公开(公告)号：US08000433B2

公开(公告)日：2011-08-16

申请号：US10667475

申请日：2003-09-23

申请人： Herbert Bruder ,  Thomas Flohr ,  Annabella Rauscher ,  Karl Schwarz ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Annabella Rauscher ,  Karl Schwarz ,  Karl Stierstorfer

IPC分类号： A61B6/03

CPC分类号： G06T11/005 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085

摘要： A method is for image reconstruction for computed tomography with a non-one-dimensional, extended detector. The rays of the detector are weighted during the backprojection as a function of their position in the beam.

摘要翻译： 一种用于使用非一维扩展检测器进行计算机断层扫描的图像重建的方法。 在反投影期间，将检测器的光线作为其在光束中的位置的函数进行加权。

公开(公告)号：US07058157B2

公开(公告)日：2006-06-06

申请号：US10834271

申请日：2004-04-29

申请人： Annabella Rauscher ,  Karl Stierstorfer

发明人： Annabella Rauscher ,  Karl Stierstorfer

IPC分类号： A61B6/00

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/4085 ,  A61B6/542 ,  G06T11/005 ,  Y10S378/901

摘要： A weighted method is for producing images with the aid of a spiral computed tomography unit. Further, in a CT unit, the detector and beam are tuned to one another in such a way that a drop in dose rate occurs at the edges within the detector. The form of the weighting function corresponds at least approximately to the dose rate characteristic and/or to the characteristic of the signal quality of the detector.

摘要翻译： 加权方法是借助于螺旋计算机断层摄影单元来产生图像。 此外，在CT单元中，检测器和光束彼此相互调节，使得剂量率的下降发生在检测器内的边缘处。 加权函数的形式至少近似于剂量率特性和/或检测器的信号质量的特性。

公开(公告)号：US07477929B2

公开(公告)日：2009-01-13

申请号：US11352227

申请日：2006-02-13

申请人： Ernst Klotz ,  Annabella Rauscher

发明人： Ernst Klotz ,  Annabella Rauscher

IPC分类号： A61B6/00 ,  A61B5/05

CPC分类号： A61B6/504 ,  A61B6/481

摘要： A method is disclosed for forecasting the contrast medium flow in a living body, in particular in a patient, in which a defined test bolus with a contrast medium is injected, preferably intravenously and with a known injection flow profile, into the body, preferably into a blood vessel. The time concentration profile of the contrast medium is observed and determined over a limited time period with a number of measuring instants at at least one location in the body with the aid of a tomographic method. The time profile of the contrast medium concentration of another contrast medium dose is forecast with the aid of a linear cause/effect formulation from the measured data obtained via the distribution of the contrast medium. The following calculation formula is then used for forecasting the time concentration profile {tilde over (c)}R(t) of the contrast medium at at least one of the previously measured locations of the body: c ~ R ⁡ ( t ) = 1 F T ⁢ ∑ n = na n = ne ⁢ ∫ x = xa x = xe ⁢ ⅆ t ′ ⁢ c ~ R ⁡ ( t + t 0 ⁢ T - n ⁢ ⁢ Δ T - t ′ ) ⁢ b R ′ ⁡ ( t ′ ) .

公开(公告)号：US20060239917A1

公开(公告)日：2006-10-26

申请号：US11352227

申请日：2006-02-13

申请人： Ernst Klotz ,  Annabella Rauscher

发明人： Ernst Klotz ,  Annabella Rauscher

IPC分类号： A61B5/055

CPC分类号： A61B6/504 ,  A61B6/481

摘要： A method is disclosed for forecasting the contrast medium flow in a living body, in particular in a patient, in which a defined test bolus with a contrast medium is injected, preferably intravenously and with a known injection flow profile, into the body, preferably into a blood vessel. The time concentration profile of the contrast medium is observed and determined over a limited time period with a number of measuring instants at at least one location in the body with the aid of a tomographic method. The time profile of the contrast medium concentration of another contrast medium dose is forecast with the aid of a linear cause/effect formulation from the measured data obtained via the distribution of the contrast medium. The following calculation formula is then used for forecasting the time concentration profile {tilde over (c)}R(t) of the contrast medium at at least one of the previously measured locations of the body: c ~ R ⁡ ( t ) = 1 F T ⁢ ∑ n = na n = ne ⁢ ∫ x = xa x = xe ⁢ ⅆ t ′ ⁢ c ~ R ⁡ ( t + t 0 ⁢ T - n ⁢   ⁢ Δ T - t ′ ) ⁢ b R ′ ⁡ ( t ′ ) .