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1. 发明授权

US06375147B1 Vibration isolation apparatus for MR imaging system 失效
标题翻译： MR成像系统的隔振装置
公开(公告)号：US06375147B1
公开(公告)日：2002-04-23
申请号：US09394853
申请日：1999-09-13
申请人： Michael J. Radziun , Scott T. Mansell , David E. Dean , Dewain A. Purgill
发明人： Michael J. Radziun , Scott T. Mansell , David E. Dean , Dewain A. Purgill
IPC分类号： F16M100
CPC分类号： G01R33/3854
摘要： Apparatus which provides a barrier for vibrational energy between an MR imaging system and an associated horizontal support surface includes a stiff platform of substantial mass, which is disposed to carry the entire weight of the MR imaging system. The apparatus further includes a number of vibration isolation elements positioned to support the platform and the MR imaging system upon the horizontal support surface. Each of the isolation elements comprises an enclosure containing pressurized air which is disposed to dampen vibrations, in order to oppose the transmission of vibrations between the platform and the support surface. An air pressure regulator is coupled to respective isolation elements to maintain specified air pressure levels therein, in order to support the platform in selected spaced-apart orientation with respect to the horizontal support surface.
摘要翻译：在MR成像系统和相关联的水平支撑表面之间提供振动能量屏障的装置包括大体积的坚硬平台，其被设置成承载MR成像系统的整个重量。该装置还包括多个隔离元件，其被定位成在水平支撑表面上支撑平台和MR成像系统。每个隔离元件包括包含加压空气的外壳，该加压空气设置成抑制振动，以便抵抗平台和支撑表面之间的振动传递。空气压力调节器联接到相应的隔离元件以在其中保持指定的空气压力水平，以便相对于水平支撑表面以选定的间隔方向支撑平台。

2. 发明授权

US06252404B1 Reduced noise RF coil apparatus for MR imaging system 失效
标题翻译：用于MR成像系统的降噪RF线圈装置
公开(公告)号：US06252404B1
公开(公告)日：2001-06-26
申请号：US09376543
申请日：1999-08-18
申请人： Dewain A. Purgill , Michael J. Radziun , David E. Dean
发明人： Dewain A. Purgill , Michael J. Radziun , David E. Dean
IPC分类号： G01V300
CPC分类号： G01R33/34007 , G01R33/34046 , G01R33/3854
摘要： In an MR imaging system provided with a main magnet having a bore and with a gradient coil assembly located within the bore, RF coil apparatus is provided for reducing noise in the imaging volume of the MR system. The RF coil apparatus comprises a tubular RF coil form provided with an inner surface, an RF coil attached to the inner surface of the RF coil form, and mounting structure extending between the RF coil form and gradient coil assembly. The mounting structure supports the RF coil and RF coil form upon the gradient coil assembly, in spaced-apart relationship therewith. The apparatus further compises an inner tubular member which is selectively constructed to oppose transmission of acoustic signals from the RF coil to the imaging volume. The inner tubular member is fixably supported within the main magnet bore so as to be in selected spaced-apart relationship with the RF coil and RF coil form, the inner tubular member substantially enclosing a specified portion of the volume of the bore, which comprises the MR system imaging volume.
摘要翻译：在设置有具有孔并具有位于孔内的梯度线圈组件的主磁体的MR成像系统中，提供RF线圈装置以减少MR系统的成像体积中的噪声。 RF线圈装置包括设置有内表面的管状RF线圈形式，附接到RF线圈形式的内表面的RF线圈以及在RF线圈形式和梯形线圈组件之间延伸的安装结构。安装结构在梯度线圈组件上以与其间隔的关系支撑RF线圈和RF线圈形式。该装置进一步组合内部管状构件，该内部管状构件被选择性地构造成抵抗从RF线圈到成像体积的声学信号的传输。内部管状构件可固定地支撑在主磁体孔内，以便与RF线圈和RF线圈形式处于选定的间隔关系，内部管状构件基本上包围孔的体积的特定部分，其包括 MR系统成像体积。

3. 发明授权

US6160399A Apparatus for supporting MR gradient coil assembly 失效
标题翻译：用于支撑MR梯度线圈组件的装置
公开(公告)号：US6160399A
公开(公告)日：2000-12-12
申请号：US348731
申请日：1999-07-06
申请人： Michael J. Radziun , David E. Dean , Scott T. Mansell
发明人： Michael J. Radziun , David E. Dean , Scott T. Mansell
IPC分类号： G01R33/385 , G01V3/00
CPC分类号： G01R33/385
摘要： In an MR system, a mounting assembly is provided at each end of the bore of the main magnet for supporting a cylindrical gradient coil assembly within the bore. Each mounting assembly comprises first and second brackets, the first bracket being provided with a concave bearing surface having a specified curvature. The first bracket is fixably joined to the main magnet proximate to the lower side of the bore, and the second bracket is provided with a convex bearing surface which is selectively similar to the curvature of the concave bearing surface of the first bracket. The second bracket is attached to a lower portion of the gradient coil, so that the convex bearing surface extends longitudinally outward from the gradient coil assembly. A vibration attenuator is positioned between the convex and concave bearing surfaces of each mounting assembly, the vibration attenuator acting to transmit a static force between the two bearing surfaces to support the gradient coil assembly within the bore. At the same time, the vibration attenuator acts to oppose transmission of mechanical vibrations from the gradient coil assembly to the main magnet. The vibration attenuator comprises first and second pads formed of elastomeric vibration isolation material, which are joined together in a stacked interlocking relationship.
摘要翻译：在MR系统中，在主磁体的孔的每个端部处提供安装组件，用于在孔内支撑圆柱形梯度线圈组件。每个安装组件包括第一和第二支架，第一支架设置有具有特定曲率的凹形支承表面。第一支架固定地接合到靠近孔的下侧的主磁体，并且第二支架设置有凸起的支承表面，凸起的支承表面选择性地类似于第一支架的凹入的支承表面的曲率。第二支架附接到梯度线圈的下部，使得凸起支承表面从梯度线圈组件纵向向外延伸。振动衰减器位于每个安装组件的凸形和凹形支承表面之间，该振动衰减器用于在两个支承表面之间传递静态力，以将该梯度线圈组件支撑在孔内。同时，振动衰减器用于将梯度线圈组件的机械振动传递到主磁体。振动衰减器包括由弹性体隔振材料形成的第一和第二垫，它们以堆叠的互锁关系连接在一起。

4. 发明授权

US06433549B1 MR bridge support 失效
标题翻译： MR桥梁支持
公开(公告)号：US06433549B1
公开(公告)日：2002-08-13
申请号：US09990667
申请日：2001-11-21
申请人： David E. Dean , David Glenn Lee , Bruce D. Collick , Richard Scott Hinks , Michael J. Radziun , Scott T. Mansell , Donald Elroy Kosak , John Edward Lorbiecki
发明人： David E. Dean , David Glenn Lee , Bruce D. Collick , Richard Scott Hinks , Michael J. Radziun , Scott T. Mansell , Donald Elroy Kosak , John Edward Lorbiecki
IPC分类号： G01V300
CPC分类号： A61B5/0555
摘要： An apparatus for supporting a patient support bridge member in an MR system where a first end of the bridge is supported by an upright support member on a first side of an MR imaging bore and the bridge extends through the bore so that a second end of the bridge extends out a second side of the bore, the apparatus including a bracket mounted to an MR main magnet on the second side of the bore and extending upwardly to contact and support the bridge there above.
摘要翻译：一种用于在MR系统中支撑患者支撑桥构件的装置，其中所述桥的第一端由MR成像孔的第一侧上的直立支撑构件支撑，并且所述桥延伸穿过所述孔，使得所述桥的第二端桥延伸出孔的第二侧，该装置包括安装在孔的第二侧上的MR主磁体的支架，并向上延伸以接触并支撑其上方的桥。

5. 发明授权

US06414489B1 Apparatus for reducing acoustic noise in an MR imaging system 失效
标题翻译：用于降低MR成像系统中的声学噪声的装置
公开(公告)号：US06414489B1
公开(公告)日：2002-07-02
申请号：US09465256
申请日：1999-12-18
申请人： David E. Dean , Michael J. Radziun , Scott T. Mansell
发明人： David E. Dean , Michael J. Radziun , Scott T. Mansell
IPC分类号： G01V300
CPC分类号： G01R33/3854
摘要： Apparatus is provided for reducing the level of acoustic noise or energy which is received by an imaging subject located within the bore of an MR imaging system. The apparatus comprises a bridge fixed within the bore to support the subject during MR data acquisition, and further comprises a curved frame, usefully formed of fiberglass, which is removably insertable in the bore for placement upon the bridge. The frame, when in place upon the bridge, defines a space within the bore which is disposed to receive the imaging subject. The frame is covered by a layer of material, such as open cell foam, which is capable of absorbing substantial amounts of acoustic energy present in the bore. At the same time, the material is highly transmissive to RF signals required for MR data acquisition and avoids spurious RF signal generation which would add noise to MR data.
摘要翻译：提供了用于降低由位于MR成像系统的孔内的成像对象接收的声学噪声或能量的装置。该装置包括固定在孔内的桥，以在MR数据采集期间支撑被检者，并且还包括有效地由玻璃纤维形成的弯曲框架，其可移除地插入孔中以放置在桥上。当框架在桥上的适当位置时，框架限定孔内的空间，该空间被设置成接纳成像对象。框架被一层材料覆盖，例如开孔泡沫，其能够吸收存在于孔中的大量声能。同时，该材料对于MR数据采集所需的RF信号具有高度透射性，并避免产生杂散的RF信号，这将对MR数据增加噪声。

6. 发明授权

US5864273A Cryocooler vibration isolation and noise reduction in magnetic resonance imaging 失效
标题翻译：冷却器在磁共振成像中的隔振和降噪
公开(公告)号：US5864273A
公开(公告)日：1999-01-26
申请号：US814909
申请日：1997-03-12
申请人： David E. Dean , Clifford J. Ginfrida , Scott Thomas Mansell , Thomas M. Nixon , Dewain A. Purgill , Michael James Radziun
发明人： David E. Dean , Clifford J. Ginfrida , Scott Thomas Mansell , Thomas M. Nixon , Dewain A. Purgill , Michael James Radziun
IPC分类号： A61B5/055 , F17C13/00 , F25D19/00 , G01R33/3815 , H01F6/00 , H01F6/04 , H01F1/00
CPC分类号： F25D19/006 , G01R33/3815 , H01F6/04 , Y10S505/892
摘要： Vibration and noise isolation for a magnetic resonance imager (MRI) superconducting magnet cryocooler includes a bellows between the cryocooler and its vacuum sleeve in the magnet, a mass suspended along the axis of, but at a distance from, the cryocooler, elastomeric blocks parallel to the axis, and braided copper wires connecting the vacuum sleeve and the heat shields of the MRI. Motion limiters and bellows flexures are provided for dynamic loads which might be encountered during transport of the magnet.
摘要翻译：用于磁共振成像器（MRI）超导磁体制冷机的振动和噪声隔离包括在低温冷却器和磁体中的真空套筒之间的波纹管，沿着低温冷却器的轴线但距离冷却器一定距离的质量块，平行于轴线和连接真空套管和MRI屏蔽层的编织铜线。运动限制器和波纹管弯曲件用于在磁体运输过程中可能遇到的动态载荷。

7. 发明授权

US5570021A MR gradient set coil support assembly 失效
标题翻译： MR梯度集线圈支撑组件
公开(公告)号：US5570021A
公开(公告)日：1996-10-29
申请号：US541673
申请日：1995-10-10
申请人： Roman I. Dachniwskyj , David E. Dean , Thomas G. Ebben , Perry S. Frederick , Donald J. Jenders , Michael J. Radziun , Peter L. Sue
发明人： Roman I. Dachniwskyj , David E. Dean , Thomas G. Ebben , Perry S. Frederick , Donald J. Jenders , Michael J. Radziun , Peter L. Sue
IPC分类号： A61B5/055 , G01R33/38 , G01R33/385 , H01F7/20 , G01V3/00
CPC分类号： G01R33/385 , G01R33/3806 , G01R33/3856
摘要： An arrangement is provided for supporting the inner and outer gradient coils of one or more gradient coil sets, the coils of each gradient coil set providing one of the orthogonal gradient magnetic fields for an MR imaging system. The arrangement includes an inner cylindrical coil form disposed to supportably carry an inner gradient coil of a coil set, an outer cylindrical coil form in coaxial spaced-apart relationship with the inner coil form disposed to supportably carry an outer gradient coil of the coil set, and a stiffening cylinder positioned between the inner and outer coil forms to divide the space therebetween into first and second volumes. A thermally conductive adhesive material, such as an epoxy containing alumina particulate material, is inserted into the first and second volumes to bond both the inner and outer coil forms to the stiffening cylinder, in order to hold the inner and outer gradient coils respectively carried by the coil forms in rigid fixed relationship with respect to one another.
摘要翻译：提供一种用于支撑一个或多个梯度线圈组的内部和外部梯度线圈的装置，每个梯度线圈组的线圈为MR成像系统提供一个正交梯度磁场。该装置包括内部圆柱形线圈形式，其设置成可支撑地承载线圈组的内部梯度线圈，与设置成可支承地承载线圈组的外部梯度线圈的内部线圈形状的同轴间隔关系的外部圆柱形线圈形式，以及位于内圈和外圈之间的加强气缸，以将它们之间的空间分成第一和第二容积。导热粘合剂材料，例如含环氧的氧化铝颗粒材料，被插入到第一和第二体积中，以将内圈和外圈两种形式粘合到加强缸上，以便保持分别由线圈相对于彼此呈刚性固定关系。

8. 发明授权

US07190765B2 Bearing temperature and focal spot position controlled anode for a CT system 有权
标题翻译： CT系统的轴承温度和焦点位置控制阳极
公开(公告)号：US07190765B2
公开(公告)日：2007-03-13
申请号：US10710629
申请日：2004-07-26
申请人： Liqin Wang , Gregory A. Steinlage , David E. Dean , Thomas D. Schaefer
发明人： Liqin Wang , Gregory A. Steinlage , David E. Dean , Thomas D. Schaefer
IPC分类号： H01J35/10
CPC分类号： H01J35/101 , H01J2235/1046 , H01J2235/1208
摘要： An anode assembly (50) includes a thermally conductive bearing encasement (52) covering a portion of a bearing (64). An anode (56) rotates on the bearing (64) and has a target (58) with an associated focal spot (60). The thermally conductive bearing encasement (52) is configured and expansion limited to prevent displacement of the focal spot (60) of greater than a predetermined displacement during operation of the anode (56).
摘要翻译：阳极组件（50）包括覆盖轴承（64）的一部分的导热轴承套（52）。阳极（56）在轴承（64）上旋转并且具有与相关焦点（60）的目标（58）。导热轴承座（52）被构造和膨胀限制，以防止焦点（60）在阳极（56）的操作期间大于预定位移的位移。

9. 发明授权

US07706856B2 System and method for predictive thermal output control of a medical device 有权
标题翻译：医疗器械的预测性热输出控制系统和方法
公开(公告)号：US07706856B2
公开(公告)日：2010-04-27
申请号：US10906792
申请日：2005-03-07
申请人： David E. Dean , Ariel Friedlander
发明人： David E. Dean , Ariel Friedlander
IPC分类号： A61B5/05 , G01V3/00
CPC分类号： G01R33/3804 , G01R33/3856
摘要： A system and method for controlling thermal output of a medical device is disclosed. A thermal controller receives operational parameters for an impending use of a medical device and predicts a thermal output of the medical device from the operational parameters. The thermal controller compares the predicted thermal output to a desired limit on thermal output and, if the predicted thermal output exceeds the desired limit on thermal output, dynamically controls power consumption by the medical device to maintain an actual thermal output substantially at or below the desired limit on thermal output during use of the medical device.
摘要翻译：公开了一种用于控制医疗装置的热输出的系统和方法。热控制器接收即将使用医疗设备的操作参数，并根据操作参数预测医疗设备的热输出。热控制器将预测的热输出与热输出的期望限度进行比较，并且如果预期的热输出超过热输出的期望极限，则动态地控制医疗设备的功率消耗，以将实际的热输出保持在基本上等于或低于期望值限制使用医疗设备时的热输出。

10. 发明授权

US06661229B2 RF birdcage coil with reduced acoustic noise 有权
公开(公告)号：US06661229B2
公开(公告)日：2003-12-09
申请号：US09845594
申请日：2001-04-30
申请人： Daniel J. Weyers , Shizhe Li , David E. Dean
发明人： Daniel J. Weyers , Shizhe Li , David E. Dean
IPC分类号： G01V300
CPC分类号： G01R33/34046 , G01R33/34007
摘要： An RF birdcage coil for use in MRI systems is disclosed. A number of slotted or nonconductive channels are provided in the conductive material of the RF coil to minimize the size of the conductive paths available for eddy currents. Furthermore, blocking capacitors are applied between the legs and the end segments of the conductive elements to isolate the end segments from the legs at low frequency harmonics, such as those associated with eddy currents, while acting substantially as a short circuit at high operational frequencies. Preferably, the blocking capacitors are constructed by providing the legs of a plurality of I-beams on a first side of a dielectric material, and the end segments on an opposing side. The blocking capacitor results from overlapping the conductive material forming the leg and end segment on opposite sides of the dielectric material.

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