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1. 发明申请

WO2004019782A1 METHOD AND ARRANGEMENT FOR MEDICAL X-RAY IMAGING AND RECONSTRUCTION FROM SPARSE DATA 审中-公开
标题翻译：用于医学X射线成像和稀释数据重建的方法和装置
公开(公告)号：WO2004019782A1
公开(公告)日：2004-03-11
申请号：PCT/FI2003/000625
申请日：2003-08-27
申请人： INSTRUMENTARIUM CORPORATION , SILTANEN, Samuli , SOMERSALO, Erkki , KOLEHMAINEN, Ville , LASSAS, Matti , KAIPIO, Jari
发明人： SILTANEN, Samuli , SOMERSALO, Erkki , KOLEHMAINEN, Ville , LASSAS, Matti , KAIPIO, Jari
IPC分类号： A61B6/03
CPC分类号： G06T11/006 , A61B6/032 , G06T2211/424 , G06T2211/436 , Y10S378/901
摘要： The invention relates to a medical X-ray device 5 arrangement for producing three-dimensional information of an object 4 in a medical X-ray imaging medical X-ray device arrangement comprising an X-ray source 2 for X-radiating the object from different directions and a detector 6 for detecting the X-radiation to form projection data of the object 4. The medical X-ray device 5 arrangement comprises:-means 15 for modelling the object 4 mathematically independently of X-ray imaging -and means 15 for utilizing said projection data and said mathematical modelling of the object in Bayesian inversion based on Bayes' formula (I) to produce three-dimensional information of the object, the prior distribution ppr(x) representing mathematical modelling of the object, the object image vector x, which comprise values of the X-ray attenuation coefficient inside the object, m representing projection data, the likelihood distribution p(m|x) representing the X-radiation attenuation model between the object image vector x and projection data m, p(m) being a normalization constant and the posteriori distribution p(x|m) representing the three-dimensional information of the object 4.
摘要翻译：本发明涉及一种用于在医疗X射线成像医用X射线装置装置中产生物体4的三维信息的医疗X射线装置5装置，其包括用于从不同的X射线对X射线的X射线源2 方向和用于检测X射线以形成对象4的投影数据的检测器6.医用X射线装置5的装置包括： - 用于对数学地独立于X射线成像的物体4建模的装置15以及用于基于贝叶斯公式（I）利用贝叶斯反演中的所述投影数据和所述对象的数学建模来产生对象的三维信息，表示对象的数学建模的先验分布ppr（x），对象图像矢量 x，其包括对象内的X射线衰减系数的值，m表示投影数据，表示对象之间的X辐射衰减模型的似然分布p（m || x） ect图像矢量x和投影数据m，p（m）是归一化常数，并且表示对象4的三维信息的后验分布p（x || m）。

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