公开(公告)号：US08421463B2

公开(公告)日：2013-04-16

申请号：US12447070

申请日：2007-10-26

申请人： Stuart Crozier ,  Huawei Zhao ,  Feng Liu

发明人： Stuart Crozier ,  Huawei Zhao ,  Feng Liu

IPC分类号： G01V3/00

CPC分类号： G01R33/3815 ,  G01R33/421

摘要： A magnetic resonance system uses a shielded superconducting magnet to produce a dsv useful for specialist imaging in an overall short magnet system at field strengths 1.5 Tesla and above. The magnet includes at least a first central coil C1, which has a length of at least 25% of the overall length of the magnet, and is used in concert with a series of symmetric primary coils, at least one set of which carry current in a direction opposite to that of the central coil. Force balancing is advantageously used in the design of the coils. The primary coils are shielded by at least one shielding coil, which carries current in a direction opposite to the majority of the primary coils. The magnet resonance system can be used for orthopedic imaging.

摘要翻译： 磁共振系统使用屏蔽超导磁体产生一个dsv，用于整个短磁体系统中的专家成像，场强为1.5特斯拉及以上。 该磁体包括至少一个第一中心线圈C1，该中心线圈C1的长度至少为磁铁整体长度的25％，并与一系列对称的初级线圈一致使用，至少一组载体电流 与中心线圈相反的方向。 力平衡有利地用于线圈的设计中。 初级线圈由至少一个屏蔽线圈屏蔽，该屏蔽线圈沿与大部分初级线圈相反的方向承载电流。 磁共振系统可用于矫形成像。

公开(公告)号：US20100079144A1

公开(公告)日：2010-04-01

申请号：US12447070

申请日：2007-10-26

申请人： Stuart Crozier ,  Huawei Zhao ,  Feng Liu

发明人： Stuart Crozier ,  Huawei Zhao ,  Feng Liu

IPC分类号： G01R33/24

CPC分类号： G01R33/3815 ,  G01R33/421

摘要： A magnetic resonance system uses a shielded superconducting magnet to produce a dsv useful for specialist imaging in an overall short magnet system at field strengths 1.5 Tesla and above. The magnet includes at least a first central coil C1, which has a length of at least 25% of the overall length of the magnet, and is used in concert with a series of symmetric primary coils, at least one set of which carry current in a direction opposite to that of the central coil. Force balancing is advantageously used in the design of the coils. The primary coils are shielded by at least one shielding coil, which carries current in a direction opposite to the majority of the primary coils. The magnet resonance system can be used for orthopedic imaging.

摘要翻译： 磁共振系统使用屏蔽超导磁体产生一个dsv，用于整个短磁体系统中的专家成像，场强为1.5特斯拉及以上。 该磁体包括至少一个第一中心线圈C1，该中心线圈C1的长度至少为磁铁整体长度的25％，并与一系列对称的初级线圈一致使用，至少一组载体电流 与中心线圈相反的方向。 力平衡有利地用于线圈的设计中。 初级线圈由至少一个屏蔽线圈屏蔽，该屏蔽线圈沿与大部分初级线圈相反的方向承载电流。 磁共振系统可用于矫形成像。

公开(公告)号：US06700468B2

公开(公告)日：2004-03-02

申请号：US10000995

申请日：2001-11-30

申请人： Stuart Crozier ,  David M. Doddrell ,  Huawei Zhao

发明人： Stuart Crozier ,  David M. Doddrell ,  Huawei Zhao

IPC分类号： G01V300

CPC分类号： G01R33/3806 ,  G01R33/3808

摘要： Asymmetric, compact non-superconducting magnets for magnetic resonance imaging are provided. The magnets have a homogeneous region (the “dsv”) which can be located close to one end of the magnet so as to reduce the sensation of claustrophobia experienced by patients undergoing MRI procedures. The magnets can be designed using a hybrid process in which current density analysis is performed to obtain an initial coil configuration which is then refined using non-linear optimization techniques to obtain a final coil configuration. The hybrid method can incorporate various constraints, including, the location and size of the dsv, the uniformity and strength of the B0 field, stray field strengths outside of the non-superconducting magnet, and field strengths within the magnet's coils. The hybrid technique can also be used to design compact symmetric non-superconducting magnets.

摘要翻译： 提供用于磁共振成像的不对称，紧凑的非超导磁体。 磁体具有均匀的区域（“dsv”），其可以位于靠近磁体的一端的位置，以便减少经历MRI程序的患者经历的幽闭恐惧症的感觉。 可以使用混合过程来设计磁体，其中进行电流密度分析以获得初始线圈配置，然后使用非线性优化技术来精炼以获得最终的线圈配置。 混合方法可以包括各种约束，包括dsv的位置和尺寸，B0场的均匀性和强度，非超导磁体外部的杂散场强以及磁体线圈内的场强。 混合技术也可用于设计紧凑型对称非超导磁体。

公开(公告)号：USRE39460E1

公开(公告)日：2007-01-09

申请号：US10283692

申请日：2002-10-30

申请人： Stuart Crozier ,  David M. Doddrell ,  Huawei Zhao

发明人： Stuart Crozier ,  David M. Doddrell ,  Huawei Zhao

IPC分类号： G01V3/00 ,  H01F5/00

CPC分类号： G01R33/3815 ,  G01R33/3806

摘要： Asymmetric, compact superconducting magnets for magnetic resonance imaging are provided. The magnets have a homogeneous region (the “dsv”) which can be located close to one end of the magnet so as to reduce the sensation of claustrophobia experienced by patients undergoing MRI procedures. The magnets can be designed using a hybrid process in which current density analysis is performed to obtain an initial coil configuration which is then refined using non-linear optimization techniques to obtain a final coil configuration. The hybrid method can incorporate various constraints, including, the location and size of the dsv, the uniformity and strength of the B0 field, stray field strengths outside of the superconducting magnet, and field strengths within the magnet's coils. The hybrid technique can also be used to design compact symmetric superconducting magnets.

摘要翻译： 提供用于磁共振成像的非对称紧凑型超导磁体。 磁体具有均匀的区域（“dsv”），其可以位于靠近磁体的一端的位置，以便减少经历MRI程序的患者经历的幽闭恐惧症的感觉。 可以使用混合过程来设计磁体，其中进行电流密度分析以获得初始线圈配置，然后使用非线性优化技术来精炼以获得最终的线圈配置。 混合方法可以包括各种约束，包括dsv的位置和大小，B O场的均匀性和强度，超导磁体外部的杂散场强，以及磁体的磁场强度 线圈 混合技术也可用于设计紧凑的对称超导磁体。

公开(公告)号：US6140900A

公开(公告)日：2000-10-31

申请号：US421035

申请日：1999-10-20

申请人： Stuart Crozier ,  David M. Doddrell ,  Huawei Zhao

发明人： Stuart Crozier ,  David M. Doddrell ,  Huawei Zhao

IPC分类号： G01R33/38 ,  G01R33/3815 ,  G01V3/00 ,  H01F5/00

CPC分类号： G01R33/3815 ,  G01R33/3806

摘要： Asymmetric, compact superconducting magnets for magnetic resonance imaging are provided. The magnets have a homogeneous region (the "dsv") which can be located close to one end of the magnet so as to reduce the sensation of claustrophobia experienced by patients undergoing MRI procedures. The magnets can be designed using a hybrid process in which current density analysis is performed to obtain an initial coil configuration which is then refined using non-linear optimization techniques to obtain a final coil configuration. The hybrid method can incorporate various constraints, including, the location and size of the dsv, the uniformity and strength of the B.sub.0 field, stray field strengths outside of the superconducting magnet, and field strengths within the magnet's coils. The hybrid technique can also be used to design compact symmetric superconducting magnets.

摘要翻译： 提供用于磁共振成像的非对称紧凑型超导磁体。 磁体具有均匀的区域（“dsv”），其可以位于靠近磁体的一端的位置，以便减少经历MRI程序的患者经历的幽闭恐惧症的感觉。 可以使用混合过程来设计磁体，其中进行电流密度分析以获得初始线圈配置，然后使用非线性优化技术来精炼以获得最终的线圈配置。 混合方法可以包括各种约束，包括dsv的位置和尺寸，B0场的均匀性和强度，超导磁体外部的杂散场强以及磁体线圈内的场强。 混合技术也可用于设计紧凑的对称超导磁体。

公开(公告)号：US20150320548A1

公开(公告)日：2015-11-12

申请号：US14804240

申请日：2015-07-20

申请人： Daniel G. Brady ,  Scott J. Catlin ,  Edward P. Geraghty ,  Huawei Zhao

发明人： Daniel G. Brady ,  Scott J. Catlin ,  Edward P. Geraghty ,  Huawei Zhao

IPC分类号： A61F2/16

CPC分类号： A61F2/1618 ,  A61F2/1624 ,  A61F2/1635 ,  A61F2002/1681 ,  A61F2002/1682 ,  A61F2002/1689 ,  A61F2250/0018

摘要： An intraocular lens for providing a range of accommodative vision, an extended depth of focus, or enhanced performance through the asymmetric transfer of ocular forces to the lens. The intraocular lens contains an optic and a haptic. The shape and/or material of the haptic results in the transmission of ocular forces to particular regions in the optic. Greater forces applied to particular regions result in deformation of that region and increased power.

摘要翻译： 一种眼内透镜，用于通过对眼镜的不对称转移提供一定范围的调节视力，扩大的焦点深度或增强的性能。 眼内透镜包含视神经和触觉。 触觉的形状和/或材料导致眼力传递到光学元件中的特定区域。 施加到特定区域的更大的力导致该区域的变形并增加功率。

公开(公告)号：US08746886B2

公开(公告)日：2014-06-10

申请号：US13353562

申请日：2012-01-19

申请人： Guangming Dai ,  Charles E. Campbell ,  Li Chen ,  Huawei Zhao ,  Dimitri Chernyak

发明人： Guangming Dai ,  Charles E. Campbell ,  Li Chen ,  Huawei Zhao ,  Dimitri Chernyak

IPC分类号： A61B3/00

CPC分类号： A61B3/0025 ,  A61B3/1015

摘要： The present invention provides methods, systems and software for scaling optical aberration measurements of optical systems. In one embodiment, the present invention provides a method of reconstructing optical tissues of an eye. The method comprises transmitting an image through the optical tissues of the eye. Aberration data from the transmitted image is measured across the optical tissues of the eye at a first plane. A conversion algorithm is applied to the data, converting it to corrective optical power data that can be used as a basis for constructing a treatment for the eye at a second plane.

摘要翻译： 本发明提供了用于缩放光学系统的光学像差测量的方法，系统和软件。 在一个实施例中，本发明提供了重建眼睛的光学组织的方法。 该方法包括通过眼睛的光学组织传输图像。 在第一平面上跨越眼睛的光学组织测量来自透射图像的畸变数据。 将转换算法应用于数据，将其转换为校正光功率数据，该光功率数据可用作在第二平面上为眼睛构建治疗的基础。

公开(公告)号：US20130297018A1

公开(公告)日：2013-11-07

申请号：US13462114

申请日：2012-05-02

申请人： Daniel G. Brady ,  Huawei Zhao ,  Edward Geraghty ,  Scott J. Catlin

发明人： Daniel G. Brady ,  Huawei Zhao ,  Edward Geraghty ,  Scott J. Catlin

IPC分类号： A61F2/16

CPC分类号： A61F2/1618 ,  A61F2/1624 ,  A61F2/1635 ,  A61F2002/1681 ,  A61F2002/1682 ,  A61F2002/1689 ,  A61F2250/0018

摘要： An intraocular lens for providing a range of accommodative vision, an extended depth of focus, or enhanced performance through the asymmetric transfer of ocular forces to the lens. The intraocular lens contains an optic and a haptic. The shape and/or material of the haptic results in the transmission of ocular forces to particular regions in the optic. Greater forces applied to particular regions result in deformation of that region and increased power.

公开(公告)号：US20130060542A1

公开(公告)日：2013-03-07

申请号：US13601252

申请日：2012-08-31

申请人： Huawei Zhao

发明人： Huawei Zhao

IPC分类号： G06G7/60 ,  G06F17/10

CPC分类号： G02C7/04 ,  A61F2/1637 ,  A61F2/1645 ,  A61F2240/002 ,  G02C7/024

摘要： An ophthalmic lens for modifying or reducing non-axisymmetric higher order aberrations includes an optic body disposed about an optical axis having a primary meridian and an orthogonal secondary meridian. The optic body includes a higher order toric shape that is imposed on or added to one of the optic body surfaces. The higher order toric shape also includes a first profile disposed along the primary meridian and a second profile disposed along the secondary meridian that is different in shape from the first profile. The higher order toric shape is characterized by a profile along at least one meridian of the lens that changes with increasing radius from the optical axis raised to a power that is greater than two.

摘要翻译： 用于修改或减少非轴对称高阶像差的眼镜包括围绕具有主子午线和正交子午线的光轴设置的光学主体。 光学主体包括施加在光学主体表面之一上或添加到光学体表面之一的较高阶复曲面形状。 较高阶复曲面形状还包括沿着主子午线设置的第一轮廓和沿着与第一轮廓不同形状的次要子午线设置的第二轮廓。 高阶复曲面形状的特征在于沿着透镜的至少一个子午线的轮廓，其随着半径从增加的光轴增加到大于2的光焦度而变化。

公开(公告)号：US08292953B2

公开(公告)日：2012-10-23

申请号：US12254710

申请日：2008-10-20

申请人： Hendrik A Weeber ,  Patricia Ann Piers ,  Mark H. Bandhauer ,  Marrie H. Van Der Mooren ,  Huawei Zhao

发明人： Hendrik A Weeber ,  Patricia Ann Piers ,  Mark H. Bandhauer ,  Marrie H. Van Der Mooren ,  Huawei Zhao

IPC分类号： A61F2/16

CPC分类号： A61F2/1654 ,  A61F2/1618 ,  A61F2250/0014 ,  A61F2250/0053 ,  G02C7/042 ,  G02C7/044 ,  G02C7/06 ,  G02C2202/20

摘要： An intraocular lens for providing a subject with vision at various distances includes an optic having a first surface with a first shape, an opposing second surface with a second shape, a multifocal refractive profile, and one or more diffractive portions. The optic may include at least one multifocal diffractive profile. In some embodiments, multifocal diffractive and the multifocal refractive profiles are disposed on different, distinct, or non-overlapping portions or apertures of the optic. Alternatively, portions of the multifocal diffractive profiles and the multifocal refractive profiles may overlap within a common aperture or zone of the optic.

摘要翻译： 用于以不同距离为受试者提供视力的眼内透镜包括具有第一形状的第一表面，具有第二形状的相对的第二表面，多焦点折射轮廓和一个或多个衍射部分的光学元件。 光学元件可以包括至少一个多焦点衍射轮廓。 在一些实施例中，多焦点衍射和多焦点折射廓线设置在光学元件的不同的，不同的或非重叠的部分或孔上。 或者，多焦点衍射轮廓和多焦点折射轮廓的部分可以在光学器件的公共孔径或区域内重叠。