公开(公告)号：EP1301962A2

公开(公告)日：2003-04-16

申请号：EP01949756.9

申请日：2001-07-17

申请人： Marconi Corporation PLC

发明人： FORSTER, Ian, J. ,  KING, Patrick, F.

IPC分类号： H01Q1/00

CPC分类号： G06K19/07749 ,  B31B50/81 ,  B65B15/04 ,  B65B61/20 ,  B65C2009/0003 ,  B65D5/4233 ,  B65D25/205 ,  B65D33/004 ,  B65D75/54 ,  B65D2203/10 ,  G06K19/04 ,  G06K19/0716 ,  G06K19/07758 ,  G06K19/07771 ,  G06K19/07798 ,  G11B23/286 ,  H01Q1/22 ,  H01Q1/2208 ,  H01Q1/2225 ,  H01Q1/24 ,  H01Q1/3241 ,  H01Q5/378 ,  H01Q5/40 ,  H01Q9/28 ,  H01Q9/285 ,  H01Q9/40 ,  H01Q13/10 ,  H01Q21/28

摘要： The invention relates to a wireless communication device that is capable of communicating using a pole antenna in a first mode and a slot antenna in a second mode. The wireless communication device contains at least one conductive tab that provides an antenna. The tab(s) form a pole antenna, and the tabs may also be attached across a slot to form a slot antenna. The wireless communication device can communicate at different frequencies using the pole antenna in a first mode and the slot antenna in a second mode. The tab(s) may be attached across a slot created in a package to form a slot antenna, or the tab(s) may be attached to a slot that is created as part of the wireless communication device to form a slot antenna. The tab(s) and/or the slot may also contain an adhesive material to attach the wireless communication device to a package, container or other material. More than one slot may be provided to form a circularly polarized antenna. The wireless communication device can be placed inside a conductive package using a slot antenna to provide unshielded communications. The wireless communication device can be further adapted to detect when the package is opened and to communicate such information. The wireless communication devices can be printed or placed on a carrier or support, such as film, to be stamped onto packages in a manufacturing facility and/or assembly line. The carrier may be a conductive material in which tabs are formed as part of the carrier before the wireless communication device is attached.

公开(公告)号：EP1127334B1

公开(公告)日：2003-01-29

申请号：EP99954141.0

申请日：1999-11-04

申请人： Marconi Optical Components Limited

发明人： FORSTER, Ian James

IPC分类号： G06K19/07 ,  G01S7/35 ,  G01S13/76

CPC分类号： H03D11/08 ,  G01D4/004 ,  H03D11/04 ,  Y02B90/242 ,  Y04S20/322

摘要： A detector receiver circuit (2) for use as a wake-up detector for detecting an amplitude modulated carrier signal is described. The circuit (2) comprises: an antenna (4) for receiving the modulated carrier signal; a transistor (10), such as an FET, is connected to the antenna (4) and configured to operate as a detector of modulation of the carrier frequency. The circuit further comprises a resonator circuit (12-16) which is also connected to the transistor and configured such that the transistor (10) can simultaneously oscillate at substantially the modulation frequency; an oscillator quenching means (20) for periodically quenching oscillation of the transistor (10) and means (26, 28, 30) for sensing the characteristics of the build-up of oscillation to indicate the presence of a modulated carrier signal. How quickly the magnitude of oscillation of the transistor (10) builds up is dependent on whether the antenna is receiving a carrier signal which is modulated at the frequency of self-oscillation of the transistor and this is utilised to detect for the presence of a valid wake-up signal.

公开(公告)号：EP1269211A1

公开(公告)日：2003-01-02

申请号：EP01908009.2

申请日：2001-03-06

申请人： Marconi Optical Components Limited

发明人： YOUNG, Ian, Robert ,  WILTSHIRE, Michael, Charles, Keogh

IPC分类号： G01R33/422 ,  G01R33/341

CPC分类号： G01R33/422 ,  G01R33/3415

摘要： In magnetic resonance imaging apparatus, an array of coils (7, 8, 9, 10) is used to receive magnetic resonance signals from a desired region of a patient. Screens 11 to 13 and 14 and 15 are provided between the coils and at the ends of the array of coils to control the sensitive region A of each coil but, in accordance with the invention, the screening properties of the screens is controllable so that for example the screens may be made inoperative beneath the plane of the array of coils so that each has the field of view B, in order to vary the properties produced by the array. Other uses of screens are described.

公开(公告)号：EP1264368A1

公开(公告)日：2002-12-11

申请号：EP01908011.8

申请日：2001-03-06

申请人： Marconi Optical Components Limited

发明人： WILTSHIRE, Michael Charles Keogh ,  YOUNG, Ian Robert

IPC分类号： H01Q17/00 ,  H01Q15/00

CPC分类号： H05K9/0075 ,  H01Q17/00

摘要： Microstructured materials which can be tuned to a particular range of r.f. frequencies to display particular magnetic permeabilities have been proposed. A typical material is made of an array of capacitive elements e.g. spirals or rolls of conducting material on a non-conducting substrate. These materials can be used as screening material which is effective for the particular band of frequencies to which it is tuned. In one example, the rolls 2 to 5 are orientated normal to the face of the screen 1, which reflects or absorbs the magnetic vector of electromagnetic radiation impinging normal onto the reflector face.

公开(公告)号：EP1247888A1

公开(公告)日：2002-10-09

申请号：EP01309486.7

申请日：2001-11-09

申请人： General Domestic Appliances Limited

发明人： Watts, Derek John ,  Cornelius, Brian

IPC分类号： D06F58/04 ,  D06F58/20

CPC分类号： D06F58/20

摘要： A tumble dryer has the usual vent to the exterior, but in a cooling part of the drying cycle, a valve 13 is operated so that fresh air is drawn into the dryer for a period of time, in order to improve the drying results.

摘要翻译： 干燥器的导管，其使空气流通过装载到滚筒（3）中的衣服，与通风口（11）连通以吸引新鲜空气，使得空气流包括加热的内部空气中的一部分 干燥循环的干燥循环和未加热的外部空气用于干燥循环的另一部分。

公开(公告)号：EP1004885A3

公开(公告)日：2002-05-02

申请号：EP99308922.6

申请日：1999-11-09

申请人： Marconi Medical Systems, Inc.

发明人： Fujita, Hiroyuki ,  Burl, Michael ,  Morich, Michael A.

IPC分类号： G01R33/341

CPC分类号： G01R33/3678

摘要： A magnetic imaging apparatus generates a main magnetic field longitudinally through an image region and excites magnetic resonance in selected nuclei in a patient or subject disposed in the image area. The resonating nuclei generate radio frequency magnetic resonance signals which are received by a quadrature highpass ladder surface coil (D). The highpass ladder coil includes a central leg (34) having a capacitive element (C V ) disposed symmetrically about a midpoint (44). A like number of additional legs (30, 32, 36, 38) are disposed parallel to and symmetrically on opposite side of the central leg. Side elements (40, 42) include capacitive elements (C A ) which interconnect adjacent ends of each of the legs. The capacitive elements are disposed symmetrically about the midpoint (44) and are selected such that the coil supports at least two intrinsic resonant modes including an odd mode (50) and an even mode (52). The even mode is sensitive to fields in the plane of the coil and the odd mode is sensitive to fields in a plane orthogonal to the coil.

摘要翻译： 磁成像装置通过图像区域纵向地产生主磁场，并且在设置在图像区域中的患者或被摄体中的选定细胞核中激发磁共振。 谐振核产生由正交高通梯形线圈（D）接收的射频磁共振信号。 高速梯形线圈包括具有围绕中点（44）对称设置的电容元件（CV）的中心支脚（34）。 相似数量的附加腿（30,32,36,38）平行于对称地设置在中心腿的相对侧上。 侧元件（40,42）包括互连每个支腿的相邻端部的电容元件（CA）。 电容元件围绕中点（44）对称设置，并且被选择为使得线圈支持包括奇数模式（50）和偶模式（52）的至少两个固有谐振模式。 偶数模式对线圈平面中的场敏感，奇数模式对垂直于线圈的平面中的场敏感。

公开(公告)号：EP1199577A2

公开(公告)日：2002-04-24

申请号：EP01308866.1

申请日：2001-10-18

申请人： Marconi Medical Sytems Finland Inc.

发明人： Lappalainen, Aatu Veikko Kalevi

IPC分类号： G01R33/36

CPC分类号： G01R33/3657 ,  G01R33/3628

摘要： A main magnetic field ( B 0 ) is applied through an imaging region. High power RF excitation or manipulation electrical pulses are applied to transmit coils. The transmit coil is inherently tuned to a frequency that is different from the resonance frequency of dipoles in the imaging region that are to be resonated. The transmit coil includes a reactive element (C t ) which is switched in and out of electrical communication with other inductive and capacitive portions (L), (C 0 ) of the transmit coil to change its tuning between the resonance and off-resonance frequencies. A rectifying diode (V 2 ) and a resistor are connected in parallel with the PIN diode (V 1 ) to rectify RF signals and generate a D.C. voltage across the resistor which biases the PIN diode to its conductive state. Preferably, before an RF excitation or manipulation electrical pulse is sent to the transmit coils, a tuning synthesizer (60) generates an off-resonance radio frequency pulse which is applied to the transmit coil, causing the rectifying diode and resistor to bias the PIN diode conductive, hence retune the transmit coil to the resonance frequency by the time the resonance frequency excitation or manipulation electrical signal is applied. After the radio frequency excitation or manipulation pulse is terminated, the PIN diode (V 1 ) switches non-conductive detuning through transmit coil. When the transmit coil is detuned, it does not interfere with a receive only coil (50) as it receives resonance signals from the resonating dipoles in the imaging region.

摘要翻译： 主磁场（B 0）通过适用于成像区域。 高功率射频激励或操纵的电脉冲被施加到发射线圈。 发射线圈被固有调谐到的频率确实是从偶极子中那样将被共振成像区域的共振频率不同。 发射线圈包括被进出交换电通信的与所述发射线圈的其它电感性和电容部（L），（C 0），以改变共振频率之间和偏共振其调谐电抗元件（CT）所有。 的整流二极管，（V2）和电阻并联连接PIN二极管（V1），以纠正所述RF信号，并产生一个直流 跨越其偏置，PIN二极管，以它的导通状态电阻的电压。 优选地，前RF激励或操纵的电脉冲的合成器被发送到发射线圈，调谐（60）基因在偏共振的射频脉冲速率的所有被施加到发射线圈，使所述整流二极管和电阻，以偏置的PIN二极管 导电的，因此，通过谐振频率激励或操纵的电信号的施加时间重新调谐发射线圈的谐振频率。 射频激励脉冲或操纵结束后，PIN二极管（V1）通过切换发射线圈其他非导电性失谐。 当发射线圈失谐，它不与一个只接收线圈（50），因为它接收来自于所述成像区中的共振的偶极子的共振信号干扰。

公开(公告)号：EP1182613A2

公开(公告)日：2002-02-27

申请号：EP01306563.6

申请日：2001-07-31

申请人： Marconi Medical Systems, Inc.

发明人： Liu, Kecheng ,  Margosian, Paul M.

IPC分类号： G06T11/00

CPC分类号： G06T11/206

摘要： A diagnostic imaging system (100) and method generates a plurality of temporally resolved volume image representations (130, 132, ..., 134). A time course projection processor (140) temporally collapses the volume image representations. A spatial projection processor (146) performs a maximum or minimum intensity process along rays through voxels of a three-dimensional image representation. By sequentially temporally collapsing and maximum or minimum intensity projecting, in either order, the plurality of temporally resolved volume image representations is reduced to a two-dimensional temporally collapsed and spatially projected image representation (148) . In preferred embodiments, the present invention is directed to angiography, and more preferably to magnetic resonance angiography. In certain embodiments, time course information, such as blood flow rate information, vessel wall dynamics, contrast agent propagation, contrast agent peak arrival time, and the like, is logged in a database, providing additional diagnostic information or timing information for future reference. In this manner, more accurate images of vessel lumina, as well as blood flow time variant effects, are obtained.

摘要翻译： 诊断成像系统（100）和方法产生多个时间分辨的体积图像表示（130,132，...，134）。 时间投影处理器（140）暂时压缩音量图像表示。 空间投影处理器（146）沿着三维图像表示的体素的光线执行最大或最小强度处理。 通过顺序时间折叠和最大或最小强度投影，以任一顺序，多个时间分辨的体积图像表示被减少到二维时间折叠和空间投影的图像表示（148）。 在优选实施方案中，本发明涉及血管造影术，更优选磁共振血管造影术。 在某些实施例中，记录在数据库中的时间过程信息，例如血液流量信息，血管壁动力学，造影剂传播，造影剂峰值到达时间等，提供用于将来参考的附加诊断信息或定时信息。 以这种方式，获得血管腔的更精确的图像以及血流时间变化的效果。

公开(公告)号：EP1176558A2

公开(公告)日：2002-01-30

申请号：EP01305805.2

申请日：2001-07-05

申请人： Marconi Medical Systems, Inc.

发明人： Steckner, Michael ,  Ruohonen, Jarmo O. ,  Demeester, Gordon D. ,  Carlson, Robert K.

IPC分类号： G06T7/00

CPC分类号： G06K9/3216 ,  G06K2209/05 ,  G06T7/33 ,  G06T2207/10028 ,  G06T2207/10088 ,  G06T2207/30096

摘要： An open MRI or other diagnostic imaging system ( A ) generates a three-dimensional diagnostic image representation, which is stored in an MRI image memory (26). A laser scanner or other surface imaging system (B) generates a volumetric surface image representation that is stored in a surface image memory ( 34 ). Typically, the volume and surface images are misaligned and the magnetic resonance image may have predictable distortions. An image correlating system ( C ) determines offset, scaling, rotational, and non-linear corrections to the magnetic resonance image representation, which are implemented by an image correction processor ( 48 ). The corrected magnetic resonance image representation and the surface image representation are combined ( 50 ) and stored in a superimposed image memory ( 52 ). A video processor ( 54 ) generates image representations from selected portions of the superimposed image representation for display on a human-readable monitor ( 56 ).

摘要翻译： 开放MRI或其它诊断成像系统（A）产生存储在MRI图像存储器（26）中的三维诊断图像表示。 激光扫描仪或其他表面成像系统（B）产生存储在表面图像存储器（34）中的体积表面图像表示。 通常，体积和表面图像不对准，并且磁共振图像可能具有可预测的失真。 图像相关系统（C）确定由图像校正处理器（48）实现的磁共振图像表示的偏移，缩放，旋转和非线性校正。 将校正的磁共振图像表示和表面图像表示组合（50）并存储在叠加图像存储器（52）中。 视频处理器（54）从叠加的图像表示的选定部分生成图像表示，以在人类可读监视器（56）上显示。

公开(公告)号：EP1006370A3

公开(公告)日：2002-01-16

申请号：EP99309336.8

申请日：1999-11-23

申请人： Marconi Medical Systems, Inc.

发明人： Hawkins, William G. ,  Gagnon, Daniel

IPC分类号： G01T1/29

CPC分类号： G01T1/1615 ,  A61B6/037 ,  G01T1/2985

摘要： A method of ML-EM image reconstruction is provided for use in connection with a diagnostic imaging apparatus ( 10 ) that generates projection data. The method includes collecting projection data, including measured emission projection data. An initial emission map and attenuation map are assumed. The emission map and the attenuation map are iteratively updated. With each iteration, the emission map is recalculated by taking a previous emission map and adjusting it based upon: (i) the measured emission projection data; (ii) a reprojection of the previous emission map which is carried out with a multi-dimensional projection model; and, (iii) a reprojection of the attenuation map. As well, with each iteration, the attenuation map is recalculated by taking a previous attenuation map and adjusting it based upon: (i) the measured emission projection data; and, (ii) a reprojection of the previous emission map which is carried out with the multi-dimensional projection model. In a preferred embodiment, with source-assisted reconstruction, the recalculation of the attenuation map is additionally based upon: (iii) measured transmission projection data; and (iv) a reference or blank data set of measured transmission projection data taken without the subject present in the imaging apparatus ( 10 ).