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1. 发明公开

EP0430104A2 Magnetic resonance imaging apparatus 失效
标题翻译： Apparat zur Bilderzeugung mittels magnetischer Resonanz。
公开(公告)号：EP0430104A2
公开(公告)日：1991-06-05
申请号：EP90122419.6
申请日：1990-11-23
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Konishi, Mineyuki, c/o Intellectual Property Div.
IPC分类号： G01R33/36 , G01R33/38 , G01R33/42
CPC分类号： G01R33/42 , G01R33/422
摘要： In a magnetic resonance imaging apparatus, a radiofrequency shielding body (20), which is disposed between the gradient magnetic field generating coils (12) and the radio-frequency coil (13) for interrupting electromagnetic coupling between the gradient magnetic field generating coils (12a, 12b, 12c) and the radio-frequency coil (13) due to the radio-frequency pulse applied to the radio-frequency coil (13), is formed of a conductive material having a thickness less than the skin depth defined by where π stands for the ratio of the circumference of a circle to its diameter, fo stands for the Larmor frequency of atomic nuclei of an imaging object, µ stands for the conductivity of the conductive material and σ stands for the magnetic permeability of the conductive material.
摘要翻译：在磁共振成像装置中，设置在倾斜磁场产生线圈（12）和射频线圈（13）之间的用于中断倾斜磁场产生线圈（12a）之间的电磁耦合的射频屏蔽体（20），12b，12c）和由射频线圈（13）施加的射频脉冲引起的射频线圈（13）由导电材料形成，导电材料的厚度小于由 $其中pi表示圆周长与其直径的比率，fo表示成像对象的原子核的Larmor频率，μ表示导电材料的导电率，sigma表示导电性的导磁率材料。$

2. 发明授权

EP0430104B1 Magnetic resonance imaging apparatus 失效
标题翻译：一种用于磁共振成像
公开(公告)号：EP0430104B1
公开(公告)日：1998-04-15
申请号：EP90122419.6
申请日：1990-11-23
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Konishi, Mineyuki, c/o Intellectual Property Div.
IPC分类号： G01R33/36 , G01R33/38 , G01R33/42
CPC分类号： G01R33/42 , G01R33/422

3. 发明公开

EP0430104A3 Magnetic resonance imaging apparatus 失效
标题翻译：磁共振成像装置
公开(公告)号：EP0430104A3
公开(公告)日：1991-10-30
申请号：EP90122419.6
申请日：1990-11-23
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Konishi, Mineyuki, c/o Intellectual Property Div.
IPC分类号： G01R33/36 , G01R33/38 , G01R33/42
CPC分类号： G01R33/42 , G01R33/422
摘要： In a magnetic resonance imaging apparatus, a radiofrequency shielding body (20), which is disposed between the gradient magnetic field generating coils (12) and the radio-frequency coil (13) for interrupting electromagnetic coupling between the gradient magnetic field generating coils (12a, 12b, 12c) and the radio-frequency coil (13) due to the radio-frequency pulse applied to the radio-frequency coil (13), is formed of a conductive material having a thickness less than the skin depth defined by where π stands for the ratio of the circumference of a circle to its diameter, fo stands for the Larmor frequency of atomic nuclei of an imaging object, µ stands for the conductivity of the conductive material and σ stands for the magnetic permeability of the conductive material.

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