JP2005279187A5 - - Google Patents

Download PDF

Info

Publication number
JP2005279187A5
JP2005279187A5 JP2004102220A JP2004102220A JP2005279187A5 JP 2005279187 A5 JP2005279187 A5 JP 2005279187A5 JP 2004102220 A JP2004102220 A JP 2004102220A JP 2004102220 A JP2004102220 A JP 2004102220A JP 2005279187 A5 JP2005279187 A5 JP 2005279187A5
Authority
JP
Japan
Prior art keywords
imaging apparatus
magnetic field
resonance imaging
magnetic resonance
generating means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2004102220A
Other languages
Japanese (ja)
Other versions
JP2005279187A (en
JP4262625B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2004102220A priority Critical patent/JP4262625B2/en
Priority claimed from JP2004102220A external-priority patent/JP4262625B2/en
Publication of JP2005279187A publication Critical patent/JP2005279187A/en
Publication of JP2005279187A5 publication Critical patent/JP2005279187A5/ja
Application granted granted Critical
Publication of JP4262625B2 publication Critical patent/JP4262625B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Claims (6)

計測空間に静磁場を発生させる手段と、上記静磁場発生手段の計測空間側表面上に複数の固定手段を用いて固定された傾斜磁場発生手段を備えた磁気共鳴イメージング装置において、
上記固定手段は、上記傾斜磁場発生手段上に不規則に配置されていることを特徴とする磁気共鳴イメージング装置。 In a magnetic resonance imaging apparatus, comprising: a means for generating a static magnetic field in a measurement space; and a gradient magnetic field generation means fixed using a plurality of fixing means on the measurement space side surface of the static magnetic field generation means.
The magnetic resonance imaging apparatus according to claim 1, wherein the fixing means is irregularly arranged on the gradient magnetic field generating means . 請求項１記載の磁気共鳴イメージング装置において、上記固定手段はボルトであり、上記傾斜磁場発生手段に不規則に配置されたボルト穴に上記ボルトを通して上記傾斜磁場発生手段が上記静磁場発生手段に固定されたことを特徴とする磁気共鳴イメージング装置。 2. The magnetic resonance imaging apparatus according to claim 1, wherein said fixing means is a bolt, and said gradient magnetic field generating means is fixed to said static magnetic field generating means through said bolt through a bolt hole irregularly arranged in said gradient magnetic field generating means. A magnetic resonance imaging apparatus. 請求項１記載の磁気共鳴イメージング装置において、上記固定手段はボルトであり、上記傾斜磁場発生手段は、複数種類の穴径を持つボルト穴が不規則に形成され、上記ボルトを用いて上記静磁場発生手段に固定されたことを特徴とする磁気共鳴イメージング装置。   2. The magnetic resonance imaging apparatus according to claim 1, wherein the fixing means is a bolt, and the gradient magnetic field generating means has irregularly formed bolt holes having a plurality of types of hole diameters, and the static magnetic field using the bolt. A magnetic resonance imaging apparatus fixed to a generating means. 請求項２又は３記載の磁気共鳴イメージング装置において、上記ボルトのうち少なくとも一つは、非対称形状を有する、ワッシャーの長手方向が振動の経路に対して垂直となるように配置されていることを特徴とする磁気共鳴イメージング装置。   4. The magnetic resonance imaging apparatus according to claim 2, wherein at least one of the bolts has an asymmetric shape and is arranged so that a longitudinal direction of the washer is perpendicular to a vibration path. Magnetic resonance imaging apparatus. 請求項１記載の磁気共鳴イメージング装置において、上記固定手段は、上記傾斜磁場発生手段を上記静磁場発生手段に接着する接着部材であることを特徴とする磁気共鳴イメージング装置。   2. The magnetic resonance imaging apparatus according to claim 1, wherein the fixing means is an adhesive member that adheres the gradient magnetic field generating means to the static magnetic field generating means. 請求項1記載の磁気共鳴イメージング装置において、
上記傾斜磁場発生手段は、上記固定手段の間の互いに隣接する形成部材どうしが互いに異なる共鳴周波数を持つように異なる厚さ寸法を有することを特徴とする磁気共鳴イメージング装置。 In the magnetic resonance imaging apparatus according to claim 1 ,
The magnetic resonance imaging apparatus, wherein the gradient magnetic field generating means has different thickness dimensions so that adjacent forming members between the fixing means have different resonance frequencies.
JP2004102220A 2004-03-31 2004-03-31 Magnetic resonance imaging system Expired - Fee Related JP4262625B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004102220A JP4262625B2 (en) 2004-03-31 2004-03-31 Magnetic resonance imaging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004102220A JP4262625B2 (en) 2004-03-31 2004-03-31 Magnetic resonance imaging system

Publications (3)

Publication Number Publication Date
JP2005279187A JP2005279187A (en) 2005-10-13
JP2005279187A5 true JP2005279187A5 (en) 2007-05-17
JP4262625B2 JP4262625B2 (en) 2009-05-13

Family

ID=35178179

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004102220A Expired - Fee Related JP4262625B2 (en) 2004-03-31 2004-03-31 Magnetic resonance imaging system

Country Status (1)

Country Link
JP (1) JP4262625B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2437964B (en) * 2006-05-06 2009-03-25 Siemens Magnet Technology Ltd An annular enclosure provided with an arrangement of recesses or protrustions to reduce mechanical resonance
WO2008096628A1 (en) * 2007-02-06 2008-08-14 Hitachi Medical Corporation Magnetic resonance imaging device, and inclined magnetic field coil
GB2490478B (en) 2011-04-20 2014-04-23 Siemens Plc Superconducting magnets with thermal radiation shields
JP6091839B2 (en) * 2012-10-19 2017-03-08 東芝メディカルシステムズ株式会社 Magnetic resonance imaging system

Similar Documents

Publication Publication Date Title
US7621189B2 (en) Apparatus and method for generating and sensing torsional vibrations using magnetostriction
JP2012522891A5 (en)
EP1970918A3 (en) Laminar article for electrical use and a method and machine for producing said article
CN103134560A (en) Coriolis mass flow measuring device
JP2005279187A5 (en)
TW201307695A (en) Vibration-isolating screw
Kim et al. Design and experimental study of an L shape piezoelectric energy harvester
Kam et al. Vibro-acoustic formulation of elastically restrained shear deformable stiffened rectangular plate
CN107592089A (en) A kind of low-heat elastic damping cantilever arm fine beam resonator with through-hole structure
KR101425912B1 (en) Multi layer pcb voice coil plate improved flat type speaker sound prossure
TWI752135B (en) An anti-vibration device for an acoustic device and an audio equipment frame having an anti-vibration device
JP5750439B2 (en) Piezoelectric strain device
KR102081254B1 (en) Apparatus for fixing metal mask
JP2002017705A5 (en)
WO2018123749A1 (en) Vibration power generation device
KR101328062B1 (en) Line contact magnetostrictive transducer for the transduction of omnidirectional shear horizontal bulkwaves
ATE549870T1 (en) MAGNETOSTRICTIVE MICRO SPEAKER
JP2009198901A (en) Sound absorption structure, sound absorption structure group, acoustic chamber, method of adjusting sound absorption structure and noise reduction method
Nayan et al. Vibro-acoustic formulation of elastically restrained shear deformable orthotropic plates using a simple shear deformation theory
Liu et al. Research on the Band Gap Characteristics of Two‐Dimensional Phononic Crystals Microcavity with Local Resonant Structure
JP2010215231A5 (en)
JP2002143123A5 (en)
JP2001258088A5 (en)
JP2008172105A (en) Piezoelectric fan device
WO2008109157A3 (en) Material handling apparatus and support therefor