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    Methods and systems for positron emission tomography data correction
    3.
    发明授权
    Methods and systems for positron emission tomography data correction 有权
    正电子发射断层扫描数据校正的方法和系统

    公开(公告)号：US07173248B2

    公开(公告)日：2007-02-06

    申请号：US10969716

    申请日：2004-10-20

    申请人： Steven Gerard Ross ,  Charles William Stearns ,  Ravindra Mohan Manjeshwar

    发明人： Steven Gerard Ross ,  Charles William Stearns ,  Ravindra Mohan Manjeshwar

    IPC分类号： G01T1/164

    CPC分类号： G06T11/006 ,  G06T2211/424

    摘要： Methods and systems for image overlap correction are provided. The method includes acquiring the emission projection data from a plurality of scan frames that extend across at least a portion of a length of an object being imaged wherein elements of the object lie between a region of overlap between two successive frames. The method further includes iteratively reconstructing a 3D image volume from multi-frame emission projection data by updating an estimate of 3D image volume using emission projection data from the plurality of frames within an iterative reconstruction loop.

    摘要翻译： 提供了图像重叠校正的方法和系统。 该方法包括从多个扫描帧中获取发射投影数据，所述多个扫描帧延伸穿过被成像物体的长度的至少一部分，其中物体的元件位于两个连续帧之间的重叠区域之间。 该方法还包括通过使用来自迭代重建循环内的多个帧的发射投影数据更新3D图像体积的估计来从多帧发射投影数据中迭代重建3D图像体积。

    Methods and systems for enhanced tomographic imaging
    4.
    发明授权
    Methods and systems for enhanced tomographic imaging 有权
    增强断层成像的方法和系统

    公开(公告)号：US08903152B2

    公开(公告)日：2014-12-02

    申请号：US13539028

    申请日：2012-06-29

    申请人： Evren Asma ,  Ravindra Mohan Manjeshwar ,  Steven Gerard Ross ,  Sangtae Ahn ,  David Erik Chevalier

    发明人： Evren Asma ,  Ravindra Mohan Manjeshwar ,  Steven Gerard Ross ,  Sangtae Ahn ,  David Erik Chevalier

    IPC分类号： G06K9/00

    CPC分类号： G06T11/006 ,  G06T2211/424

    摘要： Embodiments of methods, systems and non-transitory computer readable media for tomographic imaging are presented. 3D TOF projection data is processed to generate corresponding data in a designated format that allows for computationally cheaper image reconstruction than the 3D TOF projection data. Further, one or more preliminary images are reconstructed from the processed data using a particular image reconstruction technique for one or more iterations. To that end, one or more imaging parameters are iteratively varied every one or more iterations. The imaging parameters, for example, include the designated format, the image reconstruction technique and one or more image quality characteristics. One or more intermediate images are reconstructed from the one or more preliminary images using the iteratively varying imaging parameters. Further, 3D TOF images having the one or more designated image quality characteristics are generated using the one or more intermediate images and the iteratively varying imaging parameters.

    摘要翻译： 提出了用于断层成像的方法，系统和非暂时计算机可读介质的实施例。 3D TOF投影数据被处理以产生指定格式的相应数据，这允许比3D TOF投影数据更便宜的图像重建。 此外，使用用于一次或多次迭代的特定图像重建技术，从经处理的数据重建一个或多个预备图像。 为此，每一次或多次迭代迭代地改变一个或多个成像参数。 成像参数例如包括指定格式，图像重建技术和一个或多个图像质量特性。 使用迭代变化的成像参数，从一个或多个初步图像重建一个或多个中间图像。 此外，使用一个或多个中间图像和迭代变化的成像参数来生成具有一个或多个指定图像质量特性的3D TOF图像。

    METHODS AND SYSTEMS FOR ENHANCED TOMOGRAPHIC IMAGING
    5.
    发明申请
    METHODS AND SYSTEMS FOR ENHANCED TOMOGRAPHIC IMAGING 有权
    用于增强图像成像的方法和系统

    公开(公告)号：US20140003689A1

    公开(公告)日：2014-01-02

    申请号：US13539028

    申请日：2012-06-29

    申请人： Evren Asma ,  Ravindra Mohan Manjeshwar ,  Steven Gerard Ross ,  Sangtae Ahn ,  David Erik Chevalier

    发明人： Evren Asma ,  Ravindra Mohan Manjeshwar ,  Steven Gerard Ross ,  Sangtae Ahn ,  David Erik Chevalier

    IPC分类号： G06K9/00

    CPC分类号： G06T11/006 ,  G06T2211/424

    摘要： Embodiments of methods, systems and non-transitory computer readable media for tomographic imaging are presented. 3D TOF projection data is processed to generate corresponding data in a designated format that allows for computationally cheaper image reconstruction than the 3D TOF projection data. Further, one or more preliminary images are reconstructed from the processed data using a particular image reconstruction technique for one or more iterations. To that end, one or more imaging parameters are iteratively varied every one or more iterations. The imaging parameters, for example, include the designated format, the image reconstruction technique and one or more image quality characteristics. One or more intermediate images are reconstructed from the one or more preliminary images using the iteratively varying imaging parameters. Further, 3D TOF images having the one or more designated image quality characteristics are generated using the one or more intermediate images and the iteratively varying imaging parameters.

    摘要翻译： 提出了用于断层成像的方法，系统和非暂时计算机可读介质的实施例。 3D TOF投影数据被处理以产生指定格式的相应数据，这允许比3D TOF投影数据更便宜的图像重建。 此外，使用用于一次或多次迭代的特定图像重建技术，从经处理的数据重建一个或多个预备图像。 为此，每一次或多次迭代迭代地改变一个或多个成像参数。 成像参数例如包括指定格式，图像重建技术和一个或多个图像质量特性。 使用迭代变化的成像参数，从一个或多个初步图像重建一个或多个中间图像。 此外，使用一个或多个中间图像和迭代变化的成像参数来生成具有一个或多个指定图像质量特性的3D TOF图像。

    Apparatus and methods for geometric calibration of positron emission tomography systems
    6.
    发明授权
    Apparatus and methods for geometric calibration of positron emission tomography systems 有权
    正电子发射断层扫描系统几何校准的装置和方法

    公开(公告)号：US08452064B2

    公开(公告)日：2013-05-28

    申请号：US12632393

    申请日：2009-12-07

    申请人： Steven Gerard Ross ,  Timothy Deller ,  Charles William Stearns

    发明人： Steven Gerard Ross ,  Timothy Deller ,  Charles William Stearns

    IPC分类号： G06K9/36

    CPC分类号： A61B6/037 ,  A61B6/583 ,  G06T11/005

    摘要： Apparatus and methods for geometric calibration of positron emission tomography (PET) systems are provided. One method includes obtaining scan data for a uniform phantom and generating reference images based on the scan data for the uniform phantom. The method further includes reconstructing images of the uniform phantom using a PET imaging system and determining a geometric calibration for the PET imaging system based on a comparison of the reconstructed images and the reference images.

    摘要翻译： 提供了正电子发射断层摄影（PET）系统几何校准的装置和方法。 一种方法包括获得用于均匀体模的扫描数据，并且基于用于均匀体模的扫描数据产生参考图像。 该方法还包括使用PET成像系统重建均匀体模的图像，并且基于重建图像与参考图像的比较来确定PET成像系统的几何校准。

    APPARATUS AND METHODS FOR GEOMETRIC CALIBRATION OF POSITRON EMISSION TOMOGRAPHY SYSTEMS
    7.
    发明申请
    APPARATUS AND METHODS FOR GEOMETRIC CALIBRATION OF POSITRON EMISSION TOMOGRAPHY SYSTEMS 有权
    位置校正系统的几何校准装置和方法

    公开(公告)号：US20110135179A1

    公开(公告)日：2011-06-09

    申请号：US12632393

    申请日：2009-12-07

    申请人： Steven Gerard Ross ,  Timothy Deller ,  Charles William Stearns

    发明人： Steven Gerard Ross ,  Timothy Deller ,  Charles William Stearns

    IPC分类号： G06K9/62

    CPC分类号： A61B6/037 ,  A61B6/583 ,  G06T11/005

    摘要： Apparatus and methods for geometric calibration of positron emission tomography (PET) systems are provided. One method includes obtaining scan data for a uniform phantom and generating reference images based on the scan data for the uniform phantom. The method further includes reconstructing images of the uniform phantom using a PET imaging system and determining a geometric calibration for the PET imaging system based on a comparison of the reconstructed images and the reference images.

    摘要翻译： 提供了正电子发射断层摄影（PET）系统几何校准的装置和方法。 一种方法包括获得用于均匀体模的扫描数据，并且基于用于均匀体模的扫描数据产生参考图像。 该方法还包括使用PET成像系统重建均匀体模的图像，并且基于重建图像与参考图像的比较来确定PET成像系统的几何校准。

    Systems and methods for reducing radiation dosage
    8.
    发明授权
    Systems and methods for reducing radiation dosage 失效
    降低辐射剂量的系统和方法

    公开(公告)号：US07254215B2

    公开(公告)日：2007-08-07

    申请号：US10695211

    申请日：2003-10-28

    申请人： Steven Gerard Ross ,  Thomas Louis Toth ,  Willi Walter Hampel ,  Bruce Matthew Dunham

    发明人： Steven Gerard Ross ,  Thomas Louis Toth ,  Willi Walter Hampel ,  Bruce Matthew Dunham

    IPC分类号： G21K1/04

    CPC分类号： G21K1/04

    摘要： An imaging system including is described. The imaging system includes a radiation source configured to generate a beam, a collimator configured to collimate the beam to generate a collimated beam, and a detector configured to detect the collimated beam. The collimator is one of a first collimator with a curved contour proportional to a contour of the detector, a second collimator with blades, where slopes of two oppositely-facing surfaces of at least one of the blades are different from each other, and a third collimator having at least two sets of plates, where the plates in a set pivot with respect to each other.

    摘要翻译： 描述了包括的成像系统。 成像系统包括被配置为产生光束的辐射源，被配置为准直光束以产生准直光束的准直器以及被配置为检测准直光束的检测器。 准直器是具有与检测器的轮廓成比例的弯曲轮廓的第一准直器之一，具有叶片的第二准直器，其中至少一个叶片的两个相对面的表面的斜面彼此不同，第三准直器 准直器具有至少两组板，其中一组中的板相对于彼此枢转。