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1.发明授权Semi-automatic segmentation algorithm for pet oncology images 有权Halbautomatisch segmentationsalgorithmusfürbilder in der haustieronkologie
公开(公告)号：EP1365356B1
公开(公告)日：2011-12-14
申请号：EP03252378.9
申请日：2003-04-15
IPC分类号： G06T5/00
CPC分类号： G06K9/342 , G06K2009/366 , G06T7/11 , G06T7/187 , G06T2207/10104 , G06T2207/20104 , G06T2207/20156 , G06T2207/30016 , Y10S128/922
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2.发明公开
公开(公告)号：EP1365356A2
公开(公告)日：2003-11-26
申请号：EP03252378.9
申请日：2003-04-15
IPC分类号： G06T5/00
CPC分类号： G06K9/342 , G06K2009/366 , G06T7/11 , G06T7/187 , G06T2207/10104 , G06T2207/20104 , G06T2207/20156 , G06T2207/30016 , Y10S128/922
摘要： An apparatus and method for segmenting three-dimensional (3D) medical images containing a region of interest (200) is provided that identifies a first set of seed points within (202) the region of interest (200) and a second set of seed points outside (204) the region of interest (200). A first sphere (210) is constructed within the region of interest (200). Voxels contained within the medical image are classified using a spatial constrained fuzzy clustering algorithm. A plurality of second spheres (220) is generated. Ones of the plurality of second spheres (220) are accepted that satisfy the homogeneity function threshold as defined by the spatial constricted fuzzy clustering algorithm. A three-dimensional area is grown that defines the region of interest (200). The region of interest (200) defined by the three-dimensional area is displayed.
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3.发明公开Method and system for providing a maximum intensity projection of a non-planar image 有权一种用于产生非平面图像的最大强度投影的方法和系统
公开(公告)号：EP1052522A3
公开(公告)日：2003-11-05
申请号：EP00304049.0
申请日：2000-05-12
IPC分类号： G01R33/563 , G01R33/54 , G06T11/00
CPC分类号： G01R33/4833 , G01R33/563
摘要： An imaging method and system generates images of non-planar portions of a three dimensional data point array wherein the non-planar portion corresponds to a non-planar object. The method includes selecting at least two different intermediate imaging planes, each selected plane including at least a portion of the object to be imaged, generating cross-sectional views, perpendicular to each intermediate plane, selecting a viewing plane projecting the cross-sectional views onto the viewing plane to generate transition value sets, and combining the transition value sets to generate-values for each pixel in a display.
摘要翻译： 成像方法和系统生成的三维数据点阵列worin的非平面部分的非平面部分的图像速率对应于非平面对象。 该方法包括选择至少两个不同的中间成像平面上，每个平面选择至少包括所述对象的一部分要被成像，产生的截面图，垂直于各中间计划选择观看平面投影的截面图走上 视平面，以生成过渡值集，并且将过渡值设置为生成值用于在显示的每个像素。
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公开(公告)号：EP1324064A1
公开(公告)日：2003-07-02
申请号：EP02258880.0
申请日：2002-12-23
发明人： Cline, Harvey Ellis
IPC分类号： G01R33/38
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 (14) 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 (42) 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 (310) and a second support element (320) attached to first support element on the surface away from the imaging volume (66). A method for reducing vibration in an open MRI system comprises attaching a second support element (320) to each of the support posts on a surface away from the imaging volume.
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5.发明公开Rendering of surfaces from volumetric data employing both dividing and stretching cubes 有权使用骰子除法和延伸体数据的可视化表面
公开(公告)号：EP0994443A3
公开(公告)日：2002-07-17
申请号：EP99308106.6
申请日：1999-10-14
IPC分类号： G06T15/20
CPC分类号： G06T15/08
摘要： Anisotropic data having data spacing significantly larger between layers of data compared with spacing between adjacent data values, is supplemented with additional data to approximate isometric data. The ratio of spacing in one dimension to another is referred to as an aspect ratio A. Preferably, spacing is halved until spacing a modified aspect ratio A' is near unity. Intermediate values are interpolated between existing values of the anisotropic data to create approximate isotropic data having a modified aspect ratio A'. Surface voxels are determined from the approximate isotropic data. The values of the adjacent voxels are then used to determine a vector normal to the surface at the central voxel. This is repeated for a number of central voxels to determine a surface. The viewing elevation angle is converted to an effective elevation angle. The surface is then rendered into a 2D screen image as if it were created from isotropic data. The resulting distorted 2D image is then stretched by an amount related to the approximate aspect ratio A' to result in a high-resolution non-distorted image. The surface then may be displayed.
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6.发明公开
公开(公告)号：EP1052522A2
公开(公告)日：2000-11-15
申请号：EP00304049.0
申请日：2000-05-12
IPC分类号： G01R33/563
CPC分类号： G01R33/4833 , G01R33/563
摘要： An imaging method and system generates images of non-planar portions of a three dimensional data point array wherein the non-planar portion corresponds to a non-planar object. The method includes selecting at least two different intermediate imaging planes, each selected plane including at least a portion of the object to be imaged, generating cross-sectional views, perpendicular to each intermediate plane, selecting a viewing plane projecting the cross-sectional views onto the viewing plane to generate transition value sets, and combining the transition value sets to generate-values for each pixel in a display.
摘要翻译： 成像方法和系统产生三维数据点阵列的非平面部分的图像，其中非平面部分对应于非平面物体。 该方法包括选择至少两个不同的中间成像平面，每个选定的平面包括要成像的对象的至少一部分，垂直于每个中间平面产生横截面视图，选择将横截面视图投影到 观察平面以产生转换值集合，并且将转换值集合组合到显示器中的每个像素的生成值。
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7.发明授权System and method for displaying oblique cut planes within the interior region of a solid object 失效系统和方法，用于显示截面的平面在一个固体本体的内部偏斜
公开(公告)号：EP0791894B1
公开(公告)日：2000-05-17
申请号：EP97108438.9
申请日：1989-09-15
IPC分类号： G06T11/00
CPC分类号： G06T19/00 , G06T15/08 , G06T2219/008
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8.发明公开System and method for displaying oblique cut planes within the interior region of a solid object 失效系统和方法，用于显示截面的平面在一个固体本体的内部偏斜
公开(公告)号：EP0791894A2
公开(公告)日：1997-08-27
申请号：EP97108438.9
申请日：1989-09-15
IPC分类号： G06T11/00
CPC分类号： G06T19/00 , G06T15/08 , G06T2219/008
摘要： A method and apparatus for displaying arbitrary cross-sectional views of a three-dimensional body from a regular array of values of at least one physical property in the interior of the body includes making physical property measurements with such systems as computerized tomographic x-ray systems, or magnetic resonance imaging systems. Cut planes are defined by the user as displacement from, and rotations from, an arbitrary coordinate origin in the data space. An initial plane of pixel positions of arbitrary density is displaced and rotated to correspond to the cut plane. The values for the physical property at the pixel positions are interpolated from the surrounding measurements of actual values. Cross-sectional images are thereby supplied interactively in real time to support; for example, ongoing surgical procedures.
摘要翻译： 一种用于从在所述本体的内部的至少一个物理性质的值的规则阵列显示三维体的任意横截面视图的方法和装置包括制作物性测定用的搜索系统，计算机化断层X射线系统 或磁共振成像系统。 切断面由用户从位移限定，并且从在任意旋转坐标在数据空间的原点。 规划任意密度的像素的初始位置被移位和旋转，以对应于所述切断面。 在像素位置处的物理性质的值是从实际值的周围测量内插。 横截面图像，从而实时地支持交互式提供; 例如，正在进行的外科手术。
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公开(公告)号：EP0412819A2
公开(公告)日：1991-02-13
申请号：EP90308774.0
申请日：1990-08-09
IPC分类号： G01R33/56
CPC分类号： G01R33/5676 , G01R33/446 , G01R33/4824 , G01R33/4836 , G01R33/5617 , G01R33/56308
摘要： A substantially continuous image, recording motion of a portion of a sample, is provided by first NMR exciting, through use of a rotating-gradient (p) pulse signal, a relatively narrow cylindrical region, typically with diameter less than 1 inch, of magnetization intersecting the sample to be imaged and then acquiring the NMR response signal thus excited, in the presence of a readout gradient oriented along the length of the cylindrical excitation beam and establishing position thereon. A Fourier transformation of the acquired data allows display of a real-time record of the profile of the sample along the axis of the cylindrical probe beam. The cylinder-beam axis can be oriented in an arbitrary direction by proper mixing of the excitation and readout gradient fields; use of three orthogonal gradients in a Cartesian coordinate system is presently preferred. Spatial offsetting of the cylindrical beam, from the center of the static magnetic field of the NMR imaging system, to any specific location within the system's imaging volume, can be obtained by frequency modulation of the p pulse RF waveform.
摘要翻译： 通过使用旋转梯度（p）脉冲信号激励通常具有直径小于1英寸的相对窄的圆柱形区域的磁化强度，通过第一NMR激励一部分样品的基本上连续的图像， 与待成像的样本相交，然后在存在沿着圆柱形激发束的长度取向并在其上建立位置的读出梯度的情况下获取由此激发的NMR响应信号。 采集数据的傅里叶变换允许显示样品轮廓沿着圆柱形探测光束的轴线的实时记录。 通过激励和读出梯度场的适当混合，可以将圆柱光束轴定向在任意方向; 目前优选在笛卡尔坐标系中使用三个正交梯度。 通过p脉冲RF波形的频率调制可以获得从NMR成像系统的静态磁场的中心到系统成像体积内的任何特定位置的圆柱形光束的空间偏移。
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10.发明授权Rendering of surfaces from volumetric data employing both dividing and stretching cubes 有权使用骰子除法和延伸体数据的可视化表面
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