公开(公告)号：US20020198450A1

公开(公告)日：2002-12-26

申请号：US10152895

申请日：2002-05-21

申请人： Siemens Aktiengesellschaft

发明人： Arne Reykowski

IPC分类号： A61B005/055 ,  G01V003/00

CPC分类号： G01R33/34053 ,  G01R33/341 ,  G01R33/3664

摘要： High-frequency coil arrangement for a magnetic resonance tomography apparatus and magnetic resonance tomography apparatus employing such an arrangement have a surface coil and a loop coil for enclosing the examination subject. Both coils are fashioned for receiving the same first polarization component. A switching device is present for alternately deactivating and/or activating the surface coil and the loop coil. The two coils are preferably arranged on a common carrier structure that is bendable.

摘要翻译： 用于磁共振断层摄影装置的高频线圈装置和采用这种布置的磁共振断层摄影装置具有用于封闭检查对象的表面线圈和环形线圈。 两个线圈都被设计成用于接收相同的第一偏振分量。 存在用于交替地去激活和/或激活表面线圈和环形线圈的开关装置。 两个线圈优选地布置在可弯曲的公共载体结构上。

公开(公告)号：US20020193684A1

公开(公告)日：2002-12-19

申请号：US10162529

申请日：2002-06-03

发明人： Carl M. Anderson ,  Steven Bradley Lowen ,  Perry F. Renshaw ,  Martin H. Teicher ,  Luis C. Maas III

IPC分类号： A61B005/055

CPC分类号： A61B5/055 ,  A61B5/16

摘要： A method of determining an optimal drug dosage to treat a physiological condition includes objectively determining in a patient the presence and/or level of a physiological condition, such as ADHD, treating the patient with varying doses of the drug, and determining the optimal drug dosage based upon fMRI results.

摘要翻译： 确定用于治疗生理状况的最佳药物剂量的方法包括在患者中客观地确定生理状况的存在和/或水平，例如ADHD，用不同剂量的药物治疗患者，以及确定最佳药物剂量 基于fMRI结果。

公开(公告)号：US20020188191A1

公开(公告)日：2002-12-12

申请号：US10164502

申请日：2002-06-06

申请人： Cornell Research Foundation, Inc.

发明人： Vladimir N. Kolmogorov ,  Yi Wang ,  Ramin Zabih

IPC分类号： A61B005/055 ,  G06F017/00

CPC分类号： A61B5/7289 ,  A61B5/055 ,  G01R33/5608 ,  G01R33/5676

摘要： An efficient navigator method is presented that substantially increases the scan efficiency while maintaining the motion suppression effectiveness in magnetic resonance imaging. The method is achieved by simultaneously acquiring different image volumes at different motion states of the subject being scanned. A scheduling algorithm is used to assign volumes to position bins of a motion histogram of the subject. The motion histogram is periodically updated and the volumes are reassigned to position bins.

摘要翻译： 提出了一种有效的导航仪方法，其显着提高了扫描效率，同时保持了磁共振成像中的运动抑制效果。 该方法通过在被扫描的对象的不同运动状态下同时获取不同的图像体积来实现。 调度算法用于将卷分配给对象的运动直方图的位置仓。 周期性更新运动直方图，并将卷重新分配到位置仓。

公开(公告)号：US20020120190A1

公开(公告)日：2002-08-29

申请号：US09791882

申请日：2001-02-26

发明人： Hsu Chang

IPC分类号： A61B005/055

CPC分类号： A61B5/7285 ,  A61B5/0456 ,  A61B5/055 ,  G01R33/283 ,  G01R33/5673

摘要： An MRI imaging system provides an audible feedback signal in the gantry room triggered by a physiological sensor on the patient. The feedback signal is a sound generated by one of the MRI gradient coils. The sensor output signal may be indicative of the patient's heartbeat, or other physiological event. The application of the sequence causes the coil to emit a sound that is associated with the sensor output signal.

摘要翻译： MRI成像系统在由病人的生理传感器触发的台架室中提供可听见的反馈信号。 反馈信号是由MRI梯度线圈之一产生的声音。 传感器输出信号可以指示患者的心跳或其他生理事件。 序列的应用使得线圈发出与传感器输出信号相关联的声音。

公开(公告)号：US20020095085A1

公开(公告)日：2002-07-18

申请号：US09728071

申请日：2000-11-30

发明人： Manojkumar Saranathan ,  Christopher J. Hardy ,  Thomas K.F. Foo

IPC分类号： A61B005/055

CPC分类号： G01R33/56509 ,  A61B5/0037 ,  A61B5/055 ,  A61B5/7285 ,  G01R33/56 ,  G01R33/5673

摘要： A system and method is disclosed for tracking a moving object using magnetic resonance imaging. The technique includes acquiring a scout image scan having a number of image frames and extracting non-linear motion parameters from the number of image frames of the scout image scan. The technique includes prospectively shifting slice location using the non-linear motion parameters between slice locations while acquiring a series of MR images. The system and method are particularly useful in tracking coronary artery movement during the cardiac cycle to acquire the non-linear components of coronary artery movement during a diastolic portion of the R-R interval.

摘要翻译： 公开了一种使用磁共振成像跟踪运动物体的系统和方法。 该技术包括获取具有多个图像帧的侦察图像扫描，并从侦察图像扫描的图像帧的数量中提取非线性运动参数。 该技术包括使用切片位置之间的非线性运动参数前进移位切片位置，同时获取一系列MR图像。 该系统和方法在心脏周期期间跟踪冠状动脉运动特别有用，以在R-R间期的舒张期期间获得冠状动脉运动的非线性分量。

公开(公告)号：US20020077539A1

公开(公告)日：2002-06-20

申请号：US09738423

申请日：2000-12-15

发明人： Berndt P. Schmit ,  Mark Keeton ,  Ben Babusis

IPC分类号： A61B005/055

CPC分类号： A61B6/0442 ,  A61B5/055

摘要： A restraining apparatus and method for limiting motion on the macro and micro scale during MRI and CT scans, by providing a custom fit, while also improving patient comfort. The restraining apparatus includes a disposable component, including castable and expandable sleeves used to fix the patient into a coil. The castable sleeve encircles the limb of a patient, and is filled with a quickly casting material. The cast material is patient compatible and preferably designed to augment imaging. The resulting cast is MRI compatible, safe and rapid setting, which will decrease the time to set up a patient for scanning, thereby further improving MRI productivity. The expandable sleeve encircles the castable sleeve and is inflatable such that the expandable sleeve conforms to the inner dimensions of a particular MRI coil, CT scanner, or other imaging device. Alternatively, the apparatus includes a castable sleeve for casting around a flex/wrap or surface coil. The surface coil is first cast around the limb of a patient, then the patient is fixed to the magnet.

摘要翻译： 一种限制装置和方法，用于通过提供定制配合来限制MRI和CT扫描期间宏观和微观尺度的运动，同时还改善患者的舒适度。 约束装置包括一次性部件，包括用于将患者固定到线圈中的可浇铸和可膨胀的套筒。 浇注套筒环绕患者的肢体，并且填充有快速浇铸材料。 铸造材料是患者兼容的，并且优选地被设计成增加成像。 所得到的铸件是MRI兼容的，安全和快速的设置，这将减少设置病人扫描的时间，从而进一步提高MRI生产力。 可膨胀套筒环绕浇注套管并且可充气，使得可膨胀套筒符合特定MRI线圈，CT扫描器或其它成像装置的内部尺寸。 或者，该装置包括用于围绕柔性/包裹或表面线圈铸造的可浇铸套筒。 表面线圈首先围绕患者的肢体浇铸，然后将患者固定在磁体上。

公开(公告)号：US20020055682A1

公开(公告)日：2002-05-09

申请号：US10034266

申请日：2001-10-19

发明人： David M. Griffiths ,  Arthur E. Uber III

IPC分类号： A61B005/055 ,  A61B008/14

CPC分类号： A61M5/14546 ,  A61B8/481 ,  A61M5/007

摘要： A system for delivery of a medium having ultrasound contrast enhancement agents therein to a patient includes a pressurizing device for pressurizing the medium, a fluid path connecting the pressurizing device to the patient and a concentration sensor in communication with the fluid path. The concentration of the contrast enhancement agents is measured by the concentration sensor during injection of the medium into the patient to assist in controlling the delivery system and/or an imaging procedure.

摘要翻译： 用于将具有超声造影增强剂的介质输送到患者的系统包括用于对介质加压的加压装置，将加压装置连接到患者的流体路径和与流体路径连通的浓度传感器。 通过浓度传感器在将介质注射到患者体内以帮助控制递送系统和/或成像过程时测量对比度增强剂的浓度。

公开(公告)号：US20020055677A1

公开(公告)日：2002-05-09

申请号：US10001723

申请日：2001-10-31

发明人： Ho T. Kim

IPC分类号： A61B005/055

CPC分类号： A61B5/055

摘要： A radio frequency coil for a magnetic resonance image apparatus includes a first support frame provided with a first coil, a second support frame opposing the first support frame and provided with a second coil, a gap adjuster for adjusting a gap between the first and second support frames according to the size of a specimen, and a frequency sustainer for sustaining a resonance frequency set according to change of the gap. The magnetic resonance image apparatus adopting the radio frequency coil alleviates impatience of a patient, to thereby enable rejection of patients with respect to the magnetic resonance image apparatus to be solved. Also, the magnetic resonance image apparatus enables a patient to be taken a photograph and simultaneously operated. In addition, the second support frame can be moved to reduce a gap between the first and second support frames to thereby greatly improve quality of an image.

摘要翻译： 一种用于磁共振图像装置的射频线圈包括：第一支撑框架，设置有第一线圈;第二支撑框架，与第一支撑框架相对并设置有第二线圈;间隙调节器，用于调节第一和第二支撑件之间的间隙 根据样本的尺寸的帧，以及用于维持根据间隙的变化设定的共振频率的频率维持器。 采用射频线圈的磁共振图像装置减轻了患者的不耐烦，从而能够抑制患者相对于待解决的磁共振成像装置。 此外，磁共振图像设备使患者能够拍摄照片并同时操作。 此外，可以移动第二支撑框架以减小第一和第二支撑框架之间的间隙，从而大大提高图像的质量。

公开(公告)号：US20020055676A1

公开(公告)日：2002-05-09

申请号：US09966402

申请日：2001-09-28

发明人： Johannes Jacobus Van Vaals ,  Frederik Visser

IPC分类号： A61B005/055

CPC分类号： G01R33/561 ,  G01R33/28 ,  G01R33/56308

摘要： A magnetic resonance method for forming a fast dynamic image from a plurality of signals of an RF probe is described. The RF probe is moved relative to an object to be imaged so as to acquire at least two adjacent Fields-of-View (FOV) which are reconstructed so as to form an image of a region of interest which includes both FOVs. The object to be imaged is scanned by a moving RF antenna. Furthermore, the first FOV is centered at the initial probe position and after each subsequent scan the position of the imaging field within the actual FOV is determined. From that data the next position of the RF probe relative to the object is computed and, if the imaging field runs out of the actual FOV, the RF antenna is moved to the estimated next position of the RF probe so that the subsequent FOV is centered again at the RF probe position. A composite image is then generated from the successive images of the various adjacent FOVs.

摘要翻译： 描述了用于从RF探针的多个信号形成快速动态图像的磁共振方法。 RF探针相对于要被成像的物体移动，以获得至少两个相邻的视场（FOV），其被重构以形成包括两个FOV的感兴趣区域的图像。 要被成像的物体被移动的RF天线扫描。 此外，第一FOV以初始探针位置为中心，并且在每次后续扫描之后，确定在实际FOV内的成像场的位置。 根据该数据计算RF探针相对于物体的下一个位置，并且如果成像场用完实际FOV，则将RF天线移动到RF探测器的估计的下一个位置，以便随后的FOV居中 再次在RF探针位置。 然后从各种相邻FOV的连续图像生成合成图像。

公开(公告)号：US20020045815A1

公开(公告)日：2002-04-18

申请号：US09453421

申请日：1999-12-02

发明人： JOHANNES J. VAN VAALS

IPC分类号： A61B005/055

CPC分类号： G01R33/285 ,  G01R33/281

摘要： A magnetic resonance imaging (MRI) system is provided with an interventional instrument with an indicator element (5) which influences, for example locally disturbs, the magnetic resonance image. The position of the interventional instrument within the patient to be examined is derived from the local disturbances in the image as caused by the interventional instrument. The degree of influencing of the magnetic resonance image is adjustable notably by rotation of the interventional instrument with the indicator element relative to the direction of the steady magnetic field of the magnetic resonance imaging system. For example, the indicator element is a paramagnetic strip which may include several segments of different magnetic susceptibility.

摘要翻译： 磁共振成像（MRI）系统设置有介导仪器，其具有影响例如局部扰动磁共振图像的指示元件（5）。 介入仪器在待检查患者中的位置来源于介入仪器引起的图像局部紊乱。 磁共振图像的影响程度可以通过介导仪器与指示元件相对于磁共振成像系统的稳定磁场的方向的旋转来进行调节。 例如，指示元件是顺磁条，其可以包括不同磁化率的几个段。