-
公开(公告)号：US07319325B2
公开(公告)日：2008-01-15
申请号：US10560695
申请日：2004-06-01
IPC分类号： G01V3/00
CPC分类号： A61B5/0555 , A61B5/704 , A61B5/706 , A61B6/04 , A61B6/0407 , A61B6/0492 , G01R33/28 , G01R33/56375
摘要： An MRI apparatus is provided. The MRI apparatus includes a main magnet (12) for generating a main magnetic field in an examination region, a plurality of gradient magnets (16) for generating magnetic field gradients in the main magnetic field, a radio frequency coil (22) for transmitting radio frequency signals into the examination region and exciting magnetic resonance in a subject disposed therein, and a radio frequency coil for receiving the magnetic resonance signals from the subject. The MRI apparatus also includes subject support (52) for supporting the subject, a position controller (60) for controlling the position of the subject support within the examination region, and a position encoder (53) for directly measuring the position of the subject support.
摘要翻译： 提供MRI装置。 MRI装置包括用于在检查区域中产生主磁场的主磁体（12），用于在主磁场中产生磁场梯度的多个梯度磁体（16），用于发射无线电的射频线圈 频率信号进入检查区域并激励被设置在其中的被摄体的磁共振，以及射频线圈，用于接收来自被检体的磁共振信号。 MRI装置还包括用于支撑被检体的被检体支撑件（52），用于控制检查区域内的被检体支架的位置的位置控制器（60），以及用于直接测量被检体支架 。
-
公开(公告)号：US5786695A
公开(公告)日：1998-07-28
申请号：US822766
申请日：1997-03-21
IPC分类号： G01R33/3873 , G01V3/00
CPC分类号： G01R33/3873
摘要： The magnetic field assembly of a magnetic resonance imaging device includes an annular superconducting magnet (10) which is mounted within a toroidal vacuum vessel (24). Two cylindrical members (26, 46) define an annular gap (58). A shim set (60) for shimming the uniformity of the magnetic field is mounted in the gap (58). The shim set includes a plurality of shim trays (62), each of which defines a plurality of shim receiving pockets (64). A bottom wall (81) of each pocket is spaced from the cylindrical member (26) by side walls (76) and feet (78) to minimized heat flow. Shim tray covers (68) have flanges (90) and narrow contact surfaces (94) which are cammed against surfaces (61) of spacers (56) to press the cover on the tray and the tray feet against the cylinder (26) while minimizing heat flow through the spacers to the shims.
摘要翻译： 磁共振成像装置的磁场组件包括安装在环形真空容器（24）内的环形超导磁体（10）。 两个圆柱形构件（26,46）限定环形间隙（58）。 在间隙（58）中安装用于匀场磁场的匀场（60）。 垫片包括多个垫片托盘（62），每个垫片限定多个垫片容纳袋（64）。 每个口袋的底壁（81）通过侧壁（76）和脚（78）与圆柱形构件（26）间隔开，以最小化热流。 垫片覆盖物（68）具有凸缘（90）和窄接触表面（94），凸缘（90）与间隔件（56）的表面（61）相对，以将托盘上的盖板压靠在气缸（26）上， 通过间隔件的热量流到垫片。
-
公开(公告)号：US5349297A
公开(公告)日：1994-09-20
申请号：US80566
申请日：1993-06-21
IPC分类号： G01N33/38 , G01R33/34 , G01R33/3815 , G01R33/385 , G01R33/3875 , G01R33/421 , G01R33/422 , G01R33/20
CPC分类号： G01R33/3873 , G01R33/3815 , G01R33/385 , G01R33/3856 , G01R33/421 , G01R33/422 , G01R33/4215
摘要： The magnetic field assembly of a magnetic resonance imaging device includes an annular superconducting magnet (10) which is mounted within a toroidal vacuum vessel (24). A cylindrical member (26) defines a central bore (12) through which the superconducting magnets generate a uniform, static magnetic field. A cylindrical, dielectric former (46) is mounted in the bore displaced by an annular gap (58) from the cylindrical member. A shimset (60) for shimming the uniformity of the magnetic field is mounted in the gap (58). A radio frequency coil (32) is mounted within the cylindrical member defining a patient receiving examination region. An RF shield (34) is mounted around the exterior peripheral surface of the former. Primary gradient coils (50, 52, 54) are mounted around and potted to the exterior of the dielectric former around the RF shield. Gradient shield or secondary coils (74, 76, 78) are potted around an exterior of the cylindrical member within the vacuum chamber.
摘要翻译： 磁共振成像装置的磁场组件包括安装在环形真空容器（24）内的环形超导磁体（10）。 圆柱形构件（26）限定了中心孔（12），超导磁体通过该中心孔产生均匀的静态磁场。 一个圆柱形的电介质成形器（46）安装在由圆柱形构件的环形间隙（58）移位的孔中。 在间隙（58）中安装用于对磁场的均匀性进行匀场的垫片（60）。 射频线圈（32）安装在限定患者接收检查区域的圆柱形构件内。 RF屏蔽件（34）围绕前者的外周表面安装。 初级梯度线圈（50,52,54）围绕RF屏蔽件安装在电介质成形器的外部并封装在外部。 梯度屏蔽或次级线圈（74,76,78）围绕真空室内的圆柱形构件的外部进行灌封。
-
公开(公告)号：US07495441B2
公开(公告)日：2009-02-24
申请号：US10558768
申请日：2004-04-19
申请人： William H. Amor , Dennis K. Everett , Jerome S. Alden , Robert G. Henderson , Terrence M. Doyle , Ronald B. Sharpless , Gerardus B. J. Mulder , Gerardus N. Peeren
发明人： William H. Amor , Dennis K. Everett , Jerome S. Alden , Robert G. Henderson , Terrence M. Doyle , Ronald B. Sharpless , Gerardus B. J. Mulder , Gerardus N. Peeren
IPC分类号： G01V3/00
CPC分类号： G01R33/3873
摘要： A magnetic resonance imaging scanner includes a generally cylindrical main magnet assembly (10) that defines a cylinder axis (16). A first set of shims (60) are rigidly positioned inside the magnet assembly (10) at about a first distance (d1) relative to the cylinder axis (16). A second set of shims (62) are rigidly positioned inside the main magnet assembly (10) at about a second distance (d2) relative to the cylinder axis (16). The second distance (d2) is different from the first distance (d1). A generally cylindrical radio frequency coil (26) is arranged inside the main magnet assembly (10) at about a third distance (d3) relative to the cylinder axis (16). A plurality of gradient coils (20) are arranged inside the main magnet assembly (10) at about a fourth distance (d4) relative to the cylinder axis (16).
摘要翻译： 磁共振成像扫描仪包括限定气缸轴线（16）的大致圆柱形的主磁体组件（10）。 第一组垫片（60）相对于气缸轴线（16）以大约第一距离（d1）刚性地定位在磁体组件（10）的内部。 第二组垫片（62）相对于气缸轴线（16）以大约第二距离（d2）刚性地定位在主磁体组件（10）的内部。 第二距离（d2）与第一距离（d1）不同。 大致圆柱形的射频线圈（26）相对于气缸轴线（16）以大约第三距离（d3）布置在主磁体组件（10）的内部。 多个梯度线圈（20）相对于气缸轴线（16）以大约第四距离（d4）布置在主磁体组件（10）的内部。
-
公开(公告)号：US4989849A
公开(公告)日：1991-02-05
申请号：US275577
申请日：1988-11-23
申请人： Anton Z. Zupancic , William H. Amor
发明人： Anton Z. Zupancic , William H. Amor
CPC分类号： A61B6/0421 , A61G13/12 , A61G13/121 , A61G13/122
摘要： A headrest assembly for a patient receiving couch includes an integrally formed support body and a structure for detachably securing the support body to an associated patient receiving couch. The support body includes a torso receiving region, a neck supporting region and a head receiving region. The securing structure includes a pair of side securing member for positioning a pair of sides of the support body in relation to the patient receiving couch.
摘要翻译： 用于患者接收沙发的头枕组件包括整体形成的支撑体和用于将支撑体可拆卸地固定到相关联的患者接收沙发的结构。 支撑体包括躯干接收区域，颈部支撑区域和头部接收区域。 固定结构包括一对侧固定构件，用于相对于病人接收沙发座定位支撑体的一对侧面。
-
公开(公告)号：US4658408A
公开(公告)日：1987-04-14
申请号：US707732
申请日：1985-03-04
申请人： William H. Amor , Robert E. Levar
发明人： William H. Amor , Robert E. Levar
摘要： A computed tomography scanner having a brake which is automatically engaged in the event dynamic motor braking fails to stop scanner motion. Within a predetermined range of motion two brake mechanisms are employed. One has a brake shoe to contact a braking surface and stop rotation of the scanner in one direction and a second has a second brake shoe which stops rotation in an opposite direction. The brake shoes are engaged and retracted by a cam surface which as the scanner rotates, moves into contact with one of two bearings connected to associated ones of the brake shoes.
摘要翻译： 具有自动接合动态电动机制动的制动器的计算机断层摄影扫描器不能停止扫描仪运动。 在预定的运动范围内，采用两个制动机构。 一个制动蹄与制动表面接触并且在一个方向上停止扫描器的旋转，而第二制动蹄具有在相反方向上停止旋转的第二制动蹄。 刹车片由扫描仪旋转的凸轮表面接合和收回，该凸轮表面与连接到相关的制动蹄的两个轴承中的一个接触。
-
公开(公告)号：US5041788A
公开(公告)日：1991-08-20
申请号：US391426
申请日：1989-08-09
CPC分类号： G01R33/34046 , G01R33/3628 , G01R33/34007 , G01R33/3678 , G01R33/3685
摘要： Main field magnets (10) create a static magnetic field through an examination region that is surrounding a resonator coil assembly (22). The resonator coil assembly includes a dielectric cylinder (60) on which a plurality of foil antenna or coil segments (30) are mounted. Pairs of adjustable tuning and matching capacitors (28, 34) are mounted on opposite sides of the cylinder in electric connection with the foil segments. The tuning capacitors are connected with a first pair of driven gears (90) disposed on one side of an annular reinforcing ring (64) and the matching capacitors are connected with a second pair of driven gears (100) mounted on the other side of the reinforcing ring. First and second ring gears (66, 68) are mounted at three points on opposite sides of the reinforcing ring each at its respective drive gear and pair of driven gears. In this manner, rotation of the appropriate drive gear rotates the respective ring gear about the cylinder causing concurrent rotation of the associated driven gears such that the associated pair of capacitors are adjusted concurrently by the same amount. Optionally, keeper assemblies (110) may be connected to the annular reinforcing ring to prevent circumferential deflection of the ring gears.
摘要翻译： 主场磁体（10）通过围绕谐振器线圈组件（22）的检查区产生静态磁场。 谐振器线圈组件包括介质筒（60），多个箔天线或线圈段（30）安装在该介质筒上。 一对可调节调谐和匹配电容器（28,34）安装在与箔片段电连接的气缸的相对侧上。 调谐电容器与设置在环形加强环（64）的一侧上的第一对从动齿轮（90）连接，并且匹配电容器与安装在第二对驱动齿轮的另一侧上的第二对从动齿轮（100）连接 加强环。 第一和第二环形齿轮（66,68）在加强环的相对侧的三个位置分别安装在其各自的驱动齿轮和一对从动齿轮上。 以这种方式，适当的驱动齿轮的旋转使相应的环形齿轮围绕气缸旋转，引起相关联的从动齿轮的同时旋转，使得相关的一对电容器被同时调整相同的量。 可选地，保持器组件（110）可以连接到环形加强环，以防止环形齿轮的周向偏转。
-
公开(公告)号：US4197464A
公开(公告)日：1980-04-08
申请号：US855691
申请日：1977-11-29
申请人： William H. Amor
发明人： William H. Amor
CPC分类号： A61B6/04
摘要： An X-ray table comprising a body having end, front and rear side members formed of inside and outside skin members having parts thereof spaced from one another and connected together by reinforcing members welded to the skin members and a method of making such a table. According to the method the side members are constructed as subassemblies with the inside and outside skin members of the end and front sides merely welded at their upper edges. Subsequently the vertical side members of the table body are assembled in a fixture without stress in the sheet metal parts. The outside members are then welded together at the junctures thereof. Finally the inside skin members of the end side members are welded to the reinforcing members previously welded to the end outside skin members and the front inside skin members is welded to the reinforcing members.
摘要翻译： 一种X射线台，包括具有由内外表皮构件形成的端部，前侧和后侧构件的主体，所述外侧构件具有彼此间隔开的部分，并且通过焊接到皮肤构件的加强构件连接在一起，以及制造这种桌子的方法。 根据该方法，侧部构件被构造为子组件，其端部和前侧的内部和外部外部构件仅在其上边缘处焊接。 随后，桌子主体的垂直侧面部件在金属零件中没有应力地组装在夹具中。 然后将外部构件在其接合处焊接在一起。 最后，端侧构件的内部皮肤构件被焊接到先前焊接到端部外部皮肤构件的加强构件，并且前部内部皮肤构件焊接到加强构件。
-
公开(公告)号：US4736075A
公开(公告)日：1988-04-05
申请号：US4648
申请日：1987-01-20
申请人： William H. Amor , Robert E. Levar
发明人： William H. Amor , Robert E. Levar
摘要： A computed tomography scanner having a brake which is automatically engaged in the event dynamic motor braking fails to stop scanner motion. Within a predetermined range of motion two brake mechanisms are employed. One has a brake shoe to contact a braking surface and stop rotation of the scanner in one direction and a second has a second brake shoe which stops rotation in an opposite direction. The brake shoes are engaged and retracted by a cam surface which as the scanner rotates, moves into contact with one of two bearings connected to associated ones of the brake shoes.
摘要翻译： 具有自动接合动态电动机制动的制动器的计算机断层摄影扫描器不能停止扫描仪运动。 在预定的运动范围内，采用两个制动机构。 一个制动蹄与制动表面接触并且在一个方向上停止扫描器的旋转，而第二制动蹄具有在相反方向上停止旋转的第二制动蹄。 刹车片由扫描仪旋转的凸轮表面接合和收回，该凸轮表面与连接到相关的制动蹄的两个轴承中的一个接触。
-
公开(公告)号：US4723259A
公开(公告)日：1988-02-02
申请号：US668426
申请日：1984-11-05
CPC分类号： A61B6/035 , A61B6/032 , A61B6/4275 , A61B6/56 , H02K41/031 , H02K7/14
摘要： A computed tomography motor forming an integral part of the scanning apparatus. Motor laminations are mounted to a stationary computed tomography gantry while motor magnets are mounted directly and onto the cylindrical surface of a rotating race member opposite the field the field generating means to rotate with a rotatable computed tomography frame. Energization of the motor laminations cause relative movement between frame and gantry thereby causing an X-ray tube supported by the frame to rotate with the respect to a subject of interest.
摘要翻译： 形成扫描装置的组成部分的计算机断层摄影电动机。 电动机叠片安装到静止的计算机断层摄影台架上，而电动机磁体直接安装在与场发生装置的场相反的旋转座圈构件的圆柱形表面上，可旋转的计算机断层摄影框架旋转。 电动机叠片的通电导致框架和机架之间的相对运动，从而使得由框架支撑的X射线管相对于感兴趣的对象旋转。
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.024 秒)
