公开(公告)号：EP1421411A2

公开(公告)日：2004-05-26

申请号：EP02797567.1

申请日：2002-08-02

申请人： FORSCHUNGSZENTRUM JÜLICH GMBH ,  Scivis GmbH, Wissenschaftliche Bildverarbeitung

发明人： SCHRAMM, Nils ,  HALLING, Horst ,  EBEL, Gernot

IPC分类号： G01T1/00

CPC分类号： G01T1/1648

摘要： The invention relates to a tomography device and method, particularly for single photon emission computed tomography (SPECT). The device for carrying out a tomography method, especially for carrying out a single photon tomography, comprises a multi-pinhole collimator and a detector for detecting gamma quanta or photons that penetrate the multi pinhole collimator. According to the device for carrying out the tomographic method, the distance beteween the object and the multi-pinhole collimator is selected to be smaller than the distance between the multi-pinhole collimator and the surface of the detector. The invention provides a device and a method with which the desired result can be achieved with a high spatial resolution and sensitivity.

公开(公告)号：EP1393094A1

公开(公告)日：2004-03-03

申请号：EP02732011.8

申请日：2002-05-28

申请人： Warburton, William K.

发明人： WARBURTON, William, K. ,  HARRIS, Jackson, T. ,  GRUDBERG, Peter, M.

IPC分类号： G01T1/00

CPC分类号： G01T1/17

摘要： Techniques for measuring the baseline of the energy filter (110) in nuclear and other spectrometers that filter pulses output (90) by a preamplifier to measure the energy of events occurring in a detector connected to the preamplifier. These spectrometers capture the peak amplitudes of the filtered pulses as estimates of the underlying event energies and substract a baseline value from these captured peak values in order to compensate for the energy filter's non-zero amplitude in the absence of any preamplifier output pulses. A second, baseline filter (120) is connected to the preamplifier's output (92), where the basewidth of this baseline filter is significantly shorter than that of the energy filter. Times are determined when the baseline filter is not filtering preamplifier output pulses, output values from the baseline filter are captured during such determined times, and these baseline values captured from the baseline filter are used to create an accurate estimate of the energy filter's baseline value. Because the baseline filter's basewidth is much shorter than the energy filter's basewidth, large numbers of valid baseline filter values can be reliably captured at very high input count rates where it becomes difficult to capture baseline samples from the energy filter itself. It thus becomes possible to maintain the spectrometer's energy resolution and peak location stability to count rates four or more times higher than is possible without the method. The technique can be applied to both digital and analog spectrometers.

公开(公告)号：EP1337877A2

公开(公告)日：2003-08-27

申请号：EP01995586.3

申请日：2001-12-03

申请人： W.O.M. World of Medicine GmbH

发明人： GÖBEL, Thomas ,  HUG, Olaf

IPC分类号： G01T1/00

CPC分类号： G01T1/161

摘要： The invention relates to a medical probe for measuring radioactive radiation, comprising a housing that can be held single-handedly. A detector device (2) comprising a semiconductor diode is disposed in the housing and produces signals that interact with at least one of the following radioactive radiations: α, β?+, β-¿ and η radiation. A signal processing device (3) processes the signals produced by the detector device (2). A power supply device (4) provides the detector device (2) and the signal processing device (3) with power. The inventive probe is especially characterized in that a reproduction device (5) for reproducing the signals processed by means of the signal processing device (3) is mounted in the housing (1). The inventive device provides a compact measuring system that facilitates an (especially wireless) flexible intraoperative and extraoperative, local measurement of radioactively labeled tissue without requiring additional appliances.

摘要翻译： 本发明涉及一种用于测量放射性辐射的医疗探针，其包括可单独保持的壳体。 包括半导体二极管的检测器装置（2）设置在壳体中并产生与以下放射性辐射中的至少一种相互作用的信号：α，β+，β - 和γ辐射。 信号处理装置（3）处理由检测装置（2）产生的信号。 电源装置（4）向检测装置（2）和信号处理装置（3）供电。 本发明的探针的特征在于，用于再现通过信号处理装置（3）处理的信号的再现装置（5）安装在壳体（1）中。 本发明的装置提供了一种紧凑的测量系统，其便于无需额外的器具的放射性标记组织的（特别是无线的）灵活的术中和外部的局部测量。

公开(公告)号：EP1113293A3

公开(公告)日：2002-09-11

申请号：EP00311612.6

申请日：2000-12-22

申请人： GENERAL ELECTRIC COMPANY

发明人： Granfors, Paul Richard ,  Pourjavid, Sussan

IPC分类号： G01T1/29 ,  G01T1/00

CPC分类号： G01T1/2928

摘要： A technique for compensating for a retained image includes sampling image data (106) from a digital detector following termination of a first exposure to model decay of the retained image. Based upon the modeled decay, further decay of the retained image is predicted (110,112,114). The predicted decay values are employed to correct or compensate for the decaying retained image in a subsequent exposure (118,120). The technique is particularly well suited to compensation of retained images in fluoroscopic exposures following radiographic exposures in a digital x-ray system.

公开(公告)号：EP0973048A3

公开(公告)日：2002-07-31

申请号：EP99305495.6

申请日：1999-07-12

申请人： GENERAL ELECTRIC COMPANY

发明人： Toth, Thomas Louis ,  Gurmen, Erdogan ,  Shen, Bing

IPC分类号： G01T1/29 ,  G01T1/00 ,  G01T1/164

CPC分类号： A61B6/032 ,  A61B6/06 ,  A61B6/4021 ,  A61B6/4085 ,  A61B6/4411 ,  G01T1/2985

摘要： Methods and apparatus for reducing spectral artifacts in a computed tomography (CT) system (10) are described. In one embodiment, the CT system (10) includes a plurality of multislice detector modules (20), a detector housing (50) and a collimator (62) adjacent the detector modules (20). Each detector module (20) is mounted to the detector housing (50) and includes a scintillator array (56). The collimator (62) includes a plurality of plates (64) that are positioned so that a x-ray beam shadow is centered over gaps in the scintillator array (56). In operation, the collimator (62) separates the x-ray beams (16) so that the scintillator gaps are protected and the x-ray beams (16) are prevented from projecting through the scintillator array elements along a shortened length path.

公开(公告)号：EP1111405A3

公开(公告)日：2002-07-24

申请号：EP00204472.5

申请日：2000-12-12

申请人： Philips Corporate Intellectual Property GmbH ,  Koninklijke Philips Electronics N.V.

发明人： Boerner, Herbert, Dr. ,  Nikol, Hans, Dr. ,  Wieczorek, Herfried, Dr.

IPC分类号： G01T1/00 ,  G01T1/202

CPC分类号： G01T1/2018

摘要： Ein Röntgendetektor, ausgerüstet mit einem Scintillator, der ein Alkalihalogenid mit einer Dotierung enthält, und mit einem Photodioden-Array mit mindestens einer Photodiode, die ein Halbleitermaterial enthält, bei dem zwischen Scintillator und dem Photodioden-Array ein Farbwandler, der einen photolumineszenten Leuchtstoff enthält, angeordnet ist, macht einen größeren Anteil der Röntgenstrahlung für die Bildanalyse nutzbar.

摘要翻译： X射线检测器包括含有碱金属卤化物与掺杂剂的闪烁体，以及具有至少一个含有半导体材料的光电二极管的光电二极管阵列。 在闪烁体和光电二极管阵列之间设置包含光致发光荧光体的颜色转换器。

公开(公告)号：EP1217387A2

公开(公告)日：2002-06-26

申请号：EP01000770.6

申请日：2001-12-19

申请人： Philips Corporate Intellectual Property GmbH ,  Koninklijke Philips Electronics N.V.

发明人： Dorscheid, Ralf ,  Grätz, Petra

IPC分类号： G01T1/00

CPC分类号： G01T1/2018 ,  H01L24/32 ,  H01L2224/16225 ,  H01L2224/32225 ,  H01L2224/73204 ,  H01L2924/00014 ,  H01L2924/00 ,  H01L2224/0401

摘要： Die Erfindung betrifft einen Detektor zum Detektieren von elektromagnetischer Strahlung mit zumindest einem Szintillator (6), zumindest einem CMOS - Chip (3) und einem keramischen Basiselement (4), wobei jeweils zwischen dem Szintillator (6) und dem CMOS - Chip (3) bzw. zwischen dem CMOS - Chip (3) und dem keramischen Basiselement (4) eine blasenfreie und bezüglich ihrer Spaltbreite definierte Zwischenschicht (2) angeordnet ist und diese Zwischenschicht (2) zumindest zwei Klebstoffe (A, B) mit unterschiedlicher Konsistenz und Abstandhalter (5) enthält.

摘要翻译： 检测器包括闪烁体（6），CMOS芯片（3）和陶瓷基体元件（4）。 在闪烁器和芯片之间或芯片和基底元件之间布置包含两种不同一致性的粘合剂（A，B）和间隔物的中间层（2）。 还包括用于在闪烁体和芯片之间或芯片和基底元件之间生产中间层的工艺的独立权利要求。 优选特征：间隔物是由Au和AlSil制成的线。 基座元件由氧化铝制成。

公开(公告)号：EP0925519B1

公开(公告)日：2002-03-20

申请号：EP97940211.2

申请日：1997-09-10

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE

发明人： BRAMBILLA, Andrea ,  POCHET, Thierry

IPC分类号： G01T1/00

CPC分类号： G01T1/026

公开(公告)号：EP0979027A3

公开(公告)日：2001-08-29

申请号：EP99306158.9

申请日：1999-08-03

申请人： GENERAL ELECTRIC COMPANY

发明人： Aufrichtig, Richard ,  Gordon, Clarence L., III ,  Relihan, Gary Francis ,  Ma, Baoming

IPC分类号： H05G1/28 ,  G01T1/00

CPC分类号： H05G1/28

摘要： A neural network prediction has been provided for predicting radiation exposure and/or Air-Kerma at a predefined arbitrary distance during an x-ray exposure; and for predicting radiation exposure and/or Air-Kerma area product for a radiographic x-ray exposure. The Air-Kerma levels are predicted directly from the x-ray exposure parameters. The method or model is provided to predict the radiation exposure or Air-Kerma for an arbitrary radiographic x-ray exposure by providing input variables (36,38,40) to identify the spectral characteristics of the x-ray beam, providing a neural net (32) which has been trained to calculate the exposure or Air-Kerma value, and by scaling (34) the neural net output by the calibrated tube efficiency (52), and the actual current through the x-ray tube and the duration of the exposure. The prediction for exposure/Air-Kerma further applies (50) the actual source-toobject distance, and the prediction for exposure/AirKerma area product further applies (54) the actual imaged field area at a source-to-image distance.

公开(公告)号：EP1111406A2

公开(公告)日：2001-06-27

申请号：EP00969049.6

申请日：2000-04-26

申请人： Danilov, Vyacheslav Alexandrovich ,  Kozus, Viktor Ivanovich

发明人： Danilov, Vyacheslav Alexandrovich ,  Kozus, Viktor Ivanovich

IPC分类号： G01T1/00

CPC分类号： G01J1/44

摘要： The present invention pertains to the field of radiation detection techniques and can be used for increasing the sensitivity and precision when recording a radiation intensity as well as for increasing the dynamic range of the radiation intensities to be detected. In a first embodiment, the detector includes a photodiode and a load connected in series. The load is connected to the photodiode by its signal output while it is connected on the other side to a common line. The detector further includes a transistor and a request pulse generator. The second electrode of the photodiode is connected to the first electrode of the transistor which has its control electrode connected to the output of the request pulse generator. The third electrode of the transistor is connected to the common line. In a second and a third embodiments, the radiation detector further includes a radiation-sensitive member connected on one side to a voltage supply line, as well as a load connected on one side to the common line. The detector further includes a transistor and a pulse generator, and also includes a capacitor in one of the embodiments.

摘要翻译： 本发明涉及放射线检测技术领域，可用于提高记录辐射强度时的灵敏度和精确度，以及增加待检测辐射强度的动态范围。 在第一实施例中，检测器包括串联连接的光电二极管和负载。 负载通过信号输出连接到光电二极管，而另一端连接到公共线。 该检测器还包括晶体管和请求脉冲发生器。 光电二极管的第二电极连接到晶体管的第一电极，晶体管的第一电极的控制电极连接到请求脉冲发生器的输出端。 晶体管的第三电极连接到公共线。 在第二和第三实施例中，辐射检测器还包括辐射敏感构件，辐射敏感构件的一侧连接到电压供给线以及连接到公共线的一侧的负载。 该检测器还包括晶体管和脉冲发生器，并且在其中一个实施例中还包括电容器。