公开(公告)号：US20100171497A1

公开(公告)日：2010-07-08

申请号：US12650266

申请日：2009-12-30

申请人： Yuji IWADATE ,  Kenichi KANDA

发明人： Yuji IWADATE ,  Kenichi KANDA

IPC分类号： G01R33/48

CPC分类号： G01R33/5676 ,  G01R33/3415 ,  G01R33/543

摘要： A magnetic resonance imaging apparatus includes a scan execution unit configured to execute a regular scan in which a navigator sequence for generating a magnetic resonance signal in a navigator area containing a region of interest moving with a biological movement of a subject and an imaging sequence for generating a magnetic resonance signal in an imaging area of the subject are carried out, and a signal processing unit configured to detect a position of a region of interest based on a magnetic resonance signal generated by a navigator sequence in the regular scan and to generate an image based on the detected position and the magnetic resonance signal generated by the imaging sequence. The signal processing unit is configured to generate an intensity profile with respect to the magnetic resonance signal generated by a navigator sequence in the pre-scan and received at each of the coil elements, determine the gradient polarity of the profile line corresponding to the high-signal substance in the predetermined direction in the generated intensity profile, and to select a coil element that received a magnetic resonance signal of the intensity profile highest in maximum signal intensity among the intensity profiles the gradient polarity of which was determined to face upward. The position of the region of interest is detected based on a magnetic resonance signal generated by a navigator sequence in the regular scan and received at the selected coil element.

摘要翻译： 磁共振成像装置包括：扫描执行单元，被配置为执行常规扫描，其中，在包含感兴趣区域的导航区域中产生磁共振信号的导航序列，所述导航区域包含随着被摄体的生物运动移动的感兴趣区域，以及用于生成 执行被检体的成像区域的磁共振信号，以及信号处理部，其基于由常规扫描中的导航序列生成的磁共振信号来检测感兴趣区域的位置，并生成图像 基于由成像序列产生的检测位置和磁共振信号。 信号处理单元被配置为产生相对于由预扫描中的每个线圈元件接收的导航序列产生的磁共振信号的强度分布，确定对应于高频信号的轮廓线的梯度极性， 在所产生的强度分布中沿预定方向的信号物质，并且选择线性元件，其接收在梯度极性被确定为面向上的强度分布中最大信号强度最高的强度分布的磁共振信号。 感兴趣区域的位置是基于由常规扫描中的导航序列产生的并在所选择的线圈元件处接收的磁共振信号来检测的。

公开(公告)号：US20060267587A1

公开(公告)日：2006-11-30

申请号：US11438524

申请日：2006-05-22

申请人： Yuji Iwadate ,  Tetsuji Tsukamoto

发明人： Yuji Iwadate ,  Tetsuji Tsukamoto

IPC分类号： G01V3/00

CPC分类号： G01R33/341

摘要： With a view to providing a receiving coil which permits a subject to assume a supine position when radiographing the breast of the subject, thereby improving the working efficiency, a receiving coil for receiving a magnetic resonance signal from the breast of a subject lying within a static magnetic field space is provided in each of a first cup and a second cup of a brassiere which cups receive the breast of the subject SU therein.

摘要翻译： 为了提供一种接收线圈，其允许受试者在拍摄对象的乳房时进行仰卧位置，从而提高工作效率;接收线圈，用于从位于静态内的被摄体的乳房接收磁共振信号 在第一杯和第二杯胸罩中的每一个中提供磁场空间，其中杯子容纳受试者SU的乳房。

公开(公告)号：US07834623B2

公开(公告)日：2010-11-16

申请号：US12015833

申请日：2008-01-17

申请人： Yuji Iwadate ,  Kenichi Kanda

发明人： Yuji Iwadate ,  Kenichi Kanda

IPC分类号： G01V3/00

CPC分类号： G01R33/5676

摘要： An MRI apparatus includes a navigator device for obtaining information of body motion produced by respiration of a subject by a navigator pulse sequence, and a respiration waveform display device for displaying a respiration waveform on the basis of the body motion information obtained by the navigator device.

摘要翻译： MRI装置包括导航装置，用于通过导航脉冲序列获得由对象的呼吸产生的身体运动的信息;以及呼吸波形显示装置，用于根据导航装置获得的身体运动信息显示呼吸波形。

公开(公告)号：US20090270720A1

公开(公告)日：2009-10-29

申请号：US12429033

申请日：2009-04-23

申请人： Yuji Iwadate ,  Kenichi Kanda ,  Aki Yamazaki

发明人： Yuji Iwadate ,  Kenichi Kanda ,  Aki Yamazaki

IPC分类号： A61B5/055 ,  G01R33/48

CPC分类号： G01R33/5676 ,  A61B5/055 ,  G01R33/543 ,  G01R33/546

摘要： A magnetic resonance imaging apparatus includes a scan section for executing a navigator sequence which transmits an RF pulse to a subject to obtain each magnetic resonance signal as navigator data. Upon execution of the navigator sequence, the scan section excites both a navigator area having two regions from which intensities of different navigator data signals are obtained, said two regions containing a body-moved region of the subject, and a region different from the two regions simultaneously, and transmits the RF pulse in such a manner that the phase of navigator data obtained from the different region differs from the phase of at least one region of navigator data obtained from the two regions.

摘要翻译： 磁共振成像装置包括扫描部分，用于执行导航序列，其将RF脉冲发送到对象以获得每个磁共振信号作为导航器数据。 在执行导航器序列时，扫描部分激发具有两个区域的导航区域，从该区域获得不同导航数据信号的强度，所述两个区域包含被摄体的身体移动区域，以及与两个区域不同的区域 同时发送RF脉冲，使得从不同区域获得的导航数据的相位与从两个区域获得的导航数据的至少一个区域的相位不同。

公开(公告)号：US20080231279A1

公开(公告)日：2008-09-25

申请号：US12051936

申请日：2008-03-20

申请人： Yuji Iwadate

发明人： Yuji Iwadate

IPC分类号： G01R33/32

CPC分类号： G01R33/3415 ,  G01R33/34007 ,  G01R33/3642 ,  G01R33/365

摘要： An RF coil includes: a first loop coil element including a first plane closed by a first coil line; and a second loop coil element including a second plane closed by a second coil line, in which part of said first plane and part of said second plane face each other, wherein: said first loop coil element and said second loop coil element so move while maintaining the facing state as to vary the square measure of the facing area in which said first coil plane and said second coil plane face each other; said first loop coil element includes: a first spreading part having a first coil line so disposed that the distance of opposing by said first coil line parallel to a first moving direction, widens in said first moving direction, in a direction normal to said first moving direction in which the movement so takes place that the square measure of said facing area increases relative to said second loop coil element in a direction parallel to said first plane; and a first coil crossing part in which a first coil line is so disposed as to cross a second spreading part, in an arrangement in which said first loop coil element and said second loop coil element are electromagnetically decoupled and the square measure of said facing area is at the minimum thereof; said second loop coil element includes: a second spreading part having a second coil line so disposed that the distance of opposing by said second coil line parallel to a second moving direction, widens in said second moving direction, in a direction normal to said second moving direction in which the movement so takes place that the square measure of said facing area increases relative to said first loop coil element in a direction parallel to said second plane.

摘要翻译： RF线圈包括：第一环线圈元件，包括由第一线圈线封闭的第一平面; 以及第二环形线圈元件，其包括由第二线圈线封闭的第二平面，所述第二平面的一部分和所述第二平面的一部分彼此面对，其中：所述第一环形线圈元件和所述第二环形线圈元件移动同时 保持面对状态以改变所述第一线圈平面和所述第二线圈平面面对的面对区域的平方度量; 所述第一环形线圈元件包括：第一扩展部分，其具有第一线圈线，所述第一线圈线被布置成使得所述第一线圈线相对于第一移动方向平行的距离在所述第一移动方向上沿与所述第一移动方向正交的方向 发生运动的方向是所述面对区域的平方尺寸相对于所述第二环形线圈元件在平行于所述第一平面的方向上增加; 以及第一线圈交叉部分，其中第一线圈线被布置成与第二扩展部分交叉，其中所述第一环形线圈元件和所述第二环形线圈元件被电磁解耦并且所述面对区域的平方度量 至少是; 所述第二环形线圈元件包括：第二扩展部分，具有第二线圈线，所述第二线圈线设置成使得所述第二线圈线相对的距离平行于第二移动方向在所述第二移动方向上沿与所述第二移动方向正交的方向 发生移动的方向是所述面对区域的平方尺寸相对于所述第一环形线圈元件在平行于所述第二平面的方向上增加。

公开(公告)号：US20090066329A1

公开(公告)日：2009-03-12

申请号：US12200818

申请日：2008-08-28

申请人： Kenichi Kanda ,  Yuji Iwadate

发明人： Kenichi Kanda ,  Yuji Iwadate

IPC分类号： G01R33/54

CPC分类号： G01R33/5676 ,  G01R33/56509

摘要： A magnetic resonance imaging apparatus executes scans for executing a navigator sequence for acquiring as navigator data a magnetic resonance signal from a navigator area containing tissues body-moved in a subject and executing an imaging sequence for acquiring a magnetic resonance signal from an imaging area as imaging data at the subject, thereby to generate an image with respect to the imaging area. The magnetic resonance imaging apparatus includes, a phase profile generating part which generates a phase profile so as to show a relationship between a phase of the navigator data and a position of the navigator area, a phase correcting part which corrects folding back of the phase profile generated by the phase profile generating part, and a position detecting part which detects a position of a tissue body-moved in the navigator area, based on the phase profile corrected by the phase correcting part.

摘要翻译： 磁共振成像设备执行用于执行导航序列的扫描，以从导航器数据获取来自导航区域的磁共振信号，所述磁共振信号来自包含在被摄体中移动的身体的组织，并且执行用于从成像区域获取磁共振信号的成像序列作为成像 数据，从而产生相对于成像区域的图像。 磁共振成像装置包括：相位轮廓生成部，其生成相位轮廓，以示出导航者数据的相位与导航区域的位置之间的关系;相位校正部，其校正相位轮廓的折回 以及位置检测部，其基于由所述相位校正部校正的相位轮廓，检测在所述导航区域中移动的组织体的位置。

公开(公告)号：US20070073141A1

公开(公告)日：2007-03-29

申请号：US11531973

申请日：2006-09-14

申请人： Yuji Iwadate ,  Atsushi Nozaki ,  Tetsuji Tsukamoto ,  Hiroyuki Kabasawa

发明人： Yuji Iwadate ,  Atsushi Nozaki ,  Tetsuji Tsukamoto ,  Hiroyuki Kabasawa

IPC分类号： A61B5/05

CPC分类号： G01R33/5676 ,  G01R33/56509

摘要： When two or more run of breath holding imaging with breathing interval therebetween is conducted, the present invention allows the slice position to follow the positional displacement of organ in each run. The present invention comprises an image capturing step for the navigator for imaging an MR image having the imaging area including the diaphragm during breath holding, a diaphragm position obtaining step for obtaining the diaphragm position by analyzing the navigator image, an image capturing step for the actual imaging for capturing an MR image of a desired slice during breath holding, and a breathing interval step for releasing respiration, in which these steps are iteratively repeated for twice or more. The slice position of second session or later is made to be a position which is set such that the slice position of first run is compensated for by the difference between the diaphragm position of the first run and the diaphragm position of the second run or later.

摘要翻译： 当进行呼吸间隔的两次或更多次呼吸持续成像时，本发明允许切片位置跟随每次跑步中器官的位置位移。 本发明包括用于导航仪的图像捕获步骤，用于对具有包括在呼吸保持期间的隔膜的成像区域的MR图像进行成像，用于通过分析导航图像来获得隔膜位置的隔膜位置获取步骤，用于实际 用于在呼吸保持期间捕获期望切片的MR图像的成像和用于释放呼吸的呼吸间隔步骤，其中这些步骤被迭代地重复两次或更多次。 第二会话或更后的切片位置被设置为使得第一行程的切片位置由第一行程的隔膜位置和第二行程的隔膜位置之间的差被补偿的位置。

公开(公告)号：US09316713B2

公开(公告)日：2016-04-19

申请号：US12429033

申请日：2009-04-23

申请人： Yuji Iwadate ,  Kenichi Kanda ,  Aki Yamazaki

发明人： Yuji Iwadate ,  Kenichi Kanda ,  Aki Yamazaki

IPC分类号： A61B5/055 ,  G01R33/48 ,  G01R33/567 ,  G01R33/54

CPC分类号： G01R33/5676 ,  A61B5/055 ,  G01R33/543 ,  G01R33/546

摘要： A magnetic resonance imaging apparatus includes a scan section for executing a navigator sequence which transmits an RF pulse to a subject to obtain each magnetic resonance signal as navigator data. Upon execution of the navigator sequence, the scan section excites both a navigator area having two regions from which intensities of different navigator data signals are obtained, the two regions containing a body-moved region of the subject, and a region different from the two regions simultaneously, and transmits the RF pulse in such a manner that the phase of navigator data obtained from the different region differs from the phase of at least one region of navigator data obtained from the two regions.

摘要翻译： 磁共振成像装置包括扫描部分，用于执行导航序列，其将RF脉冲发送到对象以获得每个磁共振信号作为导航器数据。 在执行导航器序列时，扫描部分激励具有两个区域的导航区域，从该区域获得不同导航数据信号的强度，两个区域包含被摄体的身体移动区域，以及与两个区域不同的区域 同时发送RF脉冲，使得从不同区域获得的导航数据的相位与从两个区域获得的导航数据的至少一个区域的相位不同。

公开(公告)号：US08564290B2

公开(公告)日：2013-10-22

申请号：US12893928

申请日：2010-09-29

申请人： Yoshihiro Tomoda ,  Yuji Iwadate

发明人： Yoshihiro Tomoda ,  Yuji Iwadate

IPC分类号： G01V3/00

CPC分类号： G01R33/5676

摘要： A magnetic resonance imaging apparatus for acquiring k-space data from a deformable imaging region of a subject and generating image data of the imaging region at the time of being deformed to a predetermined state, based on the acquired k-space data, includes a gradient coil for applying a gradient magnetic field in a phase encoding direction, and an image data calculation device for calculating a numeric value for defining a relationship between the imaging region at the time of being deformed to the predetermined state and the imaging region at an nth phase encoding and calculating image data of the imaging region at the time of being deformed to the predetermined state, based on the calculated numeric value and the k-space data acquired from the imaging region.

摘要翻译： 一种磁共振成像设备，用于从被摄体的可变形成像区域获取k空间数据，并且基于所获取的k空间数据，在变形到预定状态时生成成像区域的图像数据，包括梯度 线圈，用于在相位编码方向上施加梯度磁场;以及图像数据计算装置，用于计算用于定义变形时的成像区域与预定状态之间的关系的数值和第n阶段的成像区域 基于计算出的数值和从成像区域获取的k空间数据，将变形时的成像区域的图像数据编码和计算到预定状态。

公开(公告)号：US07782053B2

公开(公告)日：2010-08-24

申请号：US12200818

申请日：2008-08-28

申请人： Kenichi Kanda ,  Yuji Iwadate

发明人： Kenichi Kanda ,  Yuji Iwadate

IPC分类号： G01V3/00

CPC分类号： G01R33/5676 ,  G01R33/56509

摘要： A magnetic resonance imaging apparatus executes scans for executing a navigator sequence for acquiring as navigator data a magnetic resonance signal from a navigator area containing tissues body-moved in a subject and executing an imaging sequence for acquiring a magnetic resonance signal from an imaging area as imaging data at the subject, thereby to generate an image with respect to the imaging area. The magnetic resonance imaging apparatus includes, a phase profile generating part which generates a phase profile so as to show a relationship between a phase of the navigator data and a position of the navigator area, a phase correcting part which corrects folding back of the phase profile generated by the phase profile generating part, and a position detecting part which detects a position of a tissue body-moved in the navigator area, based on the phase profile corrected by the phase correcting part.

摘要翻译： 磁共振成像设备执行用于执行导航序列的扫描，以从导航器数据获取来自导航区域的磁共振信号，所述磁共振信号来自包含在被摄体中移动的身体的组织，并且执行用于从成像区域获取磁共振信号的成像序列作为成像 数据，从而产生相对于成像区域的图像。 磁共振成像装置包括：相位轮廓生成部，其生成相位轮廓，以示出导航者数据的相位与导航区域的位置之间的关系;相位校正部，其校正相位轮廓的折回 以及位置检测部，其基于由所述相位校正部校正的相位轮廓，检测在所述导航区域中移动的组织体的位置。