公开(公告)号：US20230230297A1

公开(公告)日：2023-07-20

申请号：US18011052

申请日：2021-06-16

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Andreas Georg GOEDICKE ,  Andre Frank SALOMON ,  Michael GRASS ,  Piotr Jan MANIAWSKI ,  Matthias BERTRAM

IPC: G06T11/00

CPC classification number: G06T11/003 ,  G06T2210/41 ,  G06T2211/424

Abstract: Data processing systems (DPS) and related methods for nuclear medicine imaging. At an input interface (IN), first projection data (λ), or a first image (V) reconstructable from the first projection data, is received. The first projection data is associated with a first waiting period (ΔT*). The first waiting period indicates the time period from administration of a tracer agent to a start of acquisition by a nuclear medicine imaging apparatus (IA) of the projection date. A trained machine learning module (MLM) estimates, based on the first projection data (λ) or on the first image (V), a second projection data (λ′) or a second image (V′) associable with a second waiting period (ΔT), longer than the first waiting period (ΔT*). Nuclear imaging can thus be conducted quicker. Similar machine learning based data processing systems and related methods are also envisaged to reduce acquisition time periods or the time it takes to reconstruct imagery.

公开(公告)号：US20160005194A1

公开(公告)日：2016-01-07

申请号：US14856713

申请日：2015-09-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Colas SCHRETTER ,  Matthias BERTRAM ,  Christoph NEUKIRCHEN

IPC: G06T11/00 ,  G06T7/20 ,  G06T5/20 ,  A61B6/03 ,  A61B6/00

CPC classification number: G06T11/005 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/4233 ,  A61B6/4452 ,  A61B6/488 ,  A61B6/5217 ,  A61B6/542 ,  A61B6/587 ,  G06T5/20 ,  G06T7/20 ,  G06T2207/10116 ,  G06T2207/20032 ,  G06T2211/40 ,  G06T2211/412

Abstract: A method and apparatus are provided to improve large field of view CT image acquisition by using at least two scanning procedures: (i) one with the radiation source and detector centered and (ii) one in an offset configuration. The imaging data obtained from both of the scanning procedures is used in the reconstruction of the image. In addition, a method and apparatus are provided for detecting motion in a reconstructed image by generating a motion map that is indicative of the regions of the reconstructed image that are affected by motion artifacts. Optionally, the motion map may be used for motion estimation and/or motion compensation to prevent or diminish motion artifacts in the resulting reconstructed image. An optional method for generating a refined motion map is also provided.

Abstract translation: 提供了一种通过使用至少两个扫描程序来改善大视野CT图像获取的方法和装置：（i）一个具有辐射源和检测器的中心，以及（ii）一个偏移配置。 从扫描过程中获得的成像数据用于重建图像。 此外，提供了一种方法和装置，用于通过产生指示受运动伪像影响的重建图像的区域的运动图来检测重建图像中的运动。 可选地，运动图可以用于运动估计和/或运动补偿以防止或减少所得到的重建图像中的运动伪像。 还提供了用于生成精细运动图的可选方法。