公开(公告)号：US20120169336A1

公开(公告)日：2012-07-05

申请号：US12982704

申请日：2010-12-30

申请人： C. Roger Leigh ,  Ruben Peters

发明人： C. Roger Leigh ,  Ruben Peters

IPC分类号： G01R33/44

CPC分类号： G01R33/285 ,  A61B5/055 ,  A61B5/7203 ,  A61B5/7217 ,  G01R33/56527 ,  G01R33/56536

摘要： A method for generating a new set of MRI images of a region of a recipient in which an implanted medical device having magnetic properties is located. The method includes scanning a plurality of scan slices of the recipient with an MRI machine set at a first fat shift direction to generate a first set of MRI images and rescanning the plurality of scan slices with a fat shift direction different than the first fat shift direction to obtain a second set of MRI images. At least one of the MRI images of the first set and the second set including an artifact resulting from the implanted medical device. The method further includes comparing respective artifacts of the MRI images of the first and second sets, and selecting one of the compared MRI images based on the distortion to the respective MRI image created by the respective artifact.

摘要翻译： 一种用于产生其中具有磁性的植入医疗装置所在的接收者的区域的新的一组MRI图像的方法。 该方法包括用设置在第一脂肪转移方向的MRI机器扫描接收者的多个扫描片段，以产生第一组MRI图像，并且以比第一脂肪转移方向不同的脂肪转移方向重新扫描多个扫描切片 以获得第二组MRI图像。 第一组和第二组的MRI图像中的至少一个包括由植入的医疗装置产生的伪影。 该方法还包括比较第一组和第二组的MRI图像的各个假象，以及基于失真将所比较的MRI图像之一选择为由相应的神器产生的相应MRI图像。

公开(公告)号：US20120133360A1

公开(公告)日：2012-05-31

申请号：US13300922

申请日：2011-11-21

申请人： Kensuke SHINODA ,  Wakai SATOSHI

发明人： Kensuke SHINODA ,  Wakai SATOSHI

IPC分类号： G01R33/46 ,  G01R33/28

CPC分类号： G01R33/4838 ,  G01R33/485 ,  G01R33/543 ,  G01R33/56527 ,  G01R33/56536 ,  G01R33/56563

摘要： In one embodiment, a magnetic resonance diagnosis apparatus includes an application region calculation unit and a data generation unit. The application region calculation unit automatically calculates an application region of a prepulse based on “image data including a region of interest of an object generated by magnetic resonance imaging before application of a prepulse”. The data generation unit applies the prepulse according to the application region automatically calculated by the application region calculation unit, then receives a magnetic resonance signal from a data acquisition region including the region of interest, and generates magnetic resonance spectrum data indicative of concentration distribution per metabolic substance in the region of interest based on the magnetic resonance signal.

摘要翻译： 在一个实施例中，磁共振诊断装置包括应用区域计算单元和数据生成单元。 应用区域计算单元基于“包括在应用前脉冲之前由磁共振成像产生的对象的兴趣区域的图像数据”来自动计算预脉冲的应用区域。 数据生成单元根据由应用区域计算单元自动计算的应用区域应用预脉冲，然后从包括感兴趣区域的数据采集区域接收磁共振信号，并生成表示每代谢浓度分布的磁共振谱数据 基于磁共振信号的感兴趣区域中的物质。

公开(公告)号：US20120126813A1

公开(公告)日：2012-05-24

申请号：US13297509

申请日：2011-11-16

申请人： Dominik Paul

发明人： Dominik Paul

IPC分类号： G01R33/54 ,  G01R33/34

CPC分类号： G01R33/56527 ,  A61B5/055 ,  G01R33/4833

摘要： In a method and magnetic resonance (MR) apparatus to acquire MR data in a predetermined three-dimensional volume segment of an examination subject, the three-dimensional volume segment is selectively excited with an RF excitation pulse, wherein a magnetic field gradient at the same time is switched. Two phase coding gradients and an additional magnetic field gradient are switched for spatial coding and MR data are acquired depending on this. A frequency range of the RF excitation pulse is set depending on resonance frequencies of at least two substances to be acquired within the volume segment, such that a center frequency of the frequency range is caused to be located between the resonance frequencies.

摘要翻译： 在用于在检查对象的预定三维体积段中获取MR数据的方法和磁共振（MR）装置中，三维体积段被选择性地用RF激励脉冲激发，其中相同的磁场梯度 时间被切换。 切换两相编码梯度和附加磁场梯度用于空间编码，并根据此获取MR数据。 RF激励脉冲的频率范围根据在体积段内要获取的至少两种物质的共振频率来设定，使​​得使频率范围的中心频率位于谐振频率之间。

公开(公告)号：US08148981B2

公开(公告)日：2012-04-03

申请号：US12336708

申请日：2008-12-17

申请人： Masao Yui

发明人： Masao Yui

IPC分类号： G01V3/00

CPC分类号： G01R33/561 ,  G01R33/543 ,  G01R33/5614 ,  G01R33/56527 ,  G01R33/56563

摘要： A magnetic resonance imaging apparatus includes an input unit, a data acquisition unit and an image generating unit. The input unit inputs information indicating a matter of which resonance frequency is a center frequency of an excitation pulse. The data acquisition unit acquires magnetic resonance data with obtaining a steady state free precession. Each of the plural excitation pulses has a transmission phase varying by a variation amount determined based on a difference between a resonance frequency and the center frequency. The image generating unit generates an image of the desired matter based on the magnetic resonance data.

摘要翻译： 磁共振成像装置包括输入单元，数据获取单元和图像生成单元。 输入单元输入指示哪个共振频率是激励脉冲的中心频率的信息。 数据采集​​单元获得稳态自由进动的磁共振数据。 多个激励脉冲中的每一个具有根据谐振频率和中心频率之间的差确定的变化量而变化的发送相位。 图像生成单元基于磁共振数据生成所需物体的图像。

公开(公告)号：US07952355B2

公开(公告)日：2011-05-31

申请号：US12362560

申请日：2009-01-30

申请人： Geir Torheim ,  Giovanni Sebastiani

发明人： Geir Torheim ,  Giovanni Sebastiani

IPC分类号： G01V3/00

CPC分类号： G01R33/56 ,  G01R33/4828 ,  G01R33/5601 ,  G01R33/5608 ,  G01R33/5615 ,  G01R33/56527 ,  G01R33/56554

摘要： An MR imaging apparatus is disclosed, wherein the MR imaging apparatus includes a plurality of gradient coils positioned about a bore of a magnet, and an RF transceiver system controlled by a pulse module to transmit RF signals to an RF coil assembly. The MR imaging apparatus also includes a controller coupled to the plurality of gradient coils and the RF transceiver system and programmed to obtain MR image signals at different echo times from a subject containing metabolites having known characteristics. The controller is further programmed to reconstruct images of the metabolites in a selected region of interest (ROI) using a probabilistic mathematical expression based on known information regarding an image acquisition process and using a spatial distribution of the metabolites to account for artifacts in the images.

摘要翻译： 公开了一种MR成像设备，其中MR成像设备包括围绕磁体的孔定位的多个梯度线圈和由脉冲模块控制的RF收发器系统，以将RF信号传输到RF线圈组件。 MR成像设备还包括耦合到多个梯度线圈和RF收发器系统的控制器，并被编程以从包含具有已知特征的代谢物的受试者获得不同回波时间的MR图像信号。 控制器还被编程为使用基于关于图像获取过程的已知信息的概率数学表达来重建所选择的感兴趣区域（ROI）中的代谢物的图像，并且使用代谢物的空间分布来解释图像中的伪影。

公开(公告)号：US07924003B2

公开(公告)日：2011-04-12

申请号：US12104842

申请日：2008-04-17

申请人： Huanzhou Yu ,  Scott B. Reeder

发明人： Huanzhou Yu ,  Scott B. Reeder

IPC分类号： G01V3/00

CPC分类号： G01R33/4828 ,  G01R33/5607 ,  G01R33/56527

摘要： NMR signal contributions from water and fat are separated using a model of the fat resonant frequency spectrum that has multiple resonant peaks. The relative frequencies of the multiple fat spectrum peaks are known a priori and their relative amplitudes are determined using a self-calibration process. With the determined relative amplitudes of the fat spectrum peaks, acquired NMR signals are modeled. Using this model and NMR signal data acquired at a plurality of echo times (TE), the signal contribution from multiple fat spectrum peaks is separated from the acquired NMR signal data. A combined image is alternatively produced from weighted contributions of the separated water and fat images. Additionally, a more accurate estimation of the apparent relaxation time and rate (T*2 and R*2, respectively) is alternatively performed.

摘要翻译： 使用具有多个共振峰的脂肪共振频谱的模型分离水和脂肪的NMR信号贡献。 多个脂肪谱峰的相对频率是先验已知的，它们的相对幅度使用自校准过程来确定。 利用确定的脂肪谱峰的相对幅度，对获得的NMR信号进行建模。 使用在多个回波时间（TE）下获得的该模型和NMR信号数据，从所获取的NMR信号数据中分离来自多个脂肪谱峰的信号贡献。 可以通过分离的水和脂肪图像的加权贡献来产生组合图像。 此外，交替进行表观松弛时间和速率（分别为T * 2和R * 2）的更准确的估计。

公开(公告)号：US20100271023A1

公开(公告)日：2010-10-28

申请号：US12766181

申请日：2010-04-23

申请人： Michael Deimling

发明人： Michael Deimling

IPC分类号： G01R33/48

CPC分类号： G01R33/3415 ,  G01R33/4828 ,  G01R33/5607 ,  G01R33/56527

摘要： A magnetic resonance tomography (MRT) method with spectral fat saturation or spectral water excitation in a tissue region that is to be represented of a patient who is to be examined, includes the following steps: (Step 1) frequency adjustment measurement of a region of a patient that is to be represented with a selected first partial coil of the MRT system, (Step 2) precise determination of the resonance frequency of water with the aid of the spectrum obtained in Step 1 exhibiting the resonance frequencies of fat and water, (Step 3) repetition of Steps 1 and 2 with at least one additionally selected second partial coil of the MRT system adjacent to the first partial coil, (Step 4) measuring of a k space data record with a partial coil or a partial coil combination on the basis of the water resonance frequency assigned to these partial coils, (Step 5) repetition of Step 4 with other partial coils or other partial coil combinations until the entire tissue region to be represented has been measured, (Step 6) combining of the measuring results obtained in Steps 4 and 5, and (Step 7) representing of the results obtained in Step 6 in the image space in the form of an overall image of the tissue region to be represented.

摘要翻译： 在要被检查的患者中表示的组织区域中具有光谱脂肪饱和或光谱水激发的磁共振断层摄影（MRT）方法包括以下步骤：（步骤1） 要用MRT系统的选定的第一部分线圈表示的患者（步骤2）借助于步骤1中获得的表现出脂肪和水的共振频率的光谱来精确测定水的共振频率， 步骤3）利用与第一部分线圈相邻的MRT系统的至少一个附加选择的第二部分线圈重复步骤1和2（步骤4），测量具有局部线圈或部分线圈组合的ak空间数据记录 分配给这些部分线圈的水共振频率的基础（步骤5），用其他部分线圈或其他部分线圈组合重复步骤4，直到要表示的整个组织区域为 （步骤6）组合在步骤4和5中获得的测量结果，以及（步骤7），其以表示要表示的组织区域的整体图像的形式在图像空间中获得的在步骤6中获得的结果 。

公开(公告)号：US07786729B2

公开(公告)日：2010-08-31

申请号：US11931968

申请日：2007-10-31

申请人： Ryan Chamberlain ,  Jang-Yeon Park ,  Michael G. Garwood

发明人： Ryan Chamberlain ,  Jang-Yeon Park ,  Michael G. Garwood

IPC分类号： G01V3/00

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。

公开(公告)号：US20100159300A1

公开(公告)日：2010-06-24

申请号：US12640280

申请日：2009-12-17

申请人： Kerry D. Meinhardt

发明人： Kerry D. Meinhardt

IPC分类号： H01M8/10

CPC分类号： G01R33/485 ,  G01R33/4828 ,  G01R33/5605 ,  G01R33/5607 ,  G01R33/56527 ,  H01M8/0247 ,  H01M8/0273 ,  H01M8/2404 ,  H01M8/2425 ,  Y10T29/49108 ,  Y10T29/4911

摘要： A cassette less SOFC assembly and a method for creating such an assembly. The SOFC stack is characterized by an electrically isolated stack current path which allows welded interconnection between frame portions of the stack. In one embodiment electrically isolating a current path comprises the step of sealing a interconnect plate to a interconnect plate frame with an insulating seal. This enables the current path portion to be isolated from the structural frame an enables the cell frame to be welded together.

摘要翻译： 一种较小的SOFC组件及其制造方法。 SOFC堆叠的特征在于电隔离的堆叠电流路径，其允许堆叠的框架部分之间的焊接互连。 在一个实施例中，电隔离电流路径包括将互连板密封到具有绝缘密封件的互连板框架的步骤。 这使得电流路径部分能够与结构框架隔离，使得电池框架能够被焊接在一起。

公开(公告)号：US07375522B2

公开(公告)日：2008-05-20

申请号：US11510896

申请日：2006-08-28

申请人： Scott B. Reeder

发明人： Scott B. Reeder

IPC分类号： G01V3/00

CPC分类号： G06T11/00 ,  G01R33/4828 ,  G01R33/5607 ,  G01R33/5616 ,  G01R33/56527 ,  G01R33/56554

摘要： A water and fat image are acquired using a pulse sequence in which NMR signals for one image data set are acquired with a readout gradient of one polarity and NMR signals for the other image data set are acquired with a readout gradient of the opposite polarity. A misalignment of fat signals caused by chemical shift is corrected by calculating separate water and fat image data sets in k-space and then transforming them to real space images.

摘要翻译： 使用脉冲序列获取水和脂肪图像，其中以一个极性的读出梯度获取一个图像数据集的NMR信号，并以相反极性的读出梯度获取另一图像数据集的NMR信号。 通过在k空间中计算单独的水和脂肪图像数据集，然后将其转换为实际空间图像来校正由化学位移引起的脂肪信号的未对准。