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1. 发明授权

US06429761B2 Mold for bonding MRI pole piece tiles and method of making the mold 有权
标题翻译：用于粘结MRI极片的模具和制造模具的方法
公开(公告)号：US06429761B2
公开(公告)日：2002-08-06
申请号：US09738838
申请日：2000-12-18
申请人： Evangelos T. Laskaris , William D. Barber , Johannes M van Oort , Bulent Aksel , Paul S. Thompson , Michele D. Ogle
发明人： Evangelos T. Laskaris , William D. Barber , Johannes M van Oort , Bulent Aksel , Paul S. Thompson , Michele D. Ogle
IPC分类号： H01F500
CPC分类号： H01F7/0278 , G01R33/383 , Y10S29/001 , Y10T29/4902 , Y10T29/49075 , Y10T29/49078
摘要： A laminate tile pole piece for an MRI, a method and a mold for manufacturing laminate tile metal pole pieces for an MRI. Each laminate tile has a trapezoidal or annular sector shape. The trapezoidal shape allows the tiles to be attached side by side to form a multiple concentric annular array pole piece without using oddly shaped edge filler tiles needed to fill a circular pole piece with square tiles. The pole piece is made by placing a plurality of tiles into a mold and filling the mold with an adhesive substance to bind the plurality of tiles into a unitary tile body. The unitary tile body is then removed from the mold and attached to a pole piece base to form the pole piece. The mold cavity surface preferably has a non-uniform contour. The bottom surface of the unitary tile body forms a substantially inverse contour of the mold cavity surface contour.
摘要翻译：用于MRI的叠层瓦片极片，用于制造用于MRI的层压瓦片金属极片的方法和模具。每个层压砖具有梯形或环形扇形。梯形形状允许瓦片并排连接以形成多个同心环形阵列极片，而不使用填充具有方形瓦片的圆形极片所需的奇怪形状的边缘填充瓦。极片通过将多个瓦片放置在模具中并用粘合剂物质填充模具来制造，以将多个瓦片粘合成整体瓦片体。然后将单一瓦片体从模具中取出并附接到极片基座以形成极片。模腔表面优选具有不均匀的轮廓。整体瓦片体的底面形成模腔表面轮廓的基本上相反的轮廓。

2. 发明授权

US06259252B1 Laminate tile pole piece for an MRI, a method manufacturing the pole piece and a mold bonding pole piece tiles 失效
标题翻译：用于MRI的层叠瓦片极片，制造极片的方法和模具接合极片瓦片
公开(公告)号：US06259252B1
公开(公告)日：2001-07-10
申请号：US09198507
申请日：1998-11-24
申请人： Evangelos T. Laskaris , William D. Barber , Johannes M van Oort , Bulent Aksel , Paul S. Thompson , Michele D. Ogle
发明人： Evangelos T. Laskaris , William D. Barber , Johannes M van Oort , Bulent Aksel , Paul S. Thompson , Michele D. Ogle
IPC分类号： G01V300
CPC分类号： H01F7/0278 , G01R33/383 , Y10S29/001 , Y10T29/4902 , Y10T29/49075 , Y10T29/49078
摘要： A laminate tile pole piece for an MRI. Each laminate tile has a trapezoidal or annular sector shape. The trapezoidal shape allows the tiles to be attached side by side to form a multiple concentric annular array pole piece without using oddly shaped edge filler tiles needed to fill a circular pole piece with square tiles. The pole piece is made by placing a plurality of tiles into a mold and filling the mold with an adhesive substance to bind the plurality of tiles into a unitary tile body. The unitary tile body is then removed from the mold and attached to a pole piece base to form the pole piece. The mold cavity surface preferably has a non-uniform contour. The bottom surface of the unitary tile body forms a substantially inverse contour of the mold cavity surface contour.
摘要翻译：用于MRI的层压瓦片极片。每个层压砖具有梯形或环形扇形。梯形形状允许瓦片并排连接以形成多个同心环形阵列极片，而不使用填充具有方形瓦片的圆形极片所需的奇怪形状的边缘填充瓦。极片通过将多个瓦片放置在模具中并用粘合剂物质填充模具来制造，以将多个瓦片粘合成整体瓦片体。然后将单一瓦片体从模具中取出并附接到极片基座以形成极片。模腔表面优选具有不均匀的轮廓。整体瓦片体的底面形成模腔表面轮廓的基本上相反的轮廓。

3. 发明授权

US06694602B2 Method of making a pole piece for an MRI 失效
标题翻译：制作磁极片的方法
公开(公告)号：US06694602B2
公开(公告)日：2004-02-24
申请号：US09738856
申请日：2000-12-18
申请人： Evangelos T. Laskaris , William D. Barber , Bulent Aksel , Paul S. Thompson , Michele D. Ogle
发明人： Evangelos T. Laskaris , William D. Barber , Bulent Aksel , Paul S. Thompson , Michele D. Ogle
IPC分类号： H01F706
CPC分类号： H01F7/0278 , G01R33/383 , Y10S29/001 , Y10T29/4902 , Y10T29/49075 , Y10T29/49078
摘要： A method is presented for manufacturing laminate tile metal pole pieces for an MRI. Each laminate tile has a trapezoidal or annular sector shape. The trapezoidal shape allows the tiles to be attached side by side to form a multiple concentric annular array pole piece without using oddly shaped edge filler tiles needed to fill a circular pole piece with square tiles. The pole piece is made by placing a plurality of tiles into a mold and filling the mold with an adhesive substance to bind the plurality of tiles into a unitary tile body. The unitary tile body is then removed from the mold and attached to a pole piece base to form the pole piece. The mold cavity surface preferably has a non-uniform contour. The bottom surface of the unitary tile body forms a substantially inverse contour of the mold cavity surface contour.
摘要翻译：提出了一种用于制造用于MRI的层压瓦片金属极片的方法。每个层压砖具有梯形或环形扇形。梯形形状允许瓦片并排连接以形成多个同心环形阵列极片，而不使用填充具有方形瓦片的圆形极片所需的奇怪形状的边缘填充瓦。极片通过将多个瓦片放置在模具中并用粘合剂物质填充模具来制造，以将多个瓦片粘合成整体瓦片体。然后将单一瓦片体从模具中取出并附接到极片基座以形成极片。模腔表面优选具有不均匀的轮廓。整体瓦片体的底面形成模腔表面轮廓的基本上相反的轮廓。

4. 发明授权

US6150819A Laminate tiles for an MRI system and method and apparatus for manufacturing the laminate tiles 有权
标题翻译：用于MRI系统的层叠瓦片以及用于制造层压瓦片的方法和装置
公开(公告)号：US6150819A
公开(公告)日：2000-11-21
申请号：US198510
申请日：1998-11-24
申请人： Evangelos T. Laskaris , William D. Barber , Bulent Aksel , Richard A. Ranze
发明人： Evangelos T. Laskaris , William D. Barber , Bulent Aksel , Richard A. Ranze
IPC分类号： A61B5/055 , G01R33/383 , H01F7/02 , H01F7/20 , H01F41/02 , G01V3/00
CPC分类号： G01R33/383 , H01F41/0226 , H01F7/0278 , H01F7/20 , Y10T29/49078
摘要： A laminate tile pole piece for an MRI, a method and an apparatus for manufacturing laminate tile metal pole pieces for an MRI. Each laminate tile has a trapezoidal or annular sector shape. The trapezoidal shape allows the tiles to be attached side by side to form a multiple concentric ring pole piece without using oddly shaped edge filler tiles needed to fill a circular pole piece with square tiles. The laminate tiles are formed by unwinding a metal ribbon, guiding the ribbon through an adhesive bath, winding the ribbon on a polygonal bobbin, such as a rectangular bobbin, to form a coil with at least one flat side, removing the coil from the bobbin, cutting the coil into laminate bars and shaping the laminate bars into trapezoidal or annular sector shaped laminate tiles. The apparatus contains an adhesive bath, a polygonal shaped bobbin, bobbin side plates for guiding the ribbon onto the bobbin and pressure plates for controlling the thickness of the coil. The apparatus also contains a cutting tool for cutting the coil into laminate bars after the coil is removed from the bobbin and a water jet to shape the laminate bars into trapezoidal or annular sector shaped laminate tiles.
摘要翻译：用于MRI的叠层瓦片极片，用于制造用于MRI的层压瓦片金属极片的方法和装置。每个层压砖具有梯形或环形扇形。梯形形状允许瓦片并排连接以形成多个同心圆极片，而不使用填充具有方形瓦片的圆形极片所需的奇怪形状的边缘填充瓦。通过展开金属带来形成层压瓦片，通过粘合剂浴引导带状物，将带卷绕在诸如矩形线轴的多边形线轴上以形成具有至少一个平坦侧面的线圈，将线圈从线轴将线圈切割成层压棒，并将层压棒成型为梯形或环形扇形形状的层压瓦片。该装置包括粘合剂浴，多边形线轴，用于将带引导到线轴上的线轴侧板和用于控制线圈厚度的压板。该设备还包括一个切割工具，用于在将线圈从筒管上取下并将水射流成形为梯形或环形扇形层压瓦片之后将线圈切割成层压棒。

5. 发明申请

US20100277170A1 HEAT PIPE COOLED SUERCONDUCTING MAGNETS WITH CERAMIC COIL FORMS 有权
标题翻译：热管冷却带陶瓷线圈的磁铁
公开(公告)号：US20100277170A1
公开(公告)日：2010-11-04
申请号：US12268205
申请日：2008-11-10
申请人： Xianrui Huang , Bulent Aksel , Kathleen M. Amm , Evangelos T. Laskaris , Ernst W. Stautner , Paul S. Thompson , Anbo Wu , Minfeng Xu , Yan Zhao
发明人： Xianrui Huang , Bulent Aksel , Kathleen M. Amm , Evangelos T. Laskaris , Ernst W. Stautner , Paul S. Thompson , Anbo Wu , Minfeng Xu , Yan Zhao
IPC分类号： G01R33/48 , G01R33/44
CPC分类号： G01R33/3815 , G01R33/3802 , G01R33/3804
摘要： A system and method for a magnetic resonance (MR) imaging system includes a coil form, at least one magnet positioned about the coil form and configured to generate a magnetic field, at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field, and a heat pipe thermally connected to the coil form and having a cryogen therein. The MR imaging system also includes a cryocooler connected to the heat pipe to cool the heat pipe and the cryogen, wherein the coil form is comprised of a thermally conductive material in which eddy currents are substantially reduced during operation of the at least one gradient coil. The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
摘要翻译：用于磁共振（MR）成像系统的系统和方法包括线圈形式，围绕线圈形状定位并被配置为产生磁场的至少一个磁体，至少一个梯度线圈，用于操纵由至少一个通过梯度场的一个磁体，以及热连接到线圈形式并且在其中具有冷冻剂的热管。 MR成像系统还包括连接到热管以冷却热管和冷冻剂的低温冷却器，其中线圈形式由导热材料组成，其中涡流在至少一个梯度线圈的操作期间显着减小。已经根据优选实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代方案和修改是可能的并且在所附权利要求的范围内。

6. 发明授权

US07852079B2 Apparatus for low AC loss thermal shielding and method of making same 有权
标题翻译：低交流损耗热屏蔽装置及其制作方法
公开(公告)号：US07852079B2
公开(公告)日：2010-12-14
申请号：US11461544
申请日：2006-08-01
申请人： Xianrui Huang , Evangelos T. Laskaris , Paul S. Thompson , Bulent Aksel
发明人： Xianrui Huang , Evangelos T. Laskaris , Paul S. Thompson , Bulent Aksel
IPC分类号： G01V3/00 , H01F7/00 , H01F1/00
CPC分类号： G01R33/3815 , G01R33/3804
摘要： A apparatus for low AC loss thermal shielding includes a plurality of thermally conducting fibers positioned along a desired direction of heat conduction. The fibers are electrically insulated from each other. The fibers are bonded together with a matrix, and a thermal link connects the bonded fibers to a cryogenic cold head.
摘要翻译：用于低AC损耗热屏蔽的装置包括沿期望的热传导方向定位的多个导热纤维。纤维彼此电绝缘。纤维与基体结合在一起，并且热连接将结合的纤维连接到低温冷头。

7. 发明授权

US08085047B2 Heat pipe cooled suerconducting magnets with ceramic coil forms 有权
标题翻译：热管冷却采用陶瓷线圈形式的导磁体
公开(公告)号：US08085047B2
公开(公告)日：2011-12-27
申请号：US12268205
申请日：2008-11-10
申请人： Xianrui Huang , Bulent Aksel , Kathleen M. Amm , Evangelos T. Laskaris , Ernst W. Stautner , Paul S. Thompson , Anbo Wu , Minfeng Xu , Yan Zhao
发明人： Xianrui Huang , Bulent Aksel , Kathleen M. Amm , Evangelos T. Laskaris , Ernst W. Stautner , Paul S. Thompson , Anbo Wu , Minfeng Xu , Yan Zhao
IPC分类号： G01V3/00
CPC分类号： G01R33/3815 , G01R33/3802 , G01R33/3804
摘要： A system and method for a magnetic resonance (MR) imaging system includes a coil form, at least one magnet positioned about the coil form and configured to generate a magnetic field, at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field, and a heat pipe thermally connected to the coil form and having a cryogen therein. The MR imaging system also includes a cryocooler connected to the heat pipe to cool the heat pipe and the cryogen, wherein the coil form is comprised of a thermally conductive material in which eddy currents are substantially reduced during operation of the at least one gradient coil. The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
摘要翻译：用于磁共振（MR）成像系统的系统和方法包括线圈形式，围绕线圈形状定位并被配置为产生磁场的至少一个磁体，至少一个梯度线圈，用于操纵由至少一个通过梯度场的一个磁体，以及热连接到线圈形式并且在其中具有冷冻剂的热管。 MR成像系统还包括连接到热管以冷却热管和冷冻剂的低温冷却器，其中线圈形式由导热材料组成，其中涡流在至少一个梯度线圈的操作期间显着减小。已经根据优选实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代方案和修改是可能的并且在所附权利要求的范围内。

8. 发明申请

US20100237868A1 APPARATUS FOR LOW AC LOSS THERMAL SHIELDING AND METHOD OF MAKING SAME 有权
标题翻译：低交流损失热屏蔽装置及其制造方法
公开(公告)号：US20100237868A1
公开(公告)日：2010-09-23
申请号：US11461544
申请日：2006-08-01
申请人： Xianrui Huang , Evangelos T. Laskaris , Paul S. Thompson , Bulent Aksel
发明人： Xianrui Huang , Evangelos T. Laskaris , Paul S. Thompson , Bulent Aksel
IPC分类号： G01R33/44 , F25B19/00 , B29C70/40
CPC分类号： G01R33/3815 , G01R33/3804
摘要： A apparatus for low AC loss thermal shielding includes a plurality of thermally conducting fibers positioned along a desired direction of heat conduction. The fibers are electrically insulated from each other. The fibers are bonded together with a matrix, and a thermal link connects the bonded fibers to a cryogenic cold head.
摘要翻译：用于低AC损耗热屏蔽的装置包括沿期望的热传导方向定位的多个导热纤维。纤维彼此电绝缘。纤维与基体结合在一起，并且热连接将结合的纤维连接到低温冷头。

9. 发明授权

US07449889B1 Heat pipe cooled superconducting magnets with ceramic coil forms 有权
标题翻译：具有陶瓷线圈形式的热管冷却超导磁体
公开(公告)号：US07449889B1
公开(公告)日：2008-11-11
申请号：US11768016
申请日：2007-06-25
申请人： Xianrui Huang , Bulent Aksel , Kathleen M. Amm , Evangelos T. Laskaris , Ernst W. Stautner , Paul S. Thompson , Anbo Wu , Minfeng Xu , Yan Zhao
发明人： Xianrui Huang , Bulent Aksel , Kathleen M. Amm , Evangelos T. Laskaris , Ernst W. Stautner , Paul S. Thompson , Anbo Wu , Minfeng Xu , Yan Zhao
IPC分类号： G01V3/00
CPC分类号： G01R33/3815 , G01R33/3802 , G01R33/3804
摘要： A system and method for a magnetic resonance (MR) imaging system includes a coil form, at least one magnet positioned about the coil form and configured to generate a magnetic field, at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field, and a heat pipe thermally connected to the coil form and having a cryogen therein. The MR imaging system also includes a cryocooler connected to the heat pipe to cool the heat pipe and the cryogen, wherein the coil form is comprised of a thermally conductive material in which eddy currents are substantially reduced during operation of the at least one gradient coil. The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
摘要翻译：用于磁共振（MR）成像系统的系统和方法包括线圈形式，围绕线圈形状定位并被配置为产生磁场的至少一个磁体，至少一个梯度线圈，用于操纵由至少一个通过梯度场的一个磁体，以及热连接到线圈形式并且在其中具有冷冻剂的热管。 MR成像系统还包括连接到热管以冷却热管和冷冻剂的低温冷却器，其中线圈形式由导热材料组成，其中涡流在至少一个梯度线圈的操作期间显着减小。已经根据优选实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代方案和修改是可能的并且在所附权利要求的范围内。

10. 发明授权

US5568102A Closed superconductive magnet with homogeneous imaging volume 失效
标题翻译：封闭的超导磁体具有均匀的成像体积
公开(公告)号：US5568102A
公开(公告)日：1996-10-22
申请号：US603520
申请日：1996-02-20
申请人： Bizhan Dorri , Evangelos T. Laskaris , Michele D. Ogle
发明人： Bizhan Dorri , Evangelos T. Laskaris , Michele D. Ogle
IPC分类号： G01R33/3815 , G01R33/3873 , H01F6/06 , G01V3/00
CPC分类号： G01R33/3815 , G01R33/3873
摘要： A closed magnetic resonance imaging (MRI) magnet has a single superconductive coil assembly including a toroidal-shaped coil housing containing a pair of superconductive main coils and at least one additional superconductive main coil. A pair of generally annular-shaped permanent magnet arrays is spaced radially inward and apart from the superconductive main coils. The permanent magnet arrays allow the design of a shorter MRI magnet because the permanent magnet arrays overcome the gross magnetic field distortions in the imaging volume of the magnet (created by removing some of the additional longitudinally-outermost superconductive main coils, otherwise used in the magnet, to make the magnet shorter) to produce a magnetic field of high uniformity within the imaging volume.
摘要翻译：闭合磁共振成像（MRI）磁体具有单个超导线圈组件，其包括包含一对超导主线圈和至少一个额外的超导主线圈的环形线圈壳体。一对大致环形的永磁体阵列径向向内并与超导主线圈隔开。永磁体阵列允许设计较短的MRI磁体，因为永久磁体阵列克服了磁体成像体积中的总磁场失真（通过去除一些附加的纵向最外面的超导主线圈而产生，否则在磁体中使用，以使磁体更短）以在成像体积内产生高均匀性的磁场。

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