公开(公告)号：US20160206263A1

公开(公告)日：2016-07-21

申请号：US14916592

申请日：2014-09-11

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Heike RUPPERTSHOFEN ,  Cristian LORENZ ,  Jens WIEGERT ,  Peter PRINSEN ,  Roland PROKSA

IPC: A61B6/00 ,  A61B6/03

CPC classification number: A61B6/488 ,  A61B6/032 ,  A61B6/10 ,  A61B6/14 ,  A61B6/5229 ,  A61B6/5235 ,  A61B6/5247 ,  A61B6/542 ,  A61C9/0046 ,  A61C9/0053 ,  A61C9/006 ,  A61C9/0086 ,  A61N5/1031 ,  G06F19/00 ,  G06F19/321 ,  G06T7/174 ,  G06T7/30 ,  G06T19/006 ,  G06T2207/10081 ,  G06T2207/20221 ,  G06T2210/41

Abstract: A method for extending initial image data of a subject for dose estimation includes obtaining first image data of the subject for dose calculation, wherein the first image data has a first field of view. The method further includes obtaining second image data for extending the field of view of the first image data. The second image data has a second field of view that is larger than the first field of view. The method further includes extending the first field of view based on the second image data, producing extended image data.

Abstract translation: 用于扩展用于剂量估计的对象的初始图像数据的方法包括获得用于剂量计算的对象的第一图像数据，其中第一图像数据具有第一视场。 该方法还包括获得用于扩展第一图像数据的视场的第二图像数据。 第二图像数据具有大于第一视场的第二视场。 该方法还包括基于第二图像数据扩展第一视场，产生扩展图像数据。

公开(公告)号：US20180368785A1

公开(公告)日：2018-12-27

申请号：US16062150

申请日：2016-12-16

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Jens WIEGERT ,  Bernd MENSER ,  Peter PRINSEN

IPC: A61B6/03 ,  A61B6/00 ,  G06T7/00

Abstract: Method for estimating radiation dose received by a tissue of interest during an imaging scan comprising: i. obtaining image data of a body region including the tissue of interest, ii. sub-dividing the image data into axial slices, comprising tissue axial slices and non-tissue axial slices, iii. determining a net amount of radiation dose emitted or received by each axial slice by combining scan parameters of each axial slice with pre-calculated amounts of radiation dose, iiii summing the net amounts of radiation dose of all the tissue axial slices to obtain a tissue dose.

公开(公告)号：US20160035086A1

公开(公告)日：2016-02-04

申请号：US14766142

申请日：2014-04-21

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Peter PRINSEN ,  Jens WIEGERT ,  Cristian LORENZ ,  Heike RUPPERTSHOFEN

IPC: G06T7/00 ,  A61B6/00 ,  A61B6/03 ,  G06T11/00 ,  G06T17/00

CPC classification number: G06T7/0012 ,  A61B6/03 ,  A61B6/032 ,  A61B6/5294 ,  A61B6/542 ,  A61N2005/1034 ,  G06T11/003 ,  G06T17/00 ,  G06T2207/10072

Abstract: The invention relates to an apparatus (18) for calculating an x-ray dose distribution within an object for a computed tomography examination. A primary flux determination unit (15) determines firstly a primary flux distribution within the object, wherein then this determined primary flux distribution is used as an initial total flux distribution by a total flux determination unit (16) while applying a six-flux model algorithm. This allows the determination of the total flux distribution to start with a relatively good first approximation of the total flux distribution such that the six-flux model algorithm can determine the total flux distribution very fast. The determined total flux distribution is finally used by a dose distribution determination unit (17) for determining a total dose distribution. The apparatus allows therefore for a very fast determination of x-ray dose distributions for computed tomography examinations.

Abstract translation: 本发明涉及一种用于计算用于计算机断层摄影检查的对象内的x射线剂量分布的装置（18）。 主要通量确定单元（15）首先确定物体内的主要通量分布，其中随后将该确定的主要通量分布用作总通量确定单元（16）的初始总通量分布，同时施加六通量模型算法 。 这允许总通量分布的确定从总通量分布的相对良好的第一近似开始，使得六通量模型算法可以非常快速地确定总通量分布。 确定的总通量分布最终由剂量分布确定单元（17）用于确定总剂量分布。 因此，该装置可以非常快速地确定计算机断层扫描检查的x射线剂量分布。