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1. 发明授权

US10820872B2 X-ray controlled contrast agent injection 有权
公开(公告)号：US10820872B2
公开(公告)日：2020-11-03
申请号：US14650055
申请日：2013-12-13
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Fred Simon Berend Van Nijnatten
IPC分类号： A61B5/11 , A61B6/00 , A61M5/00 , A61M5/142 , A61B5/0275
摘要： An imaging system including a closed-loop controller (FC) for automatically adapting a power injector system (PJ). The power injector (PJ) injects contrast agent into an object (V) and the imager (100) acquires one or more images (AN, AN i) of the object (V) with the contrast agent resident therein. The controller (FC) calculates a desired optimal injection rate from the images (AN, ANi). Controller (FC) then controls the injector (PJ) according to the calculated optimal injection rate.

2. 发明授权

US11123025B2 Iso-centering in C-arm computer tomography 有权
公开(公告)号：US11123025B2
公开(公告)日：2021-09-21
申请号：US16483899
申请日：2018-01-29
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Daniel Simon Anna Ruijters , Fred Simon Berend Van Nijnatten , Javier Olivan Bescos , Ronaldus Petrus Johannes Hermans , Adrie Baselmans , Ina Klein Teeselink , Jeroen Gerard Scheepens , Walter Everard Carels , Thijs Grunhagen
IPC分类号： A61B6/08 , A61B6/03 , A61B6/00 , A61B6/04
摘要： An apparatus for medical imaging of a patient, including an object of interest, is provided. The apparatus comprises a patient support unit, a processor, and a display. The patient support unit is configured to receive a patient. The processor is configured to receive scout images of the patient acquired in respective positions of the apparatus. Each respective position is represented by a position parameter. The processor is further configured to select at least one iso-centering image from the scout images by geometrical calculation using the position parameter of each scout image and a position parameter representing a present position of the apparatus. The processor is further configured to adapt the appearance of the at least one iso-centering image according to the present position of the apparatus. The display is configured to present the at least one adapted iso-centering image.

3. 发明申请

US20160278725A1 X-RAY CONTROLLED CONTRACT AGENT INJECTION 审中-公开
标题翻译： X射线控制合同代理注射
公开(公告)号：US20160278725A1
公开(公告)日：2016-09-29
申请号：US14650055
申请日：2013-12-13
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Fred Simon Berend Van Nijnatten
IPC分类号： A61B6/00 , A61M5/00 , A61B5/0275
摘要： An imaging system including a closed-loop controller (FC) for automatically adapting a power injector system (PJ). The power injector (PJ) injects contrast agent into an object (V) and the imager (100) acquires one or more images (AN, AN i) of the object (V) with the contrast agent resident therein. The controller (FC) calculates a desired optimal injection rate from the images (AN, ANi). Controller (FC) then controls the injector (PJ) according to the calculated optimal injection rate.
摘要翻译：一种成像系统，包括用于自动适应动力注射器系统（PJ）的闭环控制器（FC）。动力注射器（PJ）将造影剂注射到物体（V）中，并且成像器（100）获取其中驻留有造影剂的物体（V）的一个或多个图像（AN，AN i）。控制器（FC）从图像（AN，ANi）计算所需的最佳注入速率。控制器（FC）然后根据计算的最佳注射速率控制喷射器（PJ）。

4. 发明授权

US12042327B2 Static gain calibration 有权
公开(公告)号：US12042327B2
公开(公告)日：2024-07-23
申请号：US17601784
申请日：2020-04-10
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Petrus Johannes Withagen , Erik Hummel , Fred Simon Berend Van Nijnatten , Joost Adrianus Van Rooijen , Peter George Van De Haar
IPC分类号： A61B6/58 , A61B6/00 , A61B6/03 , A61B6/40
CPC分类号： A61B6/585 , A61B6/032 , A61B6/4085 , A61B6/4441
摘要： An X-ray system comprises an assembly that is moveable to different scan coordinates to acquire X-ray projection images at the different scan coordinates in a dynamic mode while the assembly is moving. The assembly is also moveable to a predetermined reference coordinate to acquire an X-ray projection image at the predetermined reference coordinate in a static mode while the assembly is resting. The X-ray system also comprises a processor configured to obtain dynamic gain calibration parameters from the X-ray projection images acquired in the dynamic mode at one of the different scan coordinates; obtain a static gain calibration parameter from the X-ray projection image acquired in the static mode at the predetermined reference coordinate; and determine adjusted dynamic gain calibration parameters.

5. 发明授权

US10089744B2 Vessel segmentation 有权
公开(公告)号：US10089744B2
公开(公告)日：2018-10-02
申请号：US14782210
申请日：2014-04-02
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Jean Stawiaski , Odile Bonnefous , Daniel Simon Anna Ruijters , Fred Simon Berend Van Nijnatten
IPC分类号： G06T7/20 , A61B6/00 , G06T7/11 , G06T7/174 , G06T7/187
摘要： An X-ray image processing device for providing segmentation information with reduced X-ray dose that includes an interface unit, and a data processing unit. The interface unit is configured to provide a sequence of time series angiographic 2D images of a vascular structure obtained after a contrast agent injection. The data processing unit is configured to determine an arrival time index of a predetermined characteristic related to the contrast agent injection for each of a plurality of determined pixels along the time series, and to compute a connectivity index for each of the plurality of the determined pixels based on the arrival time index. The data processing unit is configured to generate and provide segmentation data of the vascular structure from the plurality of the determined pixels, wherein the segmentation data is based on the connectivity index of the pixels.

6. 发明授权

US11864932B2 X-ray imaging systems for reducing artefacts associated with anti-scatter grids and methods of operating the same 有权
公开(公告)号：US11864932B2
公开(公告)日：2024-01-09
申请号：US17797294
申请日：2021-12-08
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Nishant Singh , Klaus Jürgen Engel , Johannes Wilhelmus Maria Jacobs , Bernd Menser , Lester Donald Miller , Fred Simon Berend Van Nijnatten
IPC分类号： A61B6/03 , A61B6/00
CPC分类号： A61B6/032 , A61B6/4007
摘要： The disclosure relates to an X-ray imaging system for acquiring two-dimensional or three-dimensional images of a subject. A relative position of an X-ray emitting region, as seen in a coordinate system which is stationary relative to an anti-scatter arrangement and/or an X-ray sensitive surface is controlled so that a first and a second image are acquired at different relative positions of the X-ray emitting region relative to the anti-scatter arrangement and/or the X-ray sensitive surface (10). A data processing system of the imaging system generates an output image, based on each of the images. In the output image, artefacts generated by the anti-scatter arrangement, are reduced, suppressed or eliminated compared to the first and the second image.

7. 发明授权

US11331067B2 Device, system and method for controlling a position of an anti-scatter grid in an X-ray image acquisition system 有权
公开(公告)号：US11331067B2
公开(公告)日：2022-05-17
申请号：US17040701
申请日：2019-03-25
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Petrus Johannes Withagen , Erik Hummel , Peter George Van De Haar , Fred Simon Berend Van Nijnatten , Joost Adrianus Van Rooijen
IPC分类号： A61B6/00
摘要： The present invention relates to a device for controlling a position of an anti-scatter grid in an X-ray image acquisition system, the device (10) comprising: a measurement unit (12); a control unit (14); and a shifting unit (16); wherein the measurement unit (12) is configured to determine an X-ray beam focus position (37) of an X-ray radiation source of the X-ray image acquisition system with respect to an X-ray detector of the X-ray image acquisition system; wherein the control unit (14) is configured to generate a shifting signal based on a displacement (18) between the X-ray beam focus position (37) and a grid focus position (35) of the anti-scatter grid; and wherein, based on the shifting signal, the shifting unit (16) is configured to shift an anti-scatter grid of the X-ray image acquisition system in at least one direction to align the anti-scatter grid with the X-ray beam focus position (37), provides an improved anti-scatter grid for X-ray acquisition systems. The invention provides the use of an improved anti-scatter grid (26) for X-ray acquisition systems (20).

8. 发明授权

US11266359B2 Device and method for determining a volume of projection of a dual-axis computed tomography system 有权
公开(公告)号：US11266359B2
公开(公告)日：2022-03-08
申请号：US16650066
申请日：2018-09-18
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Fred Simon Berend Van Nijnatten
IPC分类号： A61B6/00 , A61B6/03
摘要： The present invention relates to a device for determining a volume of projection of a dual-axis computed tomography system with at least one shutter, the device (1) comprising: an interface unit (2); a projection module (3); and a position determination module (4); wherein the interface unit (2) is configured to receive a volume of interest (44) for a computed tomography image showing an object (22); wherein the projection module (3) is configured to determine a volume of projection (41, 42, 46) of a detector (16) based on different simulated positions of the detector (16) on a trajectory around the object (22) and based on a variable simulated position of at least one shutter (15); and wherein the position determination module (4) is configured to determine the simulated position of the at least one shutter (15) for each determined simulated position of the detector (16) such that the volume of projection (41, 42, 46) corresponds to the volume of interest (44). The present invention avoids that parts of an object of interest are unintentionally not imaged in dual-axis computed tomography imaging whilst reducing x-ray absorption to parts of the object outside the volume of interest (44) and provides improved insight in the volume of projection (41, 42, 46) of a dual-axis trajectory acquisition.

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