源发射的辐射束，其通过与辐射束的共轭射线相比具有最小锥角的像素P; 以及使用从所选择的辐射束获得的投影数据来重建物体的图像，同时避免使用来自所选择的辐射束的未选择的共轭射线的冗余投影数据。

公开(公告)号：US20060262893A1

公开(公告)日：2006-11-23

申请号：US11130769

申请日：2005-05-17

Applicant: Xiangyang Tang ,  Jiang Hsieh

Inventor： Xiangyang Tang ,  Jiang Hsieh

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

CPC classification number: G06T11/006 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  G06T2211/421

Abstract: Methods and systems for generating images from a set of projection data acquired during a CT scan is provided. The system includes a computer programmed to utilize at least one of a cone angle dependent view weighting and an image plane dependent view weighting to generate an image.

公开(公告)号：US20060018439A1

公开(公告)日：2006-01-26

申请号：US10895704

申请日：2004-07-21

Applicant: Xiangyang Tang ,  Jiang Hsieh ,  Sandeep Dutta ,  Roy Helge Nilsen

Inventor： Xiangyang Tang ,  Jiang Hsieh ,  Sandeep Dutta ,  Roy Helge Nilsen

IPC: H05G1/00

CPC classification number: A61B6/032 ,  A61B6/027 ,  A61B6/583 ,  G06T11/005

Abstract: A method for producing an image of an object includes scanning an object with an imaging apparatus to collect projection data of the object utilizing cone sampling. The projection data is rebinned in a row-wise, fan-to-parallel fashion to produce rebinned data and the rebinned data is view-weighted to produce view-weighted data. The method further includes filtering the view-weighted data utilizing a row-wise ramp filter to produce filtered data and generating an image of the object utilizing the filtered data and a three-dimensional (3D) backprojection.

公开(公告)号：US20050175142A1

公开(公告)日：2005-08-11

申请号：US10774554

申请日：2004-02-09

Applicant: Xiangyang Tang

Inventor： Xiangyang Tang

IPC: A61B6/00 ,  A61B6/03 ,  G01N23/00 ,  G06T11/00 ,  G21K1/12 ,  H05G1/60

CPC classification number: G06T11/005 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/583 ,  Y10S378/901

Abstract: A method for obtaining data useful for reconstructing an image of an object includes performing a cone beam helical Computed Tomography (CT) scan of an object to obtain projection data from a plurality of detector rows, and interpolating the obtained projection data to generate interpolated data along at least one curve that crosses at least two detector rows.

Abstract translation: 一种用于获得用于重建物体的图像的数据的方法包括：对物体执行锥形束螺旋计算机断层摄影（CT）扫描，以获得来自多个检测器行的投影数据，以及内插所获得的投影数据以产生内插数据 至少一条穿过至少两个检测器行的曲线。

公开(公告)号：US08364244B2

公开(公告)日：2013-01-29

申请号：US11286938

申请日：2005-11-23

Applicant: Sandeep Dutta ,  Jianying Li ,  John Howard Londt ,  Melissa L. Vass ,  Xiangyang Tang ,  Darin R. Okerlund ,  Jiang Hsieh

Inventor： Elisabeth Angelos ,  Sandeep Dutta ,  Jianying Li ,  John Howard Londt ,  Melissa L. Vass ,  Xiangyang Tang ,  Darin R. Okerlund ,  Jiang Hsieh

IPC: A61B5/05

CPC classification number: G06T11/005 ,  A61B5/055 ,  A61B5/7289 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/503 ,  A61B8/08 ,  G06T2211/412

Abstract: Methods and systems for generating computed tomographic (CT) images from image data acquired during different biological cycles are provided. A computer is programmed to receive a plurality of scan data acquired during a gated acquisition window of each of a plurality of biological cycles, blend the scan data acquired during a first of the plurality of biological cycles with the scan data acquired during a second of the plurality of biological cycles, and construct a final image from the blended data.

Abstract translation: 提供了在不同生物循环期间从图像数据生成计算机断层摄影（CT）图像的方法和系统。 计算机被编程为接收在多个生物循环中的每一个的选通采集窗口期间采集的多个扫描数据，将在多个生物学循环中的第一个期间获取的扫描数据与在第二个 多个生物循环，并从混合数据构建最终图像。

公开(公告)号：US07570733B2

公开(公告)日：2009-08-04

申请号：US11149993

申请日：2005-06-10

Applicant: Jiang Hsieh ,  Jianying Li ,  Xiangyang Tang

Inventor： Jiang Hsieh ,  Jianying Li ,  Xiangyang Tang

IPC: A61B6/00

CPC classification number: A61B6/503 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/541 ,  G06T11/005 ,  G06T2211/404 ,  G06T2211/412

Abstract: The present invention is directed to a method and system of blending data acquired from neighboring partial-scans. Data is acquired from an imaging volume in a series of fractional or partial-scans. Each partial-scan samples a fraction of the imaging volume. During reconstruction, data from the partial-scans are combined to compensate for the unsampled portion of the imaging volume that is experienced in any partial-scan alone.

Abstract translation: 本发明涉及一种混合从相邻部分扫描获得的数据的方法和系统。 在一系列分数或部分扫描中从成像体积获取数据。 每个部分扫描采集成像体积的一部分。 在重构期间，来自部分扫描的数据被组合以补偿仅在任何部分扫描中经历的成像体积的未采样部分。

公开(公告)号：US07394887B2

公开(公告)日：2008-07-01

申请号：US10966415

申请日：2004-10-15

Applicant: Jiang Hsieh ,  Xiangyang Tang

Inventor： Jiang Hsieh ,  Xiangyang Tang

IPC: A61B6/03

CPC classification number: G06T11/006 ,  A61B6/027 ,  A61B6/4447 ,  G06T11/005

Abstract: A method for reconstructing tilted cone beam data acquired using a CT apparatus. The CT apparatus has a gantry and a table. The gantry has an x-ray source and a detector array with columns and rows. The gantry is tilted at a gantry tilt angle with respect to the table and a plurality of projection data is acquired using the CT apparatus. Fan-parallel rebinning is performed on a row by row basis to form a plurality of reconstructed pixels. The coordinate locations of the plurality of reconstructed pixels are adjusted based on the gantry tilt angle and used to form a reconstructed image.

Abstract translation: 一种用于重建使用CT装置获取的倾斜锥形束数据的方法。 CT装置具有龙门架和桌子。 台架具有x射线源和具有列和行的检测器阵列。 台架以相对于工作台的台架倾斜角度倾斜，并且使用CT装置获取多个投影数据。 以逐行为基础进行风扇平行重组以形成多个重构像素。 基于台架倾斜角来调整多个重建像素的坐标位置，并用于形成重构图像。