专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100327871A1 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：US20100327871A1
公开(公告)日：2010-12-30
申请号：US12826055
申请日：2010-06-29
申请人： Mitsuharu Miyoshi
发明人： Mitsuharu Miyoshi
IPC分类号： G01R33/48
CPC分类号： G01R33/5659 , G01R33/5602 , G01R33/5635
摘要： A magnetic resonance imaging (MRI) apparatus sequentially transmits a plurality of radio frequency (RF) pulses for refocusing transverse magnetization of spins, and brings the transverse magnetization of the spins to longitudinal magnetization after the refocusing of the transverse magnetization of the spins.
摘要翻译：磁共振成像（MRI）装置顺序地发送用于重新聚焦自旋横向磁化的多个射频（RF）脉冲，并且在自旋的横向磁化重新聚焦之后使自旋的横向磁化强度达到纵向磁化强度。

2. 发明授权

US07564242B2 MR data acquisition method, MR image construction method, and MRI system 失效
标题翻译： MR数据采集方法，MR图像构建方法和MRI系统
公开(公告)号：US07564242B2
公开(公告)日：2009-07-21
申请号：US12049776
申请日：2008-03-17
申请人： Mitsuharu Miyoshi , Aki Yamazaki
发明人： Mitsuharu Miyoshi , Aki Yamazaki
IPC分类号： G01V3/00
CPC分类号： G01R33/4828 , G01R33/5613
摘要： An MR data acquisition method for acquiring data D_φfat according to a steady-state pulse sequence specifying that a phase of an RF pulse is varied in order of 0, 1×φfat, 2×φfat, etc., wherein φfat=(2−TR/T_out+2×m)×π is established on an assumption that m denotes an integer equal to or larger than 0 and meets TR/(2×T_out)−1
摘要翻译：一种MR数据采集方法，用于根据指定RF脉冲的相位以0，1xphifat，2xphifat等的顺序变化的稳态脉冲序列获取数据D_phifat，其中phifat =（2-TR / T_out + 2xm ）xpi是基于m表示等于或大于0并且满足TR /（2xT_out）-1

3. 发明授权

US07514925B2 Magnetic resonance imaging apparatus and magnetic resonance imaging method 失效
标题翻译：磁共振成像装置和磁共振成像方法
公开(公告)号：US07514925B2
公开(公告)日：2009-04-07
申请号：US11866805
申请日：2007-10-03
申请人： Mitsuharu Miyoshi
发明人： Mitsuharu Miyoshi
IPC分类号： G01V3/00
CPC分类号： G01R33/5635 , G01R33/5607 , G01R33/5617 , G01R33/56316 , G01R33/56509
摘要： With the objective of easily drawing a flow such as a bloodstream in a subject at low luminance, there is provided a magnetic resonance imaging apparatus including a static magnetic field forming unit, a transmission unit which transmits a plurality of inversion RF pulses to a subject lying in a static magnetic field plural times within one repetition time after transmission of one excitation RF pulse thereby to excite spins of the subject, a gradient magnetic field application unit, a data acquisition unit which acquires magnetic resonance signals encoded by the gradient magnetic field, and an image generation unit which generates an image of the subject based on the magnetic resonance signals acquired by the data acquisition unit. The gradient magnetic field application unit applies velocity encode gradient pulses inverted to one another in polarity to the subject within transmission interval times for the plural RF pulses transmitted to the subject.
摘要翻译：为了容易地以较低的亮度在受试者中画出血流的流动，提供了一种磁共振成像装置，该磁共振成像装置包括静磁场形成单元，将多个反转RF脉冲发送到被摄体位置的发送单元在一个激励RF脉冲发射之后的一个重复时间内多次静态磁场，从而激发被摄体的自旋，梯度磁场施加单元，获取由梯度磁场编码的磁共振信号的数据获取单元，以及图像生成单元，其基于由数据获取单元获取的磁共振信号来生成被摄体的图像。梯度磁场施加单元对发送到被摄体的多个RF脉冲的发送间隔时间内的对象，向对象施加极性反转的速度编码梯度脉冲。

4. 发明申请

US20080084206A1 MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD 失效
标题翻译：磁共振成像装置和磁共振成像方法
公开(公告)号：US20080084206A1
公开(公告)日：2008-04-10
申请号：US11866805
申请日：2007-10-03
申请人： Mitsuharu Miyoshi
发明人： Mitsuharu Miyoshi
IPC分类号： G01R33/28
CPC分类号： G01R33/5635 , G01R33/5607 , G01R33/5617 , G01R33/56316 , G01R33/56509
摘要： With the objective of easily drawing a flow such as a bloodstream in a subject at low luminance, there is provided a magnetic resonance imaging apparatus including a static magnetic field forming unit, a transmission unit which transmits a plurality of inversion RF pulses to a subject lying in a static magnetic field plural times within one repetition time after transmission of one excitation RF pulse thereby to excite spins of the subject, a gradient magnetic field application unit, a data acquisition unit which acquires magnetic resonance signals encoded by the gradient magnetic field, and an image generation unit which generates an image of the subject based on the magnetic resonance signals acquired by the data acquisition unit. The gradient magnetic field application unit applies velocity encode gradient pulses inverted to one another in polarity to the subject within transmission interval times for the plural RF pulses transmitted to the subject.
摘要翻译：为了容易地以较低的亮度在受试者中画出血流的流动，提供了一种磁共振成像装置，该磁共振成像装置包括静磁场形成单元，将多个反转RF脉冲发送到被摄体位置的发送单元在一个激励RF脉冲发射之后的一个重复时间内多次静态磁场，从而激发被摄体的自旋，梯度磁场施加单元，获取由梯度磁场编码的磁共振信号的数据获取单元，以及图像生成单元，其基于由数据获取单元获取的磁共振信号来生成被摄体的图像。梯度磁场施加单元对发送到被摄体的多个RF脉冲的发送间隔时间内的对象，向对象施加极性反转的速度编码梯度脉冲。

5. 发明授权

US07336986B2 Magnetic resonance imaging apparatus 失效
标题翻译：磁共振成像装置
公开(公告)号：US07336986B2
公开(公告)日：2008-02-26
申请号：US10672662
申请日：2003-09-26
申请人： Mitsuharu Miyoshi , Susumu Kosugi
发明人： Mitsuharu Miyoshi , Susumu Kosugi
IPC分类号： A61B5/05 , A61B19/00 , G01V3/00
CPC分类号： G01R33/4828 , G01R33/5613
摘要： An apparatus includes acquiring means for acquiring echo data of a plurality of views in which a phase difference between water and fat is 2π/m with spins within a subject brought to the SSFP state and repeating the acquisition for k=0 through M−1 with a step difference in a phase of an RF pulse of 2π·k/M; transforming means for conducting Fourier transformation on the echo data based on the phase step difference; separating means for separating water data and fat data respectively in F(0) term and F(1) term of the Fourier-transformed data using the phase difference between water and fat; adding means for obtaining a sum of absolute values of at least the water data or fat data in the F(0) term and F(1) term; and image producing means for producing an image based on the sum data.
摘要翻译：一种装置，包括获取装置，用于获取多个视图中的回波数据，其中水和脂肪之间的相位差为2pi / m，与被摄体内的自旋进入SSFP状态，重复k = 0至M-1的采集， RF脉冲的相位差为2pi.k / M; 变换装置，用于基于相位差差对回波数据进行傅里叶变换; 分离装置，用于使用水和脂肪之间的相位差分别在傅立叶变换数据的F（0）项和F（1）项中分离水数据和脂肪数据; 添加用于获得F（0）项和F（1）项中的至少水分数据或脂肪数据的绝对值之和的装置; 以及图像产生装置，用于基于总和数据产生图像。

6. 发明授权

US06630827B1 Phase distribution measurement method and apparatus, phase correction method and apparatus, and magnetic resonance imaging apparatus 失效
标题翻译：相位分布测量方法和装置，相位校正方法和装置以及磁共振成像装置
公开(公告)号：US06630827B1
公开(公告)日：2003-10-07
申请号：US09685815
申请日：2000-10-10
申请人： Mitsuharu Miyoshi , Koichi Oshio
发明人： Mitsuharu Miyoshi , Koichi Oshio
IPC分类号： G01V300
CPC分类号： G01R33/565 , G01R33/56563
摘要： To efficiently calculate a precise phase map, phase differentials are calculated for each pixel of pixel data of an image, corresponding integrals are calculated for each pixel, and the phase map is formed using this integral. A phase correction of the image is performed using the phase map, and separate water/lipid images are formed from the phase-corrected image.
摘要翻译：为了有效地计算精确的相位图，对于图像的像素数据的每个像素计算相位差，对每个像素计算相应的积分，并且使用该积分形成相位图。使用相位图执行图像的相位校正，并且从相位校正图像形成单独的水/脂肪图像。

7. 发明授权

US08570036B2 Magnetic resonance imaging apparatus and method utilizing RF pulse flip angels 有权
标题翻译：磁共振成像装置和利用射频脉冲翻转天使的方法
公开(公告)号：US08570036B2
公开(公告)日：2013-10-29
申请号：US12826055
申请日：2010-06-29
申请人： Mitsuharu Miyoshi
发明人： Mitsuharu Miyoshi
IPC分类号： G01R33/48
CPC分类号： G01R33/5659 , G01R33/5602 , G01R33/5635
摘要： A magnetic resonance imaging (MRI) apparatus sequentially transmits a plurality of radio frequency (RF) pulses having flip angles of α1°, α2°, −α1°, and −α2° for refocusing transverse magnetization of spins, and brings the transverse magnetization of the spins to longitudinal magnetization after the refocusing of the transverse magnetization of the spins.
摘要翻译：磁共振成像（MRI）装置顺序地发送具有翻转角α1°，α2°，α1°和α2°的多个射频（RF）脉冲，以重新聚焦自旋的横向磁化，并且使横向磁化强度在自旋的横向磁化重新聚焦之后自旋到纵向磁化。

8. 发明申请

US20090270719A1 MRI APPARATUS 有权
标题翻译： MRI装置
公开(公告)号：US20090270719A1
公开(公告)日：2009-10-29
申请号：US12428286
申请日：2009-04-22
申请人： Mitsuharu MIYOSHI
发明人： Mitsuharu MIYOSHI
IPC分类号： A61B5/055 , G01R33/385
CPC分类号： G01R33/5635 , G01R33/5602 , G01R33/5607
摘要： An MRI apparatus which images a subject in such that body fluid that flows is emphasized over background tissues, includes a first coil control device that causes a transmission coil and a gradient coil to execute a first pulse sequence for causing longitudinal magnetization components of the background tissues to differ from a longitudinal magnetization component of the body fluid, a second coil control device that causes the transmission coil and the gradient coil to execute a second pulse sequence that inverts the longitudinal magnetization components of the body fluid and the background tissues a plurality of times after the execution of the first pulse sequence, and a third coil control device that causes the transmission coil and the gradient coil to execute a third pulse sequence for acquiring each MR signal of the body fluid after the execution of the second pulse sequence.
摘要翻译：一种MRI装置，其使被检体图像使得流过的体液在背景组织上被强调，包括：第一线圈控制装置，其使发送线圈和梯度线圈执行用于引起背景组织的纵向磁化分量的第一脉冲序列与体液的纵向磁化分量不同的第二线圈控制装置，其使得传输线圈和梯度线圈执行第二脉冲序列，以使体液和背景组织的纵向磁化分量反转多次以及第三线圈控制装置，其使得所述发送线圈和所述梯度线圈执行第三脉冲序列，以在执行所述第二脉冲序列之后获取所述体液的每个MR信号。

9. 发明申请

US20080157763A1 MR DATA ACQUISITION METHOD, MR IMAGE CONSTRUCTION METHOD, AND MRI SYSTEM 失效
标题翻译： MR数据采集方法，MR图像构造方法和MRI系统
公开(公告)号：US20080157763A1
公开(公告)日：2008-07-03
申请号：US12049776
申请日：2008-03-17
申请人： Mitsuharu Miyoshi , Aki Yamazaki
发明人： Mitsuharu Miyoshi , Aki Yamazaki
IPC分类号： G01R33/56
CPC分类号： G01R33/4828 , G01R33/5613
摘要： An MR data acquisition method for acquiring data D_φfat according to a steady-state pulse sequence specifying that a phase of an RF pulse is varied in order of 0, 1×φfat, 2×φfat, etc., wherein φfat=(2−TR/T_out+2×m)×π is established on an assumption that m denotes an integer equal to or larger than 0 and meets TR/(2×T_out)−1
摘要翻译：一种MR数据采集方法，用于根据指定RF脉冲的相位以0，1xphifat，2xphifat等的顺序变化的稳态脉冲序列获取数据D_phifat，其中phifat =（2-TR / T_out + 2xm ）xpi是基于m表示等于或大于0并且满足TR /（2xT_out）-1

10. 发明授权

US07365537B2 MR data acquisition method, MR image construction method, and MRI system 失效
标题翻译： MR数据采集方法，MR图像构建方法和MRI系统
公开(公告)号：US07365537B2
公开(公告)日：2008-04-29
申请号：US11049485
申请日：2005-02-01
申请人： Mitsuharu Miyoshi , Aki Yamazaki
发明人： Mitsuharu Miyoshi , Aki Yamazaki
IPC分类号： G01V3/00
CPC分类号： G01R33/4828 , G01R33/5613
摘要： An object of the present invention is to acquire data, which is used to construct a water component-enhanced/fat component-suppressed image, with a repetition time TR set to a desired value. Included are a data acquisition unit and an image construction unit. The data acquisition unit acquires data D_φfat according to a steady-state pulse sequence specifying that the phase of an RF pulse is varied in order of 0, 1×φfat, 2×φfat, etc. Herein, φfat=(2−TR/T_out+2×m)×π is established on the assumption that m denotes an integer equal to or larger than 0 and meets TR/(2×T_out)−1
摘要翻译：本发明的目的是获取用于构建水分量增强/脂肪成分抑制图像的数据，其中重复时间TR设置为期望值。包括数据采集单元和图像构造单元。数据采集单元根据稳态脉冲序列获取数据D_phifat，指定RF脉冲的相位按0，1xphifat，2xphifat等的顺序变化。这里，phifat =（2-TR / T_out + 2xm）xpi 假设m表示等于或大于0并且满足TR /（2xT_out）-1

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式