专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP1794608B1 ADJUSTMENT OF RF-FIELD HOMOGENEITY IN MAGNETIC RESONANCE IMAGING 有权
标题翻译：设置RF场均匀IN磁成像
公开(公告)号：EP1794608B1
公开(公告)日：2013-05-01
申请号：EP05786836.6
申请日：2005-09-13
申请人： Koninklijke Philips Electronics N.V.
发明人： HARVEY, Paul, R. , PRINS, Willem, M. , ZHAI, Zhiyong , FUDERER, Miha , VAN YPEREN, Gerrit, H.
IPC分类号： G01R33/54 , G01R33/565
CPC分类号： G01R33/543 , G01R33/34046 , G01R33/5612 , G01R33/5659

2. 发明公开

EP2223135A1 TRANSMIT/RECEIVE COIL FOR ULTRA-HIGH FIELD MRI 审中-公开
标题翻译：发送/接收线圈超高场磁共振
公开(公告)号：EP2223135A1
公开(公告)日：2010-09-01
申请号：EP08858753.0
申请日：2008-12-12
申请人： Koninklijke Philips Electronics N.V.
发明人： ZHAI, Zhiyong , GAUSS, Robert Charles , WONG, Eddy Yu Ping , MORICH, Michael , NIEMAN, Kevin Mitchell , DEMEESTER, Gordon
IPC分类号： G01R33/3415
CPC分类号： G01R33/3415 , G01R33/5659
摘要： A magnetic resonance coil comprises a first set of coil elements (54, 56, 80) operatively connectable with a transmit channel (66, 74) to couple with a transmit region of sensitivity for a selected load at a magnetic field strength greater than 3 Tesla, and a second set of coil elements (52, 54, 82) operatively connectable with a receive channel (66, 74) to couple with a receive region of sensitivity for the selected load at the magnetic field strength greater than 3 Tesla. The first set of coil elements is arranged proximate to but not surrounding the transmit region of sensitivity, and the second set of coil elements is arranged proximate to but not surrounding the receive region of sensitivity. The first set of coil elements and the second set of coil elements having at least one coil element (52, 56) not in common. The first and second sets of coil elements define transmit and receive regions of sensitivity for the selected load at the magnetic field strength greater than 3 Tesla that are substantially similar.

3. 发明授权

EP1894033B1 RF VOLUME COIL WITH SELECTABLE FIELD OF VIEW 有权
标题翻译：视力可选择领域RF体积线圈
公开(公告)号：EP1894033B1
公开(公告)日：2010-07-14
申请号：EP06756128.2
申请日：2006-06-13
申请人： Koninklijke Philips Electronics N.V.
发明人： ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D. , GAUSS, Robert, C.
IPC分类号： G01R33/34
CPC分类号： G01R33/34046 , G01R33/3664

4. 发明公开

EP1934622A1 MULTIPLE-CHANNEL TRANSMIT MAGNETIC RESONANCE 审中-公开
标题翻译：多通道发射器磁
公开(公告)号：EP1934622A1
公开(公告)日：2008-06-25
申请号：EP06809301.2
申请日：2006-09-14
申请人： Koninklijke Philips Electronics N.V.
发明人： ZHAI, Zhiyong , MORICH, Michael, A. , DE MEESTER, Gordon, D.
IPC分类号： G01R33/32 , G01R33/3415
CPC分类号： G01R33/5612 , G01R33/246 , G01R33/3415
摘要： In a transmit apparatus, a multi-channel radio frequency transmitter (30, 46) includes a plurality of transmit elements (32) defining at least two independently operable transmit channels. A transmit configuration selector (54) determines a selected transmit configuration (60) specifying amplitude and phase applied to each transmit channel to generate a B1 field in a corresponding selected region (90) of a subject (38) coupled with the radio frequency transmitter. The transmit configuration selector determines the selected transmit configuration based on B1 mapping (58) of the subject and a B1 field quality assessment employing at least two different B1 field quality measures.

5. 发明公开

EP1642151A1 CONTROL OF SPECIFIC ABSORPTION RATE (ASR) IN MRI 审中-公开
标题翻译： CONTROL特定吸收率（ASR）在MRI中的
公开(公告)号：EP1642151A1
公开(公告)日：2006-04-05
申请号：EP04743843.7
申请日：2004-06-30
申请人： Koninklijke Philips Electronics, N.V.
发明人： MORICH, Michael, A. , HARVEY, Paul, R. , ZHAI, Zhiyong , DEMEESTER, Gordon, D.
IPC分类号： G01R33/58
CPC分类号： G01R33/28 , A61B5/055 , G01R33/288 , G01R33/583
摘要： An MRI apparatus is provided. The apparatus includes a main magnet for generating a main magnetic field in an examination region, a plurality of gradient coils for generating gradient fields within the main field, an RF transmit coil for transmitting RF signals into the examination region and exciting magnetic resonance in a subject disposed therein in accordance with a plurality of imaging parameters, the transmitted RF signals having a SAR associated therewith, and a SAR processor for maintaining the transmitted RF signals below a prescribed SAR level.

6. 发明公开

EP2115484A2 SINUSOIDALLY RESONANT RADIO FREQUENCY VOLUME COILS FOR HIGH FIELD MAGNETIC RESONANCE APPLICATIONS 审中-公开
标题翻译： SINUSIOD谐振射频VOLUME线圈高场强应用
公开(公告)号：EP2115484A2
公开(公告)日：2009-11-11
申请号：EP08709918.0
申请日：2008-01-30
申请人： Koninklijke Philips Electronics N.V.
发明人： ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D.
IPC分类号： G01R33/34 , G01R33/36 , G01R33/422
CPC分类号： G01R33/34046 , G01R33/3635 , G01R33/422
摘要： A radio frequency coil assembly includes an annular conductor (20, 22) configured to support a sinusoidal electrical current distribution at a magnetic resonance frequency, and a radio frequency shield (30, 32, 34) shielding the annular conductor in at least one direction, the radio frequency shield including at least one oi (i) a cylindrical shield portion (30) surrounding a perimeter of the annular conductor, and (ii) a planar shield portion (32, 34) arranged generally parallel with the annular conductor. In a magnetic resonance scanner embodiment, a magnet generates a static magnetic field (B0), a magnetic field gradient system is configured to superimpose selected magnetic field gradients on the static magnetic field, and said radio frequency coil assembly is arranged with the annular conductor generally transverse to the static magnetic field (B0).

7. 发明公开

EP1882192A1 ELECTROMAGNETIC SHIELDING FOR HIGH FIELD MRI COILS 审中-公开
标题翻译：电磁屏蔽用于高场MRI线圈
公开(公告)号：EP1882192A1
公开(公告)日：2008-01-30
申请号：EP06727973.7
申请日：2006-04-19
申请人： Koninklijke Philips Electronics N.V.
发明人： LEUSSLER, Christoph, G. , LUEDEKE, Kai-michael , MORICH, Michael, A. , ZHAI, Zhiyong , DEMEESTER, Gordon, D.
IPC分类号： G01R33/422
CPC分类号： G01R33/422 , G01R33/3628
摘要： A radio frequency coil for magnetic resonance imaging includes an active coil member (70, 701, 170, 270) that defines an imaging volume. The active coil member has a first open end (74) with a first cross-sectional dimension (dactive). A shield coil member (72, 721, 722, 723, 724, 725, 172, 1722, 272) substantially surrounds the active coil member. The shield coil member has a constricted open end (88) arranged proximate to the first open end of the active coil member with a constricted cross-sectional dimension (dconst) that is less than the cross-sectional dimension (dShieid) of the shield coil member. In some embodiments, the radio frequency coil further includes an outer shield coil member (100) that is substantially larger than the shield coil member (72, 721, 722, 723, 724, 725, 172, 1722, 272), and surrounds both the active coil member and the shield coil member.

8. 发明公开

EP1859292A1 ULTRA-SHORT MRI BODY COIL 审中-公开
标题翻译：超短MRI体线圈
公开(公告)号：EP1859292A1
公开(公告)日：2007-11-28
申请号：EP06727650.1
申请日：2006-03-03
申请人： Koninklijke Philips Electronics N.V.
发明人： HOLLE, Eerke , ZHAI, Zhiyong , HARVEY, Paul, R.
IPC分类号： G01R33/3415
CPC分类号： G01R33/34046 , G01R33/3415
摘要： A magnetic resonance imaging system (10) utilizes an ultra-short RF body coil (36). The ultra-short body coil (36) is shorter than the mechanical equivalent birdcage coil by at least a factor of two. Such coil provides equivalent (B1) magnetic field uniformity, while conforming to SAR limitations.

9. 发明公开

EP1682914A1 B1 FIELD CONTROL IN MAGNETIC RESONANCE IMAGING 失效转让
标题翻译： B1-FELDSTEUERUNG BEI DER MAGNETRESONANZABBILDUNG
公开(公告)号：EP1682914A1
公开(公告)日：2006-07-26
申请号：EP04770206.3
申请日：2004-10-07
申请人： Koninklijke Philips Electronics N.V.
发明人： MORICH, Michael, A. , DEMEESTER, Gordon, D. , ZHAI, Zhiyong
IPC分类号： G01R33/32
CPC分类号： G01R33/583 , G01R33/4835
摘要： Multi-slice magnetic resonance imaging of a region of interest of an imaging subject (16) is performed using a radio frequency coil (40) arranged to generate a B1 magnetic field in the region of interest. One or more processors (44, 82, 88, 110) determine a B1 field value for each slice that is representative of the B1 field over a selected area of the slice, accounting for subject effects on the BI field, and determine an adjusted per-slice radio frequency excitation for each slice that adjusts the B1 field value for the slice to a selected value. A magnetic resonance imaging system (10, 44, 46, 50, 52) acquires magnetic resonance imaging data for each slice using the adjusted per-slice radio frequency excitation for that slice. A reconstruction processor (58) reconstructs the acquired magnetic resonance imaging data into a reconstructed image representation.
摘要翻译：使用布置成在感兴趣区域中产生B 1磁场的射频线圈（40）来执行成像对象（16）的感兴趣区域的多切片磁共振成像。一个或多个处理器（44,82,88,110）确定在切片的选定区域上代表B1场的每个切片的B1字段值，以考虑对BI字段的对象影响，并且确定每个对于将切片的B 1 SUB字段值调整为选定值的每个切片的 - 滑动射频激励。磁共振成像系统（10,44,46,50,52）使用针对该切片的调节的每切片射频激励来获取每个切片的磁共振成像数据。重建处理器（58）将所获取的磁共振成像数据重建为重建图像表示。

10. 发明公开

EP2591376A2 ROUTER AND COIL ARRAY FOR ULTRA HIGH FIELD MRI 有权转让
标题翻译：路由器和线圈结构超高场磁共振
公开(公告)号：EP2591376A2
公开(公告)日：2013-05-15
申请号：EP11748459.2
申请日：2011-07-04
申请人： Koninklijke Philips Electronics N.V.
发明人： MORICH, Michael, A. , ZHAI, Zhiyong , NIEMAN, Kevin, M. , WONG, Eddy, Y. P. , MALIK, Nabeel
IPC分类号： G01R33/3415
CPC分类号： G01R33/3642 , G01R33/3415 , G01R33/3607 , G01R33/3621 , G01R33/3678 , G01R33/5612
摘要： A router (60), for use with magnetic resonance systems (10), selectively routes unique excitation signals, generated by a multi-channel radio-frequency (RF) amplifier,over transmission lines (Tx) to any one of a plurality of connection panels (66) which each accepts at least one RF coil assembly having multiple coil elements (20). Each connection panel (66) includes transceiver ports (68) for connecting at least one conductor (22,24) of the coil elements(20) to a corresponding transceiver channel (T/R). The router (60) selectively routes magnetic resonance signals received by the conductors (22,24) from the transceiver channels (T/R) to a multi-channel RF receiver (41).

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式