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公开(公告)号：EP1256012A1
公开(公告)日：2002-11-13
申请号：EP01985356.3
申请日：2001-11-27
发明人： BREEUWER, Marcel
IPC分类号： G01R33/567
CPC分类号： G01R33/56509 , G01R33/56341
摘要： The invention relates to a method of visualizing the perfusion of an organ, notably the perfusion of the myocardium of the heart. A series of MR perfusion images is displayed on a visual display unit. Each pair of successive images from a series of images is transformed in such a manner that the organ that is shown on the display unit essentially maintains its position.
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公开(公告)号：EP0829163B1
公开(公告)日：2002-08-07
申请号：EP97905352.7
申请日：1997-03-13
IPC分类号： H04N1/41
CPC分类号： H04N1/41 , H04N19/20 , H04N19/649
摘要： A method of encoding images (1) including areas (11) of relevant pixels and areas (12) of irrelevant pixels (e.g. a background) is disclosed. The pixels of the irrelevant area are replaced (4) by pseudo-pixels smoothing the transition between said areas. The image thus obtained is subsequently subjected to conventional image coding (5) which now yields considerably fewer bits. At the receiver end, the pseudo-pixels are replaced (9) by predetermined background pixels to reconstruct the original boundaries (13). If the boundary between both areas is not known in advance, the boundary is detected (2), encoded (3) and transmitted to the receiver. The invention is particularly applicable to compression of medical images having circular areas of interest, but may also be used to encode other video images having irrelevant areas such as videophone images in which a head-and-shoulder area constitutes relevant information only.
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公开(公告)号：EP1815426B1
公开(公告)日：2011-07-27
申请号：EP05802807.7
申请日：2005-11-08
IPC分类号： G06T7/00
CPC分类号： G06T7/33 , G06T2207/30101
摘要： The present invention relates to a system (1) and method for registration of medical image (10,11). Furthermore the invention relates to a computer program (5) for registration of medical images (10,11), when the computer program (5) is executed in a computer (2). In order to provide a more accurate registration transformation of medical images it is suggested to detect insufficiently similar areas (14,14’,25,26) and to exclude them from the registration by means of an exclusion mask (22,24,27) that indicates which pixels/voxels should not be included during the registration process.
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24.发明公开VISUALIZATION OF STRESS LEVEL CARDIAC FUNCTIONAL ANALYSIS RESULTS 审中-公开VISUALISIERUNG VON ANALYSEERGEBNISSEN DER HERZFUNKTION UNTER STRESSBEDINGUNGEN
公开(公告)号：EP2066228A2
公开(公告)日：2009-06-10
申请号：EP07825952.0
申请日：2007-07-23
发明人： BREEUWER, Marcel
IPC分类号： A61B5/00
CPC分类号： A61B5/1075 , A61B5/742 , A61B6/503 , G06F19/00 , G06T7/0012 , G06T7/20 , G06T11/206 , G06T2200/24 , G06T2207/10072 , G06T2207/30048 , G16H40/63
摘要： The invention relates to a system (100) for visualizing a cardiac parameter at a plurality of positions in a myocardium and at a plurality of stress levels, the system comprising a determination unit (110) for determining a value of the cardiac parameter at a position from the plurality of positions in the myocardium and at a stress level from the plurality of stress levels on the basis of stress level cardiac functional data, and a visualization unit (120) for visualizing the determined value of the cardiac parameter by displaying a point in a viewing plane. The visualized points are defined by their polar coordinates in a polar coordinate system in the viewing plane. A radial coordinate of the point visualizes the determined value of the cardiac parameter. An angular coordinate of the point visualizes an angular coordinate of the position in the myocardium in a cylindrical coordinate system. Thus, the system allows easy numerical comparison of local myocardial contractions at different stress level values.
摘要翻译： 本发明涉及一种用于在心肌和多个应力水平的多个位置处可视化心脏参数的系统（100），该系统包括：确定单元（110），用于确定位置处心脏参数的值 基于应力水平的心脏功能数据从心肌的多个位置和来自多个应力水平的应力水平，以及可视化单元（120），用于通过显示心脏参数的点来可视化所确定的心脏参数值 观景平面。 可视化点由观察平面中的极坐标系中的极坐标定义。 该点的径向坐标可以显示心脏参数的确定值。 点的角坐标可以在圆柱坐标系中显示心肌位置的角坐标。 因此，该系统允许在不同的应力水平值下容易地数值比较局部心肌收缩。
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公开(公告)号：EP1820156A2
公开(公告)日：2007-08-22
申请号：EP05815093.9
申请日：2005-11-24
IPC分类号： G06T5/00
CPC分类号： G06T7/149 , G06T7/12 , G06T2207/10088 , G06T2207/20116 , G06T2207/30016 , G06T2207/30101
摘要： A method and Computer Program Product for segmenting a three-dimensional digital representation of an anatomical structure, in which a temporary replacement of intensity values is performed in a specified volume with a substitute intensity value corresponding to healthy anatomical structure. The segmentation of an outer boundary of the blood vessel is performed before the original intensity values are restored. After restoration of the original intensity values, a thorough segmentation of the specified volume and any lesions contained therein is performed.
摘要翻译： 一种用于分割解剖结构的三维数字表示的方法和计算机程序产品，其中在具有对应于健康解剖结构的替代强度值的指定体积中执行强度值的临时替换。 在原始强度值恢复之前执行血管外边界的分割。 恢复原始强度值后，执行指定体积和其中包含的任何病变的彻底分割。
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公开(公告)号：EP1290557B1
公开(公告)日：2004-10-13
申请号：EP01945129.3
申请日：2001-05-11
发明人： BEUKER, Rob, A. , BREEUWER, Marcel
CPC分类号： G06T3/0075 , A61B6/5241 , G06T7/30
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公开(公告)号：EP1402475A2
公开(公告)日：2004-03-31
申请号：EP02715676.9
申请日：2002-01-31
IPC分类号： G06T5/00
CPC分类号： G06T7/11 , A61B6/507 , G06T2207/10108 , G06T2207/30004
摘要： The invention relates to the analysis of successive data sets. A local intensity variation is formed from such successive data sets, that is, from data values in successive data sets at corresponding positions in each of the data sets. A region of interest is localized in the individual data sets on the basis of the local intensity variation. In particular the time derivative of the local intensity variation is used to localize the region of interest. The invention can be used notably for cardiological applications so as to separate the image of the myocardium from a sequence of 3D magnetic resonance reconstruction images.
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28.发明公开
公开(公告)号：EP1382014A2
公开(公告)日：2004-01-21
申请号：EP01985822.4
申请日：2001-11-22
发明人： BREEUWER, Marcel
IPC分类号： G06T1/00
CPC分类号： G06T7/66 , G06T2207/30048
摘要： The invention relates to a method of deriving the myocardial region from one or more MR images. Left and right ventricle contours (1, 2) are determined. The thickness or width (D) of the myocardial region is computed from the distance between these contours in a predetermined part (A) of the image (images). The location of the myocardial region outside the preset region is derived on the basis of this distance.
摘要翻译： 本发明涉及从一个或多个MR图像推导心肌区域的方法。 左和右心室的轮廓（1，2）是确定性的开采。 厚度或心肌区域的宽度（D）是从在所述图像（图像）的预定部分（A）的论文轮廓之间的距离来计算。 预设区域外的心肌区域的位置导出该距离的基础上。
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公开(公告)号：EP1362329A1
公开(公告)日：2003-11-19
申请号：EP02715675.1
申请日：2002-01-31
IPC分类号： G06T17/00
CPC分类号： G06T17/00
摘要： The invention relates to the processing of a series of images. A multi-dimensional data set is formed from the series of images, for example, by stacking the images in order of succession. A cut plane is taken through the stack, that is, in the direction of succession and a slice through the stack is taken along the cut plane. A region of interest is derived from the slice. The invention is particularly useful for cardiology where a stack of successive MR images of a moving heart is formed. The ventricles of the heart are accurately segmented while using the slice in the direction of the time axis.
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公开(公告)号：EP1644900B1
公开(公告)日：2011-10-19
申请号：EP04744438.5
申请日：2004-06-30
发明人： BREEUWER, Marcel
CPC分类号： A61B5/055
摘要： A computer-readable medium, a device and a method for the quantitative assess,emt pf cardiac perfusion. A myocardium depicted on a series of cardiac images is divided into im age segments, wherein the image segment comprises at least one image pixel. Then a cardiac perfusion parameter is determined for each of said image segments. Then at least one image segment with a normal perfusion parameter value is selected. Subsequently cardiac perfusion parameters of the remaining image segments are based on said normal perfusion parameter value of said image segment with normal perfusion. According to an embodiment, the perfusion parameter is a maximum upslope of a time-intensity profile for distribution of a contrast agent in said myocardium. A normal maximum upslope is derived for at least one image segment and a relative maximum upslope is calculated for each segment with relation to the normal maximum upslope. Based on these values, a ratio of myocardial perfusion parameters derived at stress and myocardial perfusion parameters derived at rest for each segment may be calculated. For example a myocardial perfusion reserve index (MPRI) is calculated for each image segment as a ratio of the relative maximum upslopes derived at rest and at stress .
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