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    Mathematical model and a method and apparatus for utilizing the model
    1.
    发明授权
    Mathematical model and a method and apparatus for utilizing the model 失效

    公开(公告)号：US06793496B2

    公开(公告)日：2004-09-21

    申请号：US10085726

    申请日：2002-02-28

    申请人： Peter Michael Edic ,  Harvey Ellis Cline ,  Ahmad Nadeem Ishaque ,  Mehmet Yavuz

    发明人： Peter Michael Edic ,  Harvey Ellis Cline ,  Ahmad Nadeem Ishaque ,  Mehmet Yavuz

    IPC分类号： G09B2328

    CPC分类号： G09B23/28 ,  G06F19/00 ,  G06T11/006 ,  G06T13/20 ,  G06T19/20 ,  G06T2210/41 ,  G06T2211/412 ,  G06T2219/2016 ,  G06T2219/2021

    摘要： The present invention provides a model and a method and apparatus for utilizing the model to simulate an imaging scenario. The model is mathematically defined by analytical basis objects and/or polygonal basis objects. Preferably, the model is a model of the human heart and thorax. Polygonal basis objects are only used to define structures in the model that experience torsion, such as certain structures in the heart that experience torsion during the cardiac cycle. The manner in which the basis objects comprising the model are transformed by scaling, translation and rotation is defined for each basis object. In the case where a basis object experiences torsion, the rotation of the basis object will change as a function of the length along the axis of the basis object about which rotation is occurring. During an imaging system simulation, the model is utilized by a forward projection routine, which integrates the linear attenuation coefficients associated with the rays emitted by a simulated x-ray source and collected by a simulated detector array to obtain line integrals corresponding to forward projection data. The forward projection data is then processed to take into account the physics of the imaging technology, the x-ray source and the detector array. The processed projection data is then processed and back-projected by a reconstruction modeling routine to produce a reconstructed representation of the model of the heart as a function of time.

    Reconstruction of multislice tomographic images from four-dimensional data
    2.
    发明授权
    Reconstruction of multislice tomographic images from four-dimensional data 有权
    从四维数据重建多层次断层图像

    公开(公告)号：US06539074B1

    公开(公告)日：2003-03-25

    申请号：US09648957

    申请日：2000-08-25

    申请人： Mehmet Yavuz ,  Harvey Ellis Cline

    发明人： Mehmet Yavuz ,  Harvey Ellis Cline

    IPC分类号： A61B603

    CPC分类号： A61B6/541 ,  A61B5/7289 ,  A61B5/7292 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/503 ,  A61B6/508 ,  Y10S378/901

    摘要： The invention provides tomographic image generation from four-dimensional projection data of an imaged object. The ability is provided to extract implicit information from time dependent aspects of volumetric projection data corresponding to multiple data acquisition cycles. The result is improved volumetric image quality from volumetric projection data previously used for slice by slice image reconstruction. The invention provides particular advantages for volumetric imaging of a patient's heart, or a portion thereof, at a selected phase of the cardiac cycle.

    摘要翻译： 本发明提供从成像对象的四维投影数据生成断层图像。 提供了从与多个数据采集周期对应的体积投影数据的时间相关方面提取隐含信息的能力。 结果是从先前用于逐层图像重建的体积投影数据改善了体积图像质量。 本发明为心脏周期的选定阶段的患者心脏或其一部分的体积成像提供了特定的优点。

    High field open magnetic resonance magnet with reduced vibration
    5.
    发明授权
    High field open magnetic resonance magnet with reduced vibration 失效
    高磁场开放磁共振磁体，振动减小

    公开(公告)号：US06504372B1

    公开(公告)日：2003-01-07

    申请号：US09683415

    申请日：2001-12-24

    申请人： Harvey Ellis Cline

    发明人： Harvey Ellis Cline

    IPC分类号： G01V300

    CPC分类号： G01R33/3806 ,  G01R33/3854

    摘要： A magnet assembly system for use in an open Magnetic Resonance Imaging (MRI) system comprises a first assembly and a second assembly opposing each other in a longitudinally spaced apart relationship. The first and second assemblies generate a static magnetic field for use in imaging. Further provided is a plurality of support posts attached between the first and second assemblies for maintaining an open imaging volume between the first and second assemblies and for further providing structural support. Each of the support posts comprises a first support element and a second support element attached to first support element on the surface away from the imaging volume. A method for reducing vibration in an open MRI system comprises attaching a second support element to each of the support posts on a surface away from the imaging volume.

    摘要翻译： 用于开放磁共振成像（MRI）系统的磁体组装系统包括第一组件和第二组件，该第一组件和第二组件以纵向间隔开的关系彼此相对。 第一和第二组件产生用于成像的静磁场。 还提供了附接在第一和第二组件之间的多个支撑柱，用于维持第一和第二组件之间的开放成像体积，并进一步提供结构支撑。 每个支撑柱包括第一支撑元件和附接到远离成像体积的表面上的第一支撑元件的第二支撑元件。 用于减少开放MRI系统中的振动的方法包括将第二支撑元件附接到远离成像体积的表面上的每个支撑柱。

    Spiral trajectory calculations for MRI
    6.
    发明授权
    Spiral trajectory calculations for MRI 失效
    MRI的螺旋轨迹计算

    公开(公告)号：US06400152B1

    公开(公告)日：2002-06-04

    申请号：US09494644

    申请日：2000-01-31

    申请人： Harvey Ellis Cline ,  Xuli Zong ,  Neville D. Gai

    发明人： Harvey Ellis Cline ,  Xuli Zong ,  Neville D. Gai

    IPC分类号： G01V300

    CPC分类号： G01R33/446

    摘要： An apparatus and method for Magnetic Resonance Imaging (MRI) by spiral trajectory scanning comprises an MR imaging device for acquiring and processing data samples of an object to be imaged, wherein the data samples are acquired by spiral trajectory scanning. An interface is coupled to the MR imaging device for receiving operator-defined spiral scanning parameters, and a computer is coupled to the interface and the MR imaging device. The computer is configured to generate an approximated spiral trajectory in k-space in accordance with operator-defined spiral scanning parameters. The approximated spiral trajectory is used by the MR imaging system to perform spiral trajectory scanning.

    摘要翻译： 用于通过螺旋轨迹扫描的磁共振成像（MRI）的装置和方法包括用于获取和处理待成像对象的数据样本的MR成像装置，其中通过螺旋轨迹扫描获取数据样本。 接口耦合到MR成像设备，用于接收操作者定义的螺旋扫描参数，并且计算机耦合到接口和MR成像设备。 计算机被配置为根据操作者定义的螺旋扫描参数在k空间中生成近似的螺旋轨迹。 近似的螺旋轨迹由MR成像系统用于执行螺旋轨迹扫描。

    4D KAPPA5 Gaussian noise reduction
    7.
    发明授权
    4D KAPPA5 Gaussian noise reduction 失效
    4D KAPPA5高斯噪声降低

    公开(公告)号：US06204853B1

    公开(公告)日：2001-03-20

    申请号：US09058100

    申请日：1998-04-09

    申请人： Harvey Ellis Cline ,  Allen Robert Tannenbaum

    发明人： Harvey Ellis Cline ,  Allen Robert Tannenbaum

    IPC分类号： G06K940

    CPC分类号： G06K9/40 ,  G06T5/002 ,  G06T5/10 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/20182 ,  H04N1/4092

    摘要： The noise reduction system of the present invention takes into account that noise is random with little between images adjacent physically, and in sampling time. It also takes into account the fact that some sequences of images are cyclical and “wrap around” in time with the beginning closely resembling the end of the cycle. A filter was developed which would smooth noise in a direction along an edge, but will not blur across an edge. It operates by determining vectors tangential to a surface point p, at a current voxel, and projecting 4D data onto the tangential vectors. A curvature matrix B&agr;&bgr; is determined. The eigenvalues of curvature matrix B&agr;&bgr; are determined to result in three curvatures for 4 dimensions. If the sign of all of the eigenvalues is the same, the current voxel is filtered, else, it is unchanged. This filtering is repeated for a number of voxels as the current voxel within a desired region for a single iteration. Preferably, this is repeated for several iterations to result in filtered data with reduced noise and little change in detail. The filtered data may then be segmented to separate structures. The segmented structures may then be used in analysis, such as in medical diagnosis.

    摘要翻译： 本发明的降噪系统考虑到物理上相邻的图像和采样时间之间的噪声几乎是随机的。 它还考虑到一些事实，即图像的一些序列是周期性的，并且在时间上“缠绕”，其开始与周期结束非常类似。 已经开发了一种滤光器，其可以沿着边缘的方向平滑噪声，但是不会在边缘上模糊。 它通过确定在当前体素上与表面点p相切的矢量并将4D数据投影到切向矢量上来操作。 确定曲率矩阵Balphabeta。 曲率矩阵Balphabeta的特征值被确定为导致4个维度的三个曲率。 如果所有特征值的符号相同，则对当前体素进行过滤，否则不变。 对于多次体素重复该过滤，作为单个迭代期望的区域内的当前体素。 优选地，这被重复进行几次迭代以产生具有降低的噪声并且具有细微变化的滤波数据。 然后可以将经滤波的数据分段以分离结构。 然后可以在分析中使用分段结构，例如在医学诊断中。

    Enhanced visualization of weak image sources in the vicinity of dominant sources
    8.
    发明授权
    Enhanced visualization of weak image sources in the vicinity of dominant sources 失效
    增强主要来源附近弱图像源的可视化

    公开(公告)号：US6058218A

    公开(公告)日：2000-05-02

    申请号：US967654

    申请日：1997-11-10

    申请人： Harvey Ellis Cline

    发明人： Harvey Ellis Cline

    IPC分类号： A61B5/055 ,  A61B6/00 ,  G06T1/00 ,  G06T5/00 ,  G06T5/30 ,  G06K9/40

    CPC分类号： A61B6/481 ,  A61B6/504 ,  G06T5/002 ,  G06T5/30 ,  G06T7/0081 ,  G06T7/0091 ,  A61B5/055 ,  G06T2207/10088 ,  G06T2207/20101 ,  G06T2207/30101

    摘要： A volumetric data set having a high intensity, dominant structure, near smaller, less intense structures is smoothed and segmented to separate the dominant structure. The dominant structure is masked out to result in the smaller, less intense structures which are displayed. For example, dominant structures such as the blood pool in atria, ventricles, and the aorta of a 3D angiography data set is segmented and removed from the data set using mathematical morphology operations to result in an enhanced data set. The enhanced data set is displayed by conventional means such as a maximum intensity projection (MIP) at different views to yield images of coronary arteries.

    摘要翻译： 具有高强度，主导结构，接近较小，不太强烈结构的体积数据集被平滑和分段以分离主导结构。 主导结构被掩盖，导致显示的较小，较不强烈的结构。 例如，使用数学形态学运算来分割并从数据集中去除主要结构，例如心房中的血池，脑室和3D血管造影数据集的主动脉，以产生增强的数据集。 增强数据集通过常规手段显示，例如在不同视图下的最大强度投影（MIP），以产生冠状动脉的图像。

    System and method for treatment of a prostate with a phase fresnel probe
    9.
    发明授权
    System and method for treatment of a prostate with a phase fresnel probe 失效
    用相位菲涅耳探针治疗前列腺的系统和方法

    公开(公告)号：US5817036A

    公开(公告)日：1998-10-06

    申请号：US803472

    申请日：1997-02-20

    申请人： Thomas Richard Anthony ,  Harvey Ellis Cline

    发明人： Thomas Richard Anthony ,  Harvey Ellis Cline

    IPC分类号： A61B18/00 ,  A61B17/00 ,  A61B17/32 ,  B06B1/02 ,  A61B17/22

    CPC分类号： A61B17/320068 ,  A61B2017/00274 ,  A61B2017/320072 ,  A61B2018/00547

    摘要： A system for treating a prostate includes an acoustic carrier, a phase fresnel zone in a section of the acoustic carrier, and an acoustic transducer. The phase fresnel zone is formed in the acoustic carrier adjacent a first end of the acoustic carrier and extends at least partially around the outer surface of the acoustic carrier. An acoustic transducer is coupled to a second end of the acoustic carrier. In treating the prostate, which surrounds a urethra, the acoustic carrier is inserted into the urethra and positioned so that the phase fresnel zone is situated in a region of the urethra surrounded by the prostate. Acoustic waves are transmitted into the second end of the acoustic carrier and the phase fresnel zone focuses the acoustic waves to constructively interfere at the location in the prostate. By moving the acoustic carrier, the phase fresnel zone may be moved along at least a portion of the region of the urethra surrounded by the prostate while the acoustic waves are being transmitted.

    摘要翻译： 用于治疗前列腺的系统包括声载体，声载体的一部分中的相位菲涅耳区和声换能器。 相邻菲涅耳区形成在邻近声学载体的第一端的声学载体中并且至少部分地围绕声学载体的外表面延伸。 声换能器耦合到声载体的第二端。 在治疗包围尿道的前列腺时，将声学载体插入尿道并定位成使得相位菲涅耳区位于由前列腺包围的尿道的区域中。 声波被传送到声载体的第二端，相位菲涅耳区聚焦声波以建构性地干扰前列腺中的位置。 通过移动声载体，相位菲涅尔区域可以在声波被传输的同时沿着由前列腺包围的尿道的区域的至少一部分移动。