| 摘要 |
The appts. has a steady magnetic field applied to the longitudinal axis of the patient by a magnet. Coils apply a first gradiant field in a field direction parallel to that of the steady field, but with a field strength which changes linearly oppositely to the steady field along the longitudinal axis. RF pulses are applied by a probe head coil to excite the nucleus and detect NMR signals from the patient. A second coil applies a seocnd gradient field having a different strength from that of the first gradient field. The NMR signals are processed using two-dimensional fourier transformation.
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