发明名称 |
NMR IMAGING APPARATUS |
摘要 |
An NMR imaging apparatus (10) having a desired imaging volume for imaging of biological tissue, said apparatus comprising bias means (20) for generating a bias field, means for generating gradient fields, and radio frequency means for applying a pulse of electromagnetic radiation to the biological tissue and for detecting the resultant signals emitted from said tissue; wherein said bias means comprises a plurality of dipole ring magnets, (20) each dipole ring magnet comprising a plurality of segments, (22) each segment comprising an oriented, anisotropic permanent magnet material (23) arranged in a ring so that there is a substantially continuous ring of permanent magnet material; wherein the inner radius of at least one dipole ring magnet is different from the inner radius of an adjacent dipole ring magnet. |
申请公布号 |
WO8401226(A1) |
申请公布日期 |
1984.03.29 |
申请号 |
WO1983US01474 |
申请日期 |
1983.09.23 |
申请人 |
NEW ENGLAND NUCLEAR CORPORATION |
发明人 |
LEE, DENNY, L., Y.;HAY, ROBERT, DUNCAN |
分类号 |
G01R33/48;A61B5/055;G01R33/383;G01R33/387;H01F7/02;(IPC1-7):01R33/08 |
主分类号 |
G01R33/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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