公开(公告)号：DE10160205A1

公开(公告)日：2003-06-18

申请号：DE10160205

申请日：2001-12-07

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： KOEHLER THOMAS ,  GRAS MICHAEL ,  RASCHE VOLKER

IPC: A61B6/00 ,  A61B6/03 ,  G06T1/00 ,  G06T15/00

Abstract: Method for reconstruction of a 3D image data set of an examination area (13) examined using a radiation source (S) and a detector unit (16). The time interval between image recordings is shorter than that of the regular movement cycle of the object. Rotation of the source about a rotation axis (14) is controlled so that over n time intervals it covers an angle greater then 180 deg plus the cone angle ( beta ). Translation of the radiation source is such that its cone beam passes completely through the examination area at every point of the n time intervals. An Independent claim is made for a device for reconstruction of a 3D image data set of an examination area.

公开(公告)号：DE10252662A1

公开(公告)日：2004-05-27

申请号：DE10252662

申请日：2002-11-11

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： SCHLOMKA JENS PETER ,  GRAS MICHAEL

IPC: A61B6/03 ,  G06T11/00

Abstract: A medical computer tomography procedure illuminates an investigation region (13) through an aperture (31) by a beam (41) from a source (S) rotating (14) around the object with image reconstruction using linear and shaft angle, curved beam back projection of the detected (16) signal with square law distance and cosine beam angle weighting before one dimensional filtering and rebinning. Includes Independent claims for a computer tomograph and computer programs using the procedure.

公开(公告)号：DE10204926A1

公开(公告)日：2003-08-21

申请号：DE10204926

申请日：2002-02-07

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： GRAS MICHAEL ,  KOEHLER THOMAS

IPC: A61B6/03 ,  G06T3/60

Abstract: The invention relates to a computed tomography method in which an examination zone is irradiated from two mutually offset, preferably circular trajectories. In an intermediate region the absorption distribution is reconstructed by means of measuring values from both trajectories, the weight with which the measuring values are used being larger as the distance between the voxel to be reconstructed and the relevant trajectory is smaller.

公开(公告)号：WO2007072281A8

公开(公告)日：2008-08-28

申请号：PCT/IB2006054702

申请日：2006-12-08

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  GRAS MICHAEL ,  VON BERG JENS ,  LORENZ CRISTIAN

Inventor： GRAS MICHAEL ,  VON BERG JENS ,  LORENZ CRISTIAN

IPC: A61B6/03 ,  A61B6/00

CPC classification number: A61B6/032 ,  A61B5/7289 ,  A61B6/4085 ,  A61B6/503 ,  G06T11/005 ,  G06T2211/412

Abstract: A reconstruction unit is provided for receiving a sequence of data sets, the data sets representing structural information of the object. The reconstruction unit performs receiving scheduling information related to the data sets of the sequence of data sets. Then reconstructing a sequence of coarse reconstructions of the object by using the sequence of data sets and the scheduling information. Afterwards a sequence of adapted models of the object is generated by adapting a respective model to each of the coarse reconstructions. Then a motion of a predetermined portion of each of the adapted models is determined and a specific data set of the sequence of data sets is selected, wherein the specific data set corresponds to the adapted model with the minimum motion of the predetermined portion. Finally the reconstruction unit performs reconstructing a fine reconstruction of at least the part of the object using the specific data set.

Abstract translation: 提供了重建单元，用于接收数据集的序列，所述数据集表示对象的结构信息。 重建单元执行与数据集序列的数据集相关的接收调度信息。 然后通过使用数据集序列和调度信息重构对象的粗略重构序列。 之后，通过将相应的模型适配到每个粗略重建来产生对象的适应模型序列。 然后，确定每个适配模型的预定部分的运动，并且选择数据集序列的特定数据集，其中特定数据集对应于具有预定部分的最小运动的适应模型。 最后，重建单元使用特定的数据集来重构至少部分对象的精细重构。

公开(公告)号：WO2007072281A2

公开(公告)日：2007-06-28

申请号：PCT/IB2006054702

申请日：2006-12-08

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  GRAS MICHAEL ,  VON BERG JENS

Inventor： GRAS MICHAEL ,  VON BERG JENS

IPC: A61B6/03 ,  A61B6/00

CPC classification number: A61B6/032 ,  A61B5/7289 ,  A61B6/4085 ,  A61B6/503 ,  G06T11/005 ,  G06T2211/412

Abstract: A reconstruction unit is provided for receiving a sequence of data sets, the data sets representing structural information of the object. The reconstruction unit performs receiving scheduling information related to the data sets of the sequence of data sets. Then reconstructing a sequence of coarse reconstructions of the object by using the sequence of data sets and the scheduling information. Afterwards a sequence of adapted models of the object is generated by adapting a respective model to each of the coarse reconstructions. Then a motion of a predetermined portion of each of the adapted models is determined and a specific data set of the sequence of data sets is selected, wherein the specific data set corresponds to the adapted model with the minimum motion of the predetermined portion. Finally the reconstruction unit performs reconstructing a fine reconstruction of at least the part of the object using the specific data set.

Abstract translation: 提供重建单元，用于接收数据集的序列，所述数据集表示对象的结构信息。 重建单元执行与数据集序列的数据集相关的接收调度信息。 然后通过使用数据集序列和调度信息重建对象的粗略重构序列。 之后，通过将相应的模型适配到每个粗略重建来产生对象的适应模型序列。 然后，确定每个适配模型的预定部分的运动，并且选择数据集序列的特定数据集，其中特定数据集对应于具有预定部分的最小运动的适应模型。 最后，重建单元使用特定数据集来重构至少部分对象的精细重建。