-
公开(公告)号：US10736590B2
公开(公告)日：2020-08-11
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: A61B6/03 , A61B6/00 , G01N23/046
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.
-
公开(公告)号：US10441230B2
公开(公告)日：2019-10-15
申请号：US15325158
申请日：2015-07-13
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roland Proksa , Michael Grass
IPC: A61B6/00 , A61B6/06 , A61B6/03 , G01N23/046
Abstract: The invention relates to a projection data acquisition apparatus (31) for acquiring projection data. The projection data acquisition apparatus comprises a radiation device (32) for generating a pulsed radiation beam (4) for traversing an object and a detection device (6) for generating projection data being indicative of the pulsed radiation beam (4) at different acquisition positions, wherein the radiation device (32) is adapted to generate the pulsed radiation beam (4) such that at different acquisition positions the pulsed radiation beam (4) has different shapes, i.e. is differently blocked and/or attenuated. Thus, not the complete radiation providable by the radiation device is used at each acquisition position, but at least at some acquisition positions only a smaller pulsed radiation beam is used. This can lead to less scattered radiation and hence to improved projection data and an improved computed tomography image, which may be reconstructed based on the acquired projection data.
-
公开(公告)号：US10420519B2
公开(公告)日：2019-09-24
申请号：US15523690
申请日：2015-11-04
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Thomas Koehler , Roland Proksa , Michael Grass
Abstract: The invention relates to a computed tomography system (30). Several sets of spectral projections, which correspond to different positions of a radiation source (2) along a rotation axis (R), are decomposed into first projections being indicative of a contrast agent and second projections being not indicative of the contrast agent. An image is generated by a) determining for each first projection a contrast value being indicative of a total amount of contrast agent and scaling the first projections such that for different first projections of a same set the same contrast value is determined, and reconstructing an image based on the scaled first projections, and/or b) reconstructing for the different sets first images, scaling the first images such that they have a same intensity in overlap regions and combining the scaled first images. Thus, different contrast agent amounts can be balanced, thereby allowing for an improved image quality.
-
公开(公告)号：US10258303B2
公开(公告)日：2019-04-16
申请号：US15317158
申请日：2015-06-24
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Michael Grass , Yechiel Lamash , Liran Goshen , Holger Schmitt , Mordechay Pinchas Freiman , Hannes Nickisch , Sven Prevrhal
Abstract: The invention relates to an apparatus for determining a fractional flow reserve (FFR) value of the coronary artery system of a living being (3). A fractional flow reserve value determination unit (13) determines the FFR value by using an FFR value determination algorithm that is adapted to determine the FFR value based on a boundary condition and a provided representation of the coronary artery system, wherein the boundary condition is specific for the living being and determined by a boundary condition determination unit (12). Since the boundary condition determination unit determines a boundary condition, which is specific for the living being, and since the fractional flow reserve value determination unit not only uses the provided representation of the coronary artery system, but also the living being specific boundary condition for determining the FFR value, the accuracy of the FFR value, which is non-invasively determined, can be improved.
-
公开(公告)号：US10251594B2
公开(公告)日：2019-04-09
申请号：US15543466
申请日：2016-01-07
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Tobias Klinder , Eberhard Sebastian Hansis , Michael Grass , Dirk Schaefer , Hanno Heyke Homann , Christian Haase
Abstract: Minimally-invasive spinal inventions are often performed using fluoroscopic imaging methods, which can give a real-time impression of the location of a surgical instrument, at the expense of a small field of view. When operating on a spinal column, a small field of view can be a problem, because a medical professional is left with no reference vertebra in the fluoroscopy image, from which to identify a vertebra, which is the subject of the intervention. Identifying contiguous vertebrae is difficult because such contiguous vertebrae are similar in shape. However, characteristic features, which differentiate one vertebra from other vertebra, and which are visible in the fluoroscopic view, may be used to provide a reference.
-
Patent Agency Ranking
公开(公告)号：US10111633B2
公开(公告)日：2018-10-30
申请号：US15101025
申请日：2014-12-04
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Hannes Nickisch , Michael Grass , Holger Schmitt , Jan Timmer
IPC: G06K9/00 , A61B6/00 , A61B5/00 , A61B5/02 , G06T7/00 , G16H50/50 , G06F19/00 , A61B5/026 , A61B6/03
Abstract: A system (IPS) and related method for fractional flow reserve, FFR, simulation. The simulation for a range of FFR values for a vasculature portion is based on a composite transfer function which is combined from a weighted sum of global effect transfer functions he, each representing a distinct physical effect that causes a pressure drop. The weights we are gotten from a previous training phase against pressure pi versus flow rate fi 5 sample measurements associated with respective vasculature geometries. The simulated range of FFR values is visualized in a graphics display (GD) as a function of pressure and flow rate values within respective intervals.
-
公开(公告)号：US10029120B2
公开(公告)日：2018-07-24
申请号：US14383122
申请日：2013-02-26
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Heinrich Schulz , Michael Grass , Joerg Sabczynski , Torbjorn Vik
Abstract: A system for planning radiation treatment therapy is provided. An optical sensor device is implanted within or in close proximity to a risk region within the patient during a radiation delivery. The sensor device optically monitors the orientation of the risk region, and the radiation dosage received by the risk region, during the radiation delivery. That information may be used as appropriate to modify an on-going radiation delivery plan in real time while the plan is being implemented.
-
公开(公告)号：US09867586B2
公开(公告)日：2018-01-16
申请号：US14383127
申请日：2013-03-04
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Cristian Lorenz , Michael Grass , Dirk Schäfer , Bernhard Johannes Brendel
CPC classification number: A61B6/5252 , A61B6/03 , A61B6/4021 , A61B6/4441 , A61B6/5235 , A61B6/5258 , G06T5/00 , G06T7/593 , G06T15/00 , G06T2207/10116 , G06T2207/20172 , G06T2207/30004
Abstract: A double focal spot X-ray tube is used to acquire a set of two images PIα, PIβ for a given gantry position from slightly different view positions. The stereo or binocular disparity (BD) of imaged structures is used to estimate the object depth in view direction, which in turn is used to discriminate between objects inside IO and outside EO the body. Respective structures are virtually removed from the images PIα, PIβ.
-
公开(公告)号：US09867584B2
公开(公告)日：2018-01-16
申请号：US14647860
申请日：2013-11-21
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Michael Grass , Holger Schmitt , Hannes Nickisch
CPC classification number: A61B6/504 , A61B6/032 , A61B6/481 , A61B6/482 , A61B6/503 , A61B6/5205 , A61B6/5217 , A61B6/5288 , A61B90/39 , A61B2090/3966 , G06T7/0012 , G06T2207/10081 , G06T2207/30048 , G06T2207/30104
Abstract: A method of determining the blood flow through coronary arteries comprises generating (S1) a 3D image data set of at least the coronary arteries and the myocardial muscle, generating (S2) a 3D marker data set of at least the myocardial muscle from a dual-energy or spectral 3D data set obtained after administration of a marker, said 3D marker data set indicating the amount of said marker contained within voxels of said myocardial muscle, subdividing (S3) the myocardial muscle into myocardial muscle segments, determining (S4) which coronary artery supplies the respective myocardial muscle segments, determining (S5) the volume of blood that flows into the respective myocardial muscle segments from said 3D marker data set, and determining (S6) the total volume of blood that flows into a coronary artery of interest by summing the volume of blood flowing into all myocardial muscle segments supplied by said coronary artery.
-
公开(公告)号：US20150109196A1
公开(公告)日：2015-04-23
申请号：US14398497
申请日：2013-05-02
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Michael Grass , Robert Manzke , Tobias Klinder , Raymond Chan
IPC: G06F3/01
Abstract: The present invention relates to devices, system and method for detecting gestures. The devices, systems and methods uses optically shape sensing devices for tracking and monitoring users. This allows unhindered, robust tracking of persons in different setting. The devices, systems and methods are especially useful in health care institutions.
Abstract translation: 本发明涉及用于检测手势的装置，系统和方法。 设备，系统和方法使用光学形状感测设备来跟踪和监视用户。 这样可以不受限制地，不间断地追踪人员。 设备，系统和方法在卫生保健机构中特别有用。
-
-
-
-
-
-
-
-
-
Search Results
106
records
(took 0.024 seconds)
