Environmental Vibration Induced Magnetic Field Disturbance in MRI Magnet
Environmental vibrations from building and traffic cause the cryostat to move with respect to the magnet cartridge in MRI magnets. The relative motion will create eddy current in cryostat. The eddy current will disturb the magnet central frequency, which creates ghosting in images. This study is aim...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2012-06, Vol.22 (3), p.4400704-4400704 |
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| container_title | IEEE transactions on applied superconductivity |
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| creator | Longzhi Jiang Havens, T. J. |
| description | Environmental vibrations from building and traffic cause the cryostat to move with respect to the magnet cartridge in MRI magnets. The relative motion will create eddy current in cryostat. The eddy current will disturb the magnet central frequency, which creates ghosting in images. This study is aimed at formulating the methodology for a mechanical and electro-magnetic dynamical coupling system, exploring magnetic stiffness and damping and validating the numerical simulation with experimental tests. It has revealed that the magnetic stiffness and damping have played a unique and important role in MRI magnet designs. The reasonably good correlation between simulation and test was observed after magnetic stiffness and magnetic damping are included. |
| doi_str_mv | 10.1109/TASC.2011.2177051 |
| format | Article |
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The reasonably good correlation between simulation and test was observed after magnetic stiffness and magnetic damping are included.</description><subject>Applied sciences</subject><subject>Computer simulation</subject><subject>Cryostats</subject><subject>Damping</subject><subject>Dynamical systems</subject><subject>Eddy currents</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electromagnets</subject><subject>Environmental vibration</subject><subject>Exact sciences and technology</subject><subject>field disturbance</subject><subject>magnetic damping</subject><subject>Magnetic fields</subject><subject>Magnetic noise</subject><subject>Magnetic resonance imaging</subject><subject>Magnetic shielding</subject><subject>magnetic stiffness</subject><subject>Magnetomechanical effects</subject><subject>Stiffness</subject><subject>Various equipment and components</subject><subject>Vibration</subject><subject>Vibrations</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkFFLwzAQx4MoOKcfQHwpiOBLZy5pkuZxzM0NNgSdvpY0TSWjS2fSCn57Mzb24FOO3O_-3P0QugU8AsDyaT1-n4wIBhgREAIzOEMDYCxPCQN2Huv4leaE0Et0FcIGY8jyjA3QfOp-rG_d1rhONcmnLb3qbOuShat6bapkpb6c6axOZtY0VfJsQ9f7UjltEuuS1dviSFyji1o1wdwc3yH6mE3Xk3m6fH1ZTMbLVFPGu1RCKWkFmDPNJFRMKQUEqOGSZxUA5KIEEftYSJJpinFGBQWTa8VrwzGlQ_R4yN359rs3oSu2NmjTNMqZtg8FUB4vFjE8ovf_0E3bexe3KwBHVzmQmDhEcKC0b0Pwpi523m6V_41QsXdb7N0We7fF0W2ceTgmq6BVU_vow4bTIOE8Y1LyyN0dOGuMObU5zjkTnP4BTs5-zg</recordid><startdate>20120601</startdate><enddate>20120601</enddate><creator>Longzhi Jiang</creator><creator>Havens, T. 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Electrical power engineering</topic><topic>Electromagnets</topic><topic>Environmental vibration</topic><topic>Exact sciences and technology</topic><topic>field disturbance</topic><topic>magnetic damping</topic><topic>Magnetic fields</topic><topic>Magnetic noise</topic><topic>Magnetic resonance imaging</topic><topic>Magnetic shielding</topic><topic>magnetic stiffness</topic><topic>Magnetomechanical effects</topic><topic>Stiffness</topic><topic>Various equipment and components</topic><topic>Vibration</topic><topic>Vibrations</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Longzhi Jiang</creatorcontrib><creatorcontrib>Havens, T. J.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on applied superconductivity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Longzhi Jiang</au><au>Havens, T. J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Environmental Vibration Induced Magnetic Field Disturbance in MRI Magnet</atitle><jtitle>IEEE transactions on applied superconductivity</jtitle><stitle>TASC</stitle><date>2012-06-01</date><risdate>2012</risdate><volume>22</volume><issue>3</issue><spage>4400704</spage><epage>4400704</epage><pages>4400704-4400704</pages><issn>1051-8223</issn><eissn>1558-2515</eissn><coden>ITASE9</coden><abstract>Environmental vibrations from building and traffic cause the cryostat to move with respect to the magnet cartridge in MRI magnets. The relative motion will create eddy current in cryostat. The eddy current will disturb the magnet central frequency, which creates ghosting in images. This study is aimed at formulating the methodology for a mechanical and electro-magnetic dynamical coupling system, exploring magnetic stiffness and damping and validating the numerical simulation with experimental tests. 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| ispartof | IEEE transactions on applied superconductivity, 2012-06, Vol.22 (3), p.4400704-4400704 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Applied sciences Computer simulation Cryostats Damping Dynamical systems Eddy currents Electrical engineering. Electrical power engineering Electromagnets Environmental vibration Exact sciences and technology field disturbance magnetic damping Magnetic fields Magnetic noise Magnetic resonance imaging Magnetic shielding magnetic stiffness Magnetomechanical effects Stiffness Various equipment and components Vibration Vibrations |
| title | Environmental Vibration Induced Magnetic Field Disturbance in MRI Magnet |
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