Three-dimensional magnetic resonance - pulse trains for an improved gradient - and spin echo - method (grase)

摘要

the described three-dimensional magnetic resonance pulse sequence of the gradient and spinecho type changes the phasenkodierung along the axis z in identical manner for all signals between each of two adjacent refokussierenden hochfrequenzimpulsen in magnetic resonance pulse sequence.the phasenfehlermodulation inhomogeneities of the magnetic field caused by the amplitude modulation, and the t2 are two different spatial axes which follows. this allows a complete elimination of periodicity for these two modulations and improves the image quality.