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1. 发明授权

EP3427667B1 TIME CALIBRATION IN PET DEVICE 有权转让
公开(公告)号：EP3427667B1
公开(公告)日：2020-10-07
申请号：EP18182480.6
申请日：2018-07-09
申请人： Neusoft Medical Systems Co., Ltd.
发明人： WANG, Xi , ZHAO, Jian , WU, Guocheng , XU, Baowei , LIANG, Guodong
IPC分类号： A61B6/03 , A61B6/00 , G01T1/172 , G01T1/20 , G01T1/29 , G01T1/36 , G01T7/00

2. 发明授权

EP1529226B1 MISSION-SPECIFIC POSITRON EMISSION TOMOGRAPHY 有权
标题翻译：特派团特定正电子发射断层扫描装置
公开(公告)号：EP1529226B1
公开(公告)日：2011-11-09
申请号：EP03785100.3
申请日：2003-08-11
申请人： Naviscan Pet Systems, Inc.
发明人： PETER, William , WEINBERG, Irving, N. , YARNALL, Stephen, T.
IPC分类号： G01T1/29 , G01T1/172 , A61B6/03
CPC分类号： G01T1/2985 , A61B6/037 , A61B6/508 , G01T1/1642
摘要： A handheld gamma camera or PET system with a disposable detector head is provided. This system includes a configuration of a gamma camera or PET scanner in which optical fibers or bundles of optical fibers are coupled to a scintillator or array of scintillators and the other end of the optical fibers or bundles of optical fibers are coupled to a light-sensitive camera, such as a photomultiplier. The system may further include a mechanism to rapidly couple and/or decouple the optical fiber or fibers from the light sensitive camera or from the scintillator or array of scintillators so that the detector can be disposed of or sterilized without damaging the lightsensitive camera. A method for image reconstruction and image simulation is also provided. The method includes an application of deterministic sampling using Gaussian quadrature parameters to construct a transition matrix for purposes of image reconstruction.

3. 发明授权

EP1116047B1 PIXELATED PHOTON DETECTOR 有权
标题翻译：光子探测器中的像素矩阵的形式
公开(公告)号：EP1116047B1
公开(公告)日：2006-07-12
申请号：EP98946688.3
申请日：1998-09-24
申请人： Elgems Ltd.
发明人： WAINER, Naor , HEFETZ, Yaron , AMRAMI, Aharon , PANSKY, Amir
IPC分类号： G01T1/172 , G01T1/24 , G01T1/29
CPC分类号： G01T1/2985 , G01T1/172 , G01T1/241 , G01T1/242 , G01T1/244 , G01T1/2928
摘要： A pixelated detector for detecting photons is provided comprising: a semiconductor crystal; a cathode electrode on a first surface of the crystal; an anode comprising a plurality of anode pixel electrodes on a second surface of the crystal; and a signal generator that receives signals from at least one electrode of the electrodes. When a photon is incident on the detector the signal generator generates a timing signal responsive to signals induced on the at least one electrode by electrons and holes produced by the incident photon and the at least one electrode has a size larger than the size of a single anode pixel electrode.

4. 发明公开

EP1325355A2 SPECT GAMMA CAMERA 有权
标题翻译： SPECT伽玛照相机
公开(公告)号：EP1325355A2
公开(公告)日：2003-07-09
申请号：EP01961064.1
申请日：2001-08-08
申请人： U.C.G. Technologies Ltd.
发明人： SHWARTZ, Shoulamit, C. , OHANA, Israel
IPC分类号： G01T1/172
CPC分类号： G01T1/1644 , A61B6/037
摘要： A method and apparatus of obtaining and reconstructing an image of a portion of a body, administered by a radiopharmaceutical substance, by using Single-photon emission computerized tomography (SPECT) for determination of functional information thereon. The method comprises: acquiring gamma ray photons (3) emitted from said portion by means of a detector (2) capable of converting the photons into electric signals, the detector having at least one crystal (6) and allowing said gamma rays having incident angles essentially exceeding 5 degrees and, preferably, exceeding 10 degrees to be detected; processing said electric signals by a position logic circuitry (7) and thereby transforming them into data indicative of positions on said photon detector crystal(6), where the photons (3) have impinged the detector (2); and reconstructing an image of a spatial distribution of the pharmaceutical substance within the portion of the body (5) by processing said data and taking into consideration weight values which are functions of angles and, possibly, distances between different elements of the portion (4) of the body (5) and corresponding elements of this position's projection on the detector (2).

5. 发明公开

EP4350396A1 PET APPARATUS, DATA PROCESSING METHOD AND PROGRAM 审中-实审
公开(公告)号：EP4350396A1
公开(公告)日：2024-04-10
申请号：EP23201886.1
申请日：2023-10-05
申请人： Canon Medical Systems Corporation
发明人： LI, Xiaoli , QIANG, Yi , KOLTHAMMER, Jeffrey , MIYAHARA, Masaki
IPC分类号： G01T1/17 , G01T1/172 , G01T1/29
摘要： A positron emission tomography (PET) apparatus(500) is provided having a plurality of detector subsystems, including processing circuitry to determine, for each detector subsystem of the plurality of detector subsystems, a singles count loss correction factor of the detector subsystem; determine, for each detector subsystem pair of a plurality of pairs of the detector subsystems, a coincidence count loss correction factor for the detector subsystem pair; calculate a scanner coincidence count loss correction factor for the PET apparatus based on the coincidence count loss correction factors determined for the plurality of pairs of the detector subsystems; and reconstruct an image based on the calculated scanner count loss correction factor and scan data acquired from a scan of a patient performed using the PET apparatus.

6. 发明公开

EP4028796A1 SENSOR AND COINCIDENCE RADIATION DETECTION DEVICE 审中-实审转让
公开(公告)号：EP4028796A1
公开(公告)日：2022-07-20
申请号：EP20862243.1
申请日：2020-09-09
申请人： Swinburne University of Technology
发明人： KRISHNAN, Shanti , WEBSTER, Craig , DUFFY, Alan
IPC分类号： G01T1/172 , G01T1/16 , G01T1/20 , G01T1/24

7. 发明公开

EP2656111A1 PROCEDE DE MESURE DU TAUX DE COMPTAGE DE COÏNCIDENCES, UTILISANT UNE CONVERSION TEMPS-NUMERIQUE ET UNE METHODE DE TEMPS MORT RECONDUCTIBLE AVEC MESURE DU TEMPS ACTIF 审中-公开
标题翻译：测量巧合方法计算使用时间数值转换和复位TOTZEITVERFAHRENS有测量活动时间
公开(公告)号：EP2656111A1
公开(公告)日：2013-10-30
申请号：EP11804670.5
申请日：2011-12-19
申请人： Commissariat à l'Énergie Atomique et aux Énergies Alternatives
发明人： BOBIN, Christophe
IPC分类号： G01T1/17 , G01T1/172
CPC分类号： G01R29/0273 , G01T1/171 , G01T1/172
摘要： Method for measuring the coincidence count rate, using a time-numeric conversion and a resettable dead time method with measurement of the active time. The count rate of events that coincide between radiation detectors (4, 6, 8) operating in parallel is measured, the time-based fluctuations in the coinciding events are converted to a numerical form and the resettable dead time method with measurement of the active time is used to eliminate all the other correlated events likely to occur in the same detector. According to the invention, the time-based distributions of the intervals of time separating pulses are logged and the count rate of the coinciding events is measured using the logged time-based distributions. The invention applies notably to the triple to double coincidences ratio method.

8. 发明公开

EP1257848A4 GAMMA-RAY IMAGING 审中-公开
标题翻译： GAMMASTRAHLENABBILDUNG
公开(公告)号：EP1257848A4
公开(公告)日：2007-01-24
申请号：EP00974182
申请日：2000-11-14
申请人： COMMW SCIENT IND RES ORG
发明人： TICKNER JAMES RICHARD
IPC分类号： G01T1/29 , G01N23/20 , G01N23/203 , G01T1/172 , G01V5/02
CPC分类号： G01N23/20 , G01T1/172 , G01T1/2985
摘要： The specification describes an instrument and a method for determining information about an object (J), only one side of which is available for examination. The method involves exposing the object to gamma-rays and measuring the position and/or time of arrival of gamma-rays at a detector (D). The instrument includes a source of gamma-rays (S) located so that at least some gamma-rays impact upon the object, and a detector surrounded by a shield (C) having an aperture (A) for facing at the object to be studied. The detector is capable of measuring the position and/or time of arrival at the detector of gamma-rays passing through the aperture.

9. 发明公开

EP1116047A1 PIXELATED PHOTON DETECTOR 有权
标题翻译：光子探测器中的像素矩阵的形式
公开(公告)号：EP1116047A1
公开(公告)日：2001-07-18
申请号：EP98946688.3
申请日：1998-09-24
申请人： Elgems Ltd.
发明人： WAINER, Naor , HEFETZ, Yaron , AMRAMI, Aharon , PANSKY, Amir
IPC分类号： G01T1/172 , G01T1/24 , G01T1/29
CPC分类号： G01T1/2985 , G01T1/172 , G01T1/241 , G01T1/242 , G01T1/244 , G01T1/2928
摘要： A pixelated detector for detecting photons is provided comprising: a semiconductor crystal; a cathode electrode on a first surface of the crystal; an anode comprising a plurality of anode pixel electrodes on a second surface of the crystal; and a signal generator that receives signals from at least one electrode of the electrodes. When a photon is incident on the detector the signal generator generates a timing signal responsive to signals induced on the at least one electrode by electrons and holes produced by the incident photon and the at least one electrode has a size larger than the size of a single anode pixel electrode.

10. 发明公开

EP0667539A1 Method for measuring gamma-rays of radionuclides, particularly in primary water of nuclear reactor 无效
标题翻译：用于测量放射性核素的γ射线，特别是用于核反应堆的Primärewasser方法。
公开(公告)号：EP0667539A1
公开(公告)日：1995-08-16
申请号：EP95100314.4
申请日：1995-01-11
申请人： NUCLEAR ENGINEERING, LTD.
发明人： Murakami, Ryuji , Yamada, Masataka , Shintani, Hirofumi , Ando, Shingo
IPC分类号： G01T1/172 , G01T7/00 , G01T1/36
CPC分类号： G01T1/172 , G01T1/36 , G01T7/00
摘要： A gamma-rays measurement method of radionucludes (iodine-131, cobalt-60, etc.) coexisting with radionuclides (nitrogen-13, fluorine-18, cobalt-58, etc.) each emitting a pair of annihilation gamma-rays, particularly in primary water of a nuclear reactor by the use of a gamma-ray spectrometric system which includes a primary detector (1) for detecting the gamma-rays and the one annihilation gamma-rays as pulses, a secondary detector (2) for detecting the other annihilation gamma-rays as pulses, and shield detector (3) for detecting gamma-rays Compton-scattered and escaped from the primary to shield detectors as pulses. The method comprises counting the pulses of the secondary detector in anticoincidence with the pulses of the primary detector, thereby to reject the recording of the annihilation gamma-rays from the primary detector, thus minimizing the annihilation gamma-rays disturbing to the measurement, followed by determining count numbers of the gamma-rays. Detection limits of the gamma-rays can be elevated significantly thereby. Simultaneously, further anticoincidence counting of the shield detector with the primary detector can be conducted to diminish the Compton-scattered gamma-rays.
摘要翻译： radionucludes的伽玛射线测定法（碘-131，钴-60，等）共存用放射性核素（氮-13，氟-18，钴-58，等），每个发射的一对湮没γ射线，特别是在通过使用γ射线光谱测定系统，该系统包括用于检测伽马射线和所述一个湮灭γ射线作为脉冲的主检测器（1），用于检测所述二次检测器（2）的一个核反应堆的主水其他湮灭γ射线作为脉冲，并且屏蔽检测器（3），用于检测γ射线的康普顿散射和从主逃到屏蔽探测器的脉冲。该方法包括与主检测器的脉冲进行计数的二次检测器的脉冲反符合，从而从初级检测器拒绝湮灭γ射线的记录，从而最小化湮灭γ射线干扰的测量，随后伽玛射线的确定性采矿计数的数字。伽玛射线的检测限可以显着，从而升高。同时，与主检测器的屏蔽检测器的另外的反符合计数可以进行以减少康普顿散射的γ射线。

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