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1. 发明授权

US07821267B2 Magnetic resonance imaging method and apparatus 有权
标题翻译：磁共振成像方法和装置
公开(公告)号：US07821267B2
公开(公告)日：2010-10-26
申请号：US11916130
申请日：2006-05-30
申请人： Yumiko Yatsui , Koji Kajiyama , Hideki Kumai , Tetsuhiko Takahashi
发明人： Yumiko Yatsui , Koji Kajiyama , Hideki Kumai , Tetsuhiko Takahashi
IPC分类号： G01V3/00
CPC分类号： A61B5/0555 , G01R33/4833 , G01R33/4835 , G01R33/56375 , G01R33/56383
摘要： In an imaging according to the step moving method, a slice imaging condition with respect to each station is optimized, thereby enabling an efficient imaging. A controller of an MRI apparatus displays positioning frames 601 to 606, and operation handles 607 and 608 thereof, in order to set a slice imaging condition at every various positions (stations) of a table on which a test object is mounted. By manipulating the positioning frames and the operation handles via I/O unit, the slice imaging condition is set. According to this slice imaging condition, imaging at each station position of the table is executed.
摘要翻译：在根据步进移动方法的成像中，优化相对于每个站的切片成像条件，从而能够进行有效的成像。 MRI装置的控制器显示定位帧601至606及其操作手柄607和608，以便在安装有测试对象的表的每个各个位置（站）处设置切片成像条件。通过I / O单元操作定位框和操作手柄，设置切片成像条件。根据该切片成像条件，执行表的各台位置的成像。

2. 发明授权

US07635978B2 Nuclear magnetic resonance imaging apparatus and method 失效
标题翻译：核磁共振成像装置及方法
公开(公告)号：US07635978B2
公开(公告)日：2009-12-22
申请号：US11918082
申请日：2006-03-22
申请人： Tetsuhiko Takahashi , Yumiko Yatsui , Koji Kajiyama , Hideki Kumai
发明人： Tetsuhiko Takahashi , Yumiko Yatsui , Koji Kajiyama , Hideki Kumai
IPC分类号： G01V3/00
CPC分类号： G01R33/56375 , G01R33/56383
摘要： A control means controls an imaging means for taking an image of a test object by a magnetic resonance, the test object being placed in an imaging space, and a transfer means that moves the test object, and on the basis of a difference (moving distance) between a position of the transfer means at the time of receiving a command of pausing the imaging and a position of the transfer means at the time of resuming the imaging, the control means controls the position of the transfer means or the position for imaging at the time of resuming, in such a manner that missing of data 503 caused by the difference can be compensated. With this configuration, it is possible to provide an MRI apparatus that is provided with an imaging pause function, and even when the pause function is activated, there is data consistency between the data before the pausing and the data after the resuming, thereby obtaining a high quality image.
摘要翻译：控制装置控制用于通过磁共振，测试对象被放置在成像空间中的测试对象的图像和移动测试对象的传送装置，并且基于差异（移动距离）在接收到暂停成像的命令时的传送装置的位置与恢复成像时的传送装置的位置之间，控制装置控制传送装置的位置或成像的位置以这种方式恢复的时间，可以补偿由差异引起的数据503的丢失。通过该结构，能够提供具有成像暂停功能的MRI装置，即使暂停功能被激活，暂停前的数据与恢复后的数据之间存在数据一致性，从而获得高质量的图像。

3. 发明申请

US20090066328A1 Nuclear Magnetic Resonance Imaging Apparatus and Method 失效
标题翻译：核磁共振成像装置及方法
公开(公告)号：US20090066328A1
公开(公告)日：2009-03-12
申请号：US11918082
申请日：2006-03-22
申请人： Tetsuhiko Takahashi , Yumiko Yatsui , Koji Kajiyama , Hideki Kumai
发明人： Tetsuhiko Takahashi , Yumiko Yatsui , Koji Kajiyama , Hideki Kumai
IPC分类号： G01R33/48
CPC分类号： G01R33/56375 , G01R33/56383
摘要： A control means controls an imaging means for taking an image of a test object by a magnetic resonance, the test object being placed in an imaging space, and a transfer means that moves the test object, and on the basis of a difference (moving distance) between a position of the transfer means at the time of receiving a command of pausing the imaging and a position of the transfer means at the time of resuming the imaging, the control means controls the position of the transfer means or the position for imaging at the time of resuming, in such a manner that missing of data 503 caused by the difference can be compensated. With this configuration, it is possible to provide an MRI apparatus that is provided with an imaging pause function, and even when the pause function is activated, there is data consistency between the data before the pausing and the data after the resuming, thereby obtaining a high quality image.
摘要翻译：控制装置控制用于通过磁共振，测试对象被放置在成像空间中的测试对象的图像和移动测试对象的传送装置，并且基于差异（移动距离）在接收到暂停成像的命令时的传送装置的位置与恢复成像时的传送装置的位置之间，控制装置控制传送装置的位置或成像的位置以这种方式恢复的时间，可以补偿由差异引起的数据503的丢失。通过该结构，能够提供具有成像暂停功能的MRI装置，即使暂停功能被激活，暂停前的数据与恢复后的数据之间存在数据一致性，从而获得高质量的图像。

4. 发明授权

US08027713B2 Magnetic resonance imaging apparatus and image processing method 有权
标题翻译：磁共振成像装置及图像处理方法
公开(公告)号：US08027713B2
公开(公告)日：2011-09-27
申请号：US10474313
申请日：2002-04-11
申请人： Yumiko Yatsui , Tetsuhiko Takahashi
发明人： Yumiko Yatsui , Tetsuhiko Takahashi
IPC分类号： A61B5/05
CPC分类号： G01R33/56563 , G01R33/4828
摘要： A magnetic resonance imaging apparatus having control unit for fetching a plurality of image data and obtaining an image by a calculation. The control unit performs an unwrap processing to a plurality of regions for removing a main value of a phase rotation amount so as to obtain a distribution diagram of a phase rotation amount caused by magnetostatic unevenness, obtains a plurality of evaluation values based on the phase value between a plurality of regions, selects a desired evaluation value based on the phase value from the plurality of evaluation values, and adjusts the phase values between the regions in accordance with the desired evaluation value.
摘要翻译：一种磁共振成像设备，具有用于取出多个图像数据并通过计算获得图像的控制单元。控制单元对多个区域执行解包处理，以消除相位旋转量的主值，以获得由静磁不均匀引起的相位旋转量的分布图，基于相位值获得多个评估值在多个区域之间，基于来自多个评估值的相位值选择期望的评估值，并根据期望的评价值调整各区域之间的相位值。

5. 发明授权

US07684847B2 Magnetic resonance imaging method and apparatus 失效
标题翻译：磁共振成像方法和装置
公开(公告)号：US07684847B2
公开(公告)日：2010-03-23
申请号：US10570397
申请日：2004-09-03
申请人： Hiroyuki Itagaki , Tomohiro Goto , Yumiko Yatsui , Tetsuhiko Takahashi
发明人： Hiroyuki Itagaki , Tomohiro Goto , Yumiko Yatsui , Tetsuhiko Takahashi
IPC分类号： A61B5/055
CPC分类号： G01R33/563 , G01R33/5601 , G01R33/5602 , G01R33/5614 , G01R33/5635 , G01R33/565 , G01R33/56509 , G01R33/5673 , G01R33/5676
摘要： When performing imaging in synchronization with a biological movement of an examinee by using a pulse sequence applying a pre-saturation pulse, it is possible to reduce irregularities of echo signal intensity and artifact on the image generated by the irregularities. Especially, it is possible to prevent artifact attributed to blood in the ventricle when performing delay contrast imaging. For this, before measuring the echo signal, an IR pulse or the like for adjusting magnetization to a desired state is applied so as to suppress irregularities of the echo signal intensity and prevent artifact.
摘要翻译：当通过使用施加预饱和脉冲的脉冲序列与被检体的生物运动同步地进行成像时，可以减少由不规则性产生的图像上的回波信号强度和伪影的不规则性。特别地，当进行延迟对比度成像时，可以防止归因于心室中的血液的伪像。为此，在测量回波信号之前，施加用于将磁化调整到期望状态的IR脉冲等，以便抑制回波信号强度的不规则并防止伪影。

6. 发明授权

US06906515B2 Magnetic resonance imaging device and method 失效
标题翻译：磁共振成像装置及方法
公开(公告)号：US06906515B2
公开(公告)日：2005-06-14
申请号：US10465976
申请日：2001-12-27
申请人： Yumiko Yatsui , Tetsuhiko Takahashi , Hiroyuki Takeuchi
发明人： Yumiko Yatsui , Tetsuhiko Takahashi , Hiroyuki Takeuchi
IPC分类号： A61B5/055 , G01R33/54 , G01V3/00
CPC分类号： G01R33/4828 , A61B5/055
摘要： When data of plural original images having different echo times are acquired to produce water/fat separated images by performing an processing operations in an MRI apparatus, a partial region of the original image data is specified and the specified region is subjected to the water/fat separation processing. Since noise components included in the specified region are fewer than those in the original image data, errors occurring due to noise components during unwrapping and other such processing operations can be reduced and image quality degradation be suppressed. Therefore, water/fat separated images having an excellent image quality can be produced. When echoes having different echo times are generated, rewind pulses are applied ahead of the readout gradient magnetic fields to equalize the polarities of the readout gradient magnetic fields. Consequently, influence of application of gradient magnetic fields on echo signals can be suppressed and the accuracy of water/fat separation can be improved.
摘要翻译：获取具有不同回波时间的多个原始图像的数据，以通过在MRI装置中执行处理操作来产生水/脂肪分离的图像，指定原始图像数据的部分区域，并且指定区域经受水/脂肪分离处理。由于包含在指定区域中的噪声分量比原始图像数据中的噪声分量少，因此可以减少由于解包过程中的噪声成分而产生的误差和其他这样的处理操作，抑制了图像质量下降。因此，可以产生具有优异图像质量的水/脂肪分离图像。当产生具有不同回波时间的回波时，在读出梯度磁场之前施加倒带脉冲以均衡读出梯度磁场的极性。因此，可以抑制梯度磁场对回波信号的影响，并且可以提高水/油分离的精度。

7. 发明授权

US06728568B1 Magnetic resonance imaging method and device 失效
标题翻译：磁共振成像方法及装置
公开(公告)号：US06728568B1
公开(公告)日：2004-04-27
申请号：US09980433
申请日：2002-05-10
申请人： Yumiko Yatsui , Tetsuhiko Takahashi
发明人： Yumiko Yatsui , Tetsuhiko Takahashi
IPC分类号： A61B5055
CPC分类号： G01R33/56554 , A61B5/055 , A61B5/7257
摘要： In order to improve image quality in MRI using an EPI method without extending imaging time excessively, reference data is acquired in the absence of substantial phase encoding gradients by using an EPI sequence in combination with an echo shift (ETS) method, at times related to the timing of echo signals for image data. The reference data is used for phase correcting the image data acquired with application of phase encoding. The reference data can be measured for a single shot, or a few shots, and used to estimate reference data for the rest of the shots in which imaging data is acquired.
摘要翻译：为了使用EPI方法在不延长成像时间的情况下提高MRI中的图像质量，通过使用EPI序列与回波移位（ETS）方法组合，在没有实质相位编码梯度的情况下获取参考数据，有时与图像数据的回波信号的定时。参考数据用于相位校正通过应用相位编码获取的图像数据。可以对单次拍摄或几次拍摄来测量参考数据，并且用于估计拍摄成像数据的其余拍摄的参考数据。

8. 发明授权

US07196518B2 Magnetic resonance method which automatically forms water/fat separated images with different echo times and determines that proper phase unwrapping has been utilized 有权
标题翻译：自动形成具有不同回波时间的水/脂肪分离图像并确定已经利用适当的相位展开的磁共振方法
公开(公告)号：US07196518B2
公开(公告)日：2007-03-27
申请号：US10344430
申请日：2001-08-13
申请人： Yumiko Yatsui , Tetsuhiko Takahashi
发明人： Yumiko Yatsui , Tetsuhiko Takahashi
IPC分类号： G01R33/20 , G01V3/00 , A61B5/055
CPC分类号： G01R33/60 , A61B5/055 , A61B5/4872 , G01R33/4828 , G01R33/56563
摘要： A magnetic resonance imaging method for fully automatically forming a water/fat separated image by calculation after acquiring data on images of different echo times, wherein the unwrapping of a phase map showing the distribution of the phase rotation due to the inhomogeneous static magnetic field is repeated so as to determine the distribution of the inhomogeneous static magnetic field by using an index used for judging whether or not the unwrapping is properly being performed, and wherein during the formation of a water/fat separated image with correction of the static magnetic field, the unwrapping is automatically and properly performed in correcting the static magnetic field, and the water/fat images are automatically discriminated.
摘要翻译：一种磁共振成像方法，用于在获取关于不同回波时间的图像的数据之后通过计算完全自动形成水/脂肪分离图像，其中重复显示由于不均匀静磁场引起的相位旋转分布的相位图的展开以便通过使用用于判断是否正在进行展开的指标来确定非均匀静磁场的分布，并且其中在形成具有静态磁场校正的水/脂肪分离图像时，在对静态磁场进行校正时自动适当地进行解包，自动识别水/脂肪图像。

9. 发明申请

US20090309595A1 MAGNETIC RESONANCE IMAGING METHOD AND APPARATUS 有权
标题翻译：磁共振成像方法和装置
公开(公告)号：US20090309595A1
公开(公告)日：2009-12-17
申请号：US11916130
申请日：2006-05-30
申请人： Yumiko Yatsui
发明人： Yumiko Yatsui
IPC分类号： G01R33/48
CPC分类号： A61B5/0555 , G01R33/4833 , G01R33/4835 , G01R33/56375 , G01R33/56383
摘要： In an imaging according to the step moving method, a slice imaging condition with respect to each station is optimized, thereby enabling an efficient imaging. A controller of an MRI apparatus displays positioning frames 601 to 606, and operation handles 607 and 608 thereof, in order to set a slice imaging condition at every various positions (stations) of a table on which a test object is mounted. By manipulating the positioning frames and the operation handles via I/O unit, the slice imaging condition is set. According to this slice imaging condition, imaging at each station position of the table is executed.
摘要翻译：在根据步进移动方法的成像中，优化相对于每个站的切片成像条件，从而能够进行有效的成像。 MRI装置的控制器显示定位帧601至606及其操作手柄607和608，以便在安装有测试对象的表的每个各个位置（站）处设置切片成像条件。通过I / O单元操作定位框和操作手柄，设置切片成像条件。根据该切片成像条件，执行表的各台位置的成像。

10. 发明申请

US20070038069A1 Magnetic resonance imaging method and apparatus 失效
标题翻译：磁共振成像方法和装置
公开(公告)号：US20070038069A1
公开(公告)日：2007-02-15
申请号：US10570397
申请日：2004-09-03
申请人： Hiroyuki Itagaki , Tomohiro Goto , Yumiko Yatsui , Tetsuhiko Takahshi
发明人： Hiroyuki Itagaki , Tomohiro Goto , Yumiko Yatsui , Tetsuhiko Takahshi
IPC分类号： A61B5/05
CPC分类号： G01R33/563 , G01R33/5601 , G01R33/5602 , G01R33/5614 , G01R33/5635 , G01R33/565 , G01R33/56509 , G01R33/5673 , G01R33/5676
摘要： When performing imaging in synchronization with a biological movement of an examinee by using a pulse sequence applying a pre-saturation pulse, it is possible to reduce irregularities of echo signal intensity and artifact on the image generated by the irregularities. Especially, it is possible to prevent artifact attributed to blood in the ventricle when performing delay contrast imaging. For this, before measuring the echo signal, an IR pulse or the like for adjusting magnetization to a desired state is applied so as to suppress irregularities of the echo signal intensity and prevent artifact.
摘要翻译：当通过使用施加预饱和脉冲的脉冲序列与被检体的生物运动同步地进行成像时，可以减少由不规则性产生的图像上的回波信号强度和伪影的不规则性。特别地，当进行延迟对比度成像时，可以防止归因于心室中的血液的伪像。为此，在测量回波信号之前，施加用于将磁化调整到期望状态的IR脉冲等，以便抑制回波信号强度的不规则并防止伪影。

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