A constant gradient unilateral magnet for near-surface MRI profiling
The design and construction of a unilateral NMR (UMR) magnet assembly for near-surface 1D profiling is presented. The arrangement consists of a single permanent magnet topped with a shaped iron pole cap. The analytically determined profile of the pole cap shapes the field over the magnet, giving a c...
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| Veröffentlicht in: | Journal of magnetic resonance (1997) 2006-12, Vol.183 (2), p.228-234 |
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| container_title | Journal of magnetic resonance (1997) |
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| creator | Marble, Andrew E. Mastikhin, Igor V. Colpitts, Bruce G. Balcom, Bruce J. |
| description | The design and construction of a unilateral NMR (UMR) magnet assembly for near-surface 1D profiling is presented. The arrangement consists of a single permanent magnet topped with a shaped iron pole cap. The analytically determined profile of the pole cap shapes the field over the magnet, giving a constant gradient of 31
G/cm over a 8
mm depth at a
1H frequency of 4.26
MHz in a spot ∼5
mm wide. The moderate gradient allows 1D profiling of planar samples with a frequency encoded spin-echo experiment. The curvature of the magnetic field limits the available resolution to 100’s of μm. The device is suitable for profiling planar samples in which a coarse resolution but large spatial extent is desired. |
| doi_str_mv | 10.1016/j.jmr.2006.08.013 |
| format | Article |
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G/cm over a 8
mm depth at a
1H frequency of 4.26
MHz in a spot ∼5
mm wide. The moderate gradient allows 1D profiling of planar samples with a frequency encoded spin-echo experiment. The curvature of the magnetic field limits the available resolution to 100’s of μm. The device is suitable for profiling planar samples in which a coarse resolution but large spatial extent is desired.</description><identifier>ISSN: 1090-7807</identifier><identifier>EISSN: 1096-0856</identifier><identifier>DOI: 10.1016/j.jmr.2006.08.013</identifier><identifier>PMID: 16996759</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Algorithms ; Computer-Aided Design ; Equipment Design ; Equipment Failure Analysis ; Image Enhancement - instrumentation ; Image Enhancement - methods ; Inhomogeneous fields ; Magnet design ; Magnetic Resonance Imaging - instrumentation ; Magnetic Resonance Imaging - methods ; Magnetics - instrumentation ; Profiling ; Reproducibility of Results ; Sensitivity and Specificity ; Surface Properties ; Transducers ; Unilateral magnetic resonance</subject><ispartof>Journal of magnetic resonance (1997), 2006-12, Vol.183 (2), p.228-234</ispartof><rights>2006 Elsevier Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c351t-81151cda42da7ec3954774a1dbd0719bad607dce28afcb105d552add8ee6347a3</citedby><cites>FETCH-LOGICAL-c351t-81151cda42da7ec3954774a1dbd0719bad607dce28afcb105d552add8ee6347a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1090780706002710$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16996759$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Marble, Andrew E.</creatorcontrib><creatorcontrib>Mastikhin, Igor V.</creatorcontrib><creatorcontrib>Colpitts, Bruce G.</creatorcontrib><creatorcontrib>Balcom, Bruce J.</creatorcontrib><title>A constant gradient unilateral magnet for near-surface MRI profiling</title><title>Journal of magnetic resonance (1997)</title><addtitle>J Magn Reson</addtitle><description>The design and construction of a unilateral NMR (UMR) magnet assembly for near-surface 1D profiling is presented. The arrangement consists of a single permanent magnet topped with a shaped iron pole cap. The analytically determined profile of the pole cap shapes the field over the magnet, giving a constant gradient of 31
G/cm over a 8
mm depth at a
1H frequency of 4.26
MHz in a spot ∼5
mm wide. The moderate gradient allows 1D profiling of planar samples with a frequency encoded spin-echo experiment. The curvature of the magnetic field limits the available resolution to 100’s of μm. The device is suitable for profiling planar samples in which a coarse resolution but large spatial extent is desired.</description><subject>Algorithms</subject><subject>Computer-Aided Design</subject><subject>Equipment Design</subject><subject>Equipment Failure Analysis</subject><subject>Image Enhancement - instrumentation</subject><subject>Image Enhancement - methods</subject><subject>Inhomogeneous fields</subject><subject>Magnet design</subject><subject>Magnetic Resonance Imaging - instrumentation</subject><subject>Magnetic Resonance Imaging - methods</subject><subject>Magnetics - instrumentation</subject><subject>Profiling</subject><subject>Reproducibility of Results</subject><subject>Sensitivity and Specificity</subject><subject>Surface Properties</subject><subject>Transducers</subject><subject>Unilateral magnetic resonance</subject><issn>1090-7807</issn><issn>1096-0856</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kMtKAzEUhoMoVqsP4EZm5W7Gk85MksFVqVdQBNF1OE3OlJS51GRG8O1NbcGdq_Mv_gvnY-yCQ8aBi-t1tm59NgMQGagMeH7ATjhUIgVVisNfDalUICfsNIQ1AOelhGM24aKqhCyrE3Y7T0zfhQG7IVl5tI6iGDvX4EAem6TFVUdDUvc-6Qh9GkZfo6Hk5e0p2fi-do3rVmfsqMYm0Pn-TtnH_d374jF9fn14WsyfU5OXfEhVnOfGYjGzKMnkVVlIWSC3SwuSV0u0AqQ1NFNYmyWH0pblDK1VRCIvJOZTdrXrjcufI4VBty4YahrsqB-DFoqLvFJFNPKd0fg-BE-13njXov_WHPQWnV7riE5v0WlQOqKLmct9-bhsyf4l9qyi4WZnoPjilyOvg4m4DFnnyQza9u6f-h85iX9M</recordid><startdate>20061201</startdate><enddate>20061201</enddate><creator>Marble, Andrew E.</creator><creator>Mastikhin, Igor V.</creator><creator>Colpitts, Bruce G.</creator><creator>Balcom, Bruce J.</creator><general>Elsevier Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20061201</creationdate><title>A constant gradient unilateral magnet for near-surface MRI profiling</title><author>Marble, Andrew E. ; Mastikhin, Igor V. ; Colpitts, Bruce G. ; Balcom, Bruce J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c351t-81151cda42da7ec3954774a1dbd0719bad607dce28afcb105d552add8ee6347a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Algorithms</topic><topic>Computer-Aided Design</topic><topic>Equipment Design</topic><topic>Equipment Failure Analysis</topic><topic>Image Enhancement - instrumentation</topic><topic>Image Enhancement - methods</topic><topic>Inhomogeneous fields</topic><topic>Magnet design</topic><topic>Magnetic Resonance Imaging - instrumentation</topic><topic>Magnetic Resonance Imaging - methods</topic><topic>Magnetics - instrumentation</topic><topic>Profiling</topic><topic>Reproducibility of Results</topic><topic>Sensitivity and Specificity</topic><topic>Surface Properties</topic><topic>Transducers</topic><topic>Unilateral magnetic resonance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Marble, Andrew E.</creatorcontrib><creatorcontrib>Mastikhin, Igor V.</creatorcontrib><creatorcontrib>Colpitts, Bruce G.</creatorcontrib><creatorcontrib>Balcom, Bruce J.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of magnetic resonance (1997)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Marble, Andrew E.</au><au>Mastikhin, Igor V.</au><au>Colpitts, Bruce G.</au><au>Balcom, Bruce J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A constant gradient unilateral magnet for near-surface MRI profiling</atitle><jtitle>Journal of magnetic resonance (1997)</jtitle><addtitle>J Magn Reson</addtitle><date>2006-12-01</date><risdate>2006</risdate><volume>183</volume><issue>2</issue><spage>228</spage><epage>234</epage><pages>228-234</pages><issn>1090-7807</issn><eissn>1096-0856</eissn><abstract>The design and construction of a unilateral NMR (UMR) magnet assembly for near-surface 1D profiling is presented. The arrangement consists of a single permanent magnet topped with a shaped iron pole cap. The analytically determined profile of the pole cap shapes the field over the magnet, giving a constant gradient of 31
G/cm over a 8
mm depth at a
1H frequency of 4.26
MHz in a spot ∼5
mm wide. The moderate gradient allows 1D profiling of planar samples with a frequency encoded spin-echo experiment. The curvature of the magnetic field limits the available resolution to 100’s of μm. The device is suitable for profiling planar samples in which a coarse resolution but large spatial extent is desired.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>16996759</pmid><doi>10.1016/j.jmr.2006.08.013</doi><tpages>7</tpages></addata></record> |
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| identifier | ISSN: 1090-7807 |
| ispartof | Journal of magnetic resonance (1997), 2006-12, Vol.183 (2), p.228-234 |
| issn | 1090-7807 1096-0856 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Algorithms Computer-Aided Design Equipment Design Equipment Failure Analysis Image Enhancement - instrumentation Image Enhancement - methods Inhomogeneous fields Magnet design Magnetic Resonance Imaging - instrumentation Magnetic Resonance Imaging - methods Magnetics - instrumentation Profiling Reproducibility of Results Sensitivity and Specificity Surface Properties Transducers Unilateral magnetic resonance |
| title | A constant gradient unilateral magnet for near-surface MRI profiling |
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