公开(公告)号：US09474455B2

公开(公告)日：2016-10-25

申请号：US12763643

申请日：2010-04-20

申请人： Mitsue Miyazaki ,  Shigehide Kuhara

发明人： Mitsue Miyazaki ,  Shigehide Kuhara

IPC分类号： A61B5/029 ,  G01R33/563 ,  A61B5/00 ,  G01R33/483 ,  G01R33/54 ,  G01R33/56

CPC分类号： A61B5/029 ,  A61B5/0037 ,  A61B5/0263 ,  A61B5/0402 ,  A61B5/7271 ,  A61B5/742 ,  G01R33/385 ,  G01R33/4833 ,  G01R33/543 ,  G01R33/5601 ,  G01R33/5608 ,  G01R33/5635 ,  G01R33/56366

摘要： According to one of the aspects of an MRI apparatus of the present invention, the MRI apparatus includes an imaging data acquiring unit and a blood flow information generating unit. The imaging data acquiring unit acquires imaging data from an imaging region including myocardium, without using a contrast medium, by applying a spatial selective excitation pulse to a region including at least a part of an ascending aorta for distinguishably displaying inflowing blood flowing into the imaging region. The blood flow information generating unit generates blood flow image data based on the imaging data.

摘要翻译： 根据本发明的MRI装置的一个方面，MRI装置包括成像数据获取单元和血流信息生成单元。 成像数据获取单元通过将空间选择激励脉冲施加到包括升序主动脉的至少一部分的区域，从而可以不使用造影剂从包括心肌的成像区域获取成像数据，以区分地显示流入成像区域的流入血液 。 血流信息生成部基于摄像数据生成血流图像数据。

公开(公告)号：US20110071382A1

公开(公告)日：2011-03-24

申请号：US12763643

申请日：2010-04-20

申请人： Mitsue Miyazaki ,  Shigehide Kuhara

发明人： Mitsue Miyazaki ,  Shigehide Kuhara

IPC分类号： A61B5/055

CPC分类号： A61B5/029 ,  A61B5/0037 ,  A61B5/0263 ,  A61B5/0402 ,  A61B5/7271 ,  A61B5/742 ,  G01R33/385 ,  G01R33/4833 ,  G01R33/543 ,  G01R33/5601 ,  G01R33/5608 ,  G01R33/5635 ,  G01R33/56366

摘要： According to one of the aspects of an MRI apparatus of the present invention, the MRI apparatus includes an imaging data acquiring unit and a blood flow information generating unit. The imaging data acquiring unit acquires imaging data from an imaging region including myocardium, without using a contrast medium, by applying a spatial selective excitation pulse to a region including at least a part of an ascending aorta for distinguishably displaying inflowing blood flowing into the imaging region. The blood flow information generating unit generates blood flow image data based on the imaging data.

摘要翻译： 根据本发明的MRI装置的一个方面，MRI装置包括成像数据获取单元和血流信息生成单元。 成像数据获取单元通过将空间选择激励脉冲施加到包括升序主动脉的至少一部分的区域，从而可以不使用造影剂从包括心肌的成像区域获取成像数据，以区分地显示流入成像区域的流入血液 。 血流信息生成部基于摄像数据生成血流图像数据。

公开(公告)号：US20100094121A1

公开(公告)日：2010-04-15

申请号：US12579500

申请日：2009-10-15

申请人： Shigehide Kuhara

发明人： Shigehide Kuhara

IPC分类号： A61B5/055

CPC分类号： A61B5/113 ,  A61B5/055 ,  A61B5/7285 ,  G01R33/5676

摘要： A magnetic resonance imaging apparatus includes a collection unit which collects a magnetic resonance signal from the subject by applying a uniform static magnetic field to a subject and also applies a radio-frequency magnetic field and a gradient magnetic field to the subject in accordance with a predetermined pulse sequence, a reconstruction unit which reconstructs an image concerning the subject based on the magnetic resonance signal collected by the collection unit, a detection unit which detects a respiration level of the subject, a control unit which controls the reconstruction unit to reconstruct the image based on the magnetic resonance signal collected by the collection unit in a state wherein a peak of the detected respiration level falls within an allowable range, and a change unit which changes the allowable range based on a change in a plurality of peak values of a plurality detected respiration levels.

摘要翻译： 磁共振成像装置包括：收集单元，其通过向对象施加均匀的静磁场来收集来自对象的磁共振信号，并且还根据预定的方式向对象施加射频磁场和梯度磁场 脉冲序列，重建单元，其基于由所述收集单元收集的磁共振信号重建与所述对象有关的图像;检测单元，其检测所述被摄体的呼吸水平;控制单元，其控制所述重建单元重建所述图像 在所检测到的呼吸水平的峰值落在容许范围内的状态下由收集单元收集的磁共振信号，以及改变单元，其基于多个检测到的多个峰值的变化而改变容许范围 呼吸水平

公开(公告)号：US07514929B2

公开(公告)日：2009-04-07

申请号：US11653430

申请日：2007-01-16

申请人： Shigehide Kuhara ,  Hirofumi Anno ,  Masato Ikedo

发明人： Shigehide Kuhara ,  Hirofumi Anno ,  Masato Ikedo

IPC分类号： G01V3/00

CPC分类号： G01R33/3875

摘要： A magnetic resonance imaging apparatus includes a collector which collects magnetic resonance signals emitted from a region of interest of a subject, and a correction magnetic field generator which generates a correction magnetic field to correct the nonuniformity of a static magnetic field on the basis of magnetic resonance signals which are contained in the magnetic resonance signals collected by the collector, are emitted from a specific region which forms a portion of the region of interest.

摘要翻译： 磁共振成像装置包括收集从受检者的感兴趣区域发射的磁共振信号的收集器和产生校正磁场的校正磁场发生器，以校正基于磁共振的静态磁场的不均匀性 包含在由收集器收集的磁共振信号中的信号从形成感兴趣区域的一部分的特定区域发射。

公开(公告)号：US20080281186A1

公开(公告)日：2008-11-13

申请号：US12149587

申请日：2008-05-05

申请人： Shigehide Kuhara

发明人： Shigehide Kuhara

IPC分类号： A61B5/055

CPC分类号： A61B5/055 ,  A61B5/7207 ,  A61B5/7285 ,  A61B6/541 ,  G01R33/283 ,  G01R33/563 ,  G01R33/5635 ,  G01R33/56509 ,  G01R33/5676

摘要： A magnetic resonance imaging apparatus includes a collection unit which applies a uniform static magnetic field to a subject and also applies a radio-frequency magnetic field and a gradient magnetic field to the subject in accordance with a predetermined pulse sequence to collect a magnetic resonance signal from the subject, a imaging unit which images the subject based on the magnetic resonance signal collected by the collection unit, a detection unit which detects a respiratory level of the subject, an informing unit which informs the subject of whether the detected respiratory level falls within an allowable range, and a unit which controls the collection unit and the imaging unit in such a manner that the magnetic resonance signal for imaging is collected and the subject is imaged based on the thus collected magnetic resonance signal for imaging when the detected respiratory level falls within the allowable range.

摘要翻译： 磁共振成像装置包括：收集单元，其对受试者施加均匀的静态磁场，并且还根据预定的脉冲序列向受试者施加射频磁场和梯度磁场，以收集来自 所述被摄体，基于由所述收集单元收集的磁共振信号对被摄体进行成像的成像单元，检测所述被检体的呼吸水平的检测单元，通知所述被检者的检测到的呼吸水平是否在 以及控制收集单元和成像单元的单元，使得当检测到的呼吸水平落入内部时，基于用于成像的所收集的磁共振信号来收集用于成像的磁共振信号并且对象被成像 允许范围。

公开(公告)号：US20070145978A1

公开(公告)日：2007-06-28

申请号：US11594111

申请日：2006-11-08

申请人： Shigehide Kuhara

发明人： Shigehide Kuhara

IPC分类号： G01V3/00

CPC分类号： G01R33/56383 ,  G01R33/543 ,  G01R33/5611 ,  G01R33/5635 ,  G01R33/56375

摘要： A magnetic resonance imaging system performing various types of imaging that involves movement of a patient's couch. The system has a patient's couch having a tabletop movable in a predetermined direction passing through a static magnetic field as well as reception multiple RF coils consisting of for example a plurality of coil groups. The tabletop is automatically moved in its longitudinal direction in accordance with a length of each coil group in the predetermined direction. At each moved position, scanning is performed on a given pulse sequence. An echo signal is received through the multiple RF coils, then switched over by an input switchover unit to be sent to a receiving-system circuit. The echo signal is subjected to given processing in this circuit so that it is converted to echo data. The echo data are produced into an MR image by a host computer.

公开(公告)号：US4859946A

公开(公告)日：1989-08-22

申请号：US251099

申请日：1988-09-29

申请人： Shigehide Kuhara

发明人： Shigehide Kuhara

IPC分类号： G01R33/32 ,  A61B5/055 ,  A61B10/00 ,  G01R33/44 ,  G01R33/48 ,  G01R33/561 ,  G01R33/565

CPC分类号： G01R33/56554 ,  G01R33/56518

摘要： A magnetic resonance imaging system includes a magnetic resonance exciting unit having an imaging mode which is executed such that a slicing gradient field and a high-frequency field are applied to an object placed in a uniform static field to excite a slice of the object, a read gradient field which is repeatedly switched is applied to the object, and a phase-encoding gradient field is applied to the object, thereby generating a series of echo signals, a data acquiring unit for sampling and acquiring the echo signals generated by the exciting unit, and an image forming unit for performing image reconstruction using sampling data obtained in the imaging mode of the exciting unit. The exciting unit also has an echo position detection mode which is executed such that the fields except for phase-encoded gradient field are applied to the object to excite the slice of the object in the same manner as in the imaging mode, and to generate a series of phase-nonencoded magnetic resonance echo signals. A peak position detector detects peak positions of the series of echo signals on the basis of an operation in the echo position detection mode of the exciting unit. A correcting unit substantially corrects generation timing errors of the echo signals in the imaging mode based on the peak positions.

公开(公告)号：US09591988B2

公开(公告)日：2017-03-14

申请号：US13287268

申请日：2011-11-02

申请人： Shigehide Kuhara ,  Shuhei Nitta ,  Tomoyuki Takeguchi ,  Nobuyuki Matsumoto

发明人： Shigehide Kuhara ,  Shuhei Nitta ,  Tomoyuki Takeguchi ,  Nobuyuki Matsumoto

IPC分类号： A61B5/055 ,  A61B5/00 ,  G01R33/483 ,  G01R33/54 ,  A61B5/0456 ,  G01R33/567

CPC分类号： A61B5/055 ,  A61B5/0037 ,  A61B5/0044 ,  A61B5/0456 ,  G01R33/385 ,  G01R33/4833 ,  G01R33/543 ,  G01R33/5673

摘要： According to one embodiment, a MRI apparatus includes an acquisition unit, a reference section information calculating unit, a positioning unit and an imaging unit. The acquisition unit acquires frames of section image data including a heart from an object with use of magnetic resonance. The reference section information calculating unit calculates spatial positional information of a reference section of the heart based on the frames of the section image data. The positioning unit displays a reference section image of the heart on a display unit and performs positioning of an imaging part for imaging through the displayed reference section image of the heart. The reference section image is calculated from the frames of the section image data based on the positional information of the reference section. The imaging unit images the imaging part set by the positioning.

摘要翻译： 根据一个实施例，MRI装置包括获取单元，参考部分信息计算单元，定位单元和成像单元。 采集单元使用磁共振从物体获取包括心脏的区域图像数据的帧。 参考部分信息计算单元基于截面图像数据的帧来计算心脏的基准部分的空间位置信息。 定位单元在显示单元上显示心脏的参考部分图像，并且通过所显示的心脏的参考部分图像执行用于成像的成像部件的定位。 基于参考部分的位置信息，根据截面图像数据的帧计算参考部分图像。 成像单元通过定位对成像部件进行成像。

公开(公告)号：US08971992B2

公开(公告)日：2015-03-03

申请号：US12149587

申请日：2008-05-05

申请人： Shigehide Kuhara

发明人： Shigehide Kuhara

IPC分类号： A61B5/05 ,  A61B5/055 ,  G01R33/563 ,  G01R33/567 ,  A61B5/00 ,  G01R33/28 ,  G01R33/565 ,  A61B6/00

CPC分类号： A61B5/055 ,  A61B5/7207 ,  A61B5/7285 ,  A61B6/541 ,  G01R33/283 ,  G01R33/563 ,  G01R33/5635 ,  G01R33/56509 ,  G01R33/5676

摘要： A magnetic resonance imaging apparatus includes a collection unit which applies a uniform static magnetic field to a subject and also applies a radio-frequency magnetic field and a gradient magnetic field to the subject in accordance with a predetermined pulse sequence to collect a magnetic resonance signal from the subject, a imaging unit which images the subject based on the magnetic resonance signal collected by the collection unit, a detection unit which detects a respiratory level of the subject, an informing unit which informs the subject of whether the detected respiratory level falls within an allowable range, and a unit which controls the collection unit and the imaging unit in such a manner that the magnetic resonance signal for imaging is collected and the subject is imaged based on the thus collected magnetic resonance signal for imaging when the detected respiratory level falls within the allowable range.

摘要翻译： 磁共振成像装置包括：收集单元，其对受试者施加均匀的静态磁场，并且还根据预定的脉冲序列向受试者施加射频磁场和梯度磁场，以收集来自 所述被摄体，基于由所述收集单元收集的磁共振信号对被摄体进行成像的成像单元，检测所述被检体的呼吸水平的检测单元，通知所述被检者的检测到的呼吸水平是否在 以及控制收集单元和成像单元的单元，使得当检测到的呼吸水平落入内部时，基于用于成像的所收集的磁共振信号来收集用于成像的磁共振信号并且对象被成像 允许范围。

公开(公告)号：US08781553B2

公开(公告)日：2014-07-15

申请号：US13107109

申请日：2011-05-13

申请人： Shigehide Kuhara

发明人： Shigehide Kuhara

IPC分类号： A61B5/05 ,  A61B5/055 ,  A61B6/00 ,  A61B5/00

CPC分类号： A61B5/055 ,  A61B5/7207 ,  A61B5/7285 ,  A61B6/541 ,  G01R33/283 ,  G01R33/563 ,  G01R33/5635 ,  G01R33/56509 ,  G01R33/5676

摘要： A magnetic resonance imaging apparatus includes a collection unit that applies a uniform static magnetic field to a subject and also applies a radio-frequency magnetic field and a gradient magnetic field to the subject in accordance with a predetermined pulse sequence to collect a magnetic resonance signal from the subject, an imaging unit that images the subject based on the magnetic resonance signal collected by the collection unit, a detection unit that detects a respiratory level of the subject, an informing unit that informs the subject of whether the detected respiratory level falls within an allowable range, and a unit that controls the collection unit and the imaging unit in such a manner that the magnetic resonance signal for imaging is collected and the subject is imaged based on the thus collected magnetic resonance signal for imaging when the detected respiratory level falls within the allowable range.

摘要翻译： 磁共振成像装置包括：向受检者施加均匀的静磁场的收集单元，并且根据预定的脉冲序列向受检者施加射频磁场和梯度磁场，以收集来自 所述被摄物，成像单元，其基于由所述收集单元收集的磁共振信号对所述被摄体进行成像;检测单元，其检测所述被检体的呼吸水平;通知单元，其向所述被检者通知检测到的呼吸水平是否在 以及控制收集单元和成像单元的单元，使得当检测到的呼吸水平落在内部时，基于如此收集的用于成像的磁共振信号，用于成像的磁共振信号被收集并且对象被成像 允许范围。