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1. 发明授权

US09198598B2 Magnetic resonance imaging apparatus and SAR adjustment method 有权
标题翻译：磁共振成像装置和SAR调整方法
公开(公告)号：US09198598B2
公开(公告)日：2015-12-01
申请号：US13638475
申请日：2011-03-24
申请人： Miyuki Kawamura , Kosuke Ito , Hisako Nagao
发明人： Miyuki Kawamura , Kosuke Ito , Hisako Nagao
IPC分类号： A61B5/055 , G01R33/28 , G01R33/36 , G01R33/54
CPC分类号： A61B5/055 , G01R33/288 , G01R33/36 , G01R33/543 , G01R33/546
摘要： Desired imaging is performed within the SAR restriction without changing the imaging conditions set in advance when SAR exceeds an upper limit. In order to do so, in imaging of an object performed by combination of a plurality of pulse sequences, a SAR graph showing a temporal change in the predicted SAR value of each pulse sequence is displayed. When the predicted SAR value of the pulse sequence is the same as or exceeds the upper SAR limit, the exchange of such pulse sequences or the insertion of a waiting time is performed.
摘要翻译：期望的成像在SAR限制内执行，而不改变当SAR超过上限时预先设置的成像条件。为了这样做，在通过多个脉冲序列的组合执行的对象的成像中，显示示出每个脉冲序列的预测SAR值的时间变化的SAR图。当脉冲序列的预测SAR值相同或超过上限SAR限制时，执行这种脉冲序列的交换或插入等待时间。

2. 发明申请

US20130023753A1 MAGNETIC RESONANCE IMAGING APPARATUS AND SAR ADJUSTMENT METHOD 有权
标题翻译：磁共振成像装置和SAR调整方法
公开(公告)号：US20130023753A1
公开(公告)日：2013-01-24
申请号：US13638475
申请日：2011-03-24
申请人： Miyuki Kawamura , Kosuke Ito , Hisako Nagao
发明人： Miyuki Kawamura , Kosuke Ito , Hisako Nagao
IPC分类号： A61B5/055
CPC分类号： A61B5/055 , G01R33/288 , G01R33/36 , G01R33/543 , G01R33/546
摘要： Desired imaging is performed within the SAR restriction without changing the imaging conditions set in advance when SAR exceeds an upper limit. In order to do so, in imaging of an object performed by combination of a plurality of pulse sequences, a SAR graph showing a temporal change in the predicted SAR value of each pulse sequence is displayed. When the predicted SAR value of the pulse sequence is the same as or exceeds the upper SAR limit, the exchange of such pulse sequences or the insertion of a waiting time is performed.
摘要翻译：期望的成像在SAR限制内执行，而不改变当SAR超过上限时预先设置的成像条件。为了这样做，在通过多个脉冲序列的组合执行的对象的成像中，显示示出每个脉冲序列的预测SAR值的时间变化的SAR图。当脉冲序列的预测SAR值相同或超过上限SAR限制时，执行这种脉冲序列的交换或插入等待时间。

3. 发明申请

US20050033164A1 Endoscopic image pickup method and magnetic resonance imaging device using the same 失效
标题翻译：内窥镜摄像方法及使用其的磁共振成像装置
公开(公告)号：US20050033164A1
公开(公告)日：2005-02-10
申请号：US10483444
申请日：2002-07-12
申请人： Takeshi Yatsuo , Hisako Nagao , Kenji Sakakibara
发明人： Takeshi Yatsuo , Hisako Nagao , Kenji Sakakibara
IPC分类号： G01R33/34 , A61B5/055 , A61B19/00 , G01R33/32 , G01R33/36 , G06T1/00 , G06T5/00 , G06T7/00 , A61B6/00
CPC分类号： A61B34/20 , A61B5/06 , A61B90/361 , A61B2090/365 , A61B2090/374 , A61B2090/3954 , A61B2090/3958 , G01R33/286 , G06T5/006 , G06T7/73 , G06T2207/30004
摘要： An endoscope-like image taking method of the present invention includes a preparation step of providing at least one peculiar index, which can be discriminated from other portions on an MR image, at the tip of a catheter, a first step (S1) of previously inserting a metal guide wire for guiding the catheter into a body cavity of a patient into which the catheter is inserted, a second step (S2) of inserting the catheter into the body cavity along the guide wire, a third step (S3) of executing an MR imaging sequence of a plurality of sliced images intersecting the guide wire, a fourth step (S4) of reconstructing three-dimensional image data based upon the nuclear magnetic resonance signals, which are generated from the patient when the sequence is executed and are received by the guide wire, and determining the tip position and the inserting direction of the catheter by detecting the peculiar index provided at the tip of the catheter based upon the three-dimensional image data, and a fifth step (S5) of reconstructing the center projected image using the three-dimensional image data and setting the tip position and the inserting direction of the catheter as a view point and a line-of-sight direction and displaying the center projected image on a display means, thereby an endoscope-like image, which is observed from the catheter in the body cavity of the patient, is taken and displayed in real time or semi-real time so that the insertion of the catheter is supported.
摘要翻译：本发明的内窥镜检查方法包括制备步骤，在导管的尖端处提供至少一种可以与MR图像上的其它部分区分开的特有指标，前者的第一步骤（S1）插入用于将导管引导到其中插入导管的患者的体腔中的金属导丝;沿着导丝将导管插入体腔的第二步骤（S2）;执行第三步骤与引导线相交的多个切片图像的MR成像序列;第四步骤（S4），用于根据核磁共振信号重构基于核心磁共振信号的三维图像数据，所述核磁共振信号在执行和接收时由患者生成并且通过基于三维图像数据检测设置在导管的尖端处的特有指标来确定导管的尖端位置和插入方向，并且通过引导线 h步骤（S5），使用三维图像数据重建中心投影图像，并将导管的尖端位置和插入方向设置为视点和视线方向，并将中心投影图像显示在从而从患者的体腔内的导管观察到的内窥镜状图像被实时或半实时地取出并显示，从而支撑导管的插入。

4. 发明申请

US20080024127A1 Magnetic Resonance Imaging Apparatus and Method 有权
标题翻译：磁共振成像装置及方法
公开(公告)号：US20080024127A1
公开(公告)日：2008-01-31
申请号：US11662108
申请日：2005-09-02
申请人： Hisako Nagao , Takayuki Abe , Tetsuhiko Takahashi , Masahiro TAkizawa
发明人： Hisako Nagao , Takayuki Abe , Tetsuhiko Takahashi , Masahiro TAkizawa
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。

5. 发明申请

US20050070784A1 Magnetic resonance imaging apparatus and magnetic resonance imaging method 审中-公开
标题翻译：磁共振成像装置和磁共振成像方法
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
IPC分类号： A61B5/055 , A61B5/11 , G01R33/28 , G01R33/48 , A61B5/05
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。

6. 发明申请

US20120093384A1 MAGNETIC RESONANCE IMAGING APPARATUS AND IMAGING SLICE DETERMINATION METHOD 有权
标题翻译：磁共振成像装置和成像尺寸测定方法
公开(公告)号：US20120093384A1
公开(公告)日：2012-04-19
申请号：US13377899
申请日：2010-06-21
申请人： Tomohiro Goto , Hisako Nagao , Hiroyuki Itagaki
发明人： Tomohiro Goto , Hisako Nagao , Hiroyuki Itagaki
IPC分类号： G06K9/00
CPC分类号： G01R33/543 , A61B5/055 , A61B5/4528 , A61B5/7207 , G01R33/546 , G01R33/56509
摘要： In order to provide a technique for accurately realizing an examination, which is for acquiring a plurality of images of the same examination section, without a complicated operation and an extension of an examination time, body movement information of a subject is acquired immediately before each imaging in an examination, and it is determined whether or not there is a change in the position of the subject by comparing it with body movement information immediately before reference imaging. Only when there is a change in the position of the subject, an imaging slice setting image is acquired again. Then, a recommended imaging slice is calculated using the newest imaging slice setting image.
摘要翻译：为了提供用于准确地实现用于获取相同检查部分的多个图像的检查的技术，而不需要复杂的操作和延长检查时间，在每个成像之前立即获取被检体的身体运动信息并且通过将其与参考成像之前的身体运动信息进行比较来确定对象的位置是否发生变化。只有当被摄体的位置发生改变时，再次获得成像切片设置图像。然后，使用最新的成像切片设置图像计算推荐的成像切片。

7. 发明申请

US20100213937A1 Magnetic Resonance Imaging Apparatus and Method 有权
标题翻译：磁共振成像装置及方法
公开(公告)号：US20100213937A1
公开(公告)日：2010-08-26
申请号：US11917129
申请日：2006-06-14
申请人： Hisako Nagao , Takayuki Abe
发明人： Hisako Nagao , Takayuki Abe
IPC分类号： G01R33/48
CPC分类号： A61B5/055
摘要： An magnetic resonance imaging apparatus includes: imaging means for dividing an object to be examined into a plurality of regions in a predetermined direction, setting images of slice positions for each of the regions so that the slice positions are continuous in each region, and imaging each of the regions while moving the object stepwise; and display means for acquiring a plurality of image data having three types of categories: the region, the slice position and the imaging sequence, and displaying the image data.The magnetic resonance imaging apparatus selectively sets one of the three types of categories and rearranges and displays a plurality of images having the set category in the lengthwise direction or the lateral direction according to the two other categories that have not been selectively set.
摘要翻译：磁共振成像装置包括：成像装置，用于将被检查对象沿预定方向划分成多个区域，设置每个区域的切片位置的图像，使得每个区域中的切片位置是连续的，并且对每个区域进行成像的区域，同时逐步移动物体; 以及显示装置，用于获取具有三种类型的多个图像数据：区域，切片位置和成像序列，以及显示图像数据。磁共振成像装置根据未被选择性地设定的其他两个类别，选择性地设定三种类型和重新排列中的一种，并且在长度方向或横向上显示具有设定类别的多个图像。

8. 发明授权

US07847549B2 Magnetic resonance imaging apparatus 失效
标题翻译：磁共振成像装置
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。

9. 发明授权

US07768263B2 Magnetic resonance imaging apparatus and method 有权
标题翻译：磁共振成像装置及方法
公开(公告)号：US07768263B2
公开(公告)日：2010-08-03
申请号：US12331005
申请日：2008-12-09
申请人： Hisako Nagao , Takayuki Abe , Tetsuhiko Takahashi , Masahiro Takizawa
发明人： Hisako Nagao , Takayuki Abe , Tetsuhiko Takahashi , Masahiro Takizawa
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。

10. 发明授权

US07653426B2 Endoscopic image pickup method and magnetic resonance imaging device using the same 失效
标题翻译：内窥镜摄像方法及使用其的磁共振成像装置
公开(公告)号：US07653426B2
公开(公告)日：2010-01-26
申请号：US10483444
申请日：2002-07-12
申请人： Takeshi Yatsuo , Hisako Nagao , Kenji Sakakibara
发明人： Takeshi Yatsuo , Hisako Nagao , Kenji Sakakibara
IPC分类号： A61B5/05
CPC分类号： A61B34/20 , A61B5/06 , A61B90/361 , A61B2090/365 , A61B2090/374 , A61B2090/3954 , A61B2090/3958 , G01R33/286 , G06T5/006 , G06T7/73 , G06T2207/30004
摘要： An endoscope-like image taking method includes providing at least one peculiar index, which can be discriminated from other portions on an MR image, at the tip of a catheter, previously inserting a metal guide wire for guiding the catheter into a body cavity of a patient inserting the catheter into the body cavity along the guide wire, executing an MR imaging sequence of a plurality of sliced images intersecting the guide wire, reconstructing three-dimensional image data based upon the nuclear magnetic resonance signals, which are received by the guide wire, and determining the tip position and the inserting direction of the catheter by detecting the peculiar index provided at the tip of the catheter based upon the three-dimensional image data, and reconstructing the center projected image using the three-dimensional image data and setting the tip position and the inserting direction of the catheter as a view point and a line-of-sight direction and displaying the center projected image on a display means.
摘要翻译：一种内窥镜检查方法包括：在导管的尖端处提供至少一个可与MR图像上的其它部分区别的独特指标，预先插入用于将导管引导到体腔内的金属导丝患者沿导丝将导管插入体腔，执行与引导线相交的多个切片图像的MR成像序列，根据由导丝接收的核磁共振信号重构三维图像数据并且通过基于三维图像数据检测设置在导管的尖端处的特有指标来确定导管的尖端位置和插入方向，并且使用三维图像数据重建中心投影图像并将尖端位置和导管的插入方向作为视点和视线方向，并显示中心投影图像在显示装置上。

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