公开(公告)号：US20170209108A1

公开(公告)日：2017-07-27

申请号：US15310933

申请日：2015-10-01

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Michael GRASS ,  Dirk SCHAFER ,  Thomas KOEHLER

IPC: A61B6/00

CPC classification number: A61B6/4291 ,  A61B6/484 ,  A61B6/503 ,  A61B6/504 ,  A61B6/527

Abstract: The invention relates to a grating device (50) for phase contrast and/or dark-field imaging of a movable object (34), an interferometer unit (20), a phase contrast and/or dark-field imaging system (10), a phase contrast and/or dark-field imaging method, a computer program element for controlling such device and a computer readable medium having stored such computer program element. The grating device (50) comprises a grating unit (51), an actuation unit (52), a motion detecting unit (53), and a control unit (54). The actuation unit (52) is configured to position the grating unit (51) in different sampling positions relative to the moveable object (34). The motion detecting unit (53) is configured to detect a motion of the movable object (34). The detected motion of the moveable object (34) may be a repetitive motion. The control unit (54) is configured to control the actuation unit (52) to position the grating unit (51) in the different sampling positions based on the detected motion of the movable object (34).

公开(公告)号：US20180035960A1

公开(公告)日：2018-02-08

申请号：US15551925

申请日：2015-12-04

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christian HAASE ,  Dirk SCHAFER ,  Eberhard Sebastian HANSIS ,  Tobias KLINDER ,  Michael GRASS ,  Ming De LIN

IPC: A61B6/00 ,  A61K49/04 ,  G06F19/00 ,  A61B6/03

CPC classification number: A61B6/481 ,  A61B6/032 ,  A61B6/405 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/504 ,  A61K49/0419 ,  A61M5/00 ,  G06F19/3468

Abstract: The present invention is directed towards a system and method for transarterial chemoembolization using differently sized drug-eluting microsphere beads filled with drugs and determining a delivered drug concentration using an imaging system.

公开(公告)号：US20160163072A1

公开(公告)日：2016-06-09

申请号：US14907084

申请日：2014-07-23

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Thomas KOEHLER ,  Ewald ROESSL ,  Dirk SCHAFER

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

CPC classification number: G06T11/005 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4241 ,  A61B6/4291 ,  A61B6/461 ,  A61B6/467 ,  A61B6/484 ,  A61B6/5205 ,  A61B6/5235 ,  G01N23/046 ,  G01N23/20075 ,  G01N2223/045 ,  G01N2223/423 ,  G06T2207/10081 ,  G06T2207/10124 ,  G06T2207/30008 ,  G21K2207/005

Abstract: The present invention relates to a method and apparatus for X-ray phase contrast imaging. The method comprises the following steps: from the measured phase gradient and overall attenuation information, an electron density is computed; the contribution pC of the Compton scattering to the overall attenuation is estimated from the electron density; the contribution pp of the photo-electric absorption to the overall attenuation is estimated from the overall attenuation and the contribution pC; the values pC and pp are used to reconstruct a Compton image and a photo-electric image; by linear combination of these two images, a monochromatic image at a desired energy is obtained.

Abstract translation: 本发明涉及一种用于X射线相位成像的方法和装置。 该方法包括以下步骤：从测量的相位梯度和总体衰减信息中，计算电子密度; 根据电子密度估计康普顿散射对整体衰减的贡献pC; 光吸收对整体衰减的贡献pp从总体衰减和贡献pC估计; 值pC和pp用于重建康普顿图像和光电图像; 通过这两个图像的线性组合，获得期望能量的单色图像。

公开(公告)号：US20170273647A1

公开(公告)日：2017-09-28

申请号：US15509042

申请日：2015-09-16

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Dirk SCHAFER ,  Michael GRASS ,  Thomas KOEHLER ,  Roland PROKSA

IPC: A61B6/00 ,  A61B6/03

Abstract: A method includes receiving radiation with a hybrid data detection system of an imaging system. The hybrid data detection system includes a hybrid data detector array with a set of spectral detectors and a set of integrating detectors that are arranged along a transverse axis of an examination region. The method further includes generating a set of truncated spectral projections with the first set of spectral detectors. The method further includes estimating a set of spectral projections for the integrating detectors. The method further includes combining the set of truncated spectral projections and the estimated set of spectral projections. The method further includes estimating a set of spectral projections based on the combined set to produce a complete set of spectral projections. The method further includes processing the complete set of spectral projections to generate volumetric image data.