公开(公告)号：US08155727B2

公开(公告)日：2012-04-10

申请号：US12393454

申请日：2009-02-26

申请人： Hai Ning Wang ,  Yan Hong Chen ,  Jian Min Wang

发明人： Hai Ning Wang ,  Yan Hong Chen ,  Jian Min Wang

IPC分类号： A61B5/055

CPC分类号： G01R33/34046 ,  A61B5/055 ,  A61B5/4528 ,  G01R33/34084 ,  G01R33/3415

摘要： A wrist coil for magnetic resonance imaging has a tubular coil formed by a number of coil splicing units spliced together in succession, and an annular coil unit that is wound around the surface of the tubular coil. Since the annular coil unit is wound around the surface of the tubular coil, and the current direction in the annular coil unit is perpendicular to the current direction in each of the coil splicing units, when some of the coil splicing units in the tubular coil do not acquire signals due to the fact that their magnetic field direction is parallel to that of the main magnetic field direction, the annular coil unit will carry out signal acquisition. Furthermore, since the magnetic flux of the annular coil unit is relatively large, this ensures a relatively high signal-to-noise ratio in the acquired signals no matter whatever layout position is adopted for the wrist coil, thus reducing equipment costs and eliminating restrictions for clinical applications in the prior art.

摘要翻译： 用于磁共振成像的腕线圈具有由连续拼接在一起的多个线圈拼接单元形成的管状线圈和缠绕在管状线圈的表面上的环形线圈单元。 由于环形线圈单元缠绕在管状线圈的表面上，并且环形线圈单元中的电流方向与每个线圈接合单元中的电流方向垂直，所以当管状线圈中的一些线圈接合单元 由于它们的磁场方向与主磁场方向的磁场方向平行，所以不能获取信号，所以环形线圈单元将执行信号采集。 此外，由于环形线圈单元的磁通量相对较大，因此无论采用何种布局位置，腕部线圈都可以获得相对较高的信噪比，从而降低了设备成本并消除了对 现有技术中的临床应用。

公开(公告)号：US07876098B2

公开(公告)日：2011-01-25

申请号：US12394705

申请日：2009-02-27

申请人： Hua Bin Zhu ,  Yan Hong Chen ,  Hai Ning Wang ,  Jian Min Wang

发明人： Hua Bin Zhu ,  Yan Hong Chen ,  Hai Ning Wang ,  Jian Min Wang

IPC分类号： G01V3/00

CPC分类号： G01R33/34046 ,  G01R33/3415 ,  G01R33/365

摘要： A volume coil for a magnetic resonance imaging system is composed of a number of coil units. In the coil, there are overlapped parts between two adjacent ones of the coil units for eliminating coupling between these two adjacent coil units. Two next-adjacent ones of the coil units, which are separated from each other by one coil unit, are each provided with an inductor, and these two inductors are coupled with each other for eliminating coupling between these two next-adjacent coil units. All coil units are collected on one axial end face of the coil. Two coil units in the coil that are neither adjacent coil units nor next-adjacent coil units are connected with each other on the end face by a capacitance circuit or a inductance circuit for eliminating the coupling between these two coil units that are neither adjacent coil units nor next-adjacent coil units. The coupling among the various coil units is relatively thoroughly eliminated, and the signal-to-noise ratio of the signal received by the coil is increased.

摘要翻译： 用于磁共振成像系统的体积线圈由多个线圈单元组成。 在线圈中，在两个相邻的线圈单元之间存在重叠部分，用于消除这两个相邻线圈单元之间的耦合。 通过一个线圈单元彼此分离的两个相邻的线圈单元中的每一个分别设置有电感器，并且这两个电感器彼此耦合以消除这两个相邻的线圈单元之间的耦合。 所有线圈单元被收集在线圈的一个轴向端面上。 线圈中两个不是相邻的线圈单元和下一个相邻的线圈单元的线圈单元在端面上通过电容电路或电感电路彼此连接，用于消除这两个线圈单元之间的耦合，这两个线圈单元既不是相邻的线圈单元 也不是下一个相邻的线圈单元。 各线圈单元之间的耦合被相对彻底地消除，并且由线圈接收的信号的信噪比增加。

公开(公告)号：US20090221906A1

公开(公告)日：2009-09-03

申请号：US12393454

申请日：2009-02-26

申请人： Hai Ning Wang ,  Yan Hong Chen ,  Jian Min Wang

发明人： Hai Ning Wang ,  Yan Hong Chen ,  Jian Min Wang

IPC分类号： A61B5/055

CPC分类号： G01R33/34046 ,  A61B5/055 ,  A61B5/4528 ,  G01R33/34084 ,  G01R33/3415

摘要： A wrist coil for magnetic resonance imaging has a tubular coil formed by a number of coil splicing units spliced together in succession, and an annular coil unit that is wound around the surface of the tubular coil. Since the annular coil unit is wound around the surface of the tubular coil, and the current direction in the annular coil unit is perpendicular to the current direction in each of the coil splicing units, when some of the coil splicing units in the tubular coil do not acquire signals due to the fact that their magnetic field direction is parallel to that of the main magnetic field direction, the annular coil unit will carry out signal acquisition. Furthermore, since the magnetic flux of the annular coil unit is relatively large, this ensures a relatively high signal-to-noise ratio in the acquired signals no matter whatever layout position is adopted for the wrist coil, thus reducing equipment costs and eliminating restrictions for clinical applications in the prior art.

摘要翻译： 用于磁共振成像的腕线圈具有由连续拼接在一起的多个线圈拼接单元形成的管状线圈和缠绕在管状线圈的表面上的环形线圈单元。 由于环形线圈单元缠绕在管状线圈的表面上，并且环形线圈单元中的电流方向与每个线圈接合单元中的电流方向垂直，所以当管状线圈中的一些线圈接合单元 由于它们的磁场方向与主磁场方向的磁场方向平行，所以不能获取信号，所以环形线圈单元将执行信号采集。 此外，由于环形线圈单元的磁通量相对较大，因此无论采用何种布局位置，腕部线圈都可以获得相对较高的信噪比，从而降低了设备成本并消除了对 现有技术中的临床应用。

公开(公告)号：US20090243612A1

公开(公告)日：2009-10-01

申请号：US12394705

申请日：2009-02-27

申请人： Hua Bin Zhu ,  Yan Hong Chen ,  Hai Ning Wang ,  Jian Min Wang

发明人： Hua Bin Zhu ,  Yan Hong Chen ,  Hai Ning Wang ,  Jian Min Wang

IPC分类号： G01R33/34

CPC分类号： G01R33/34046 ,  G01R33/3415 ,  G01R33/365

摘要： A volume coil for a magnetic resonance imaging system is composed of a number of coil units. In the coil, there are overlapped parts between two adjacent ones of the coil units for eliminating coupling between these two adjacent coil units. Two next-adjacent ones of the coil units, which are separated from each other by one coil unit, are each provided with an inductor, and these two inductors are coupled with each other for eliminating coupling between these two next-adjacent coil units. All coil units are collected on one axial end face of the coil. Two coil units in the coil that are neither adjacent coil units nor next-adjacent coil units are connected with each other on the end face by a capacitance circuit or a inductance circuit for eliminating the coupling between these two coil units that are neither adjacent coil units nor next-adjacent coil units. The coupling among the various coil units is relatively thoroughly eliminated, and the signal-to-noise ratio of the signal received by the coil is increased.

摘要翻译： 用于磁共振成像系统的体积线圈由多个线圈单元组成。 在线圈中，在两个相邻的线圈单元之间存在重叠部分，用于消除这两个相邻线圈单元之间的耦合。 通过一个线圈单元彼此分离的两个相邻的线圈单元中的每一个分别设置有电感器，并且这两个电感器彼此耦合以消除这两个相邻的线圈单元之间的耦合。 所有线圈单元被收集在线圈的一个轴向端面上。 线圈中两个不是相邻的线圈单元和下一个相邻的线圈单元的线圈单元在端面上通过电容电路或电感电路彼此连接，用于消除这两个线圈单元之间的耦合，这两个线圈单元既不是相邻的线圈单元 也不是下一个相邻的线圈单元。 各线圈单元之间的耦合被相对彻底地消除，并且由线圈接收的信号的信噪比增加。

公开(公告)号：US07759937B2

公开(公告)日：2010-07-20

申请号：US12056593

申请日：2008-03-27

申请人： Zeng He He ,  Hai Ning Wang ,  Jian Min Wang ,  Yang Wang

发明人： Zeng He He ,  Hai Ning Wang ,  Jian Min Wang ,  Yang Wang

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/246 ,  G01R33/34053 ,  G01R33/36 ,  G01R33/3642 ,  G01R33/56545

摘要： In a method and magnetic resonance (MR apparatus for reducing aliasing artifacts in the imaging for MR-monitored high intensity focused ultrasound HIFU therapy, a primary coil is used to receive the MR signals, and an additional coil is provided to receive interfering MR signals that form aliasing artifacts in the MR-monitored HIFU therapy imaging. The MR signals received by the primary coil and the interfering MR signals received by the additional coil are concurrently acquired. The interfering MR signals received by the additional coil are removed from the MR signals received by the primary coil. MR images are generated based on the MR signals with the interfering MR signals removed. Aliasing artifacts caused by the interfering MR signals thus are removed from the MR images without reducing the resolution of the scanned body parts in the MR images. In addition, the MR scanning time can be—maintained by using a proper phase oversampling technology in the concurrent signal acquisition.

摘要翻译： 在MR方法和磁共振（MR装置中，用于MR监测的高强度聚焦超声HIFU治疗用于降低成像中的混叠伪像的MR装置，使用初级线圈来接收MR信号，并且提供附加线圈以接收干扰MR信号， 在MR监测的HIFU治疗成像中形成混叠伪像，同时获取由初级线圈接收的MR信号和由附加线圈接收的干扰MR信号，由接收的MR信号中除去附加线圈接收到的干扰MR信号 通过初级线圈，MR图像是基于去除了干扰MR信号的MR信号产生的，因此由MR干扰MR信号引起的混淆伪像不会降低MR图像中扫描的身体部位的分辨率。 此外，通过在并发信号采集中使用适当的相位过采样技术可以维持MR扫描时间 n。

公开(公告)号：US20100283462A1

公开(公告)日：2010-11-11

申请号：US12436969

申请日：2009-05-07

申请人： Hai Ning Wang ,  Jian Min Wang

发明人： Hai Ning Wang ,  Jian Min Wang

IPC分类号： G01R33/54 ,  G01R33/44

CPC分类号： G01R33/3415 ,  G01R33/3621 ,  G01R33/56 ,  G01R33/5608

摘要： In a method and system for processing radio frequency signals of a tubular surface coil, the N channels of coil output signals are generated based on M channels of radio frequency signals acquired by M coil units in the tubular surface coil, wherein N is an even number greater than 1 and is less than or equal to M, and the N channels of coil output signals can be divided into N/2 pairs, with the two channels of coil output signals in each of the pairs respectively coming from the coil units located at symmetrical positions of the tubular surface coil. The respective modulus values of the two channels of coil output signals in said each pair of coil output signals are multiplied to obtain N/2 products which are then summed, and the square root of the summed result is computed, so as to generate a lateral cross-sectional image according to the computed result of square root. The signal strength in an imaging area and the uniformity of signal to noise ratio are thereby improved.

摘要翻译： 在用于处理管状表面线圈的射频信号的方法和系统中，基于由管状表面线圈中的M个线圈单元获取的M个通道的射频信号产生N个线圈输出信号，其中N是偶数 大于1且小于或等于M，并且线圈输出信号的N个通道可以被分成N / 2对，每对中的两个线圈输出信号分别来自位于 管状表面线圈的对称位置。 将所述每对线圈输出信号中的两个通道的线圈输出信号的各自的模数值相乘以获得N / 2个乘积，然后求和，并且计算求和结果的平方根，以产生横向 根据平方根的计算结果的截面图像。 因此，成像区域的信号强度和信噪比的均匀性得以提高。

公开(公告)号：US20090219026A1

公开(公告)日：2009-09-03

申请号：US12393226

申请日：2009-02-26

申请人： Hai Ning Wang ,  Jian Min Wang ,  Wei Dong Wang

发明人： Hai Ning Wang ,  Jian Min Wang ,  Wei Dong Wang

IPC分类号： G01R33/20

CPC分类号： G01R33/34046 ,  G01R33/34076

摘要： A birdcage multi-channel body coil has a number of coil units that form a cylindrical shape, and they are connected in succession in the circumferential direction along the side face of the cylinder. The coil units are provided with capacitors with selected capacitance values that eliminate coupling between the coil units. This multi-channel body coil simply and conveniently eliminates the coupling between the coil units.

摘要翻译： 鸟笼多通道体线圈具有多个形成圆柱形状的线圈单元，并且沿着圆筒的侧面在圆周方向上连续连接。 线圈单元具有选择的电容值的电容器，其消除线圈单元之间的耦合。 该多通道体线圈简单且方便地消除了线圈单元之间的联接。

公开(公告)号：US08067940B2

公开(公告)日：2011-11-29

申请号：US12436969

申请日：2009-05-07

申请人： Hai Ning Wang ,  Jian Min Wang

发明人： Hai Ning Wang ,  Jian Min Wang

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/3621 ,  G01R33/56 ,  G01R33/5608

摘要： In a method and system for processing radio frequency signals of a tubular surface coil, the N channels of coil output signals are generated based on M channels of radio frequency signals acquired by M coil units in the tubular surface coil, wherein N is an even number greater than 1 and is less than or equal to M, and the N channels of coil output signals can be divided into N/2 pairs, with the two channels of coil output signals in each of the pairs respectively coming from the coil units located at symmetrical positions of the tubular surface coil. The respective modulus values of the two channels of coil output signals in said each pair of coil output signals are multiplied to obtain N/2 products which are then summed, and the square root of the summed result is computed, so as to generate a lateral cross-sectional image according to the computed result of square root. The signal strength in an imaging area and the uniformity of signal to noise ratio are thereby improved.

摘要翻译： 在用于处理管状表面线圈的射频信号的方法和系统中，基于由管状表面线圈中的M个线圈单元获取的M个通道的射频信号产生N个线圈输出信号，其中N是偶数 大于1且小于或等于M，并且线圈输出信号的N个通道可以被分成N / 2对，每对中的两个线圈输出信号分别来自位于 管状表面线圈的对称位置。 将所述每对线圈输出信号中的两个通道的线圈输出信号的各自的模数值相乘以获得N / 2个乘积，然后求和，并且计算求和结果的平方根，以产生横向 根据平方根的计算结果的截面图像。 因此，成像区域的信号强度和信噪比的均匀性得以提高。

公开(公告)号：US07876099B2

公开(公告)日：2011-01-25

申请号：US12398290

申请日：2009-03-05

申请人： Hai Ning Wang ,  Jian Min Wang

发明人： Hai Ning Wang ,  Jian Min Wang

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/3678

摘要： A knee coil for magnetic resonance imaging has a first, a second and a third array of coil units, the first, second and third array of coil units forming a cylindrical shape, and being adjacent to each other in the direction perpendicular to the bottom of the cylindrical shape. Each of the first array of coil units and the third array of coil units is composed of two saddle coil units, and the second array of coil units is composed of six coil units, which are successively adjacent to each other in the direction of circumference of the cylinder side face. With a simple design and at a low cost, this knee coil ensures good capacity of parallel acquisition in all directions in the course of scanning while reducing the number of channels.

摘要翻译： 用于磁共振成像的膝盖线圈具有第一，第二和第三线圈单元阵列，第一，第二和第三线圈单元阵列形成圆柱形，并且在垂直于底部的方向上彼此相邻 圆柱形。 第一线圈单元阵列和第三阵列线圈单元中的每一个由两个鞍形线圈单元构成，第二线圈单元由六个线圈单元组成，六个线圈单元在圆周方向上彼此相邻 气缸侧面。 采用简单的设计和低成本，这种膝盖线圈确保了在扫描过程中在各个方向上并行采集的良好容量，同时减少了通道数量。

公开(公告)号：US20090322334A1

公开(公告)日：2009-12-31

申请号：US12398290

申请日：2009-03-05

申请人： Hai Ning Wang ,  Jian Min Wang

发明人： Hai Ning Wang ,  Jian Min Wang

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/3678

摘要： A knee coil for magnetic resonance imaging has a first, a second and a third array of coil units, the first, second and third array of coil units forming a cylindrical shape, and being adjacent to each other in the direction perpendicular to the bottom of the cylindrical shape. Each of the first array of coil units and the third array of coil units is composed of two saddle coil units, and the second array of coil units is composed of six coil units, which are successively adjacent to each other in the direction of circumference of the cylinder side face. With a simple design and at a low cost, this knee coil ensures good capacity of parallel acquisition in all directions in the course of scanning while reducing the number of channels.

摘要翻译： 用于磁共振成像的膝盖线圈具有第一，第二和第三线圈单元阵列，第一，第二和第三线圈单元阵列形成圆柱形，并且在垂直于底部的方向上彼此相邻 圆柱形。 第一线圈单元阵列和第三阵列线圈单元中的每一个由两个鞍形线圈单元构成，第二线圈单元由六个线圈单元组成，六个线圈单元在圆周方向上彼此相邻 气缸侧面。 采用简单的设计和低成本，这种膝盖线圈确保了在扫描过程中在各个方向上并行采集的良好容量，同时减少了通道数量。