公开(公告)号：US20160084968A1

公开(公告)日：2016-03-24

申请号：US14889932

申请日：2014-04-30

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ira Micah BLEVIS ,  Daniel RUBIN ,  Oren ZARCHIN ,  Frank VERBAKEL

IPC: G01T1/24 ,  H04N5/357 ,  H04N5/378 ,  G01T1/18 ,  H04N5/32

CPC classification number: G01T1/24 ,  G01T1/18 ,  G01T1/247 ,  G01T1/2928 ,  H04N5/32 ,  H04N5/357 ,  H04N5/378

Abstract: A system (100) includes a photon counting detector array (116) including a direct conversion material (118) and a plurality of detector pixels (120) affixed thereto, and a split signal corrector (126) that corrects the output of the plurality of detector pixels for split signals. A method includes receiving an output signal of each of a plurality of detector pixels affixed to a direction conversion material of photon counting detector array, and correcting the output of the plurality of detector pixels for split signals. A computer readable storage medium encoded with computer readable instructions, which, when executed by a processer, cause the processor to: receive an output signal of each of a plurality of detector pixels affixed to a direction conversion material of photon counting detector array, and correct the output of the plurality of detector pixels for split signals

Abstract translation: 系统（100）包括光子计数检测器阵列（116），其包括直接转换材料（118）和固定到其上的多个检测器像素（120），以及分割信号校正器（126），其校正多个 用于分离信号的检测器像素。 一种方法包括接收固定到光子计数检测器阵列的方向转换材料的多个检测器像素中的每一个的输出信号，以及校正用于分离信号的多个检测器像素的输出。 一种用计算机可读指令编码的计算机可读存储介质，其在由处理器执行时使其处理器：接收固定到光子计数检测器阵列的方向转换材料的多个检测器像素中的每一个的输出信号，并且校正 用于分离信号的多个检测器像素的输出

公开(公告)号：US20220155471A1

公开(公告)日：2022-05-19

申请号：US17442324

申请日：2020-03-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ira Micah BLEVIS

IPC: G01T1/29

Abstract: A time of flight positron emission tomography (TOF PET) detector comprises a direct conversion semiconductor crystal (e.g. CZT), cathode and anode disposed on respective first and opposite second faces of the crystal, and a timing circuit operatively connected to generate a trigger signal in response to absorption of a 511 keV gamma ray by the direct conversion semiconductor crystal. The timing circuit generates the trigger signal with jitter of 500 picoseconds or lower. One or both of the cathode and/or anode is a blocking electrode. In some embodiments, the cathode is a single continuous electrode, the timing circuit is operatively connected with the cathode, the anode comprises an array of electrode pixels disposed on the second face of the direct conversion semiconductor crystal, and a sense circuit is operatively connected with the electrode pixels of the anode. TOF PET scanners including such detectors are also disclosed.

公开(公告)号：US20160245932A1

公开(公告)日：2016-08-25

申请号：US15031776

申请日：2014-10-27

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ira Micah BLEVIS

IPC: G01T1/24 ,  A61B6/03

CPC classification number: G01T1/24 ,  A61B6/037

Abstract: A radiation-sensitive detector array (100) including a first side (120), a second side (110) in opposed relation to the first side, and a detector substrate (130) positioned between the first and second sides is presented. The first side is constructed as a non-planar or uneven shape. The first side is a cathode and the second side is an anode. The cathode may be a field emission cathode (FEC) and the detector substrate may be a Cadmium Zinc Telluride (CZT) detector substrate. The non-planar or uneven shape may be a series of equally spaced apart protrusions, each of the protrusions being a pyramidal construction including a peak, the peak adapted and dimensioned to cause electric field lines to focus or converge thereon.

Abstract translation: 提供了包括第一侧（120），与第一侧相对的第二侧（110）和位于第一和第二侧之间的检测器基板（130）的辐射敏感检测器阵列（100）。 第一面被构造成非平面或不均匀的形状。 第一面是阴极，第二面是阳极。 阴极可以是场发射阴极（FEC），并且检测器衬底可以是碲化锌碲化镉（CZT）检测器衬底。 非平面或不均匀的形状可以是一系列等距间隔的突起，每个突起是包括峰的金字塔结构，所述峰适合并且被设计成使得电场线在其上聚焦或收敛。

公开(公告)号：US20180196149A1

公开(公告)日：2018-07-12

申请号：US15742625

申请日：2016-07-04

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ira Micah BLEVIS ,  Roger STEADMAN BOOKER ,  Christoph HERRMANN

IPC: G01T1/24

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：US20150362604A1

公开(公告)日：2015-12-17

申请号：US14768231

申请日：2014-02-28

Applicant: KONINKLIJKE PHILIPS N.V. ,  PHILIPS GMBH

Inventor： Frank VERBAKEL ,  Klaus Juergen ENGEL ,  Antonius Johannes Maria NELLISSEN ,  Herfried Karl WIECZOREK ,  Eric Cornelis Egbertus VAN GRUNSVEN ,  Ira Micah BLEVIS ,  Roger STEADMAN BOOKER

IPC: G01T1/24 ,  G01N23/02

CPC classification number: G01T1/244 ,  G01N23/02 ,  G01T1/24

Abstract: The invention relates to a detector (6) for detecting radiation, especially x-ray radiation used in a computed tomography system. The detector comprises a direct conversion material (9) for converting radiation into electrons and holes, which are used for generating an electrical detection signal. The direct conversion material is illuminated with illumination light being broadband visible and/or broadband infrared light for reducing, in particular, eliminating, a polarization of the direct conversion material, which may occur when being traversed by the radiation to be detected and which may reduce the detection performance. By reducing the polarization of the direct conversion material the detection performance can be improved.

Abstract translation: 本发明涉及一种用于检测辐射的检测器（6），特别是用于计算机断层摄影系统中的X射线辐射。 检测器包括用于将辐射转换成电子和空穴的直接转换材料（9），用于产生电检测信号。 直接转换材料被照明为具有宽带可见光和/或宽带红外光的照明光，用于减少特别是消除直接转换材料的极化，当被被检测的辐射穿过时可能发生极化，并且可以减少 检测性能。 通过降低直接转换材料的极化，可以提高检测性能。