G - Physics – 01 – N
Patent
G - Physics
01
N
324/1
G01N 24/08 (2006.01) G01R 33/341 (2006.01) G01R 33/36 (2006.01)
Patent
CA 1248585
11 ABSTRACT: Nuclear magnetic resonance apparatus with surface coil detection. For measurements with increased accuracy in a nuclear magne- tic resonance apparatus the detection device is provided with one or more surface coils (13) as measurement coils. To avoid mutual inter- ference between a radio-frequency excitation coil (10) and a measurement coil, a measurement coil is provided with a decoupling circuit (36) with which the tuned circuit of which the coil (13) forms part is tuned to a significantly higher natural frequency during activation of the excitation coil (10). On the other hand the excitation coil (10) is shorted during detection with the surface coil (13) by a low-ohmic shorting circuit (72), thereby avoiding interference with the radio- frequency measurement signals.
482243
Boskamp Eddy B.
Kemner Rudolf
Fetherstonhaugh & Co.
N.v.philips'gloeilampenfabrieken
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