Apparatus for the formation of images of an examination subject with nuclear magnetic resonance
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United States of America Patent
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Feb 17, 1987
Grant Date -
N/A
app pub date -
May 23, 1984
filing date -
Oct 5, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Magnetic fields are applied to the examination subject, and the deflection of the atomic nuclei of the examination subject from their state of equilibrium by means of a high frequency magnetic excitation pulse is detected. There is at least one gradient coil for the purpose of generating a linear magnetic field gradient. The gradient coil is connected, in series with an additional inductance, to a current source. Connected in series with the gradient coil is a first switch. Connected in parallel with the series of connection of gradient coil and first switch is a second switch actuatable to open condition approximately simultaneously with the closure of the first switch.
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