-
公开(公告)号：US10996351B2
公开(公告)日：2021-05-04
申请号：US16500231
申请日：2018-04-04
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Christoph Herrmann
IPC: G01T1/24 , H03K5/1532
Abstract: The invention relates to a pulse shaper (18). The pulse shaper (18) comprises an integrator (19) for generating a pulse having a peak amplitude indicative of the energy of a detected photon, a feedback resistor (22), switchable discharge circuitry (23) for discharging the integrator (19), and a peak detector (24) for detecting the peak of the pulse. The pulse shaper is adapted to start the discharge of the integrator by the switchable discharge circuitry based on the detection of the peak and to connect the feedback resistor in parallel to the integrator during a period of the pulse generation and to disconnect the feedback resistor during another period of the pulse generation. The pulse shaper can be such that the generation of the pulse is substantially unhindered by any noticeable concurrent discharging mechanism while, at the same time, the occurrence of energy pedestals can be efficiently avoided.
-
公开(公告)号：US10809396B2
公开(公告)日：2020-10-20
申请号：US15742625
申请日：2016-07-04
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Ira Micah Blevis , Roger Steadman Booker , Christoph Herrmann
Abstract: An imaging system (100) includes a detector module (114). The detector module includes a block (300) of a plurality of direct conversion photon counting detector pixels (122) and corresponding electronics (124, 604, 606, 132, 134 or 124, 128, 130, 134, 802) with hardware for both high energy resolution imaging mode and high X-ray flux imaging mode connected with the block of the plurality of direct conversion photon counting detector pixels. A method includes identifying a scanning mode for a selected imaging protocol, wherein the scanning modes includes one of a higher energy resolution mode and a higher X-ray flux mode, configuring a detector module, which is configurable for both the higher energy resolution mode and the higher X-ray flux mode, based on the identified scanning mode, performing the scan with the detector module configured for the mode of the selected imaging protocol, and processing scan data from the scan, generating volumetric image data.
-
公开(公告)号：US10557806B2
公开(公告)日：2020-02-11
申请号：US15765726
申请日：2016-10-12
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Ewald Roessl
IPC: G01N23/04 , G01N23/046 , A61B6/00 , A61B6/03
Abstract: The present invention relates to a dual- or multi-source CT system and method. For suppressing or even completely eliminating the negative effects of cross-scatter, the proposed CT system comprises two x-ray sources (10, 11), two detectors (13, 14), two read-out units (15, 16), a control unit (17) and a reconstruction unit (19). Further, a scatter correction unit (18) is provided or the read-out units (15, 16) are configured to generate scatter-corrected read-out signals from the detected radiation, wherein a scatter-corrected read-out signal is generated from the radiation detected by a detector during a single projection interval (I) including multiple repetitions of three phases, in which the sources are alternately switched on and off and in which the read-out units alternately register primary radiation or cross-scatter radiation.
-
34.发明授权公开(公告)号：US10539688B2
公开(公告)日：2020-01-21
申请号：US16335819
申请日：2018-08-03
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Ewald Roessl , Walter Ruetten
Abstract: In a conventional phase-contrast X-ray imaging system, a source grating G0 generates an array of partially coherent line sources which illuminate an object and thereafter phase grating G1. The periodicity in the phase grating is self-imaged at certain instances further away from the X-ray source and sampled by a mechanically movable third absorptive analyzer grating G2 before the demodulated fringe intensity is detected by a conventional X-5 ray detector. This application proposes to directly demodulate the fringe intensity using a structured scintillator having a plurality of slabs in alignment with sub-pixels of an optical detector layer, in combination with electronic signal read-out approaches. Therefore, a mechanically movable third absorptive analyzer grating G2 can be omitted from a phase-contrast X-ray imaging system.
-
公开(公告)号：US09753157B2
公开(公告)日：2017-09-05
申请号：US15036561
申请日：2015-09-15
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Christoph Herrmann , Frank Verbakel
CPC classification number: G01T1/244 , A61B6/032 , A61B6/4488 , G01T1/247
Abstract: The invention relates to a radiation detector (100′) and a method for detecting radiation, particularly for detecting X-rays (X) in a CT imaging apparatus (1000′). According to a preferred embodiment, the radiation detector (100′) comprises a conversion element (110) for converting incident radiation (X) into electrical signals which are read out and processed by a readout circuit (120). A heating device comprising the heat source (135′) of a Peltier element is provided with which the conversion element (110) can controllably be heated in order to reduce negative effects, e.g. of polarization, on image accuracy, wherein the heat sink (137′) of the Peltier element is oriented towards the readout circuit.
-
Patent Agency Ranking
公开(公告)号：US09535174B2
公开(公告)日：2017-01-03
申请号：US14427015
申请日：2013-09-18
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Klaus Juergen Engel , Roger Steadman Booker , Christoph Herrmann
IPC: G01T1/24
Abstract: The present invention discloses a pixilated direct conversion photon counting detector with a direct conversion material layer and a pixilated electrode. Individual electrode pixels are segmented into three segments (510, 520, 530), wherein one of the segments (520) is operated at a more electrically repellant value than that of the other two (510, 530). Said other two segments are connected to electric circuitry (610, 611, 620, 630) that is arranged to generate signals which are indicative of a count of electrons or holes that approach each of the respective electrode pixel segments and to subtract the generated signals from each other.
Abstract translation: 本发明公开了一种具有直接转换材料层和像素化电极的像素化直接转换光子计数检测器。 单个电极像素被分割成三个段（510,520,530），其中段（520）中的一个以比其他两个（510,530）的电阻值更大的电驱动值操作。 所述另外两个部分连接到电路（610,611,620,630），电路被布置成产生指示接近各个电极像素段中的每一个的电子或空穴的计数的信号，并从 彼此。
-
公开(公告)号：US20160306053A1
公开(公告)日：2016-10-20
申请号：US15100659
申请日：2014-11-21
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Gereon Vogtmeier
CPC classification number: G01T1/247 , A61B6/032 , G01T1/1648 , G01T1/2018
Abstract: An imaging detector module (112) of an imaging system includes at least one detector pixel (114) and self-diagnosing circuitry (116). The self-diagnosing circuitry includes a microprocessor (202) and at least measurement device (210). The micro processor controls the at least measurement device to measure at least one parameter of the at least one detector pixel, wherein a value of the at least one parameter is indicative of a health state of the imaging system. A method includes employing self-diagnosing circuitry embedded in an imaging detector module to measure at least one parameter of at least one detector pixel of the imaging detector module. A value of the at least one parameter is indicative of a health state of the imaging detector. The method further includes generating, with the self diagnosing circuitry, a signal indicating a health state of the imaging detector module based on the measured at least one parameter.
Abstract translation: 成像系统的成像检测器模块（112）包括至少一个检测器像素（114）和自诊断电路（116）。 自诊断电路包括微处理器（202）和至少测量装置（210）。 所述微处理器控制所述至少测量装置以测量所述至少一个检测器像素的至少一个参数，其中所述至少一个参数的值指示所述成像系统的健康状态。 一种方法包括使用嵌入在成像检测器模块中的自诊断电路来测量成像检测器模块的至少一个检测器像素的至少一个参数。 至少一个参数的值表示成像检测器的健康状态。 该方法还包括基于所测量的至少一个参数，利用自诊断电路产生指示成像检测器模块的健康状态的信号。
-
公开(公告)号：US20150285676A1
公开(公告)日：2015-10-08
申请号：US14440609
申请日：2013-11-08
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Christoph Herrmann , Roger Steadman Booker
CPC classification number: G01J1/44 , G01J2001/4446 , G01T1/00 , G01T1/24 , H01L31/02966 , H01L31/085 , H01L31/09 , H01L31/1832
Abstract: The invention relates to radiation detection with a directly converting semiconductor layer for converting an incident radiation into electrical signals. Sub-band infra-red (IR) irradiation considerably reduces polarization in the directly converting semi-conductor material when irradiated, so that counting is possible at higher tube currents without any baseline shift. An IR irradiation device is integrated into the readout circuit to which the crystal is flip-chip bonded in order to enable 4-side-buttable crystals.
Abstract translation: 本发明涉及具有直接转换半导体层的放射线检测，用于将入射辐射转换为电信号。 子带红外（IR）照射显着降低了直接转换半导体材料的照射时的极化，从而可以在更高的管电流下进行计数，而无需基线偏移。 将IR照射装置集成到晶体被倒装芯片接合的读出电路中，以便能够实现4面可晶的晶体。
-
公开(公告)号：US20150234059A1
公开(公告)日：2015-08-20
申请号：US14421303
申请日：2013-07-15
Applicant: KONINKLIJKE PHILIPS N.V. , PHILIPS GMBH
Inventor： Ewald Roessl , Daerr Heiner , Roger Steadman Booker
CPC classification number: G01T1/247 , G01N23/046 , G01T1/171 , G01T1/248
Abstract: The invention relates to a method and an X-ray detector (100) for detecting incident X-ray photons (X). The X-ray detector (100) comprises at least one sensor unit (105) in which X-ray photons (X) are converted into sensor signals (s) and at least one flux sensor (104) for generating a flux signal (f) related to the flux of photons (X). The sensor signals (s) are corrected based on the flux signal (f). In a preferred embodiment, the sensor signals (s) represent a spectrally resolved pulse counting. The flux sensor (104) may be integrated into an ASIC (103) that is coupled to the sensor unit (105).
Abstract translation: 本发明涉及一种用于检测入射的X射线光子（X）的方法和X射线检测器（100）。 X射线检测器（100）包括至少一个传感器单元（105），其中将X射线光子（X）转换成传感器信号和至少一个通量传感器（104），用于产生通量信号（f ）与光子（X）的通量有关。 基于通量信号（f）校正传感器信号。 在优选实施例中，传感器信号表示频谱分辨的脉冲计数。 通量传感器（104）可以集成到耦合到传感器单元（105）的ASIC（103）中。
-
公开(公告)号：US12279900B2
公开(公告)日：2025-04-22
申请号：US17642413
申请日：2021-07-05
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roger Steadman Booker , Walter Ruetten , Matthias Simon
Abstract: System (SYS) for supporting X-ray imaging and related methods. The system (SYS) comprises a machine learning module (MLM), a logic (LG) configured to compute output correction information for adjusting an imaging geometry of an X-ray imaging apparatus to achieve a target imaging geometry. A modulator (MOD,L-MOD, H-MOD, S-MOD) is the system is configured to provide a user instruction for imaging geometry adjustment. The user instruction is modulated based on the output correction information. The machine learning module was previously trained on training data including a specific user's responses to previous instructions.
-
-
-
-
-
-
-
-
-
Search Results
50
records
(took 0.022 seconds)
