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1. 发明申请

US20060116570A1 Reducing effects of rotational motion 有权
标题翻译：减少旋转运动的影响
公开(公告)号：US20060116570A1
公开(公告)日：2006-06-01
申请号：US11224822
申请日：2005-09-13
申请人： Jeffrey Duerk , Ajit Shankaranarayanan , Michael Wendt , Jonathan Lewin
发明人： Jeffrey Duerk , Ajit Shankaranarayanan , Michael Wendt , Jonathan Lewin
IPC分类号： A61B5/05
CPC分类号： A61B5/055 , A61B5/7207 , G01R33/56509
摘要： A method and system for improving image quality by correcting errors introduced by rotational motion of an object being imaged is provided. The object is associated with a fiducial mark. The method provides a computer executable methodology for detecting a rotation and selectively reordering, deleting and/or reacquiring projection data.
摘要翻译：提供了一种通过校正由成像对象的旋转运动引入的误差来提高图像质量的方法和系统。对象与基准标记相关联。该方法提供了用于检测旋转和选择性重排序，删除和/或重新获取投影数据的计算机可执行方法。

2. 发明申请

US20060116574A1 Extended-coverage imaging coil 有权
标题翻译：扩展覆盖成像线圈
公开(公告)号：US20060116574A1
公开(公告)日：2006-06-01
申请号：US11000250
申请日：2004-11-30
申请人： Eddy Wong , Claudia Hillenbrand , Jonathan Lewin , Jeffrey Duerk
发明人： Eddy Wong , Claudia Hillenbrand , Jonathan Lewin , Jeffrey Duerk
IPC分类号： A61B6/00 , A61M25/00
CPC分类号： G01R33/34084 , G01R33/287 , G01R33/34053 , G01R33/341
摘要： Extended-coverage magnetic resonance imaging coils with optimized homogeneity in longitudinal sensitivity are described. One exemplary coil includes four elements, where two of the elements are opposed-solenoid imaging elements and two of the elements are single loop imaging elements.
摘要翻译：描述了具有优化的纵向灵敏度均匀性的扩展覆盖磁共振成像线圈。一个示例性线圈包括四个元件，其中两个元件是相对的电磁成像元件，并且两个元件是单环成像元件。

3. 发明申请

US20050017717A1 Chemical species suppression for MRI imaging using spiral trajectories with off-resonance correction 有权
标题翻译：使用具有偏共振校正的螺旋轨迹进行MRI成像的化学物种抑制
公开(公告)号：US20050017717A1
公开(公告)日：2005-01-27
申请号：US10805841
申请日：2004-03-22
申请人： Jeffrey Duerk , Jonathan Lewin , Hisamoto Moriguchi
发明人： Jeffrey Duerk , Jonathan Lewin , Hisamoto Moriguchi
IPC分类号： G01R33/54 , G01R33/565 , G01V3/00
CPC分类号： G01R33/4828 , G01R33/56563
摘要： A method of chemical species suppression for MRI imaging of a scanned object region including acquiring K space data at a first TE, acquiring K space data at a second TE, reconstructing images having off resonance effects, estimating off resonance effects at locations throughout the reconstructed image, and determining the first and second chemical species signals at image locations of the scanned object from the acquired signals and correcting for blurring resulting from off resonance effects due to B0 inhomogeneity.
摘要翻译：一种用于扫描对象区域的MRI成像的化学物质抑制方法，包括在第一TE获取K空间数据，在第二TE获取K空间数据，重建具有截止共振效应的图像，估计整个重建图像的位置处的共振效应并且从所获取的信号确定被扫描物体的图像位置处的第一和第二化学物种信号，并校正由于B0不均匀性引起的共振效应引起的模糊。

4. 发明授权

US09031634B2 Chemical shift markers for improved wireless fiducial marker tracking 有权
标题翻译：用于改进无线基准标记跟踪的化学位移标记
公开(公告)号：US09031634B2
公开(公告)日：2015-05-12
申请号：US10514307
申请日：2003-05-15
申请人： Christopher Flask , Jonathan Lewin , Daniel Elgort , Ken Pin Wang , Eddy Wong , Jeffrey Duerk
发明人： Christopher Flask , Jonathan Lewin , Daniel Elgort , Ken Pin Wang , Eddy Wong , Jeffrey Duerk
IPC分类号： A61B5/055 , G01R33/28 , A61B19/00 , A61B5/06
CPC分类号： G01R33/285 , A61B5/055 , A61B5/06 , A61B90/39 , A61B2090/3954
摘要： A new and improved method for tracking and/or spatial localization of an invasive device in Magnetic Resonance Imaging (MRI) is provided. The invention includes providing an invasive device including a marker having a chemically shifted signal source with a resonant frequency different from the chemical species of the subject to be imaged, applying a pulse sequence, detecting the resulting RF magnetic resonance signals, and determining the 3D coordinates of the marker. The invention also includes generating scan planes and reconstructing an image from the detected signals to generate an image having the marker contrasted from the subject. The invasive device includes a marker having a chemically shifted signal source which has a resonant frequency different from the chemical species of the subject to be imaged for use in tracking the device during imaging.
摘要翻译：提供了一种用于磁共振成像（MRI）中的侵入性装置的跟踪和/或空间定位的新的和改进的方法。本发明包括提供一种侵入性装置，其包括具有化学位移信号源的标记物，其具有不同于待成像对象的化学物质的共振频率，应用脉冲序列，检测所得到的RF磁共振信号，以及确定3D坐标的标记。本发明还包括产生扫描平面并从检测到的信号重建图像以产生具有与被摄体对比的标记的图像。侵入性装置包括具有化学位移信号源的标记，其具有与被成像对象的化学物种不同的共振频率，以用于在成像期间跟踪装置。

5. 发明申请

US20060184003A1 Intra-procedurally determining the position of an internal anatomical target location using an externally measurable parameter 审中-公开
标题翻译：使用外部可测量参数在手术前确定内部解剖学目标位置的位置
公开(公告)号：US20060184003A1
公开(公告)日：2006-08-17
申请号：US11050155
申请日：2005-02-03
申请人： Jonathan Lewin , Daniel Elgort , Frank Wacker , Frank Sauer , Ali Khamene , Jeffrey Duerk
发明人： Jonathan Lewin , Daniel Elgort , Frank Wacker , Frank Sauer , Ali Khamene , Jeffrey Duerk
IPC分类号： A61B5/05
CPC分类号： G01R33/54 , A61B2090/364 , G01R33/285 , G01R33/286 , G06T7/246 , G06T7/73 , G06T2207/30004
摘要： Systems, methodologies, media, and other embodiments associated with facilitating intra-procedurally determining the position of an internal anatomical target location using an externally measurable parameter are described. One exemplary method embodiment includes pre-procedurally correlating internal anatomy motion with external marker motion. The example method may also include providing computer graphics to an augmented reality system during a percutaneous procedure to facilitate image guiding an interventional device with respect to the internal anatomy.
摘要翻译：描述了使用外部可测量参数促进程序内确定内部解剖学目标位置的位置的系统，方法，介质和其他实施例。一个示例性方法实施例包括在程序前将内部解剖运动与外部标记运动相关联。示例性方法还可以包括在经皮过程期间向增强现实系统提供计算机图形以便于相对于内部解剖结构引导介入装置的图像引导。

6. 发明申请

US20050054914A1 MRI probe designs for minimally invasive intravascular tracking and imaging applications 有权
标题翻译：用于微创血管内跟踪和成像应用的MRI探针设计
公开(公告)号：US20050054914A1
公开(公告)日：2005-03-10
申请号：US10839922
申请日：2004-05-05
申请人： Jeffrey Duerk , Daniel Elgort , Chris Flask , Claudia Hillenbrand , Jonathan Lewin , Eddy Wong
发明人： Jeffrey Duerk , Daniel Elgort , Chris Flask , Claudia Hillenbrand , Jonathan Lewin , Eddy Wong
IPC分类号： G01R33/28 , G01R33/563 , G06T11/00 , A61B5/05
CPC分类号： G01R33/287 , G01R33/563
摘要： A probe suitable for attachment to, or incorporation in, a medical interventional device, such as a catheter, and which may be employed for tracking, imaging, or both, includes a first material having an MR resonance frequency distinct from a resonance frequency of a second material adjacent to the first material. The probe may include one or more coils, or it may be wireless, that is, it may have no coils. Some probe configurations are directed at tracking or imaging of vascular vessels or tissue, and configurations allow both tracking and imaging.
摘要翻译：适于附着或并入医疗介入装置（例如导管）中并且可用于跟踪，成像或两者的探针包括具有与共振频率不同的MR共振频率的第一材料与第一材料相邻的第二材料。探头可以包括一个或多个线圈，或者它可以是无线的，即它可以没有线圈。一些探针配置针对血管或组织的跟踪或成像，并且配置允许跟踪和成像。

7. 发明申请

US20060181275A1 Brorc-S2PD 有权
公开(公告)号：US20060181275A1
公开(公告)日：2006-08-17
申请号：US11058517
申请日：2005-02-15
申请人： Hisamoto Moriguchi , Jonathan Lewin , Jeffrey Duerk
发明人： Hisamoto Moriguchi , Jonathan Lewin , Jeffrey Duerk
IPC分类号： G01V3/00
CPC分类号： G01R33/4828
摘要： Systems, methodologies, media, and other embodiments associated with a block-by-block off-resonance frequency estimation method are described. One exemplary method embodiment includes calculating a field map from local B0 off resonance frequency estimates. The example method may also include performing water-fat decomposition and signal de-blurring based on the calculated map.
摘要翻译：描述了与块逐块非共振频率估计方法相关联的系统，方法，介质和其他实施例。一个示例性方法实施例包括从局部B 0共振频率估计值计算场映射。该示例方法还可以包括基于所计算的图来执行水分解和信号去模糊。

8. 发明申请

US20050057249A1 Optimal magnetic resonance data acquisition 有权
标题翻译：最优磁共振数据采集
公开(公告)号：US20050057249A1
公开(公告)日：2005-03-17
申请号：US10847224
申请日：2004-05-17
申请人： Brian Dale , Jeffrey Duerk , Jonathan Lewin
发明人： Brian Dale , Jeffrey Duerk , Jonathan Lewin
IPC分类号： G01R33/54 , G01V3/00
CPC分类号： G01R33/54 , G01R33/543
摘要： A magnetic resonance data acquisition method includes designating a plurality of parameters that are representative of conditions for acquiring data from a magnetic resonance apparatus, at least one of the parameters being variable; designating at least one objective function measuring the quality of the acquired magnetic resonance data; optimizing the at least one objective function using an optimization algorithm to find at least one set of optimum values for the parameters characterizing data acquisition; configuring the magnetic resonance apparatus with the parameters determined above, configuring by one set of the optimum values of the parameters, and instructing a magnetic resonance imaging apparatus to apply the field to the target of the data acquisition to acquire the data.
摘要翻译：磁共振数据获取方法包括指定表示用于从磁共振装置获取数据的条件的多个参数，所述参数中的至少一个是可变的; 指定至少一个测量所获得的磁共振数据的质量的目标函数; 使用优化算法优化所述至少一个目标函数，以找到表征数据采集的参数的至少一组最优值; 通过上述确定的参数来配置磁共振设备，通过一组参数的最佳值进行配置，并指示磁共振成像设备将场应用于数据采集的目标以获取数据。

9. 发明申请

US20050054913A1 Adaptive tracking and MRI-guided catheter and stent placement 审中-公开
标题翻译：自适应跟踪和MRI导向导管和支架放置
公开(公告)号：US20050054913A1
公开(公告)日：2005-03-10
申请号：US10839861
申请日：2004-05-05
申请人： Jeffrey Duerk , Daniel Elgort , Chris Flask , Claudia Hillenbrand , Jonathan Lewin , Frank Wacker , Eddy Wong
发明人： Jeffrey Duerk , Daniel Elgort , Chris Flask , Claudia Hillenbrand , Jonathan Lewin , Frank Wacker , Eddy Wong
IPC分类号： G01R33/28 , G01R33/563 , G06T11/00 , A61B5/05
CPC分类号： G01R33/287 , G01R33/563
摘要： A method of automatically adjusting at least one MR image parameter for an interventional procedure includes adaptively tracking an MR micro-coil catheter and automatically updating an imaging scan plane's position and orientation, as well as other features including, but not limited to, field-of-view, resolution, temporal resolution, slice thickness, tip angle, and TE. The disclosed system provides a more natural interface for a physician operating the MR scanner during an interventional procedure. The scanner can react to changes in the clinical environment and automatically adjust a number of image parameters. For example, during catheter insertion, images are acquired at lower resolutions, and possibly larger fields of view, to help facilitate faster updates and tracking. Once the catheter reaches a target area in the tissue and its motion slows, an MR image of higher resolution, and possibly lower field of view, is acquired.
摘要翻译：自动调整用于介入手术的至少一个MR图像参数的方法包括自适应跟踪MR微线圈导管并自动更新成像扫描平面的位置和取向，以及其它特征，包括但不限于：视图，分辨率，时间分辨率，切片厚度，尖角和TE。所公开的系统为在介入过程期间操作MR扫描仪的医生提供更自然的界面。扫描仪可以对临床环境的变化做出反应，并自动调整多个图像参数。例如，在导管插入期间，以较低分辨率和可能更大的视野获取图像，以帮助促进更快速的更新和跟踪。一旦导管到达组织中的目标区域并且其运动减慢，则获得更高分辨率和可能较低视野的MR图像。

10. 发明申请

US20050033153A1 Dixon Techniques in spiral trajectories with off-resonance correction 有权
标题翻译： Dixon技术在具有偏共振校正的螺旋轨迹中
公开(公告)号：US20050033153A1
公开(公告)日：2005-02-10
申请号：US10832659
申请日：2004-04-26
申请人： Hisamoto Moriguchi , Jonathan Lewin , Jeffrey Duerk
发明人： Hisamoto Moriguchi , Jonathan Lewin , Jeffrey Duerk
IPC分类号： G01R33/54 , G01R33/565 , A61B5/05
CPC分类号： G01R33/565 , G01R33/4828 , G01R33/56563
摘要： Spiral imaging has recently gained acceptance for rapid MR data acquisition. One of the main disadvantages of spiral imaging, however, is blurring artifacts due to off-resonance effects. Dixon techniques have been developed as methods of water-fat signal decomposition in rectilinear sampling schemes, and they can produce unequivocal water-fat signal decomposition even in the presence of B0 inhomogeneity. Three-point and two-point Dixon techniques can be extended to conventional spiral and variable-density spiral data acquisitions for unambiguous water-fat decomposition with off-resonance blurring correction. In the spiral three-point Dixon technique, water-fat signal decomposition and image deblurring are performed based on the frequency maps that are directly derived from the acquired images. In the spiral two-point Dixon technique, several predetermined frequencies are tested to create a frequency map. The techniques can achieve more effective and more uniform fat signal suppression when compared to the conventional spiral acquisition method with SPSP pulses.
摘要翻译：螺旋成像最近已经获得了快速MR数据采集的认可。然而，螺旋成像的主要缺点之一是由于共振效应引起的模糊伪影。已经开发了狄克逊技术作为直线取样方案中水脂信号分解的方法，即使在B0不均匀的情况下也能产生明确的水脂信号分解。三点和二点Dixon技术可以扩展到常规螺旋和可变密度螺旋数据采集，用于明确的水分解与非共振模糊校正。在螺旋三点Dixon技术中，基于从所获取的图像直接导出的频率图执行水脂信号分解和图像去模糊。在螺旋二点Dixon技术中，测试了几个预定频率以创建频率图。与使用SPSP脉冲的常规螺旋采集方法相比，该技术可以实现更有效和更均匀的脂肪信号抑制。

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