公开(公告)号：US07684848B2

公开(公告)日：2010-03-23

申请号：US11231878

申请日：2005-09-22

申请人： Shigehide Kuhara ,  Masao Yui ,  Yoshimori Kassai

发明人： Shigehide Kuhara ,  Masao Yui ,  Yoshimori Kassai

IPC分类号： A61B5/05

CPC分类号： G01R33/5673

摘要： Data acquisition based on the same MRI encoding pattern is repeated at least once for each R wave occurring at time T0 used as a trigger. The necessary number of data for image reconstruction are extracted as subsets of a complete MRI data set from the resulting plural sets of acquired MRI by temporally retrospecting from the next R wave occurrence time (time T1) after the R wave (time T0) used as the trigger. The extracted data subsets are then rearranged to generate a complete composite MRI data set which is then used for image reconstruction of heart movement associated with end-diastole after the occurrence of the triggering R wave.

摘要翻译： 对于在用作触发的时间T0发生的每个R波，基于相同MRI编码模式的数据采集被重复至少一次。 在用作R波（时间T0）之后的下一个R波发生时间（时间T1），从所得到的多组获取的MRI中提取必要数量的用于图像重建的数据作为完整MRI数据集的子集， 触发器。 提取的数据子集然后被重新排列以产生完整的复合MRI数据集，然后将其用于在触发R波发生之后与舒张末期相关的心脏运动的图像重建。

公开(公告)号：US20070205769A1

公开(公告)日：2007-09-06

申请号：US11699325

申请日：2007-01-30

申请人： Masao Yui ,  Yoshimori Kassai ,  Shigehide Kuhara

发明人： Masao Yui ,  Yoshimori Kassai ,  Shigehide Kuhara

IPC分类号： G01V3/00

CPC分类号： G01R33/56509 ,  G01R33/546 ,  G01R33/5614 ,  G01R33/5635 ,  G01R33/56518 ,  G01R33/5676

摘要： An MRI apparatus includes an imaging signal acquisition unit, a motion signal acquisition unit, a motion amount determination unit, a motion correction unit and an image reconstruction unit. The imaging signal acquisition unit acquires MR signals as imaging signals. The motion signal acquisition unit repetitively acquires MR signals having PE amount less than that of the imaging signals as motion signals. The motion amount determination unit obtains a motion amount using the motion signals. The motion correction unit performs correction processing of the imaging signals in accordance with the motion amount. The image reconstruction unit reconstructs an image using the imaging signals after the correction processing.

摘要翻译： MRI装置包括成像信号获取单元，运动信号获取单元，运动量确定单元，运动校正单元和图像重建单元。 成像信号获取单元获取MR信号作为成像信号。 运动信号获取单元重复获取具有小于成像信号的PE量的MR信号作为运动信号。 运动量确定单元使用运动信号获得运动量。 运动校正单元根据运动量进行摄像信号的校正处理。 图像重建单元使用校正处理之后的成像信号来重建图像。

公开(公告)号：US07825660B2

公开(公告)日：2010-11-02

申请号：US12076166

申请日：2008-03-14

申请人： Masao Yui ,  Yoshimori Kassai ,  Shigehide Kuhara

发明人： Masao Yui ,  Yoshimori Kassai ,  Shigehide Kuhara

IPC分类号： G01V3/00

CPC分类号： G01R33/56509 ,  G01R33/546 ,  G01R33/5614 ,  G01R33/5635 ,  G01R33/56518 ,  G01R33/5676

摘要： An MRI apparatus includes an imaging signal acquisition unit, a motion signal acquisition unit, a motion amount determination unit, a motion correction unit and an image reconstruction unit. The imaging signal acquisition unit acquires MR signals as imaging signals. The motion signal acquisition unit repetitively acquires MR signals having PE amount less than that of the imaging signals as motion signals. The motion amount determination unit obtains a motion amount using the motion signals. The motion correction unit performs correction processing of the imaging signals in accordance with the motion amount. The image reconstruction unit reconstructs an image using the imaging signals after the correction processing.

摘要翻译： MRI装置包括成像信号获取单元，运动信号获取单元，运动量确定单元，运动校正单元和图像重建单元。 成像信号获取单元获取MR信号作为成像信号。 运动信号获取单元重复获取具有小于成像信号的PE量的MR信号作为运动信号。 运动量确定单元使用运动信号获得运动量。 运动校正单元根据运动量进行摄像信号的校正处理。 图像重建单元使用校正处理之后的成像信号来重建图像。

公开(公告)号：US20080231271A1

公开(公告)日：2008-09-25

申请号：US12076166

申请日：2008-03-14

申请人： Masao Yui ,  Yoshimori Kassai ,  Shigehide Kuhara

发明人： Masao Yui ,  Yoshimori Kassai ,  Shigehide Kuhara

IPC分类号： G01R33/54

CPC分类号： G01R33/56509 ,  G01R33/546 ,  G01R33/5614 ,  G01R33/5635 ,  G01R33/56518 ,  G01R33/5676

摘要： An MRI apparatus includes an imaging signal acquisition unit, a motion signal acquisition unit, a motion amount determination unit, a motion correction unit and an image reconstruction unit. The imaging signal acquisition unit acquires MR signals as imaging signals. The motion signal acquisition unit repetitively acquires MR signals having PE amount less than that of the imaging signals as motion signals. The motion amount determination unit obtains a motion amount using the motion signals. The motion correction unit performs correction processing of the imaging signals in accordance with the motion amount. The image reconstruction unit reconstructs an image using the imaging signals after the correction processing.

公开(公告)号：US07365543B2

公开(公告)日：2008-04-29

申请号：US11699325

申请日：2007-01-30

申请人： Masao Yui ,  Yoshimori Kassai ,  Shigehide Kuhara

发明人： Masao Yui ,  Yoshimori Kassai ,  Shigehide Kuhara

IPC分类号： G01V3/00

CPC分类号： G01R33/56509 ,  G01R33/546 ,  G01R33/5614 ,  G01R33/5635 ,  G01R33/56518 ,  G01R33/5676

摘要： An MRI apparatus includes an imaging signal acquisition unit, a motion signal acquisition unit, a motion amount determination unit, a motion correction unit and an image reconstruction unit. The imaging signal acquisition unit acquires MR signals as imaging signals. The motion signal acquisition unit repetitively acquires MR signals having PE amount less than that of the imaging signals as motion signals. The motion amount determination unit obtains a motion amount using the motion signals. The motion correction unit performs correction processing of the imaging signals in accordance with the motion amount. The image reconstruction unit reconstructs an image using the imaging signals after the correction processing.

摘要翻译： MRI装置包括成像信号获取单元，运动信号获取单元，运动量确定单元，运动校正单元和图像重建单元。 成像信号获取单元获取MR信号作为成像信号。 运动信号获取单元重复获取具有小于成像信号的PE量的MR信号作为运动信号。 运动量确定单元使用运动信号获得运动量。 运动校正单元根据运动量进行摄像信号的校正处理。 图像重建单元使用校正处理之后的成像信号来重建图像。

公开(公告)号：US20070066886A1

公开(公告)日：2007-03-22

申请号：US11231878

申请日：2005-09-22

申请人： Shigehide Kuhara ,  Masao Yui ,  Yoshimori Kassai

发明人： Shigehide Kuhara ,  Masao Yui ,  Yoshimori Kassai

IPC分类号： A61B5/05

CPC分类号： G01R33/5673

摘要： Scanning operation of acquiring data by repeating a scan based on the same encoding pattern at least once by using an R wave occurring at time T0 as a trigger is executed with respect to all encoding patterns. The necessary number of data for image reconstruction are extracted from MR data acquired by temporally retrospecting from the R wave occurrence time (time T1) next to the R wave (time T0) used as the trigger on the basis of the obtained data, data acquisition time information, and the R wave time. The extracted data are then rearranged to generate a data set for imaging the movement of the heart which is associated with end-diastole after the occurrence of the R wave used as the trigger, thereby performing image reconstruction.

摘要翻译： 针对所有编码模式执行通过使用在时间T 0出现的R波作为触发而至少通过一次重复基于相同编码模式的扫描来获取数据的扫描操作。 从R波旁边的R波发生时间（时间T 1> 1）通过时间回顾获取的MR数据中提取必要数量的用于图像重构的数据（时间T 0 ）用作基于所获得的数据，数据获取时间信息和R波时间的触发。 然后将所提取的数据重新排列，以产生用于对作为触发器的R波出现之后与舒张末期相关的心脏运动进行成像的数据组，从而进行图像重建。

公开(公告)号：US06002254A

公开(公告)日：1999-12-14

申请号：US16267

申请日：1998-01-30

申请人： Yoshimori Kassai ,  Shoichi Kanayama ,  Shigehide Kuhara ,  Arturo Calderon

发明人： Yoshimori Kassai ,  Shoichi Kanayama ,  Shigehide Kuhara ,  Arturo Calderon

IPC分类号： G01R33/48 ,  A61B5/055 ,  G01R33/56 ,  G01R33/563 ,  G01V3/00

CPC分类号： G01R33/4806 ,  G01R33/5616 ,  G01R33/563

摘要： A nuclear magnetic resonance imaging scheme suitable for an imaging of a physiological function information on a living body. The scheme uses a pulse sequence for realizing a first imaging scheme for obtaining the blood vessel image and a second imaging scheme for obtaining the physiological function image such as a brain function image by a single execution of the pulse sequence, where the first imaging scheme is executed before the second imaging scheme by controlling resolutions and imaging regions for the respective imaging schemes appropriately. The pulse sequence can also realize a third imaging scheme for obtaining the physical shape image, which is to be executed between the first imaging scheme and the second imaging scheme. The physiological function image can be obtained by selecting valid data from the image data acquired with/without stimulation or load by using the t-test, and determining active portions from the selected valid data by using the paired t-test. The physiological function image can then be displayed in superposition with the blood vessel image and/or the physical shape image.

摘要翻译： 一种核磁共振成像方案，适用于对生物体的生理功能信息的成像。 该方案使用脉冲序列来实现用于获得血管图像的第一成像方案和用于通过单次执行脉搏序列来获得诸如脑功能图像的生理功能图像的第二成像方案，其中第一成像方案是 通过适当地控制各个成像方案的分辨率和成像区域，在第二成像方案之前执行。 脉冲序列还可以实现用于获得在第一成像方案和第二成像方案之间执行的物理形状图像的第三成像方案。 可以通过使用t检验从通过或不使用刺激或负载获取的图像数据中选择有效数据，并且通过使用配对t检验从选择的有效数据中确定活动部分来获得生理功能图像。 然后可以与血管图像和/或物理形状图像重叠显示生理功能图像。

公开(公告)号：US07920911B2

公开(公告)日：2011-04-05

申请号：US11208517

申请日：2005-08-23

申请人： Tsutomu Hoshino ,  Shigehide Kuhara ,  Hitoshi Yamagata ,  Yoshimori Kassai

发明人： Tsutomu Hoshino ,  Shigehide Kuhara ,  Hitoshi Yamagata ,  Yoshimori Kassai

IPC分类号： A61B5/05

CPC分类号： G01R33/287

摘要： A magnetic resonance imaging system for interventional MR imaging involves operations to insert a device such as a catheter into an object. According to the system, a tip position of the catheter is detected, data indicative of moved loci of the catheter are produced from data indicative of the detected tip position, and the produced movement locus data are displayed. In addition, even when an operator changes the progress direction of the device such as a puncture needle, an imaging cross-section automatically tracks movements of the device. Appropriate preoperative planning is also provided.

摘要翻译： 用于介入MR成像的磁共振成像系统涉及将诸如导管的装置插入物体的操作。 根据该系统，检测导管的尖端位置，从表示检测到的尖端位置的数据产生表示导管的移动轨迹的数据，并显示所产生的运动轨迹数据。 此外，即使操作者改变诸如穿刺针的装置的进行方向，成像横截面自动跟踪装置的移动。 还提供了适当的术前规划。

公开(公告)号：US20060058633A1

公开(公告)日：2006-03-16

申请号：US11208517

申请日：2005-08-23

申请人： Tsutomu Hoshino ,  Shigehide Kuhara ,  Hitoshi Yamagata ,  Yoshimori Kassai

发明人： Tsutomu Hoshino ,  Shigehide Kuhara ,  Hitoshi Yamagata ,  Yoshimori Kassai

IPC分类号： A61B5/05

CPC分类号： G01R33/287

摘要： A magnetic resonance imaging system for interventional MR imaging involves operations to insert a device such as a catheter into an object. According to the system, a tip position of the catheter is detected, data indicative of moved loci of the catheter are produced from data indicative of the detected tip position, and the produced movement locus data are displayed. In addition, even when an operator changes the progress direction of the device such as a puncture needle, an imaging cross-section automatically tracks movements of the device. Appropriate preoperative planning is also provided.

摘要翻译： 用于介入MR成像的磁共振成像系统涉及将诸如导管的装置插入物体的操作。 根据该系统，检测出导管的尖端位置，从表示检测到的尖端位置的数据产生表示导管的移动轨迹的数据，并且显示所产生的运动轨迹数据。 此外，即使操作者改变诸如穿刺针的装置的进行方向，成像横截面自动跟踪装置的移动。 还提供了适当的术前规划。

公开(公告)号：US06961608B2

公开(公告)日：2005-11-01

申请号：US09871712

申请日：2001-06-04

申请人： Tsutomu Hoshino ,  Shigehide Kuhara ,  Hitoshi Yamagata ,  Yoshimori Kassai

发明人： Tsutomu Hoshino ,  Shigehide Kuhara ,  Hitoshi Yamagata ,  Yoshimori Kassai

IPC分类号： G01R33/28 ,  A61B5/05

CPC分类号： G01R33/287

摘要： A magnetic resonance imaging system for interventional MR imaging involves operations to insert a device such as a catheter into an object. According to the system, a tip position of the catheter is detected, data indicative of moved loci of the catheter are produced from data indicative of the detected tip position, and the produced movement locus data are displayed. In addition, even when an operator changes the progress direction of the device such as a puncture needle, an imaging cross-section automatically tracks movements of the device. Appropriate preoperative planning is also provided.

摘要翻译： 用于介入MR成像的磁共振成像系统涉及将诸如导管的装置插入物体的操作。 根据该系统，检测导管的尖端位置，从表示检测到的尖端位置的数据产生表示导管的移动轨迹的数据，并显示所产生的运动轨迹数据。 此外，即使操作者改变诸如穿刺针的装置的进行方向，成像横截面自动跟踪装置的移动。 还提供了适当的术前规划。