| 摘要 |
An MR imaging apparatus using NMR phenomenon includes a main magnet, a first to a third gradient field coils, a RF coil, a RF emitter, a slice-selecting gradient field pulse generator, a reading gradient field pulse generator, a phase-encoding gradient field pulse generator and a data processor. The phase-encoding gradient field pulse generator effects phase-encoding, such that phase-encoding gradient field pulses have varied strengths to vary integrated phase encode amounts of spin echo signals from a positive (or negative) value through zero to a negative (or positive) value according to an order of generation; to vary, in a reversed direction, integrated phase encode amounts of each group of gradient echo signals having the same place in an order of generation thereof within respective pulse intervals; and to give the integrated phase encode amounts of each group of gradient echo signals greater absolute values than the integrated phase encode amounts of the spin echo signals.
|
