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1. 发明申请

US20140125333A1 MAGNETIC RESONANCE IMAGING APPARATUS AND GRADIENT MAGNETIC FIELD WAVERFORM ESTIMATION METHOD 有权
标题翻译：磁共振成像装置和梯度磁场波形估计方法
公开(公告)号：US20140125333A1
公开(公告)日：2014-05-08
申请号：US14128051
申请日：2012-06-27
申请人： Hikaru Hanada , Yoshitaka Sato , Kosuke Hirai , Kuniharu Oka , Masahiro Takizawa , Naoya Sakaguchi , Hidehisa Akimaru , Miyuki Kawamura
发明人： Hikaru Hanada , Yoshitaka Sato , Kosuke Hirai , Kuniharu Oka , Masahiro Takizawa , Naoya Sakaguchi , Hidehisa Akimaru , Miyuki Kawamura
IPC分类号： G01R33/565
CPC分类号： G01R33/56518 , A61B5/055 , G01R33/56572
摘要： In order to obtain a highly reliable image with no image distortion or no artifacts, such as ghosting, by compensating for the distortion of an output gradient magnetic field waveform caused by various factors with high accuracy, an input gradient magnetic field waveform and an output gradient magnetic field waveform corresponding to the input gradient magnetic field waveform are calculated, a response function that is a sum of response functions of a plurality of elements affecting the output gradient magnetic field waveform is calculated using the input gradient magnetic field waveform and the output gradient magnetic field waveform, an output gradient magnetic field waveform is calculated from an input gradient magnetic field waveform of a gradient magnetic field pulse set in the imaging sequence using the response function, and various kinds of correction are performed using the calculated value of the calculated output gradient magnetic field waveform.
摘要翻译：为了通过补偿由高精度的各种因素引起的输出梯度磁场波形的失真，获得没有图像失真或无伪影的高可靠性图像，例如重影，输入梯度磁场波形和输出梯度计算与输入梯度磁场波形对应的磁场波形，使用输入梯度磁场波形和输出梯度磁场计算作为影响输出梯度磁场波形的多个元素的响应函数之和的响应函数使用响应函数从成像序列中设定的梯度磁场脉冲的输入梯度磁场波形计算输出梯度磁场波形，并使用计算出的输出梯度的计算值来进行各种校正磁场波形。

2. 发明授权

US09664765B2 Magnetic resonance imaging apparatus and gradient magnetic field waveform estimation method 有权
公开(公告)号：US09664765B2
公开(公告)日：2017-05-30
申请号：US14128051
申请日：2012-06-27
申请人： Hikaru Hanada , Yoshitaka Sato , Kosuke Hirai , Kuniharu Oka , Masahiro Takizawa , Naoya Sakaguchi , Hidehisa Akimaru , Miyuki Kawamura
发明人： Hikaru Hanada , Yoshitaka Sato , Kosuke Hirai , Kuniharu Oka , Masahiro Takizawa , Naoya Sakaguchi , Hidehisa Akimaru , Miyuki Kawamura
IPC分类号： G01V3/00 , G01R33/565 , A61B5/055
CPC分类号： G01R33/56518 , A61B5/055 , G01R33/56572
摘要： In order to obtain a highly reliable image with no image distortion or no artifacts, such as ghosting, by compensating for the distortion of an output gradient magnetic field waveform caused by various factors with high accuracy, an input gradient magnetic field waveform and an output gradient magnetic field waveform corresponding to the input gradient magnetic field waveform are calculated, a response function that is a sum of response functions of a plurality of elements affecting the output gradient magnetic field waveform is calculated using the input gradient magnetic field waveform and the output gradient magnetic field waveform, an output gradient magnetic field waveform is calculated from an input gradient magnetic field waveform of a gradient magnetic field pulse set in the imaging sequence using the response function, and various kinds of correction are performed using the calculated value of the calculated output gradient magnetic field waveform.

3. 发明授权

US09064303B2 Magnetic resonance imaging apparatus and magnetic resonance imaging method configured to correct specific region data based on benchmark slice 有权
标题翻译：磁共振成像装置和磁共振成像方法被配置为基于基准切片校正特定区域数据
公开(公告)号：US09064303B2
公开(公告)日：2015-06-23
申请号：US13823232
申请日：2011-09-21
申请人： Miyuki Kawamura , Masahiro Takizawa
发明人： Miyuki Kawamura , Masahiro Takizawa
IPC分类号： G06K9/00 , G06T7/00 , A61B5/00 , G01R33/48 , A61B5/055 , G01R33/565
CPC分类号： G06T7/0012 , A61B5/055 , A61B5/7207 , A61B2576/00 , G01R33/4824 , G01R33/56509 , G06T2207/10088
摘要： In multi-slice imaging of a magnetic resonance imaging apparatus based on a non-Cartesian sampling method in which an overlap portion is generated in k space, stable body movement correction is realized at high speed. In order to do so, the rotation and translation of an object is detected for each specific region (in the case of a hybrid radial method, each blade) using a most characteristic slice in the imaging region, and the detected body movement is used for body movement correction of the specific region in all slices. The slice used for correction may be determined using a mathematical analysis result, such as correlation. In addition, data collection and correction processing may be performed in parallel.
摘要翻译：在基于在k空间中产生重叠部分的非笛卡尔采样方法的磁共振成像装置的多切片成像中，以高速实现稳定的身体动作校正。为了这样做，对于每个特定区域（在混合径向方法，每个叶片的情况下）使用成像区域中最特征的切片检测物体的旋转和平移，并且检测到的身体运动用于所有切片中特定区域的身体运动校正。可以使用诸如相关性的数学分析结果来确定用于校正的切片。此外，数据采集和校正处理可以并行执行。

4. 发明申请

US20130170727A1 MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD 有权
标题翻译：磁共振成像装置和磁共振成像方法
公开(公告)号：US20130170727A1
公开(公告)日：2013-07-04
申请号：US13823232
申请日：2011-09-21
申请人： Miyuki Kawamura , Masahiro Takizawa
发明人： Miyuki Kawamura , Masahiro Takizawa
IPC分类号： G06T7/00
CPC分类号： G06T7/0012 , A61B5/055 , A61B5/7207 , A61B2576/00 , G01R33/4824 , G01R33/56509 , G06T2207/10088
摘要： In multi-slice imaging of a magnetic resonance imaging apparatus based on a non-Cartesian sampling method in which an overlap portion is generated in k space, stable body movement correction is realized at high speed. In order to do so, the rotation and translation of an object is detected for each specific region (in the case of a hybrid radial method, each blade) using a most characteristic slice in the imaging region, and the detected body movement is used for body movement correction of the specific region in all slices. The slice used for correction may be determined using a mathematical analysis result, such as correlation. In addition, data collection and correction processing may be performed in parallel.
摘要翻译：在基于在k空间中产生重叠部分的非笛卡尔采样方法的磁共振成像装置的多切片成像中，以高速实现稳定的身体动作校正。为了这样做，对于每个特定区域（在混合径向方法，每个叶片的情况下）使用成像区域中最特征的切片检测物体的旋转和平移，并且检测到的身体运动用于所有切片中特定区域的身体运动校正。可以使用诸如相关性的数学分析结果来确定用于校正的切片。此外，数据采集和校正处理可以并行执行。

5. 发明授权

US09714994B2 Magnetic resonance imaging apparatus, and method for correcting measurement-space coordinates 有权
公开(公告)号：US09714994B2
公开(公告)日：2017-07-25
申请号：US13881207
申请日：2011-10-28
申请人： Masahiro Takizawa , Tetsuhiko Takahashi , Miyuki Kawamura
发明人： Masahiro Takizawa , Tetsuhiko Takahashi , Miyuki Kawamura
IPC分类号： G01V3/00 , G01R33/48 , G01R33/565 , G01R33/28
CPC分类号： G01R33/48 , G01R33/28 , G01R33/4824 , G01R33/56572
摘要： In order to approximate the gradient magnetic field pulse waveform shape with high accuracy and improve the image quality at the time of imaging cross-section change or oblique imaging, an MRI apparatus of the present invention divides the waveform shape of the gradient magnetic field pulse into a plurality of sections, defines an approximation function for each section, and corrects the k-space coordinates at which the echo signal is arranged using the parameter of the approximation function. In addition, an optimal parameter of the approximation function of the waveform shape of the gradient magnetic field pulse is searched for using the measured signal.

6. 发明申请

US20130207654A1 MAGNETIC RESONANCE IMAGING APPARATUS, METHOD FOR CORRECTING MEASUREMENT-SPACE COORDINATES, AND IMAGE RECONSTRUCTION METHOD 有权
标题翻译：磁共振成像装置，校正测量空间坐标的方法和图像重建方法
公开(公告)号：US20130207654A1
公开(公告)日：2013-08-15
申请号：US13881207
申请日：2011-10-28
申请人： Masahiro Takizawa , Tetsuhiko Takahashi , Miyuki Kawamura
发明人： Masahiro Takizawa , Tetsuhiko Takahashi , Miyuki Kawamura
IPC分类号： G01R33/48 , G01R33/28
CPC分类号： G01R33/48 , G01R33/28 , G01R33/4824 , G01R33/56572
摘要： In order to approximate the gradient magnetic field pulse waveform shape with high accuracy and improve the image quality at the time of imaging cross-section change or oblique imaging, an MRI apparatus of the present invention divides the waveform shape of the gradient magnetic field pulse into a plurality of sections, defines an approximation function for each section, and corrects the k-space coordinates at which the echo signal is arranged using the parameter of the approximation function. In addition, an optimal parameter of the approximation function of the waveform shape of the gradient magnetic field pulse is searched for using the measured signal.
摘要翻译：为了以高精度近似梯度磁场脉冲波形形状，并且在成像截面变化或倾斜成像时提高图像质量，本发明的MRI装置将梯度磁场脉冲的波形形状分为多个部分定义每个部分的近似函数，并且使用近似函数的参数来校正排列回波信号的k空间坐标。此外，使用测量信号搜索梯度磁场脉冲的波形形状的近似函数的最佳参数。

7. 发明申请

US20130023753A1 MAGNETIC RESONANCE IMAGING APPARATUS AND SAR ADJUSTMENT METHOD 有权
标题翻译：磁共振成像装置和SAR调整方法
公开(公告)号：US20130023753A1
公开(公告)日：2013-01-24
申请号：US13638475
申请日：2011-03-24
申请人： Miyuki Kawamura , Kosuke Ito , Hisako Nagao
发明人： Miyuki Kawamura , Kosuke Ito , Hisako Nagao
IPC分类号： A61B5/055
CPC分类号： A61B5/055 , G01R33/288 , G01R33/36 , G01R33/543 , G01R33/546
摘要： Desired imaging is performed within the SAR restriction without changing the imaging conditions set in advance when SAR exceeds an upper limit. In order to do so, in imaging of an object performed by combination of a plurality of pulse sequences, a SAR graph showing a temporal change in the predicted SAR value of each pulse sequence is displayed. When the predicted SAR value of the pulse sequence is the same as or exceeds the upper SAR limit, the exchange of such pulse sequences or the insertion of a waiting time is performed.
摘要翻译：期望的成像在SAR限制内执行，而不改变当SAR超过上限时预先设置的成像条件。为了这样做，在通过多个脉冲序列的组合执行的对象的成像中，显示示出每个脉冲序列的预测SAR值的时间变化的SAR图。当脉冲序列的预测SAR值相同或超过上限SAR限制时，执行这种脉冲序列的交换或插入等待时间。

8. 发明授权

US06581404B2 Refrigerant 失效
标题翻译：制冷剂
公开(公告)号：US06581404B2
公开(公告)日：2003-06-24
申请号：US10217870
申请日：2002-08-13
申请人： Takeo Komatsubara , Yasuki Takahashi , Takayuki Saitou , Miyuki Kawamura
发明人： Takeo Komatsubara , Yasuki Takahashi , Takayuki Saitou , Miyuki Kawamura
IPC分类号： F25B4300
CPC分类号： C09K5/045 , C09K5/042
摘要： An object of the present invention is to provide a refrigerant in which an odorant is added, the odorant being compatible with refrigerants and refrigerating device oils, and having no reactivity with refrigerating device oils and materials forming refrigerating circuits, and to provide a refrigerating device in which the refrigerant is circulated in the refrigerating circuit. A refrigerant whose main component is a hydrocarbon having 1 to 4 carbon atoms, or a flammable hydrocarbon fluoride obtained when one or more hydrogen atoms of the hydrocarbon is substituted by fluorine atoms, the refrigerant containing a tetrahydrothiophene as an odorant, and a refrigerating device in which the refrigerant is circulated are provided.
摘要翻译：本发明的目的在于提供一种加入臭味剂的制冷剂，与制冷剂和制冷装置油相容的加臭剂，与制冷装置油和形成制冷回路的材料无反应性，并提供一种制冷装置制冷剂在制冷回路中循环。主要成分为碳原子数为1〜4的烃的制冷剂，或者烃的一个以上的氢原子被氟原子取代时所得到的可燃性氟化烃，含有四氢噻吩作为加臭剂，以及制冷剂循环的制冷装置。

9. 发明授权

US09198598B2 Magnetic resonance imaging apparatus and SAR adjustment method 有权
标题翻译：磁共振成像装置和SAR调整方法
公开(公告)号：US09198598B2
公开(公告)日：2015-12-01
申请号：US13638475
申请日：2011-03-24
申请人： Miyuki Kawamura , Kosuke Ito , Hisako Nagao
发明人： Miyuki Kawamura , Kosuke Ito , Hisako Nagao
IPC分类号： A61B5/055 , G01R33/28 , G01R33/36 , G01R33/54
CPC分类号： A61B5/055 , G01R33/288 , G01R33/36 , G01R33/543 , G01R33/546
摘要： Desired imaging is performed within the SAR restriction without changing the imaging conditions set in advance when SAR exceeds an upper limit. In order to do so, in imaging of an object performed by combination of a plurality of pulse sequences, a SAR graph showing a temporal change in the predicted SAR value of each pulse sequence is displayed. When the predicted SAR value of the pulse sequence is the same as or exceeds the upper SAR limit, the exchange of such pulse sequences or the insertion of a waiting time is performed.
摘要翻译：期望的成像在SAR限制内执行，而不改变当SAR超过上限时预先设置的成像条件。为了这样做，在通过多个脉冲序列的组合执行的对象的成像中，显示示出每个脉冲序列的预测SAR值的时间变化的SAR图。当脉冲序列的预测SAR值相同或超过上限SAR限制时，执行这种脉冲序列的交换或插入等待时间。

10. 发明授权

US06644064B2 Refrigerant and refrigerating device 失效
公开(公告)号：US06644064B2
公开(公告)日：2003-11-11
申请号：US09908760
申请日：2001-07-19
申请人： Takeo Komatsubara , Yasuki Takahashi , Takayuki Saitou , Miyuki Kawamura
发明人： Takeo Komatsubara , Yasuki Takahashi , Takayuki Saitou , Miyuki Kawamura
IPC分类号： F25B100
CPC分类号： C09K5/045 , C09K5/042
摘要： An object of the present invention is to provide a refrigerant in which an odorant is added, the odorant being compatible with refrigerants and refrigerating device oils, and having no reactivity with refrigerating device oils and materials forming refrigerating circuits, and to provide a refrigerating device in which the refrigerant is circulated in the refrigerating circuit. A refrigerant whose main component is a hydrocarbon having 1 to 4 carbon atoms, or a flammable hydrocarbon fluoride obtained when one or more hydrogen atoms of the hydrocarbon is substituted by fluorine atoms, the refrigerant containing a tetrahydrothiophene as an odorant, and a refrigerating device in which the refrigerant is circulated are provided.

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