Nuclear magnetic resonance methods and apparatus
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United States of America Patent
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-
Dec 2, 1980
Grant Date -
N/A
app pub date -
May 13, 1987
filing date -
May 16, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of nuclear magnetic resonance imaging wherein motion artifacts in the image are reduced by compensating for variations in the coupling between the RF transmitter and/or detector coils (9A, 9B and/or 10A, 10B) and the body (43) being imaged due to movement of the body. Compensation is suitably effected by measuring the position of the body (43) with respect to a datum immediately prior to each excitation of nuclear spins in the body and setting the amplitude of the applied RF excitation pulse B (90.degree.) and the detector sensitivity in dependence on the measured position.
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