Concept of Phase Cycling in Pulsed Magnetic Resonance Using Sinusoidal Magnetic Field Modulation.

摘要: In conventional pulsed magnetic resonance suppression of unwanted signals is achieved by changing pulse phases with respect to the reference signal and spin magnetization phase. This method called phase cycling. An alternative approach suggested separate from echo using field modulation. Precession frequency spins, therefore free indication decays signals, can be controlled selection modulation parameters. enables Since detected in presence field, which drives precession, frequency-modulated. Numerical transformation into an accelerating frame associated Larmor restores a form that would have been observed absence The cycling analyzed detail for two case.