JP2002263080A5 - - Google Patents

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Publication number
JP2002263080A5
JP2002263080A5 JP2001067151A JP2001067151A JP2002263080A5 JP 2002263080 A5 JP2002263080 A5 JP 2002263080A5 JP 2001067151 A JP2001067151 A JP 2001067151A JP 2001067151 A JP2001067151 A JP 2001067151A JP 2002263080 A5 JP2002263080 A5 JP 2002263080A5
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Japan
Prior art keywords
magnetic field
magnetic
resonance imaging
imaging apparatus
shielding
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JP2001067151A
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JP2002263080A (en
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Priority to JP2001067151A priority Critical patent/JP2002263080A/en
Priority claimed from JP2001067151A external-priority patent/JP2002263080A/en
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Publication of JP2002263080A5 publication Critical patent/JP2002263080A5/ja
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Claims (6)

被検体の置かれる空間の上方及び／または下方に配置され垂直方向の磁場を発生する磁場発生源を備えた静磁場発生手段と、磁場強度勾配を発生する傾斜磁場発生手段と、高周波磁場発生手段と、被検体から発生する核磁気共鳴信号を検出する手段と、前記核磁気共鳴信号を処理し、その結果を表示する手段と、前記空間外へ漏洩する磁界を低減する漏洩磁界低減手段とを有する垂直磁場磁気共鳴イメージング装置を包囲して外部からの電界を遮蔽する電界遮蔽手段を備えた垂直磁場磁気共鳴イメージング装置用シールド部屋において、
前記シールド部屋は、その壁面の少なくとも一部に、前記漏洩磁界を実質的に低減することで磁界を遮蔽する磁界遮蔽手段を備えたことを特徴とする垂直磁場磁気共鳴イメージング装置用シールド部屋。 Static magnetic field generating means provided with a magnetic field generating source arranged above and / or below a space where a subject is placed to generate a vertical magnetic field, gradient magnetic field generating means for generating a magnetic field strength gradient, and high frequency magnetic field generating means Means for detecting a nuclear magnetic resonance signal generated from a subject, means for processing the nuclear magnetic resonance signal and displaying the result, and leakage magnetic field reduction means for reducing the magnetic field leaking out of the space In a shielded room for a vertical magnetic field magnetic resonance imaging apparatus provided with an electric field shielding means for surrounding the vertical magnetic field magnetic resonance imaging apparatus and shielding an electric field from the outside,
The shield room is provided with a magnetic field shielding means for shielding a magnetic field by substantially reducing the leakage magnetic field on at least a part of a wall surface of the shield room. 前記漏洩磁界低減手段は、前記磁場発生源と磁気回路を構成する第１の強磁性体により構成したことを特徴とする請求項１記載の垂直磁場磁磁気共鳴イメージング装置用シールド部屋。 The leakage magnetic field reducing means, first according to claim 1, wherein the vertical magnetic field magnetic magnetic resonance imaging apparatus for shielding a room, characterized by being configured of a ferromagnetic material constituting the magnetic source and the magnetic circuit. 前記磁場発生源は、超電導コイルであり、前記漏洩磁界低減手段は、前記超電導コイルが発生する磁束に対して極性が逆向きの磁束を発生する第１のキャンセルコイルにより構成されたことを特徴とする請求項１又は２記載の垂直磁場磁気共鳴イメージング装置用シールド部屋。 The magnetic field generation source is a superconducting coil, and the leakage magnetic field reducing means is constituted by a first canceling coil that generates a magnetic flux having a polarity opposite to a magnetic flux generated by the superconducting coil. The shield room for a vertical magnetic field magnetic resonance imaging apparatus according to claim 1 or 2 . 前記磁界遮蔽手段は、第２の強磁性体により構成したことを特徴とする請求項１乃至３のいずれかに記載の垂直磁場磁気共鳴イメージング装置用シールド部屋。 The shield room for a perpendicular magnetic resonance imaging apparatus according to any one of claims 1 to 3, wherein the magnetic field shielding means is formed of a second ferromagnetic material . 前記磁界遮蔽手段は、前記漏洩磁界の磁束に対して極性が逆向きの磁束を発生する第２のキャンセルコイルにより構成したことを特徴とする請求項１乃至４のいずれかに記載の垂直磁場磁気共鳴イメージング装置用シールド部屋。 Wherein the magnetic field shielding means, the vertical magnetic field magnetic according to any one of claims 1 to 4, characterized in that polarity with respect to the magnetic flux of the leakage magnetic field is constituted by a second cancellation coil for generating a magnetic flux in the opposite direction Shield room for resonance imaging equipment . 前記シールド部屋の壁面の少なくとも一部には、部屋の内外を双方向から透視できる領域が存在することを特徴とする請求項１乃至５のいずれかに記載の垂直磁場磁気共鳴イメージング装置用シールド部屋。6. The shield room for a vertical magnetic field magnetic resonance imaging apparatus according to claim 1, wherein at least a part of the wall surface of the shield room has a region through which the inside and outside of the room can be seen in both directions. .
JP2001067151A 2001-03-09 2001-03-09 Magnetic resonance imaging apparatus Pending JP2002263080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001067151A JP2002263080A (en) 2001-03-09 2001-03-09 Magnetic resonance imaging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001067151A JP2002263080A (en) 2001-03-09 2001-03-09 Magnetic resonance imaging apparatus

Publications (2)

Publication Number Publication Date
JP2002263080A JP2002263080A (en) 2002-09-17
JP2002263080A5 true JP2002263080A5 (en) 2005-06-30

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JP2001067151A Pending JP2002263080A (en) 2001-03-09 2001-03-09 Magnetic resonance imaging apparatus

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005043181A1 (en) * 2003-10-29 2005-05-12 Koninklijke Philips Electronics N.V. Shielded treatment room and device suitable for recording images on the basis of magnetic resonance
JP4266232B2 (en) * 2006-11-17 2009-05-20 株式会社日立製作所 Superconducting magnet apparatus and magnetic resonance imaging apparatus
JP5298364B2 (en) * 2008-02-08 2013-09-25 株式会社日立メディコ Magnetic resonance imaging system

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