Magnetic resonance methods and apparatus
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United States of America Patent
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Dec 10, 1991
Grant Date -
N/A
app pub date -
Jun 29, 1989
filing date -
Jul 6, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A coil (17) for use as a surface r.f. coil in magnetic resonance apparatus comprising a conductor (25) wound helically to form a coil of overall laminar form with the parts of the conductor on one main face (29) more closely spaced to one another than are the parts of the conductor on the other main face (31). The coil is used to induce or detect an r.f. field locally in a body under investigation by positioning it with the main face having the more closely spaced conductor parts adjacent the body. The closer spacing improves coupling to the body while allowing the coil to be thinner, and therefore less bulky, than a coil of comparable performance with the same conductor part spacing on both main faces.
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