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1. 发明申请

US20140213888A1 System and Method for Multi-Roi MRI Imaging Using an RF Loop Coil 有权
标题翻译：使用RF环绕线圈进行多重MRI成像的系统和方法
公开(公告)号：US20140213888A1
公开(公告)日：2014-07-31
申请号：US14163447
申请日：2014-01-24
申请人： Djaudat Idiyatullin , Curt Corum , Michael Garwood , Donald Nixdorf , Gregor Adriany
发明人： Djaudat Idiyatullin , Curt Corum , Michael Garwood , Donald Nixdorf , Gregor Adriany
IPC分类号： G01R33/34 , G01R33/48
CPC分类号： G01R33/34084 , A61B5/055 , G01R33/341 , G01R33/3415
摘要： A system and method for producing an image using a radio frequency (RF) coil in a magnetic resonance imaging system (MRI). A static magnetic field (B0) extends across a first and second region of interest (ROI). A local radio frequency (RF) coil, shaped like a dental arch, is positioned proximate to the ROls, the ROls being the upper and lower jaw of a subject. The RF coil and the subject are oriented in the static magnetic field (B0) to align an axis extending through a loop of the coil with the B0 direction of the static magnetic field extending across the ROls. A pulse sequence is then performed with the MRI system and the RF coil to acquire imaging data from the ROls simultaneously while using a transverse component of an excitation field (B1). The image data is reconstructed to create an image of the ROls.
摘要翻译：一种用于在磁共振成像系统（MRI）中使用射频（RF）线圈产生图像的系统和方法。静态磁场（B0）延伸穿过第一和第二感兴趣区域（ROI）。形状类似牙弓的局部射频（RF）线圈被定位成靠近RO，RO1是受试者的上下颌。 RF线圈和被摄体在静磁场（B0）中定向，以使延伸穿过线圈的轴线的轴线与延伸穿过RO的静磁场的B0方向对准。然后利用MRI系统和RF线圈执行脉冲序列，同时使用激励场（B1）的横向分量同时从RO1获取成像数据。重建图像数据以创建RO1的图像。

2. 发明申请

US20080204020A1 Method for Magnetic Resonance Imaging 有权
标题翻译：磁共振成像方法
公开(公告)号：US20080204020A1
公开(公告)日：2008-08-28
申请号：US11931968
申请日：2007-10-31
申请人： Ryan Chamberlain , Jang-Yeon Park , Michael Garwood
发明人： Ryan Chamberlain , Jang-Yeon Park , Michael Garwood
IPC分类号： G01R33/32
CPC分类号： G01R33/5615 , G01R33/4835 , G01R33/5616 , G01R33/56527 , G01R33/56536 , G01R33/56554
摘要： A method of magnetic resonance imaging based on rapid acquisition by sequential excitation and refocusing is provided. The method comprises turning on a first time-encoding gradient and applying an excitation pulse in the presence of the first time-encoding gradient. The excitation pulse excites magnetization sequentially along one spatial axis. Thereafter, a first refocusing pulse is applied. A second time-encoding gradient is turned on followed by a second refocusing pulse. A third time-encoding gradient is turned on and a signal is acquired in the presence of the third time-encoding gradient. The third time-encoding gradient sums to zero with the first time-encoding gradient and the second time-encoding gradient for sequential points in space.
摘要翻译：提供了一种通过顺序激发和重新聚焦快速获取的磁共振成像方法。该方法包括打开第一时间编码梯度并在第一时间编码梯度的存在下施加激励脉冲。激励脉冲沿着一个空间轴顺序地激发磁化。此后，施加第一重聚焦脉冲。第二次编码梯度被打开，接着是第二重新聚焦脉冲。第三时间编码梯度被打开，并且在存在第三时间编码梯度的情况下获取信号。第三时间编码梯度与空间中的连续点的第一时间编码梯度和第二时间编码梯度相加。

3. 发明申请

US20070188171A1 FREQUENCY SWEPT EXCITATION FOR MAGNETIC RESONANCE 有权
标题翻译：频磁激励磁共振
公开(公告)号：US20070188171A1
公开(公告)日：2007-08-16
申请号：US11548664
申请日：2006-10-11
申请人： Michael Garwood , Djaudat Idiyatullin
发明人： Michael Garwood , Djaudat Idiyatullin
IPC分类号： G01V3/00
CPC分类号： G01R33/54 , G01N24/081 , G01R33/4616 , G01R33/4816
摘要： A method of magnetic resonance is provided that uses a frequency swept excitation wherein the acquired signal is a time domain signal is provided. In one embodiment, the sweeping frequency excitation has a duration and is configured to sequentially excite isochromats having different resonant frequencies. Acquisition of the time domain signal is done during the duration of the sweeping frequency excitation. The time domain signal is based on evolution of the isochromats.
摘要翻译：提供了一种磁共振的方法，其使用频率扫描激励，其中提供所获取的信号是时域信号。在一个实施例中，扫频频率激励具有持续时间并且被配置为顺序地激发具有不同谐振频率的异色素。在扫描频率激励的持续时间内完成时域信号的采集。时域信号是基于异色素的进化。

4. 发明授权

US4947119A Magnetic resonance imaging and spectroscopy methods 失效
标题翻译：磁共振成像和光谱学方法
公开(公告)号：US4947119A
公开(公告)日：1990-08-07
申请号：US394237
申请日：1989-08-14
申请人： Kamil Ugurbil , Michael Garwood
发明人： Kamil Ugurbil , Michael Garwood
IPC分类号： G01R33/48
CPC分类号： G01R33/446
摘要： Several magnetic resonance imaging (MRI) methods using adiabatic excitation are disclosed. One method accomplishes slice selection with gradient modulated adiabatic excitation. Another method employs slice selection with adiabatic excitation despite large variations in B.sub.1 magnitude. There is also described .sup.1 H spectroscopy using solvent suppressive adiabatic pulses.
摘要翻译：公开了使用绝热激发的几种磁共振成像（MRI）方法。一种方法通过梯度调制绝热激发实现切片选择。另一种方法采用具有绝热激发的切片选择，尽管B1幅度有很大变化。还描述了使用溶剂抑制绝热脉冲的1H光谱。

5. 发明申请

US20150226821A1 SYSTEM AND METHOD FOR GRADIENT-MODULATED SWEEP IMAGING WITH FOURIER TRANSFORMATION MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：用傅立叶变换磁共振成像进行梯度调制扫描的系统和方法
公开(公告)号：US20150226821A1
公开(公告)日：2015-08-13
申请号：US14617616
申请日：2015-02-09
申请人： JINJIN ZHANG , MICHAEL GARWOOD , Djaudat Idiyatullin , CURT CORUM , Naoharu Kobayashi
发明人： JINJIN ZHANG , MICHAEL GARWOOD , Djaudat Idiyatullin , CURT CORUM , Naoharu Kobayashi
IPC分类号： G01R33/561 , G01R33/46 , G01R33/54 , G01R33/48
摘要： Described here are systems and methods for magnetic resonance imaging (“MRI”) using a sweeping frequency excitation applied during a time-varying magnetic field gradient. As an example, a gradient-modulated offset independent adiabaticity (“GOIA”) approach can be used to modify the pattern of the sweeping frequency excitation. Data are acquired as time domain signals and processed to generate images. As an example, the time domain signals are processed using a correlation between a Fourier transform of the gradient-modulated sweeping frequency excitation and a Fourier transform of the time domain signals.
摘要翻译：这里描述了使用在时变磁场梯度期间施加的扫频激励的磁共振成像（“MRI”）的系统和方法。作为示例，可以使用梯度调制偏移独立绝热（“GOIA”）方法来修改扫频激励的模式。数据作为时域信号获取并被处理以产生图像。作为示例，使用梯度调制的扫频频率激励的傅立叶变换和时域信号的傅里叶变换之间的相关来处理时域信号。

6. 发明授权

US07702378B2 Tissue marker for multimodality radiographic imaging 有权
标题翻译：用于多模式放射照相成像的组织标记
公开(公告)号：US07702378B2
公开(公告)日：2010-04-20
申请号：US11281801
申请日：2005-11-17
申请人： Patrick J. Bolan , Michael Garwood , Michael T. Nelson , Daniel A. Halpern
发明人： Patrick J. Bolan , Michael Garwood , Michael T. Nelson , Daniel A. Halpern
IPC分类号： A61B5/05
CPC分类号： A61B90/39 , A61B8/481 , A61B17/3468 , A61B2090/3908 , A61B2090/3925 , A61B2090/3954 , A61B2090/3958 , A61B2090/3966 , A61B2090/397 , A61B2090/3995 , A61K49/0002 , A61K49/0447 , A61K49/18 , A61K49/223 , A61M31/002 , A61M31/005 , G01R33/4812 , G01R33/4814 , G01R33/5601 , H01F41/02 , H01F41/0253 , Y10T29/49075 , Y10T29/49888 , Y10T29/4998 , Y10T29/49982
摘要： An implantable tissue marker incorporates a contrast agent sealed within a chamber in a container formed from a solid material. The contrast agent is selected to produce a change, such as an increase, in signal intensity under magnetic resonance imaging (MRI). An additional contrast agent may also be sealed within the chamber to provide visibility under another imaging modality, such as computed tomographic (CT) imaging or ultrasound imaging.
摘要翻译：可植入组织标记包括密封在由固体材料形成的容器中的腔室内的造影剂。选择造影剂以在磁共振成像（MRI）下产生信号强度的变化，例如增加。还可以在腔室内密封另外的造影剂以提供另一成像模态（例如计算机断层摄影（CT）成像或超声成像）下的可视性。

7. 发明申请

US20060244447A1 Contrast from rotating frame relaxation by adiabatic pulses 有权
标题翻译：对比由绝热脉冲旋转框架松弛
公开(公告)号：US20060244447A1
公开(公告)日：2006-11-02
申请号：US11244815
申请日：2005-10-06
申请人： Shalom Michaeli , Michael Garwood , Kamil Ugurbil , Dennis Sorce
发明人： Shalom Michaeli , Michael Garwood , Kamil Ugurbil , Dennis Sorce
IPC分类号： G01V3/00
CPC分类号： G01R33/446 , G01R33/50
摘要： This document discusses, among other things, a system and method for modulating transverse and longitudinal relaxation time contrast in a rotating frame based on a train of radio frequency pulses.
摘要翻译：本文件尤其涉及一种用于基于一串射频脉冲调制旋转帧中的横向和纵向弛豫时间对比度的系统和方法。

8. 发明授权

US07777484B2 Frequency swept excitation for magnetic resonance 有权
标题翻译：用于磁共振的频率扫描激励
公开(公告)号：US07777484B2
公开(公告)日：2010-08-17
申请号：US12210342
申请日：2008-09-15
申请人： Michael Garwood , Djaudat S. Idiyatullin , Curt Corum , Steen Moeller
发明人： Michael Garwood , Djaudat S. Idiyatullin , Curt Corum , Steen Moeller
IPC分类号： G01V3/00
CPC分类号： G01N24/10 , G01N24/081 , G01R33/441 , G01R33/446 , G01R33/4616 , G01R33/4816 , G01R33/54
摘要： A method of magnetic resonance is provided that uses a frequency swept excitation wherein the acquired signal is a time domain signal is provided. In one embodiment, the method comprises, applying a sweeping frequency excitation and acquiring a time domain signal. The sweeping frequency excitation has a duration and is configured to sequentially excite isochromats having different resonant frequencies. Acquisition of the time domain signal is done during the duration of the sweeping frequency excitation. The time domain signal is based on evolution of the isochromats.
摘要翻译：提供了一种磁共振的方法，其使用频率扫描激励，其中提供所获取的信号是时域信号。在一个实施例中，该方法包括：施加扫频激励并获取时域信号。扫频频率激励具有持续时间并且被配置为顺序地激发具有不同谐振频率的异色素。在扫描频率激励的持续时间内完成时域信号的采集。时域信号是基于异色素的进化。

9. 发明申请

US20090027050A1 FREQUENCY SWEPT EXCITATION FOR MAGNETIC RESONANCE 有权
标题翻译：频磁激励磁共振
公开(公告)号：US20090027050A1
公开(公告)日：2009-01-29
申请号：US12210342
申请日：2008-09-15
申请人： Michael Garwood , Djaudat S. Idiyatullin , Curt Corum , Steen Moeller
发明人： Michael Garwood , Djaudat S. Idiyatullin , Curt Corum , Steen Moeller
IPC分类号： G01R33/48
CPC分类号： G01N24/10 , G01N24/081 , G01R33/441 , G01R33/446 , G01R33/4616 , G01R33/4816 , G01R33/54
摘要： A method of magnetic resonance is provided that uses a frequency swept excitation wherein the acquired signal is a time domain signal is provided. In one embodiment, the method comprises, applying a sweeping frequency excitation and acquiring a time domain signal. The sweeping frequency excitation has a duration and is configured to sequentially excite isochromats having different resonant frequencies. Acquisition of the time domain signal is done during the duration of the sweeping frequency excitation. The time domain signal is based on evolution of the isochromats.
摘要翻译：提供了一种磁共振的方法，其使用频率扫描激励，其中提供所获取的信号是时域信号。在一个实施例中，该方法包括：施加扫频激励并获取时域信号。扫频频率激励具有持续时间并且被配置为顺序地激发具有不同谐振频率的异色素。在扫描频率激励的持续时间内完成时域信号的采集。时域信号是基于异色素的进化。

10. 发明申请

US20050236164A1 Restriction tolerant packer cup 有权
标题翻译：限制容许封隔器杯
公开(公告)号：US20050236164A1
公开(公告)日：2005-10-27
申请号：US11107116
申请日：2005-04-15
申请人： Michael Garwood , Mark Oettli , Frank Espinosa
发明人： Michael Garwood , Mark Oettli , Frank Espinosa
IPC分类号： E21B33/12 , E21B33/126
CPC分类号： E21B33/1208 , E21B33/126
摘要： The present invention relates to a packer cup 5 having a deformable leading edge 20 which moves away from well bore or casing obstructions as the packer cup 5 is moved into a well bore. The anaxisymmetric deformable leading edge 20 can be formed by an angled leading edge 19 which presents only a portion of the leading edge 18 to a well bore obstruction and allows the edge 19 to move past the obstruction with little or no longitudinal force. Another embodiment provides an anaxisymmetric deformable leading interior edge 72 which is unduloid providing alternatively stiff and deformable sections 74, 76 of the edge 72 to move past the obstructions.
摘要翻译：本发明涉及一种封隔器杯5，其具有可变形的前缘20，当封隔器杯5移动到井眼中时，其可移动远离井眼或套管障碍物。不对称可变形的前缘20可以由倾斜的前缘19形成，该前缘19仅将前缘18的一部分提供到井眼障碍物，并且允许边缘19以很小的或没有纵向力移动通过障碍物。另一个实施例提供了一种非对称可变形的引导内部边缘72，其是不平坦的，其提供边缘72的交替地刚性和变形部分74,76以移动经过障碍物。

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