-
公开(公告)号：US20080024127A1
公开(公告)日：2008-01-31
申请号：US11662108
申请日：2005-09-02
IPC分类号： G01V3/18
CPC分类号： A61B5/055 , G01R33/56375
摘要： A magnetic resonance imaging apparatus comprises static magnetic field generating means for generating a static magnetic field in an imaging space, a gradient magnetic field generating means for generating a gradient magnetic field in the imaging space, high-frequency magnetic field generating means for generating a high-frequency magnetic field so as to induce nuclear magnetic resonance in a subject placed in the imaging space, signal receiving means for detecting a nuclear magnetic resonance signal from the subject, signal processing means for reconstructing an image by using the detected nuclear magnetic resonance signal, display means for displaying the image, a table for placing the subject thereon to dispose the subject in the imaging means, and table moving means for moving the table on which the subject is placed. While moving the portions to be imaged of the subject continuously or stepwise in the imaging space and disposing the subject, a whole-body image of a large region of the subject is created. The magnetic resonance imaging apparatus further comprises means for detecting information on the displacement of the subject from a desired position and setting means for setting movement information on the table according to the displacement information. The table moving means moves the table according to the movement information set by the setting means to capture the whole-body image.
摘要翻译： 磁共振成像装置包括用于在成像空间中产生静磁场的静磁场产生装置，用于在成像空间中产生梯度磁场的梯度磁场产生装置，用于产生高电平的高频磁场产生装置 频率磁场，以便在放置在成像空间中的对象中引起核磁共振，用于检测来自对象的核磁共振信号的信号接收装置，用于通过使用检测到的核磁共振信号重建图像的信号处理装置， 用于显示图像的显示装置，用于将被摄体放置在其上以将被摄体置于成像装置中的台子以及用于移动放置被摄体的台的台移动装置。 在成像空间中连续或逐步移动被摄体的成像部分并配置被摄体的同时，创建被检体的大区域的全身图像。 磁共振成像装置还包括用于检测来自所需位置的被摄体的位移的信息的装置和用于根据位移信息设置在桌子上的移动信息的设定装置。 桌子移动装置根据由设置装置设置的移动信息移动桌子以捕获全身图像。
-
2.发明授权Magnetic resonance imaging apparatus and method with adjustment in positioning within imaging space to correct deviation from desired position 有权磁共振成像装置和方法，其调整成像空间内的定位以校正与期望位置的偏差公开(公告)号：US07486076B2
公开(公告)日：2009-02-03
申请号：US11662108
申请日：2005-09-02
IPC分类号： G01V3/00
CPC分类号： A61B5/055 , G01R33/56375
摘要： An MRI apparatus and method are provided which are capable of properly setting imaging position of regions of a subject on a table and moving the table to the set positions, for imaging a wide range or the entire body range of the subject.
摘要翻译： 提供了一种MRI装置和方法，其能够将桌子上的区域的成像位置适当地设置在桌子上并将桌子移动到设定位置，以对被摄体的宽范围或整个身体范围进行成像。
-
公开(公告)号：US07768263B2
公开(公告)日：2010-08-03
申请号：US12331005
申请日：2008-12-09
IPC分类号： G01V3/00
CPC分类号： A61B5/055 , G01R33/56375
摘要： A magnetic resonance imaging apparatus comprises static magnetic field generating means for generating a static magnetic field in an imaging space, a gradient magnetic field generating means for generating a gradient magnetic field in the imaging space, high-frequency magnetic field generating means for generating a high-frequency magnetic field so as to induce nuclear magnetic resonance in a subject placed in the imaging space, signal receiving means for detecting a nuclear magnetic resonance signal from the subject, signal processing means for reconstructing an image by using the detected nuclear magnetic resonance signal, display means for displaying the image, a table for placing the subject thereon to dispose the subject in the imaging means, and table moving means for moving the table on which the subject is placed.While moving the portions to be imaged of the subject continuously or stepwise in the imaging space and disposing the subject, a whole-body image of a large region of the subject is created.The magnetic resonance imaging apparatus further comprises means for detecting information on the displacement of the subject from a desired position and setting means for setting movement information on the table according to the displacement information.The table moving means moves the table according to the movement information set by the setting means to capture the whole-body image.
摘要翻译： 磁共振成像装置包括用于在成像空间中产生静磁场的静磁场产生装置，用于在成像空间中产生梯度磁场的梯度磁场产生装置，用于产生高电平的高频磁场产生装置 频率磁场，以便在放置在成像空间中的对象中引起核磁共振，用于检测来自对象的核磁共振信号的信号接收装置，用于通过使用检测到的核磁共振信号重建图像的信号处理装置， 用于显示图像的显示装置，用于将被摄体放置在其上以将被摄体置于成像装置中的台子以及用于移动放置被摄体的台的台移动装置。 在成像空间中连续或逐步移动被摄体的成像部分并配置被摄体的同时，创建被检体的大区域的全身图像。 磁共振成像装置还包括用于检测来自所需位置的被摄体的位移的信息的装置和用于根据位移信息设置在桌子上的移动信息的设定装置。 桌子移动装置根据由设置装置设置的移动信息移动桌子以捕获全身图像。
-
公开(公告)号：US20100219828A1
公开(公告)日：2010-09-02
申请号：US12159177
申请日：2006-12-26
申请人： Tetsuhiko Takahashi , Takayuki Abe , Hisako Nagao
发明人： Tetsuhiko Takahashi , Takayuki Abe , Hisako Nagao
IPC分类号： G01R33/48
CPC分类号： G01R33/56375 , A61B5/0555 , A61B5/7257 , G01R33/56383 , G01R33/5676
摘要： A magnetic resonance imaging apparatus comprises object placing means for placing an object in an imaging space, translating means for translating the object in a given direction by translating the object placing means in the given direction continuously or step-wise, magnetic field generating means for exciting the desired region of the object by generating a static magnetic field, a gradient magnetic field in the imaging space, and a high-frequency magnetic field in the imaging space, signal detecting means for detecting a magnetic resonance signal from the object, and control unit for controlling the translating means, magnetic field generating means and the signal detecting means, and translating the object continuously or stepwise to a predetermined position at a predetermined speed so as to capture a magnetic resonance image of the object.The magnetic resonance imaging apparatus further comprises translation error detecting means for detecting an error of the position or the set value of the speed, and correcting means for correcting the error detected by the positional error detecting means.
摘要翻译： 磁共振成像装置包括用于将物体放置在成像空间中的物体放置装置，用于通过沿着给定方向连续或逐步平移物体放置装置在给定方向上平移物体的平移装置，用于激发 通过产生静态磁场，成像空间中的梯度磁场和成像空间中的高频磁场来产生物体的期望区域，用于检测来自物体的磁共振信号的信号检测装置，以及控制单元 用于控制平移装置，磁场产生装置和信号检测装置，并以预定速度将物体连续或逐步地转移到预定位置，以便捕获物体的磁共振图像。 磁共振成像装置还包括用于检测位置误差或速度设定值的平移误差检测装置，以及用于校正由位置误差检测装置检测到的误差的校正装置。
-
公开(公告)号：US07847549B2
公开(公告)日：2010-12-07
申请号：US12159177
申请日：2006-12-26
申请人： Tetsuhiko Takahashi , Takayuki Abe , Hisako Nagao
发明人： Tetsuhiko Takahashi , Takayuki Abe , Hisako Nagao
IPC分类号： G01V3/00
CPC分类号： G01R33/56375 , A61B5/0555 , A61B5/7257 , G01R33/56383 , G01R33/5676
摘要： A magnetic resonance imaging apparatus comprises object placing means for placing an object in an imaging space, translating means for translating the object in a given direction by translating the object placing means in the given direction continuously or step-wise, magnetic field generating means for exciting the desired region of the object by generating a static magnetic field, a gradient magnetic field in the imaging space, and a high-frequency magnetic field in the imaging space, signal detecting means for detecting a magnetic resonance signal from the object, and control unit for controlling the translating means, magnetic field generating means and the signal detecting means, and translating the object continuously or stepwise to a predetermined position at a predetermined speed so as to capture a magnetic resonance image of the object.The magnetic resonance imaging apparatus further comprises translation error detecting means for detecting an error of the position or the set value of the speed, and correcting means for correcting the error detected by the positional error detecting means.
摘要翻译： 磁共振成像装置包括用于将物体放置在成像空间中的物体放置装置，用于通过沿着给定方向连续或逐步平移物体放置装置在给定方向上平移物体的平移装置，用于激发 通过产生静态磁场，成像空间中的梯度磁场和成像空间中的高频磁场来产生物体的期望区域，用于检测来自物体的磁共振信号的信号检测装置，以及控制单元 用于控制平移装置，磁场产生装置和信号检测装置，并以预定速度将物体连续或逐步地转移到预定位置，以便捕获物体的磁共振图像。 磁共振成像装置还包括用于检测位置误差或速度设定值的平移误差检测装置，以及用于校正由位置误差检测装置检测到的误差的校正装置。
-
公开(公告)号：US20120141007A1
公开(公告)日：2012-06-07
申请号：US13389620
申请日：2010-08-02
IPC分类号： G06K9/00
CPC分类号： A61B5/055 , A61B5/0402 , A61B5/0816 , A61B5/7207 , A61B5/7285 , G01R33/482 , G01R33/4824 , G01R33/5617 , G01R33/5673
摘要： An image with a desired contrast is obtained while suppressing body motion artifacts caused by both random motion and periodic motion of an object. In order to do so, an imaging sequence using a non-Cartesian sampling method is executed so as to synchronize with a biological signal only at the start time and a repetition time (TR), which is an execution interval between shots within the imaging sequence, is maintained. In addition, a time difference between a delay time and a start time of each shot is calculated, and a shot with a predetermined time difference or more is executed again after the TR time.
摘要翻译： 获得具有期望对比度的图像，同时抑制由对象的随机运动和周期性运动引起的身体运动伪影。 为了这样做，执行使用非笛卡尔采样方法的成像序列，以便仅在开始时与生物信号同步，并且重复时间（TR）是成像序列内的拍摄之间的执行间隔 ，维持。 此外，计算出每个镜头的延迟时间和开始时间之间的时间差，并且在TR时间之后再次执行具有预定时间差的镜头。
-
7.发明申请公开(公告)号：US20110245655A1
公开(公告)日：2011-10-06
申请号：US13139041
申请日：2009-12-22
IPC分类号： A61B5/055
CPC分类号： G01R33/565 , G01R33/4816 , G01R33/4833
摘要： When executing an imaging pulse sequence using a high frequency magnetic field pulse with a partial waveform of a predetermined waveform, an application start time of a slice gradient magnetic field applied simultaneously with the high frequency magnetic field pulse is corrected. Specifically, a magnetic resonance signal for correcting the imaging pulse sequence is acquired by executing a prescan sequence using a high frequency magnetic field pulse with a predetermined waveform, an application start time of a slice selection gradient magnetic field in the imaging pulse sequence is corrected using the magnetic resonance signal for correction, and the imaging pulse sequence is executed by applying the slice selection gradient magnetic field with the corrected application start time.
摘要翻译： 当使用具有预定波形的部分波形的高频磁场脉冲执行成像脉冲序列时，校正与高频磁场脉冲同时施加的切片梯度磁场的施加开始时间。 具体地，通过使用具有预定波形的高频磁场脉冲执行预扫描序列来获取用于校正成像脉冲序列的磁共振信号，使用成像脉冲序列中的切片选择梯度磁场的施加开始时间来校正使用 用于校正的磁共振信号和成像脉冲序列通过应用具有校正的应用开始时间的切片选择梯度磁场来执行。
-
公开(公告)号：US08855392B2
公开(公告)日：2014-10-07
申请号：US13389620
申请日：2010-08-02
IPC分类号： G06K9/00 , A61B5/055 , A61B5/00 , G01R33/567 , A61B5/0402 , A61B5/08 , G01R33/48 , G01R33/561
CPC分类号： A61B5/055 , A61B5/0402 , A61B5/0816 , A61B5/7207 , A61B5/7285 , G01R33/482 , G01R33/4824 , G01R33/5617 , G01R33/5673
摘要： An image with a desired contrast is obtained while suppressing body motion artifacts caused by both random motion and periodic motion of an object. In order to do so, an imaging sequence using a non-Cartesian sampling method is executed so as to synchronize with a biological signal only at the start time and a repetition time (TR), which is an execution interval between shots within the imaging sequence, is maintained. In addition, a time difference between a delay time and a start time of each shot is calculated, and a shot with a predetermined time difference or more is executed again after the TR time.
摘要翻译： 获得具有期望对比度的图像，同时抑制由对象的随机运动和周期性运动引起的身体运动伪影。 为了这样做，执行使用非笛卡尔采样方法的成像序列，以便仅在开始时与生物信号同步，并且重复时间（TR）是成像序列内的拍摄之间的执行间隔 ，维持。 此外，计算出每个镜头的延迟时间和开始时间之间的时间差，并且在TR时间之后再次执行具有预定时间差的镜头。
-
9.发明申请公开(公告)号：US20050070784A1
公开(公告)日：2005-03-31
申请号：US10495726
申请日：2002-11-15
申请人： Kazumi Komura , Tetsuhiko Takahashi , Hisako Nagao
发明人： Kazumi Komura , Tetsuhiko Takahashi , Hisako Nagao
CPC分类号： G01R33/4804 , A61B5/055 , A61B5/11 , G01R33/28
摘要： A magnetic resonance imaging apparatus includes control means 107 and 108 for continuously performing magnetic resonance imaging of a cross section including a portion subjected to measurement of an examinee (101) at a predetermined time interval, operation means 108 for calculating diagnosis information related to the portion subjected to measurement by using a plurality of sets of nuclear magnetic resonance signals related to cross sections imaged at different time points by measuring nuclear magnetic resonance signals generated from the examinee 101, and a position detection device 118 having a detection camera 118b for detecting in non-contact manner the position (three-dimensional position and rotation angle around an orthogonal coordinate axis) of a pointer 118a provided outside the examines body and moving while interlocked with the biological movement of the examinee 101. The control means 108 sets the position of the cross section according to the position of the pointer 118a detected by the position detection device 118, thereby eliminating an affect of the biological movement and improving the accuracy and the reliability of the diagnosis information including differential processing of a portion subjected to measurement.
摘要翻译： 磁共振成像装置包括控制装置107和108，用于以预定的时间间隔连续地执行包括受检者（101）测量的部分的横截面的磁共振成像;操作装置108，用于计算与该部分相关的诊断信息 通过使用通过测量从受检者101产生的核磁共振信号，通过使用与在不同时间点成像的横截面相关的多组核磁共振信号来进行测量;以及位置检测装置118，具有检测相机118b， - 接触设置在检查体外部的指示器118a的位置（三维位置和正交坐标轴周围的旋转角度），并且与受检者101的生物运动互锁的同时移动。控制装置108将位置 根据指示器118a的位置的横截面 通过位置检测装置118进行检测，从而消除生物运动的影响，提高诊断信息的精度和可靠性，包括测量部分的差分处理。
-
10.发明授权公开(公告)号：US08594767B2
公开(公告)日：2013-11-26
申请号：US12523343
申请日：2008-02-01
IPC分类号： A61B5/05
CPC分类号： A61B5/055 , A61B5/7285 , G01R33/5616 , G01R33/56375 , G01R33/56383 , G01R33/5673
摘要： When multiple types of imaging are performed while moving a table on which a subject to be examined is placed, an imaging efficiency is improved and a high-quality image is obtained within a short time. Therefore, within a predetermined time interval such as an identical period of a periodic living body motion, a predetermined number of echo signals from each of the multiple types of imaging sequences are acquired and the table on which the subject to be examined is placed is moved. Along with the movement of the table, data items within the same range in the Ky-direction as to each of the imaging sequences are acquired, the moving speed of the table is controlled in such a manner that the acquired data items become continuous in the x-direction, and images are reconstructed based on the data items obtained respectively from the imaging sequences.
摘要翻译： 当在移动要被检查对象的表格的同时执行多种类型的成像时，提高成像效率并且在短时间内获得高质量图像。 因此，在诸如周期性生物体运动的相同周期的预定时间间隔内，获取来自多种类型的成像序列中的每一种的预定数量的回波信号，并且移动放置被检查对象的表 。 随着桌子的移动，获取与每个成像序列相同的Ky方向上的数据项，表格的移动速度被控制成使获取的数据项在 x方向，并且基于从成像序列分别获得的数据项重建图像。
-
-
-
-
-
-
-
-
-
搜索结果
118 条记录 (耗时 0.028 秒)
