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公开(公告)号：US5545999A
公开(公告)日：1996-08-13
申请号：US407825
申请日：1995-03-21
IPC分类号： A61M25/095 , G01R33/36 , G01V3/00
CPC分类号： G01R33/3692 , G01R33/3621
摘要： A circuit for amplifying signals received by the receive coil of a magnetic resonance (MR) system includes a preamplifier employing an active circuit device, such as a GaAs-MESFET or HEMT. The preamplifier is located proximate to the receive coil in order to maintain as high a signal-to-noise ratio as possible for the preamplifier output signals. A capacitance is coupled to the receive coil to form an input impedance matching network for the input of the preamplifier. The preamplifier output is coupled through a fiber optic cable to remotely located MR signal processing electronics, which further processes signals received by the MR receive coil and amplified by the preamplifier.
摘要翻译： 用于放大由磁共振（MR）系统的接收线圈接收的信号的电路包括采用诸如GaAs-MESFET或HEMT的有源电路器件的前置放大器。 前置放大器位于接收线圈附近，以便为前置放大器输出信号保持尽可能高的信噪比。 电容耦合到接收线圈以形成用于前置放大器的输入的输入阻抗匹配网络。 前置放大器输出通过光纤电缆耦合到远程定位的MR信号处理电子设备，其进一步处理由MR接收线圈接收并由前置放大器放大的信号。
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2.发明授权Magnetic resonance guided ultrasound therapy system with inclined track to move transducers in a small vertical space 失效具有倾斜轨道的磁共振引导超声治疗系统在小的垂直空间中移动传感器
公开(公告)号：US5275165A
公开(公告)日：1994-01-04
申请号：US972331
申请日：1992-11-06
CPC分类号： A61N7/02 , A61B2017/00911 , A61B2090/374
摘要： A magnetic resonance (MR) surgery system facilitates surgery with a focussed ultrasound transducer that selectively destroys tissue in a region within a subject. The focussed energy transducer dissipates energy at a focal point within the region of tissue to be destroyed. A non-magnetic positioning device having a vertical dimension small enough to fit easily within the bore of an MR magnet moves an energy transducer in a limited vertical space. The positioning device employs a plurality of hydraulic positioners and an inclined plane to position the ultrasound focal point under the control of an operator. An MR imaging system employing a temperature sensitive pulse sequence creates an image of the tissue and the region being heated to allow the operator to adjust the position of the ultrasonic transducer so as to direct ultrasonic energy to the appropriate location.
摘要翻译： 磁共振（MR）手术系统利用选择性地破坏受试者内的区域中的组织的聚焦超声换能器促进手术。 聚焦能量传感器在要破坏的组织区域内的焦点处消耗能量。 具有小到足以容易地配合在MR磁体的孔内的垂直尺寸的非磁性定位装置在有限的垂直空间中移动能量换能器。 定位装置采用多个液压定位器和倾斜平面，以在操作者的控制下定位超声焦点。 使用温度敏感脉冲序列的MR成像系统产生组织的图像和被加热的区域，以允许操作者调整超声波换能器的位置，以将超声能量引导到适当的位置。
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3.发明授权Thermal imaging of fat and muscle using a simultaneous phase and magnitude double echo sequence 有权使用同时相位和幅度双回声序列对脂肪和肌肉进行热成像公开(公告)号：US06618608B1
公开(公告)日：2003-09-09
申请号：US09696624
申请日：2000-10-24
申请人： Ronald D. Watkins , Harvey E. Cline
发明人： Ronald D. Watkins , Harvey E. Cline
IPC分类号： A61B505
CPC分类号： G01R33/4804 , A61B2090/374 , A61N7/02 , G01R33/4828
摘要： A method for magnetic resonance imaging includes applying a first two echo gradient echo sequence to a tissue region, the first two echo sequence generating a first echo and a subsequent second echo. A second two echo gradient echo sequence is applied after heating the tissue region, the second two echo sequence generating a third echo and a subsequent fourth echo. A magnitude difference between the third echo and the first echo is measured and correlated to a temperature shift for fat tissue, and a phase difference between the fourth echo and the second echo is measured and correlated to a temperature shift for water-based tissue. A thermal image is generated of the tissue region based upon the temperature shift for both fat and water-based tissue.
摘要翻译： 一种用于磁共振成像的方法包括将第一个两个回波梯度回波序列应用于组织区域，所述前两个回波序列产生第一回波和随后的第二回波。 在加热组织区域之后应用第二个两个回波梯度回波序列，第二个两个回波序列产生第三回波和随后的第四回波。 测量第三回波和第一回波之间的幅度差并与脂肪组织的温度偏移相关，并且测量第四回波和第二回波之间的相位差并与水基组织的温度偏移相关。 基于脂肪和水基组织的温度变化，产生组织区域的热图像。
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公开(公告)号：US5368032A
公开(公告)日：1994-11-29
申请号：US149485
申请日：1993-11-09
申请人： Harvey E. Cline , Ronald D. Watkins
发明人： Harvey E. Cline , Ronald D. Watkins
CPC分类号： G01R33/4804 , A61B34/20 , A61N7/02 , G01R33/285 , A61B2034/107 , A61B2034/2055 , A61B2034/2063 , A61B2090/365 , A61B2090/374
摘要： A manually positioned focussed energy transducer system facilitates medical procedures by allowing a physician to manually position the focal point of the focussed energy transducer to a selected tissue. The focal point of the focussed energy transducer is the location which tissue is destroyed when the energy transducer is activated. A tracking device tracks the position and orientation of the ultrasound transducer. An MR imaging system creates an image of internal structures of the patient near the location of the energy transducer. A superposition device receives the position and orientation of the ultrasound transducer from the tracking device and superimposes a symbol on the image corresponding to the position of the energy transducer relative to the patient. This allows the physician to adjust the position of the energy transducer to the appropriate location without the need for energizing the energy transducer.
摘要翻译： 手动定位的聚焦能量换能器系统通过允许医师将聚焦的能量换能器的焦点手动定位到所选择的组织来促进医疗过程。 聚焦能量传感器的焦点是当能量传感器被激活时组织被破坏的位置。 跟踪装置跟踪超声换能器的位置和方位。 MR成像系统在能量传感器的位置附近创建患者的内部结构的图像。 叠加装置从跟踪装置接收超声波换能器的位置和方向，并将符号叠加在对应于能量换能器相对于患者的位置的图像上。 这允许医师将能量换能器的位置调整到适当的位置，而不需要为能量换能器通电。
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公开(公告)号：US07592813B2
公开(公告)日：2009-09-22
申请号：US11930316
申请日：2007-10-31
IPC分类号： G01V3/00
CPC分类号： G01R33/3692
摘要： A system wirelessly supplies electrical power to an RF coil and an analog-to-digital converter (ADC) for an MRI system. The system supplies power to at least operate the RF coil and ADC without the use of a battery and without use of a wired connection external to the bore of the magnet.
摘要翻译： 系统向MRI系统向RF线圈和模数转换器（ADC）无线地提供电力。 系统提供电源，至少在不使用电池的情况下操作RF线圈和ADC，而不需要使用磁铁外部的有线连接。
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公开(公告)号：US5247935A
公开(公告)日：1993-09-28
申请号：US854040
申请日：1992-03-19
IPC分类号： A61B17/22 , A61B19/00 , A61N7/02 , G01R33/48 , G01R33/561
CPC分类号： G01R33/4804 , A61B17/2256 , A61B2090/374 , A61N7/02 , G01R33/56308
摘要： A magnetic resonance surgery system facilitates performance of surgery with a focussed ultrasound transducer that selectively destroys tissue in a region within a subject. The focussed ultrasound transducer dissipates ultrasonic energy at a focal point within the region of tissue to be destroyed. A number of hydraulic positioners position the focal point under the control of a surgeon. A magnetic resonance imaging system employing a temperature sensitive pulse sequence creates an image of the tissue and the region being heated to allow the surgeon to adjust the position of the ultrasonic transducer so as to direct ultrasonic energy to the appropriate location.
摘要翻译： 磁共振手术系统有助于利用选择性地破坏受试者内的区域中的组织的聚焦超声换能器进行手术。 聚焦超声波换能器在被破坏的组织区域内的焦点处消散超声波能量。 一些液压定位器将焦点定位在外科医生的控制之下。 使用温度敏感脉冲序列的磁共振成像系统产生组织的图像和被加热的区域，以允许外科医生调节超声换能器的位置，以便将超声波能量引导到适当的位置。
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公开(公告)号：US07309989B2
公开(公告)日：2007-12-18
申请号：US10907582
申请日：2005-04-06
IPC分类号： G01V3/00
CPC分类号： G01R33/3692
摘要： A system wirelessly supplies electrical power to an RF coil and an analog-to-digital converter (ADC) for an MRI system. The system supplies power to at least operate the RF coil and ADC without the use of a battery and without use of a wired connection external to the bore of the magnet.
摘要翻译： 系统向MRI系统向RF线圈和模数转换器（ADC）无线地提供电力。 系统提供电源，至少在不使用电池的情况下操作RF线圈和ADC，而不需要使用磁铁外部的有线连接。
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8.发明授权
公开(公告)号：US5526814A
公开(公告)日：1996-06-18
申请号：US443229
申请日：1995-05-17
申请人： Harvey E. Cline , Ronald D. Watkins
发明人： Harvey E. Cline , Ronald D. Watkins
CPC分类号： A61N7/02 , A61B17/2256 , A61B34/70 , A61B18/00 , A61B2090/101 , A61B2090/374 , A61B90/36
摘要： An automatically positioned focussed energy transducer system facilitates medical procedures by allowing a physician to interactively view the position the focal point of a focussed energy transducer superimposed upon a medical image and computer generated model of internal structures of a patient. A tracking device tracks the position and orientation of the ultrasound transducer. A medical imaging system creates an image of internal structures of the patient near the location of the energy transducer. A general purpose computer either receives a model of internal structures constructed in advance, or employs a medical imaging device to create the model. The general purpose computer displays selected surfaces of the model in an orientation and view which coincides with the medical image acquired. A superposition device receives the position and orientation of the ultrasound transducer from the tracking device and superimposes a symbol on the images corresponding to the position of the energy transducer relative to the patient. The physician then selects an internal structure to be destroyed which the general purpose computer determines the locations which the focal point must scan in order to destroy the structure. An actuator, coupled to the general purpose computer causes the focal point of the energy transducer to scan these locations which the physician adjusts the intensity of energy provided to the focal point by an input device.
摘要翻译： 自动定位的聚焦能量换能器系统通过允许医师交互地观察叠加在医学图像上的聚焦能量换能器的焦点和计算机产生的患者内部结构模型的位置来促进医疗过程。 跟踪装置跟踪超声换能器的位置和方位。 医疗成像系统在能量传感器的位置附近创建患者的内部结构的图像。 通用计算机可以接收预先构建的内部结构的模型，或者使用医学成像装置来创建模型。 通用计算机以与所获取的医学图像重合的取向和视图来显示模型的所选表面。 叠加装置从跟踪装置接收超声换能器的位置和方向，并将符号叠加在与能量换能器相对于患者的位置相对应的图像上。 然后，医师选择要销毁的内部结构，通用计算机确定焦点必须扫描的位置以破坏结构。 耦合到通用计算机的致动器使得能量换能器的焦点扫描这些位置，医师通过输入装置调节提供给焦点的能量的强度。
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