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公开(公告)号：US20190290222A1
公开(公告)日：2019-09-26
申请号：US16316446
申请日：2017-07-13
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roland PROKSA , Heiner DAERR , Daniela FRANZ
Abstract: A method of an image processing apparatus for identifying a type of adipose body tissue within a subject, based on performing a spectral computed tomography (CT) scan of a region of interest of the subject; and using a combination of different image processing techniques to differentiate between at least two adipose tissue types within the region of interest.
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公开(公告)号：US20180249983A1
公开(公告)日：2018-09-06
申请号：US15758367
申请日：2016-09-22
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Heiner DAERR , Thomas KOEHLER
CPC classification number: A61B6/583 , A61B6/032 , G09B23/286 , G09B23/30
Abstract: The present invention is directed towards spectral imaging, wherein a dedicated spectral imaging phantom is scanned with a spectral x-ray device to obtain spectral imaging data of the spectral imaging phantom. Said imaging data of the spectral imaging phantom is used as input for obtaining improved further imaging data of a subject of which a spectral scan is performed subsequent to or simultaneous with the spectral scan of the spectral imaging phantom. Improved further imaging data may be obtained by using the spectral phantom imaging data as input for imaging data correction, for providing a recommendation and/or for further data processing.
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公开(公告)号：US20200253548A1
公开(公告)日：2020-08-13
申请号：US16761194
申请日：2018-10-31
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Heiner DAERR , Arne EWALD
Abstract: Presented are concepts for m classifying a disease or disability of a subject. One such concept comprises obtaining interaction data associated with a subject, the interaction data being representative of the subject's interaction with a movement-based input device. The interaction data is processed with a first machine learning process to determine a set of 5 characteristics for describing the subject. The set of characteristics is then processed with a second machine-learning process to generate a classification result for the subject. An instruction is provided to the subject for directing the subject to interact with the movement-based input device, wherein the instruction defines a challenge comprising a time-varying parameter.
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Patent Agency Ranking
公开(公告)号：US20180284303A1
公开(公告)日：2018-10-04
申请号：US15762160
申请日：2016-10-11
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger STEADMAN BOOKER , Ewald ROESSL , Heiner DAERR
CPC classification number: G01T7/005 , A61B6/4241 , A61B6/585 , G01T1/24 , G01T1/247
Abstract: Photon-counting x-ray detectors (3) suffer from a degradation of their performance due to polarization. In order to correct the effects of polarization to the generated x-ray images, the invention suggests (i) exposing the radiation detector (3) to a first radiation pulse emitted by a further radiation source (11) and obtaining a first electric pulse signal generated by the radiation detector (3) in response thereto, (ii) later exposing the 5 radiation detector (3) to a second radiation pulse emitted by the further radiation source (11) during the acquisition of the image and obtaining a second electric pulse signal generated by the radiation detector (3) in response thereto, and (iii) comparing amplitudes of the first and second electric pulse signals and generating the x-ray image based on a result of the comparison. The invention provides a corresponding x-ray device and a corresponding method.
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公开(公告)号：US20180188391A1
公开(公告)日：2018-07-05
申请号：US15756611
申请日：2016-09-09
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Heiner DAERR , Axel THRAN
CPC classification number: G01T1/24 , A61B6/032 , A61B6/4241 , G01T1/29
Abstract: The invention relates to a photon counting x-ray radiation detection system. The system (31) comprises an x-ray radiation device (2) for providing polychromatic x-ray radiation (4) for traversing an examination zone (5) during a detection period of a scan. A photon counting detection device (6) comprising detection elements (3) detects the x-ray radiation after having traversed the examination zone and measures for each detection element photon counts in one or more energy bins during the detection period. A correction unit (12) estimates for each detection element an amount of a build up charge present in the detection element and corrects the measured photon counts for the detection element based on the estimated amount of the build up charge. This allows the corruption of the photon count rates caused by the build up charges to be compensated and to improve the determination of the photon counts.
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公开(公告)号：US20180137618A1
公开(公告)日：2018-05-17
申请号：US15571893
申请日：2016-05-06
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Thomas KOEHLER , Heiner DAERR , Ewald ROESSL
CPC classification number: G06T7/0012 , A61B6/502 , G06T11/005 , G06T2207/10081 , G06T2207/30068
Abstract: An apparatus and related method for processing image data supplied by a scanning phase contrast or dark-field imaging apparatus (MA). Beam hardening artifact in phase contrast and dark-field imaging can be reduced by applying a beam hardening processing operation by a beam hardening processing module (BHC) in respect of a plurality of detector readings that contribute signals to the same image pixel position or geometric ray of an imaging region of the apparatus (MA). In one embodiment, a phantom body (PB) is used to acquire calibration data on which the beam hardening processing is based.
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公开(公告)号：US20160377745A1
公开(公告)日：2016-12-29
申请号：US15038768
申请日：2014-11-20
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Heiner DAERR , Christoph HERRMANN , Frank BERGNER , Roger STEADMAN BOOKER
IPC: G01T1/24
Abstract: The present invention relates to a detection device (6) for detecting photons emitted by a radiation source (2). The detection device (6) is configured to detect the photons during a first time period. The detection device (6) comprises a sensor (10) having an intermediate direct conversion material for converting photons into electrons and holes, a shaping element (20), and a compensation unit (450, INT, 950). The compensation unit (450, INT, 950) is adapted to provide a compensation signal based on the electrical pulse and on a photoconductive gain of said sensor (10). The core of the invention is to provide circuits to reduce artifacts due to inherent errors with direct conversion detectors in spectral computed tomography by determining a compensation current, by detecting or monitoring a baseline restorer feedback signal, or by ignoring signals above the baseline level.
Abstract translation: 本发明涉及一种用于检测由辐射源（2）发射的光子的检测装置（6）。 检测装置（6）被配置为在第一时间段期间检测光子。 检测装置（6）包括具有用于将光子转换为电子和空穴的中间直接转换材料的传感器（10），成形元件（20）和补偿单元（450，INT，950）。 补偿单元（450，INT，950）适于基于电脉冲和所述传感器（10）的光电增益提供补偿信号。 本发明的核心是通过确定补偿电流，通过检测或监测基线恢复器反馈信号，或通过忽略基线水平以上的信号来提供电路，以减少由于频谱计算机断层摄影中的直接转换检测器的固有误差造成的伪影。
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公开(公告)号：US20160076935A1
公开(公告)日：2016-03-17
申请号：US14784979
申请日：2014-04-17
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Heiner DAERR , Klaus Juergen ENGEL , Christoph HERRMANN , Roger STEADMAN BOOKER , Ewald ROESSL
IPC: G01J1/44
Abstract: The invention relates to a method and a pulse processing circuit (100) for the processing of current pulses (CP) generated by incident photons (X) in a piece of converter material, for instance in a pixel (11) of a radiation detector. Deviations of the pulse shape from a reference are detected and used to identify pulse corruption due to pile-up effects at high count rates and/or charge sharing between neighboring pixels. The deviation detection may for instance be achieved by generating, with a pulse shaper (110), bipolar shaped pulses from the current pulse (CP) and/or two shaped pulses of different shapes which can be compared to each other.
Abstract translation: 本发明涉及一种方法和脉冲处理电路（100），用于处理例如在辐射探测器的像素（11）中的转换器材料中的入射光子（X）产生的电流脉冲（CP）。 检测到脉冲形状与参考的偏差，并用于识别由于高计数率下的堆积效应和/或相邻像素之间的电荷共享引起的脉冲破坏。 偏移检测可以例如通过用脉冲整形器（110）产生来自当前脉冲（CP）的双极形状脉冲和/或可以彼此比较的不同形状的两个成形脉冲来实现。
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