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1. 发明授权

US11490867B2 Fractional flow reserve determination 有权
公开(公告)号：US11490867B2
公开(公告)日：2022-11-08
申请号：US16922069
申请日：2020-07-07
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Hanno Heyke Homann , Michael Grass , Raoul Florent , Holger Schmitt , Odile Bonnefous , Hannes Nickisch
IPC分类号： A61B6/00 , G06T7/00 , G06T7/254 , G16H30/40 , G16H50/50 , A61M5/00 , A61B6/03 , A61B5/026
摘要： The present invention relates to a device (1) for fractional flow reserve determination. The device (1) comprises a model generator (10) configured to generate a three-dimensional model (3DM) of a portion of an imaged vascular vessel tree (VVT) surrounding a stenosed vessel segment (SVS), based on a partial segmentation of the imaged vascular vessel tree (VVT). Further, the device comprises an image processor (20) configured to calculate a blood flow (Q) through the stenosed vessel segment (SVS) based on an analysis of a time-series of X-ray images of the vascular vessel tree (VVT). Still further, the device comprises a fractional-flow-reserve determiner (30) configured to determine a fractional flow reserve (FFR) based on the three-dimensional model (3DM) and the calculated blood flow.

2. 发明授权

US10251594B2 Vertebral feature identification 有权
公开(公告)号：US10251594B2
公开(公告)日：2019-04-09
申请号：US15543466
申请日：2016-01-07
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Tobias Klinder , Eberhard Sebastian Hansis , Michael Grass , Dirk Schaefer , Hanno Heyke Homann , Christian Haase
IPC分类号： A61B5/00 , A61B6/00 , G06K9/00 , G06T7/00 , G06T19/00 , A61B6/03 , A61B6/04 , A61B5/055
摘要： 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.

3. 发明授权

US11141123B2 Fractional flow reserve determination 有权
公开(公告)号：US11141123B2
公开(公告)日：2021-10-12
申请号：US15532968
申请日：2015-12-01
申请人： Koninklijke Philips N.V.
发明人： Hanno Heyke Homann , Michael Grass , Raoul Florent , Holger Schmitt , Odile Bonnefous , Hannes Nickisch
IPC分类号： A61B6/00 , A61M5/00 , G06T7/00 , G06T7/254 , G16H30/40 , G16H50/50 , A61B6/03 , A61B5/026
摘要： The present invention relates to a device (1) for fractional flow reserve determination. The device (1) comprises a model generator (10) configured to generate a three-dimensional model (3DM) of a portion of an imaged vascular vessel tree (VVT) surrounding a stenosed vessel segment (SVS), based on a partial segmentation of the imaged vascular vessel tree (VVT). Further, the device comprises an image processor (20) configured to calculate a blood flow (Q) through the stenosed vessel segment (SVS) based on an analysis of a time-series of X-ray images of the vascular vessel tree (VVT). Still further, the device comprises a fractional-flow-reserve determiner (30) configured to determine a fractional flow reserve (FFR) based on the three-dimensional model (3DM) and the calculated blood flow.

4. 发明授权

US10932740B2 Optimization of X-ray imaging during mammographic examination 有权
公开(公告)号：US10932740B2
公开(公告)日：2021-03-02
申请号：US15028736
申请日：2014-10-21
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Hanno Heyke Homann
IPC分类号： A61B6/00 , A61B5/00
摘要： A method for optimizing an X-ray imaging system during a mammographic examination. In order to provide an optimization of the X-ray imaging a breast is compressed between a support plate and a compression plate. A force-height curve is then acquired during the compression. An elasticity value of the breast is determined based on the force-height curve. A parameter of the X-ray imaging system is optimized based on the determined elasticity value.

5. 发明申请

US20150170358A1 IMAGE RECONSTRUCTION IN INTERLEAVED MULTI-ENERGY IMAGING 有权
标题翻译：交互式多能量成像中的图像重构
公开(公告)号：US20150170358A1
公开(公告)日：2015-06-18
申请号：US14407971
申请日：2013-06-13
申请人： KONINKLIJKE PHILIPS N.V. , PHILIPS DEUTSCHLAND GMBH
发明人： Hanno Heyke Homann , Roland Proksa
IPC分类号： G06T7/00 , G06K9/52 , G06K9/62 , G06T5/00
CPC分类号： G06T7/0012 , G06K9/52 , G06K9/6267 , G06T5/001 , G06T11/008 , G06T2211/436
摘要： The present invention discloses a method for reconstructing an image obtained from kVp switched imaging of a body by acquiring a plurality of images at a first kVp defining a first image scan and a plurality of images at a second kVp defining a second image scan, wherein the plurality of images at the first kVp are acquired interleaved with the plurality of images of the second image scan and by reconstructing an image from the first and second image scan, comprising determining at least one gradient location for at least two images in the first and second image scans, determining divergent gradient locations in respect of a same part of the body for said at least two images in the first and second image scans, tagging each divergent gradient location as an under sampling artifact, generating the reconstructed image from the at least two images in the first and second image scans by correcting for each tagged under sampling artifact. The invention further discloses an imaging system for imaging at least a part of a body by means of a first image scan and a second image scan and a computer program product.
摘要翻译：本发明公开了一种用于通过以限定第一图像扫描的第一kVp和在限定第二图像扫描的第二kVp处的多个图像获取多个图像来重建从主体的kVp切换成像获得的图像的方法，其中，获取与第一图像扫描的多个图像交错的第一kVp处的多个图像，并且通过重建来自第一和第二图像扫描的图像，包括确定第一和第二图像中的至少两个图像的至少一个梯度位置图像扫描，确定在第一和第二图像扫描中所述至少两个图像相对于身体的相同部分的发散梯度位置，将每个发散梯度位置标记为欠采样伪影，从至少两个图像生成重建图像通过校正每个被标记的采样伪像，在第一和第二图像扫描中的图像。本发明还公开了一种用于通过第一图像扫描和第二图像扫描以及计算机程序产品对身体的至少一部分进行成像的成像系统。

6. 发明授权

US10448911B2 Method and device for displaying medical images 有权
公开(公告)号：US10448911B2
公开(公告)日：2019-10-22
申请号：US15030450
申请日：2014-10-30
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Klaus Erhard , Hanno Heyke Homann , Jonas Rikard Rehn
IPC分类号： A61B6/00 , A61B6/02 , G06T11/00
摘要： Medical images are acquired in a tomosynthesis process. Processed 3D volume data representing a target acquired from scanning may be viewed from a set of forward projection directions, in which one or more forward projections through the processed 3D volume data is oblique relative to a central acquisition direction of the scanning process. The first set of forward projections is then displayed as a set of synthetic mammograms. Therefore, a medical practitioner can more easily identify abnormalities within a target volume, because the relative displacement of abnormalities at different depths in the target volume will change at different rates dependent on the viewing angle as the viewing position is moved around the target.

7. 发明授权

US09836872B2 Methods for generation of edge=preserving synthetic mammograms from tomosynthesis data 有权
公开(公告)号：US09836872B2
公开(公告)日：2017-12-05
申请号：US14896811
申请日：2014-06-26
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Klaus Erhard , Hanno Heyke Homann , Jonas Rikard Rehn
IPC分类号： G06T15/08 , G06T15/20 , A61B6/00 , A61B6/02
CPC分类号： G06T15/08 , A61B6/025 , A61B6/502 , G06T15/205 , G06T2210/41
摘要： A method and related apparatus (VS) for synthetic projection images, in particular synthetic 2D mammograms (S) formed from a 3D image volume T made up of slices (SL). It is proposed to compute a forward projection (FP) using a weighted average function that is implemented by a filter (FL). The filter function (FL) is configured such that that voxels in a slice with maximum sharpness are assigned highest weights thereby avoiding blurring by averaging with structurally less relevant slices.

8. 发明授权

US09750466B2 Device and method for tomosynthesis imaging 有权
公开(公告)号：US09750466B2
公开(公告)日：2017-09-05
申请号：US15112727
申请日：2015-04-16
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Hanno Heyke Homann , Frank Bergner , Klaus Erhard , Henning Per Johan Berglund
IPC分类号： A61B6/00 , A61B6/02 , A61B6/04 , A61B5/00 , G06T11/00
CPC分类号： A61B6/025 , A61B5/0064 , A61B6/0414 , A61B6/4042 , A61B6/4241 , A61B6/481 , A61B6/482 , A61B6/502 , A61B6/5205 , A61B6/5247 , A61B6/5258 , G06T11/005 , G06T2211/436
摘要： The present invention relates to a device for tomosynthesis imaging, the device comprising: a mask generator module (101) configured to generate a binary mask based on a geometric three-dimensional model of a scanned object; an image capturing module (102) configured to scan a series of two-dimensional projection images of the object; and an image processing module (103) configured to apply the generated binary mask during a reconstruction of a three-dimensional image volume from the scanned series of two-dimensional projection images and to restrict an extent of the reconstructed image volume to the extent of the geometric model.

9. 发明授权

US10552958B2 Fractional flow reserve determination 有权
公开(公告)号：US10552958B2
公开(公告)日：2020-02-04
申请号：US15570620
申请日：2016-04-26
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Eberhard Sebastian Hansis , Holger Schmitt , Michael Grass , Dirk Schaefer , Hanno Heyke Homann , Tobias Klinder , Christian Haase
IPC分类号： G06K9/00 , G06T7/00 , G06T17/20 , A61B5/0215 , A61B5/026 , A61B5/00 , A61B6/03 , A61B6/00 , G06T7/60
摘要： The present invention relates to a device (1) for fractional flow reserve determination, the device (1) comprising: a model source (10) configured to provide a first three-dimensional model (3DM1) of a portion of an imaged vascular vessel tree (VVT) surrounding a stenosed vessel segment (SVS) and configured to provide a second three-dimensional model (3DM2) of a pressure wire insertable into the vascular vessel tree (VVT); and a processor (20) configured to calculate a first blood flow (Q1) through the stenosed vessel segment (SVS) with the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the first and the second three-dimensional model and to calculate a second blood flow (Q2) through the stenosed vessel segment (SVS) without the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the first three-dimensional model (3DM1) and to determine a first fractional flow reserve value (FFR1) to be measured with the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the first blood flow (Q1) and to determine a second fractional flow reserve value (FFR2) to be measured without the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the second blood flow (Q1).

10. 发明授权

US10114090B2 RF amplifier control in parallel RF transmission based on power requirements 有权
公开(公告)号：US10114090B2
公开(公告)日：2018-10-30
申请号：US14434047
申请日：2013-10-01
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Ulrich Katscher , Hanno Heyke Homann , Peter Boernert
IPC分类号： G01V3/00 , G01R33/48 , G01R33/36 , G01R33/483 , G01R33/561 , G01R33/565 , H03F3/19 , G01R33/58
摘要： A magnetic resonance imaging system acquires magnetic resonance data from a target volume in a subject. The magnetic resonance imaging system includes multiple excitation sources for generating a slice-selective or slab-selective spatial radio frequency (RF) excitation magnetic field targeting slice/slab spatial variations in the target volume, and a controller coupled to the excitation sources. The controller is adapted for: determining a power level required by the excitation sources for generating the slice-selective/or slab-selective spatial RF excitation magnetic field, decomposing the slice-selective or slab-selective spatial RF excitation magnetic field into respective RF excitation constituents of the excitation sources, controlling each of the excitation sources to simultaneously generate the respective RF excitation constituent, using the determined power level for acquiring the magnetic resonance data.

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